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ANR Management Contents 9.1.1 ANR Management

eRAN

ANR Management Feature Parameter Description Issue

01

Date

2016-03-07

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2016. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

9.1.1 Contents 1 About This Document 1.1 Scope 1.2 Intended Audience 1.3 Change History 1.4 Differences Between eNodeB Types

2 Overview 2.1 Introduction 2.2 Benefits

3 Concepts Related to ANR 3.1 NCL 3.2 NRT 3.3 Blacklists and Whitelist 3.4 Requirements of UEs for ANR 3.5 ANR Processing for Special UEs

4 Intra-RAT ANR 4.1 Feature Description 4.1.1 LOFD-002001 Automatic Neighbour Relation (ANR) 4.2 Intra-RAT NCL and NRT 4.2.1 NCL/NRT Control Mode 4.2.2 NRT Optimization Mode

4.2.3 Parameters Related to NCL/NRT Management 4.3 Event-triggered ANR 4.3.1 Automatic Detection and Addition of Missing Neighboring Cells 4.3.1.1 Automatic Detection of Missing Neighboring Cells 4.3.1.2 Automatic Addition of Missing Neighboring Cells 4.3.2 NCL Entry Modification 4.3.3 NCL/NRT Entry Removal 4.3.3.1 Removal of Neighbor Relationships from an NRT 4.3.3.2 Removal of External Cells from an NCL 4.3.4 Detection of Abnormal Intra-RAT Neighboring Cell Coverage 4.3.5 Automatic Optimization of Neighbor Relationship Attributes 4.4 Fast ANR 4.4.1 Automatic Detection and Addition of Missing Neighboring Cells 4.4.1.1 Automatic Detection of Missing Neighboring Cells 4.4.1.2 Automatic Addition of Missing Neighboring Cells 4.4.2 Modifying an NCL Entry 4.5 Intra-RAT Backward ANR 4.6 NCL/NRT Self-Management Based on X2 Messages 4.6.1 NCL/NRT Entry Addition and Update 4.6.2 NCL/NRT Entry Removal

5 Inter-RAT ANR 5.1 Feature Description 5.1.1 LOFD-002002 Inter-RAT ANR 5.2 Inter-RAT NCL and NRT 5.2.1 NCL/NRT Control Mode 5.2.2 NRT Optimization Mode 5.2.3 Parameters Related to NCL/NRT Management 5.3 Event-triggered ANR 5.3.1 Automatic Detection and Addition of Missing Neighboring Cells 5.3.1.1 Automatic Detection of Missing Neighboring Cells 5.3.1.2 Automatic Addition of Missing Neighboring Cells 5.3.2 NCL Entry Modification 5.3.3 NCL/NRT Entry Removal 5.3.3.1 Removal of Neighbor Relationships from an NRT 5.3.3.2 Removal of External Cells from an NCL 5.4 Fast ANR 5.4.1 Automatic Detection and Addition of Missing Neighboring Cells 5.4.1.1 Automatic Detection of Missing Neighboring Cells

5.4.1.2 Automatic Addition of Missing Neighboring Cells 5.4.2 NCL Entry Modification 5.5 Automatic Optimization of Neighbor Relationship Attributes 5.5.1 Automatic Optimization of Blind Handover Priorities 5.5.1.1 Overview 5.5.1.2 Inter-RAT Handover Statistics Collection 5.5.1.3 Generation of Optimization Advice for Blind Handover Priorities 5.5.2 Automatic Optimization of Measurement Priorities

6 Neighbor Relationship Classification 6.1 Feature Description 6.1.1 LOFD-081225 Neighbor Cell Classification Management 6.2 Intra-RAT Neighbor Relationship Classification 6.2.1 Neighbor Relationship Classification 6.2.2 Blacklisted Neighbor Relationship Management 6.2.3 Differentiated Handling 6.3 Inter-RAT Neighbor Relationship Classification 6.3.1 Neighbor Relationship Classification 6.3.2 Blacklisted Neighbor Relationship Management

7 ANR with Shared Cells 7.1 Intra-RAT ANR with Shared Cells 7.1.1 Shared E-UTRAN Cell Broadcasting Its PLMN List in an RR Manner 7.1.2 Shared E-UTRAN Cell Not Broadcasting Its PLMN List in an RR Manner 7.2 Inter-RAT ANR with Shared Cells 7.2.1 Shared GERAN Cell 7.2.2 Shared UTRAN Cell

8 PLMN ID Management 9 Related Features 9.1 Features Related to LOFD-002001 Automatic Neighbour Relation (ANR) 9.2 Features Related to LOFD-002002 Inter-RAT ANR 9.3 Features Related to LOFD-081225 Neighbor Cell Classification Management 9.4 Features Related to LBFD-081102 PLMN ID Management

10 Network Impact 10.1 LOFD-002001 Automatic Neighbour Relation (ANR) 10.2 LOFD-002002 Inter-RAT ANR 10.3 LOFD-081225 Neighbor Cell Classification Management 10.4 LBFD-081102 PLMN ID Management

11 Engineering Guidelines for Intra-RAT ANR

11.1 When to Use Intra-RAT ANR 11.2 Required Information 11.3 Deployment 11.3.1 Process 11.3.2 Requirements 11.3.3 Precautions 11.3.4 Hardware Adjustment 11.3.5 Data Preparation and Feature Activation 11.3.5.1 Data Preparation 11.3.5.2 Using the CME 11.3.5.3 Using MML Commands 11.3.5.4 MML Command Examples 11.3.6 Activation Observation 11.3.7 Reconfiguration 11.3.8 Deactivation 11.3.8.1 Using the CME 11.3.8.2 Using MML Commands 11.3.8.3 MML Command Examples 11.4 Performance Monitoring 11.5 Parameter Optimization 11.6 Troubleshooting

12 Engineering Guidelines for Inter-RAT ANR 12.1 When to Use Inter-RAT ANR 12.2 Required Information 12.3 Deployment 12.3.1 Process 12.3.2 Requirements 12.3.3 Precautions 12.3.4 Hardware Adjustment 12.3.5 Data Preparation and Feature Activation 12.3.5.1 Data Preparation 12.3.5.2 Using the CME 12.3.5.3 Using MML Commands 12.3.5.4 MML Command Examples 12.3.6 Activation Observation 12.3.7 Reconfiguration 12.3.8 Deactivation 12.3.8.1 Using the CME

12.3.8.2 Using MML Commands 12.3.8.3 MML Command Examples 12.4 Performance Monitoring 12.5 Parameter Optimization 12.6 Troubleshooting

13 Parameters 14 Counters 15 Glossary 16 Reference Documents

1

About This Document

1.1 Scope This document describes automatic neighbor relation (ANR) management, including its technical principles, related features, network impact, and engineering guidelines. This document covers the following features: 

LOFD-002001 Automatic Neighbour Relation (ANR)



LOFD-002002 Inter-RAT ANR



LOFD-081225 Neighbor Cell Classification Management



LBFD-081102 PLMN ID Management

LOFD-002002 Inter-RAT ANR described in this document handles only neighbor relationships of evolved universal terrestrial radio access network (E-UTRAN) with universal terrestrial radio access network (UTRAN) or GSM/EDGE radio access network (GERAN). For details about ANR management of E-UTRAN with CDMA2000 networks, see LTE-CDMA2000 ANR Management Feature Parameter Description. This document applies to the following types of eNodeBs. eNodeB Type

Model

Macro

3900 series eNodeB

Micro

BTS3202E BTS3911E

eNodeB Type

Model

BTS3203E LampSite

DBS3900 LampSite

Any managed objects (MOs), parameters, alarms, or counters described herein correspond to the software release delivered with this document. Any future updates will be described in the product documentation delivered with future software releases. This document applies only to LTE FDD. Any "LTE" in this document refers to LTE FDD, and "eNodeB" refers to LTE FDD eNodeB.

1.2 Intended Audience This document is intended for personnel who: 

Need to understand the features described herein



Work with Huawei products

1.3 Change History This section provides information about the changes in different document versions. There are two types of changes: 

Feature change Changes in features and parameters of a specified version as well as the affected entities



Editorial change Changes in wording or addition of information and any related parameters affected by editorial changes. Editorial change does not specify the affected entities.

eRAN11.1 01 (2016-03-07)

This issue does not include any changes. eRAN11.1 Draft B (2015-12-30)

This issue includes the following changes. Change Type

Change Description

Parameter Change

Affected Entity

Feature change

None

None

None

Editorial change

Revised descriptions in the document.

None

N/A

eRAN11.1 Draft A (2015-12-07)

Compared with Issue 02 (2015-06-30) of eRAN8.1, Draft A (2015-12-07) of eRAN11.1 includes the following changes. Change Type

Change Description

Feature Added the threshold of the total number of handovers from the change local cell to all inter-RAT neighboring cells and the statistics collection period. The eNodeB determines whether to remove neighbor relationships from an inter-RAT neighboring relation table (NRT) when the number of inter-RAT neighbor relationships has reached the maximum or whether to periodically remove redundant neighbor relationships from the inter-RAT NRT based on these parameters. This addition separates intra-RAT parameters from inter-RAT parameters. For details, see 5.3.3 NCL/NRT Entry Removal.

Paramet

Added the following parameters:  ANR.StaPeriodForIRatNRT  ANR.StaNumForIRatNRTD

Optimized the X2 conditions based on which the eNodeB deletes redundant intra-RAT external cells from the neighboring cell list (NCL). The eNodeB deletes redundant intra-RAT external cells from the NCL only when X2-based neighboring cell addition is enabled and no X2 interface is set up between the local eNodeB and the eNodeB serving the external cells in the intra-RAT NCL. For details, see 4.3.3.2 Removal of External Cells from an NCL.

None

Added successful handover times as a threshold for intra-RAT neighbor relationship classification. For details, see 6.2.1 Neighbor Relationship Classification.

Added the NCellClassMgt.HoSu

Added the intra-RAT neighbor relationship classification modes. For details, see 6.2.1 Neighbor Relationship Classification.

Added the NCellClassMgt.Intra

Added UTRAN and GERAN neighbor relationship classification. For details, see 6.3 Inter-RAT Neighbor Relationship Classification.

Added the following parameters:  IRATNCellClassMgt.RatTy  IRATNCellClassMgt.StatP  IRATNCellClassMgt. NCel

Added the Added the EXTENDED_NCELL_MNG_SW(EXTENDED_NCELL_MNG_SW) EXTENDED_NCELL_MNG_SW option to the CellAlgoSwitch.NCellClassMgtSw parameter. This option to the CellAlgoSwitch.NC option specifies whether to add extended neighbor relationships in

Change Type

Change Description

Paramet

the memory to the configuration database when intra-RAT or interRAT internal storage mode or neighbor relationship classification does not take effect. For details, see 6.2.1 Neighbor Relationship Classification and 6.3.1 Neighbor Relationship Classification. Added intra-RAT and UTRAN blacklisted neighbor relationship management. For details, see 6.2.2 Blacklisted Neighbor Relationship Management and 6.3.2 Blacklisted Neighbor Relationship Management. For detailed configurations, see 11 Engineering Guidelines for Intra-RAT ANR and 12 Engineering Guidelines for Inter-RAT ANR.

Added the following parameters:  NCellParaCfg. RatType  NCellParaCfg.HoStatThd  NCellParaCfg.HoSuccThd  NCellParaCfg.NCellOdDis

Modified the following parameters. For details, see 3.4 Added the following parameters: Requirements of UEs for ANR.  CellDrxSpecialPara.LongD  The Drx.LongDrxCycleForAnr parameter is changed to the  CellDrxSpecialPara.LongD CellDrxSpecialPara.LongDrxCycleForIntraRatAnr  CellDrxSpecialPara.FddAn parameter.  The Drx.LongDRXCycleforIRatAnr parameter is changed to the CellDrxSpecialPara.LongDrxCycleForInterRatAnr parameter.  The Drx.DrxInactivityTimerForAnr parameter is changed to the CellDrxSpecialPara.FddAnrDrxInactivityTimer parameter. Added a switch to control intra-RAT backward ANR. For details, see 4.5 Intra-RAT Backward ANR.

Added the CellAlgoSwitch.AnrA

Added a parameter for NCL/NRT self-management based on X2 messages. For details, see 4.6 NCL/NRT Self-Management Based on X2 Messages.

Added the GlobalProcSwitch.X parameter. The following parameters are dis  GlobalProcSwitch.X2Base  GlobalProcSwitch.X2Base

Optimized the function of automatic optimization of neighbor relationships with cells having abnormal intra-RAT handover success rates. For details, see 4.3.5 Automatic Optimization of Neighbor Relationship Attributes.

Added the ANR.HoSucRateForC

Added a switch to control event-triggered ANR based on carrier aggregation (CA) measurements. For details, see 4.3.1.1 Automatic Detection of Missing Neighboring Cells.

Added the CaBasedEventAnrSw option to the ENodeBAlgoSwitc

Change Type

Change Description

Paramet

Added the InterFreqAngcAnrSw Added a switch to control inter-frequency event-triggered ANR based on Auto Neighbor Group Configuration (ANGC). For details, option to the ENodeBAlgoSwitc see 4.3.1.1 Automatic Detection of Missing Neighboring Cells.

Optimized removal of neighbor relationships from NRTs. For details, see 4.3.3.1 Removal of Neighbor Relationships from an NRT.

Added the following parameters:  NCellParaCfg.NcellNumFo  EutranInterNFreq.NcellNu  ANR.NcellCaThdForNRTD  ANR.StatPeriodCoeff

Optimized neighbor relationship classification. For details, see 6 Neighbor Relationship Classification.

Added the NCellClassMgt.CaSC

Added neighboring frequency addition based on X2 messages. For details, see 4.6.1 NCL/NRT Entry Addition and Update.

Added the ADD_FREQ_CFG_SW to the GlobalProcSwitch.X2Bas parameter.

Added ANR management on a per cell basis. For details, see 4 Intra-RAT ANR and 5 Inter-RAT ANR.

Added the CellAlgoSwitch.AnrF parameter provides the INTRA_RAT_ANR_SW(INTRA_ INTER_RAT_ANR_SW(INTER_

Editorial Revised descriptions in the document. change Revised the description about operations using the CME in the section "Engineering Guidelines."

1.4 Differences Between eNodeB Types Feature Support by Macro, Micro, and LampSite eNodeBs

None None

Feature ID

Feature Name

Supported by Macro eNodeBs

Supported by Micro eNodeBs

Supported by LampSite eNodeBs

LOFD-002001

Automatic Neighbour Relation (ANR)

Yes

Yes

Yes

LOFD-002002

Inter-RAT ANR

Yes

Yes

Yes

LOFD-081225

Neighbor Cell Classification Management

Yes

Yes

Yes

LBFD-081102

PLMN ID Management

Yes

Yes

Yes

Function Implementation in Macro, Micro, and LampSite eNodeBs

Function

Intra-eNodeB neighboring cells

2

Difference

Micro cells do not have intra-eNodeB neighboring cells. Descriptions of intra-eNodeB neighboring cells in this document apply to macro and LampSite eNodeBs, but not to micro eNodeBs.

Overview

2.1 Introduction Operation and maintenance (OM) of radio access networks has become increasingly complex, difficult, and costly because of the huge number of network elements, the implementation of different system standards, and the coexistence of different equipment vendors and telecom operators. To address this, 3GPP Release 8 introduces the self-organizing network (SON) solution. The main functions of SON are self-configuration, self-optimization, and self-healing. Automatic neighbor relation (ANR) is a self-optimization function of SON, as shown in Figure 2-1. ANR automatically detects and adds missing neighboring cells. It identifies and removes incorrect or redundant neighboring cells, and it automatically optimizes the attributes of neighbor relationships, such as the No HO attribute and blind handover priorities.

Figure 2-1 ANR diagram

2.2 Benefits ANR handles neighbor relationships of E-UTRAN cells with E-UTRAN, UTRAN, and GERAN cells. It automatically maintains the completeness, validity, and correctness of the neighbor relationships to improve network performance. In addition, ANR automatically optimizes the attributes of neighbor relationships, thereby reducing manual intervention while decreasing the costs of network planning, network optimization, and OM.

3

Concepts Related to ANR

This chapter describes the following basic ANR-related concepts: 

NCL



NRT



Blacklists and whitelist





Handover (HO) blacklist



HO whitelist



Radio resource control (RRC) blacklist



Black Neighboring Relation Table (BT) list

Requirements of UEs for ANR

3.1 NCL The NCLs of an eNodeB contain information about the external cells of the eNodeB. External cells belong to other base stations. An eNodeB has an intra-RAT NCL and inter-RAT NCLs, as shown in Figure 3-1. An inter-RAT NCL can be a GERAN NCL or a UTRAN NCL.

Figure 3-1 NCL diagram

ANR can automatically add external cells to NCLs, remove external cells from NCLs, or update the information about the external cells in NCLs. NOTE: For details about all attributes in an NCL, see 3900 Series Base Station MO and Parameter Reference. PCI refers to physical cell identifier. BSIC refers to base transceiver station identity code.

3.2 NRT The NRTs of a cell contain information about the neighbor relationships of the cell with its adjacent cells. A cell has intra- and inter-RAT NRTs. Intra-RAT NRTs contain an intra-frequency NRT and an intra-RAT inter-frequency NRT. The intra- and inter-RAT NRTs have different structures. Table 3-1 provides an example of an intra-RAT NRT in compliance with section 22.3.2a "Automatic Neighbour Relation Function" in 3GPP TS 36.300 V10.3.0. Compared with the structure in Table 3-1, the structure of Huawei intra-RAT NRTs does not contain the No X2 flag. Besides 3GPP-defined attributes, Huawei eNodeBs also supports some other special attributes used in Huawei features. These attributes include Blind handover Priority, Cell Measure Priority, and Neighbor Cell Classification Flag. For details about these attributes, see 3900 Series Base Station MO and Parameter Reference. Table 3-1 Example of main information of an intra-RAT NRT

SN

LCI

Target Cell PLMN

eNodeB ID

Cell ID

No Remove

No HO

1

LCI#1 46001

eNodeB ID#1

Cell ID#1

FORBID_RMV_ENUM FORBID_HO_ENUM

2

LCI#1 46001

eNodeB ID#2

Cell ID#2

PERMIT_RMV_ENUM PERMIT_HO_ENUM

3

LCI#1 46001

eNodeB ID#3

Cell ID#3

FORBID_RMV_ENUM FORBID_HO_ENUM

The following describes the details about the main information in Table 3-1: 

Local cell identifier (LCI): identifies the local cell of a neighbor relationship.



Target cell PLMN: identifies the public land mobile network (PLMN) of the operator who owns the target cell.



eNodeB ID: identifies the eNodeB that serves the target cell.



Cell ID: identifies the target cell.



No Remove: indicates whether ANR can remove the neighbor relationship from the NRT. The No Remove attribute is specified by the No remove indicator parameters of Huawei eNodeBs. The default values of these parameters are PERMIT_RMV_ENUM(Permit ANR Remove).





If the No remove indicator parameter is set to FORBID_RMV_ENUM(Forbid ANR Remove) for a neighbor relationship, ANR cannot remove the neighbor relationship from the NRT.



If the No remove indicator parameter is set to PERMIT_RMV_ENUM(Permit ANR Remove) for a neighbor relationship, ANR can remove the neighbor relationship from the NRT.

No HO: indicates whether the neighbor relationship can be used for handovers. The No HO attribute is specified by the No handover indicator parameters of Huawei eNodeBs. The default values of these parameters are PERMIT_HO_ENUM(Permit Ho). 

If the No handover indicator parameter is set to FORBID_HO_ENUM(Forbid Ho) for a neighbor relationship, the neighbor relationship cannot be used for handovers.



If the No handover indicator parameter is set to PERMIT_HO_ENUM(Permit Ho) for a neighbor relationship, the neighbor relationship can be used for handovers.

ANR can automatically add a neighbor relationship to an NRT or remove a neighbor relationship from the NRT. In addition, ANR can automatically optimize the configurations of neighbor relationships. NOTE:

If the name of a cell is manually changed, the name of this cell will be changed in all its NRTs. It is recommended that you change the cell name at an off-peak hour. Otherwise, the CPU usage may increases abruptly and the configuration database may be locked.

3.3 Blacklists and Whitelist HO Blacklist

The neighbor relationships in the HO blacklist must meet both of the following conditions: 

The No remove indicator parameter is set to FORBID_RMV_ENUM(Forbid ANR Remove).



The No handover indicator parameter is set to FORBID_HO_ENUM(Forbid Ho).

ANR cannot remove neighbor relationships in the HO blacklist. You can only manually configure the HO blacklist. For details about the HO blacklist, see section 5.2 "Specification level requirements" in 3GPP TS 32.511 V10.0.0. HO Whitelist

The neighbor relationships in the HO whitelist must meet both of the following conditions: 

The No remove indicator parameter is set to FORBID_RMV_ENUM(Forbid ANR Remove).



The No handover indicator parameter is set to PERMIT_HO_ENUM(Permit Ho).

ANR cannot remove neighbor relationships in the HO whitelist. You can only manually configure the HO whitelist. For details about the HO whitelist, see section 5.2 "Specification level requirements" in 3GPP TS 32.511 V10.0.0. RRC Blacklist

An RRC blacklist contains the neighboring cells that UEs are not allowed to measure. ANR cannot automatically detect the neighboring cells in the RRC blacklist. You can only manually configure the RRC blacklist. BT List

A BT list contains the neighboring cells that UEs are allowed to measure but are not allowed to be handed over to. ANR automatically detects the over-distant neighboring cells in the NRTs and adds them to the BT list. You can manually configure the BT list. eNodeBs support intra-RAT and UTRAN BT lists. The main information in the BT lists contains LCIs, cell global identifications (CGIs), and automatic configuration flags of the blacklisted neighboring cells.

3.4 Requirements of UEs for ANR

ANR requires that a UE read the CGIs of neighboring cells. The feature group indicators (FGI) field in the RRC_UE_CAP_INFO message indicates the capability of the UE to read the CGIs of neighboring cells. For details, see section B.1 "Feature group indicators" in 3GPP TS 36.331 V10.5.0. In summary, the FGI field settings for intra- and inter-RAT ANR are interpreted as follows: 

If the UE sets indicators 5 and 17 to 1, the UE supports intra-frequency ANR. If the UE sets indicators 5 and 18 to 1, the UE supports inter-frequency ANR.



If the UE sets indicators 5, 19, and 33 to 1, the UE supports ANR with UTRAN. If the UE sets indicators 5, 19, and 34 to 1, the UE supports ANR with GERAN. NOTE:

The FGI field related to ANR is defined in 3GPP Release 8. UEs that comply with 3GPP Release 8 or later may support ANR. Since 3GPP TS 36.331 V10.5.0, the size of the FGI field has been changed from 32 bits to 64 bits. The leftmost indicator is set to 1.

As defined in 3GPP specifications, an eNodeB sends a set of temporary DRX parameters to a UE for ANR measurements. The UE reads the CGIs of neighboring cells after the DRX mechanism starts in both the eNodeB and the UE. After the UE acquires the CGIs, the DRX mechanism stops in the eNodeB and the UE. This mechanism does not require the DRX feature to be activated. The ANR-dedicated long DRX cycles for intra- and inter-RAT ANR measurements are specified by the CellDrxSpecialPara.LongDrxCycleForIntraRatAnr and CellDrxSpecialPara.LongDrxCycleForInterRatAnr parameters, respectively. The ANRdedicated DRX inactivity timer is specified by the CellDrxSpecialPara.FddAnrDrxInactivityTimer parameter. For details about how DRX works in ANR measurements, see DRX and Signaling Control Feature Parameter Description. During CGI reading, smart preallocation may take effect or not, depending on the setting of the ANR.SmartPreallocationMode parameter. Smart preallocation takes effect during CGI reading only if this parameter is set to ENABLE(Enable) and smart preallocation function is enabled. For details about smart preallocation, see Scheduling Feature Parameter Description.

3.5 ANR Processing for Special UEs Some defective UEs may exist on a live network. For example, such a UE may report FGI indicators that are inconsistent with its capabilities or report incorrect CGIs. To prevent the negative impact of ANR measurements on such UEs and the network, the eNodeB does not instruct these UEs to perform ANR measurements. For details, see Terminal Awareness Differentiation Feature Parameter Description. The ANR.EventAnrWithVoipMode parameter specifies whether an eNodeB selects UEs using VoLTE services to perform measurements for event-triggered ANR with UTRAN and GERAN. 

The eNodeB selects UEs performing services with a QCI of 1 for measurements related to event-triggered ANR with UTRAN only if the

UTRAN_EVENT_ANR_WITH_VOIP_MODE(UTRAN_EVENT_ANR_WITH_VOIP _MODE) option of this parameter is selected. 

The eNodeB selects UEs performing services with a QCI of 1 for measurements related to event-triggered ANR with GERAN only if the GERAN_EVENT_ANR_WITH_VOIP_MODE(GERAN_EVENT_ANR_WITH_VOI P_MODE) option of this parameter is selected.

During the detection procedure of missing neighboring cells, the eNodeB determines whether to select CA UEs to perform measurements based on the ANR.CaUeChoseMode parameter setting: 

If this parameter is set to CA_UE_CAP(CA UE Capability), the eNodeB selects CAincapable UEs.



If this parameter is set to CA_UE_CARRIER_NUM(CA UE Carrier Number), the eNodeB selects the CA-capable UEs that are each served by one carrier.



If this parameter is set to CA_UE_CAP(CA UE Capability), the eNodeB selects the ANRcapable CA UEs.

4

Intra-RAT ANR

This chapter describes the optional features LOFD-002001 Automatic Neighbour Relation (ANR) .

4.1 Feature Description 4.1.1 LOFD-002001 Automatic Neighbour Relation (ANR) Descriptions of the LOFD-002001 Automatic Neighbour Relation (ANR) feature include the following: 

Intra-RAT NCL and NRT



Intra-RAT event-triggered ANR



Intra-RAT fast ANR



Intra-RAT backward ANR



NCL/NRT self-management based on X2 messages

Event-triggered ANR and fast ANR can be enabled simultaneously. If both are enabled, UEs perform both event-triggered measurements and periodic measurements. eNodeBs detect missing neighboring cells based on either event-triggered or periodic measurement reports.

NOTE: When the CPU usage of the main control board exceeds 80%, the eNodeB does not handle unknown CGIs or perform backward ANR to prevent system overload. The handling of unknown CGIs includes adding and updating NCL and NRT entries. For details, see 4.6.1 NCL/NRT Entry Addition and Update.

4.2 Intra-RAT NCL and NRT 4.2.1 NCL/NRT Control Mode External cells and neighbor relationships can be manually or automatically added to NCLs and NRTs, respectively. 

The Control Mode parameter can be set to AUTO_MODE(Auto Mode) or MANUAL_MODE(Manual Mode) for an external cell or a neighbor relationship that is manually added.



The Control Mode parameter is automatically set to AUTO_MODE(Auto Mode) for an external cell or a neighbor relationship that is automatically added by ANR. External cells and neighbor relationships for which the Control Mode parameter is set to AUTO_MODE(Auto Mode) can be maintained automatically by ANR.

Table 4-1 lists the parameters that specify the control mode for external cells in NCLs and neighbor relationships in NRTs. Table 4-1 Control mode parameters NCL/NRT

Parameter ID

External E-UTRAN cell EutranExternalCell.CtrlMode Intra-frequency neighbor relationship

EutranIntraFreqNCell.CtrlMode

Inter-frequency neighbor relationship

EutranInterFreqNCell.CtrlMode

Blacklisted neighboring EutranBlkNCell.CtrlMode E-UTRAN cell

4.2.2 NRT Optimization Mode Optimization mode specifies whether a piece of NRT optimization advice can be automatically delivered or requires manual confirmation. The ANR.OptMode parameter specifies the delivery mode for the intra-RAT NRT optimization advice generated by event-triggered ANR, fast ANR, and automatic optimization of neighbor relationship attributes as well as BT optimization advice automatically generated by ANR. 

When this parameter is set to FREE(FREE), the optimization advice takes effect directly.



When this parameter is set to CONTROLLED(CONTROLLED), the ANR.OptModeStrategy parameter specifies whether the eNodeB reports the optimization advice of neighbor relationships with E-UTRAN cells to the U2000. 

When the EutranCtrlOptMode(EUTRANCtrlOptMode) option of the ANR.OptModeStrategy parameter is selected, the eNodeB reports only the NRT optimization advice generated by by event-triggered ANR, fast ANR, and automatic optimization of neighbor relationship attributes, and operators determine whether to take the advice on the U2000. The optimization is subject to the manual confirmation.



When the EutranCtrlOptMode(EUTRANCtrlOptMode) option of the ANR.OptModeStrategy parameter is deselected, the eNodeB reports only the BT optimization advice automatically generated by ANR for neighbor relationships with E-UTRAN cells to the U2000, and operators determine whether to take the advice on the U2000. The optimization is subject to the manual confirmation.

When the NRT optimization advice takes effect in controlled mode, the collaboration between ANR management of missing neighboring cells and handovers varies depending on the target RATs of handovers: 



Handovers to E-UTRAN or GERAN cells: After receiving handover measurement reports from UEs, the eNodeB evaluates the handovers depending on the ANR.AnrControlledHoStrategy parameter settings and whether operators have confirmed the optimization advice to add the neighbor relationships with the target cells to the NRTs. 

If the ANR.AnrControlledHoStrategy parameter is set to PERMIT_HO(PERMIT_HO), the eNodeB performs the handovers regardless of whether operators have confirmed the advice.



If the ANR.AnrControlledHoStrategy parameter is set to FORBID_HO(FORBID_HO), the eNodeB performs the handovers only when operators have confirmed the advice. To avoid RRC connection reestablishments and service drops caused by handover failures, operators must confirm the optimization advice in a timely manner when the ANR.AnrControlledHoStrategy parameter is set to FORBID_HO(FORBID_HO).

Handovers to UTRAN cells: The eNodeB delivers only the UTRAN cells included in the NRT to UEs for handover measurement. Therefore, if operators do not confirm the optimization advice to add the neighbor relationship with a UTRAN cell to the NRT, the eNodeB does not hand over UEs to the UTRAN cell.

4.2.3 Parameters Related to NCL/NRT Management Neighbor relationship management of ANR refers to detect and modify external cells or neighbor relationships in NCLs or NRTs, and delete them from NCLs or NRTs based on the Uu measurement results or handover statistics. Neighbor relationship management of ANR takes effect on a per eNodeB, cell, or frequency basis, each controlled by eNodeB-, cell-, and frequency-specific ANR parameters.



eNodeB-specific parameters eNodeB-specific parameters must be set to implement intra-RAT ANR.



Cell-specific parameters If intra-RAT ANR is required for a cell served by an eNodeB with intra-RAT ANR enabled, the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the CellAlgoSwitch.AnrFunctionSwitch parameter must be selected for this cell.



Frequency-specific parameters ANR can be further enabled for neighboring cells on different frequencies of a cell. 

The Cell.IntraFreqAnrInd parameter specifies whether to allow ANR management of external cells on the serving frequency and neighbor relationships with these cells.



The EutranInterNFreq.AnrInd parameter specifies whether to allow ANR management of external cells on a neighboring E-UTRAN frequency and neighbor relationships with these cells.

NOTE: NCLs are configured on a per eNodeB basis. An eNodeB adheres to the following rules when configuring NCLs:  

External cells are added to an NCL based on the frequency indicators of the source cells. External cells can be directly deleted from NCLs if each cell served by the eNodeB does not have neighbor relationships with the external cells.

4.3 Event-triggered ANR Event-triggered ANR includes detection of intra-RAT missing neighboring cells by using eventtriggered UE measurements and UE history information and automatic maintenance of intraRAT NCLs and NRTs. Intra-RAT event-triggered ANR is controlled by the IntraRatEventAnrSwitch(IntraRatEventAnrSwitch) option of the eNodeB-specific ENodeBAlgoSwitch.AnrSwitch parameter, and cell- and frequency-specific ANR indicators. For details, see 4.2.3 Parameters Related to NCL/NRT Management. Event-triggered ANR includes the following functions: 

Automatic detection and addition of missing neighboring cells



NCL entry modification



NCL/NRT entry removal



Detection of abnormal intra-RAT neighboring cell coverage



Automatic optimization of neighbor relationship attributes

4.3.1 Automatic Detection and Addition of Missing Neighboring Cells 4.3.1.1 Automatic Detection of Missing Neighboring Cells

Intra-RAT event-triggered ANR detects missing intra-RAT neighboring cells based on the cell lists in intra- and inter-frequency measurement reports. This type of ANR is triggered by intraRAT handover measurements. Automatic detection of missing neighboring cell takes effect only after event-triggered ANR is enabled. Table 4-2 lists types of handover measurements and related eNodeB-specific parameters. Table 4-2 Types of intra-RAT handover measurements and related eNodeB-specific parameters Handover Measurement Type

Parameters

Coverage-based handover measurements

None

Inter-frequency MLB measurements

MlbBasedEventAnrSwitch(MlbBasedEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter

Service-based handover measurements

ServiceBasedEventAnrSwitch(ServiceBasedEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter

Other types of handover measurements

IntraRatEnhancedEventAnrSwitch(IntraRatEnhancedEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter

CA measurements

CaBasedEventAnrSwitch(CaBasedEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter

Measurements based on Auto Neighbor Group Configuration (ANGC)

InterFreqAngcAnrSwitch(InterFreqAngcAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter

NOTE: Other types of handovers include distance-based inter-frequency handover and uplink-quality-based inter-frequency handover. For details about different types of handovers, see Intra-RAT Mobility Management in Connected Mode Feature Parameter Description. CA measurements include measurements for PCC anchoring, SCell configuration, and SCell change. For details, see Carrier Aggregation Feature Parameter Description. For details about ANGC-based measurements, see Auto Neighbor Group Configuration Feature Parameter Description.

Assume that a UE is served by cell A of the source eNodeB and that cell B is an intra-RAT adjacent cell of cell A. Figure 4-1 illustrates how the eNodeB uses event-triggered UE measurements to detect cell B. Figure 4-1 Procedure for using event-triggered UE measurements to detect a missing intra-RAT neighboring cell

1. The source eNodeB delivers the measurement configuration to the UE, instructing the UE to measure adjacent cells and detect missing neighboring cells. By default, the UE performs intra-frequency measurements. When a UE establishes radio bearers, the source eNodeB delivers the intra-frequency measurement configuration to the UE in an RRC Connection Reconfiguration message by default. When inter-frequency measurements are required, the source eNodeB must deliver the inter-frequency measurement configuration to the UE to set up inter-frequency measurement gaps. For details about intra-frequency and inter-frequency measurements, see Intra-RAT Mobility Management in Connected Mode Feature Parameter Description. 2. The UE detects that cell B meets the measurement requirements, so the UE reports the PCI of cell B to the source eNodeB. Note that the UE does not report the PCIs of the cells in the RRC blacklist to the eNodeB. 3. The source eNodeB checks whether cell B has the strongest signal and whether the PCI of cell B is unknown to the source eNodeB. The ANR.EventAnrMode parameter specifies whether a neighboring cell is unknown. 

When this parameter is set to NOT_BASED_NCL(NOT_BASED_NCL), the NRT is used to determine whether the PCI of cell B is unknown.



When this parameter is set to BASED_NCL(BASED_NCL), the NCL is used to determine whether the PCI of cell B is unknown.

4. The source eNodeB instructs the UE to read the ECGI, tracking area code (TAC), and PLMN list of cell B. Timer T321 controls the maximum time a UE can spend reading ECGIs. The following table describes when the timer starts, stops, and expires. For the timer values, see 5.5.2.3 "Measurement identity addition/modification" in 3GPP TS 36.331 V10.5.0. Timer

T321

Start

Stop

Upon receiving measConfig including a reportConfig with the purpose set to reportCGI

Upon acquiring the information needed to set all fields of cellGlobalId for the requested cell, upon receiving measConfig that includes removal of the reportConfig with the purpose set to reportCGI

At Expiry

Initiate the measurement reporting procedure, stop performing the related measurements, and remove the corresponding measId

5. The UE reports the ECGI, TAC, and PLMN list of cell B to the source eNodeB. After detecting the missing neighboring cell, the source eNodeB adds and updates the entries in the NCL or NRT. For details, see 4.3.1.2 Automatic Addition of Missing Neighboring Cells. In some special networking scenarios (for example, a large number of micro eNodeBs are deployed around macro eNodeBs), cells served by some specific eNodeBs are allocated with PCIs in a specified PCI group and these cells may share the PCI in the group. In this case, neighbor relationships with these cells need to be specially managed. For details, see Specified PCI Group-based Neighboring Cell Management Feature Parameter Description.

4.3.1.2 Automatic Addition of Missing Neighboring Cells When event-triggered ANR detects a missing neighboring cell by using UE measurements, the eNodeB adds the detected cell to the NCL and the neighbor relationship with the detected cell to the NRT based on the reported PCI and reference signal received power (RSRP) or reference signal received quality (RSRQ) of the cell in the intra-RAT handover measurement report and the ANR.EventAnrMode parameter setting. 

When this parameter is set to NOT_BASED_NCL(NOT_BASED_NCL), the eNodeB instructs the UE to read the ECGI of the missing neighboring cell and adds the missing cell to the NCL and the neighbor relationship with this detected cell to the NRT according to the ECGI reading result. 

If the reported ECGI of the detected cell is included in the NCL, the eNodeB directly adds a neighbor relationship with the detected cell to the NRT.



If the reported ECGI of the detected cell is not included in the NCL, the eNodeB adds the detected cell to the NCL of the eNodeB and adds the neighbor relationship with the detected cell to NRT of the local cell.



When this parameter is set to BASED_NCL(BASED_NCL), the eNodeB performs the following: 

If the reported ECGI of the detected cell is included in the NCL, the eNodeB adds the neighbor relationship with the detected cell to the NRT of the source cell and adds the neighbor relationship with source cell to the NRT of the detected cell.



If the reported ECGI of the detected cell is not included in the NCL, the eNodeB instructs the UE to read the ECGI of the cell and adds a neighbor relationship to the NRT according to the ECGI reading result.

4.3.2 NCL Entry Modification After a UE reports the CGI of a missing neighboring cell to an eNodeB, the eNodeB checks whether the reported information about the detected cell is consistent with the external cell information in the NCL. If the reported information is inconsistent with the external cell information, the eNodeB automatically synchronizes the NCL with the reported information. The reported information includes the downlink E-UTRA absolute radio frequency channel number (EARFCN), PCI, TAC, PLMN list, and secondary frequency band.

4.3.3 NCL/NRT Entry Removal Event-triggered ANR can automatically remove the external cell or neighbor relationship if the Control Mode and No remove indicator parameters for the external cell or neighbor relationship is set to AUTO_MODE(Auto Mode) and PERMIT_RMV_ENUM(Permit ANR Remove), respectively. The automatic removal function is controlled by the IntraRatAnrAutoDelSwitch(IntraRatAnrAutoDelSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter. ANR now supports three types of automatic neighbor relationship removal. Table 4-3 lists the related options controlling the automatic removal functions. Table 4-3 Options controlling the automatic removal functions Scenario

PriorityNone based removal when the number of neighbor relationships reaches its maximum (hereinafter referred to as prioritybased removal)

Option

Scenario

Option

EUTRAN_DELCELLERRORNCELL(EUTRAN_DELCELLERRORNCELL) of Removal of inappropriate the ANR.NrtDelMode parameter neighbor relationships Removal of redundant neighbor relationships

EUTRAN_DELREDUNDANCENCELL(EUTRAN_DELREDUNDANCENCELL) of the ANR.NrtDelMode parameter

NOTE: For details about the maximum number of external cells in an NCL and the maximum number of neighbor relationships in an NRT, see 3900 Series Base Station MO and Parameter Reference or 3900 Series Base Station MO Reference.

4.3.3.1 Removal of Neighbor Relationships from an NRT Priority-based Removal

When the number of neighbor relationships in the NRT has reached its maximum, ANR removes a certain neighbor relationship before it adds a new neighbor relationship. After intra-RAT event-triggered ANR is enabled, a measurement period specified by the ANR.StatisticPeriodForNRTDel parameter starts. The eNodeB determines whether to remove the neighbor relationship with a neighboring cell based on the following factors: 

The number of handovers from the local cell to the neighboring cell within the last measurement period



The number of measurement reports that include the neighboring cell within the last measurement period



The number of times the neighboring cell is configured as an SCell



The number of neighboring cells on the frequency



The frequency priorities for ANR

Figure 4-2 shows the priority-based removal procedure.

Figure 4-2 Priority-based removal

During priority-based removal, the eNodeB preferentially removes a neighbor relationship for which the No handover indicator parameter is set to PERMIT_HO_ENUM(Permit Ho) from the candidate neighbor relationships. Removal of Inappropriate Neighbor Relationships

If the number of handovers from a cell (for example, cell A) served by the local eNodeB to a neighboring cell (for example, cell B) reaches the value of the ANR.NcellHoStatNum parameter, and the handover success rate is less than or equal to the value of the ANR.DelCellThd parameter within a measurement period specified by the ANR.StatisticPeriod parameter, the local eNodeB removes the neighbor relationship of cell A with cell B. In addition, if cell B is not configured as a neighboring cell of any other cell served by the local eNodeB, the eNodeB removes cell B from the NCL. NOTE: In ANR, RRC connection reestablishments are not counted in the number of handover attempts and the number of successful handovers. The measurement methods of the two numbers are different from those of the related performance counters.

Removal of Redundant Neighbor Relationships

This removal function takes effect on intra-RAT neighbor relationships only when the local cell is configured with more than a specified number of neighboring cells. The number of required intra-frequency neighboring cells is specified by the NCellParaCfg.NcellNumForAnr parameter. The number of inter-frequency neighboring cells is specified by the EUTRANINTERNFREQ.NcellNumForAnr parameter. A neighbor relationship is redundant if the following conditions are met within each of ANR.StatPeriodCoeff consecutive measurement periods: 

The total number of handovers from the local cell to all its neighboring E-UTRAN cells is greater than or equal to the ANR.StatisticNumForNRTDel parameter value.



The number of handovers from the local cell to this neighboring cell is 0.



The neighboring cell is not configured as an SCell for any UE in the local cell.

This removal function does not apply to the neighboring cells that meet any of the following conditions: 

The blind-handover priority is set to a non-zero value.



The Overlap Indicator parameter is set to YES(YES).



The No handover indicator parameter is set to FORBID_HO_ENUM(Forbid Ho).



The Plmn List Type parameter is set to GREY_LIST(GREY_LIST). NOTE:

Adding neighboring cells at the PLMN borders to a greylist prevents the UEs from repeatedly reading the CGIs of inter-PLMN neighboring cells, which consumes UE power. This also helps detect possible PCI conflicts, which affect handovers.

Punishment Mechanism of Removed Neighbor Relationships

When a neighbor relationship with an E-UTRAN cell is automatically removed by ANR, the punishment mechanism of removed neighbor relationships can prevent this neighbor relationship from being added back to the NRT within a short period. When a neighbor relationship with an E-UTRAN cell is automatically removed by ANR, the eNodeB stores the neighbor relationship in an eNodeB-maintained temporary list. If the number of times the neighbor relationship is required to be added to the intra-RAT NRT is greater than or equal to the ANR.EutranNcellDelPunNum parameter value within a measurement period specified by the ANR.NcellDelPunishPeriod parameter, the eNodeB re-adds the neighbor relationship to the NRT. Otherwise, the eNodeB does not re-add the neighbor relationship to the NRT. NOTE: Removed neighbor relationships under punishment are stored on a temporary list in the eNodeB. The list is cleared if the eNodeB resets. The list can be regenerated after the punishment mechanism evaluates neighbor relationships again. If the punishment mechanism is active, the number of neighbor relationships may increase after the eNodeB is reset and the number can be restored by using the punishment mechanism.

Removal of Neighbor Relationships with Specific Configurations

During automatic removal of neighbor relationships, the eNodeB does not remove a neighbor relationship if one of the following conditions is met: 

The MLB_DELNCELCTRL(MLB_DELNCELCTRL) option of the ANR.NrtDelMode parameter is selected, and the OverlapInd parameter is set to YES(YES) for the neighbor relationship.



The CA_DELNCELCTRL(CA_DELNCELCTRL) option of the ANR.NrtDelMode parameter is selected and the neighbor relationship with the cell has been configured in the CaGroupSCellCfg MO with SCellBlindCfgFlag set to TRUE(TRUE).



The BLINDHO_DELNCELCTRL(BLINDHO_DELNCELCTRL) option of the ANR.NrtDelMode parameter is selected and the BlindHoPriority parameter is set to a non-zero value for the neighbor relationship.

4.3.3.2 Removal of External Cells from an NCL The eNodeB removes from an NCL an external cell for which the Control Mode parameter is set to AUTO_MODE(Auto Mode) in the following scenarios. Specification-based External Cell Removal

A new external cell may need to be added by ANR when the number of external cells in an NCL has reached its maximum. If no cells served by the local eNodeB have a neighbor relationship or a blacklisted neighbor relationship with an external cell, the eNodeB removes the external cell from the NCL.

This operation is not parameter-controlled. Removal of Redundant External Cells from an NCL

After the intra-RAT event-triggered ANR and neighbor relationship removal functions are enabled, a measurement period specified by the ANR.StatisticPeriodForNRTDel parameter starts. At the end of four consecutive measurement periods, the eNodeB removes the external cell that meets certain conditions. In intra-RAT event-triggered ANR, the eNodeB removes the external cell that meets both of the following conditions: 

No cells served by the local eNodeB have a neighbor relationship or a blacklisted neighbor relationship with the external cell.



No X2 interface is set up between the local eNodeB and the eNodeB that serves the external cell if the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected.

4.3.4 Detection of Abnormal Intra-RAT Neighboring Cell Coverage Intra-RAT event-triggered ANR can use the U2000 to detect intra-RAT neighboring cells that provide abnormal coverage. As shown in Figure 4-3, if UEs in cell A detect signals from cell B, ANR considers cell B to be a neighboring cell of cell A and adds cell B to an NCL and NRT. However, from a topology perspective, the two cells do not meet neighbor relationship requirements. In this situation, the coverage of cell B is regarded as being abnormal. This type of coverage is also called overshoot coverage. Overshoot coverage may result in handovers to inappropriate target cells, affecting handover-related key performance indicators (KPIs). Figure 4-3 Abnormal neighboring cell coverage

If the IntraRatEventAnrSwitch(IntraRatEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter and the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the CellAlgoSwitch.AnrFunctionSwitch parameter are selected, the U2000 triggers the algorithm for detecting abnormal neighboring cell coverage at an operator's request. The U2000 checks for abnormal neighboring cell coverage based on the latitudes and longitudes of the serving cell and

its neighboring cells. Then, the U2000 collects statistics about abnormal neighboring cell coverage and generates a list of neighboring cells with abnormal coverage. NOTE: The algorithm for automatically detecting abnormal neighboring cell coverage requires accurate latitudes and longitudes of the eNodeBs and sectors. If the latitudes and longitudes are not set or incorrectly set, the detection results may be inaccurate. The eNodeB can detect over-distant neighboring cells and manage blacklisted neighbor relationships with these cells. For details, see 6 Neighbor Relationship Classification.

To view neighboring cells with abnormal coverage on the U2000, perform the following steps: 1. Log in to the U2000 client. 2. Choose SON > LTE ANR. 3. On the Neighboring Cell Management tab page, view the neighboring cells in the Query Cross-Coverage Cell pane.

4.3.5 Automatic Optimization of Neighbor Relationship Attributes ANR identifies neighbor relationships with cells for which the handover statistics are abnormal and optimizes the inappropriate neighbor relationships. This function prevents handover failures due to inappropriate neighbor relationships and maintains a stable handover success rate. This function is supported by only intra-RAT event-triggered ANR. This function is controlled by the IntraRatNoHoSetAnrSwitch(IntraRatNoHoSetAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter. After this function is enabled, the eNodeB proceeds as follows based on the ANR.NoHoSetMode parameter setting: 

If the ANR.NoHoSetMode parameter is set to NO_CHECK(NO_CHECK), when a neighbor relationship meets all of the following conditions at the end of a measurement period defined by ANR.StatisticPeriod: 

The number of handovers from the local cell to the neighboring cell is greater than or equal to the ANR.NcellHoStatNum parameter value.



The success rate of handovers from the local cell to the neighboring cell is less than or equal to the ANR.NoHoSetThd parameter value.



The Control Mode parameter for the neighbor relationship is set to AUTO_MODE(Auto Mode).

Then, ANR automatically sets the No handover indicator parameter to FORBID_HO_ENUM(Forbid Ho) for the neighbor relationship. 

If the ANR.NoHoSetMode parameter is set to PCI_CHECK(PCI_CHECK), when a neighbor relationship meets all of the following conditions at the end of a measurement period defined by ANR.StatisticPeriod:



The number of handovers from the local cell to the neighboring cell is greater than or equal to the ANR.NcellHoStatNum parameter value.



The Control Mode parameter for the neighbor relationship is set to AUTO_MODE(Auto Mode).

Then, if the success rate of handovers from the local cell to the neighboring cell is less than or equal to the ANR.HoSucRateForCgiRead parameter value, the eNodeB instructs the UE to perform ECGI reading when a UE reports a measurement report for an intra-RAT handover containing the same EARFCN and PCI as the neighboring cell within the next measurement period. If an unknown cell is read, the eNodeB adds this cell to the NCL and adds the neighbor relationship with this cell to an NRT of the local cell. If the success rate of handovers from the local cell to a neighboring cell is less than or equal to the ANR.NOHOSetThd parameter value in the next measurement period after ECGI reading is triggered, ANR automatically sets the No handover indicator parameter to FORBID_HO_ENUM(Forbid Ho) for the neighbor relationship. Otherwise, ANR does not change the No handover indicator parameter value. After ANR sets the No handover indicator parameter to FORBID_HO_ENUM(Forbid Ho) for a neighbor relationship, ANR cannot automatically revert the attribute setting. Operators should manually optimize or remove this neighbor relationship. After optimizing the relationship, operators should manually set the No handover indicator parameter to PERMIT_HO_ENUM(Permit Ho). NOTE: 





If the ANR.NoHoSetMode parameter is set to PCI_CHECK(PCI_CHECK), it is recommended that the ANR.HoSucRateForCgiRead parameter be set to a value greater than ANR.NoHoSetThd parameter value. Otherwise, ANR may directly set the No handover indicator parameter to FORBID_HO_ENUM(Forbid Ho) for the neighbor relationship without instructing the UE to perform ECGI reading. If both the IntraRatAnrAutoDelSwitch(IntraRatAnrAutoDelSwitch) and IntraRatNoHoSetAnrSwitch(IntraRatNoHoSetAnrSwitch) options of the ENodeBAlgoSwitch.AnrSwitch parameter are selected, it is recommended that the ANR.DelCellThd parameter be set to a value less than or equal to the ANR.NoHoSetThd parameter value. In ANR, RRC connection reestablishments are not counted in the number of handover attempts and the number of successful handovers. The measurement methods of the two numbers are different from those of the related performance counters.

4.4 Fast ANR Fast ANR is also known as periodic ANR. It detects missing intra-RAT neighboring cells based on periodic UE measurement reports and adds the missing neighboring cells. Fast ANR is controlled by the IntraRatFastAnrSwitch(IntraRatFastAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter, and cell- and frequency-specific ANR indicators. For details, see 4.2.3 Parameters Related to NCL/NRT Management.

4.4.1 Automatic Detection and Addition of Missing Neighboring Cells

4.4.1.1 Automatic Detection of Missing Neighboring Cells Figure 4-4 illustrates the procedure for using fast ANR to detect missing neighboring cells.

Figure 4-4 Procedure for using fast ANR to detect missing neighboring cells

The procedure is as follows: 1. An eNodeB starts a fast ANR check period (whose duration is specified by the ANR.FastAnrCheckPeriod parameter) and selects a number of UEs to simultaneously perform fast ANR measurements. The maximum number of UEs is specified by the ANR.FastAnrIntraRatMeasUeNum parameter. UEs performing voice over IP (VoIP) services do not perform fast ANR measurements. If a UE initiates a VoIP service and sets up bearers with QCI1 after being selected to perform fast ANR measurements, the eNodeB takes different actions on the measurement configuration delivered to the UE depending on the setting of the GlobalProcSwitch.VoipWithGapMode parameter. 

If this parameter is set to ENABLE(enable), the eNodeB does not delete the fastANR-related measurement configuration.



If this parameter is set to DISABLE(disable), the eNodeB delivers an RRC Connection Reconfiguration message to delete the fast-ANR-related measurement configuration.

When inter-frequency measurements are required, the source eNodeB must deliver the inter-frequency measurement configuration to the UE to set up inter-frequency measurement gaps. Two gap patterns are defined in section 8.1.2 "Requirements" of 3GPP TS 36.133 V10.2.0: pattern 0 and pattern 1. To speed up the measurements, the eNodeB uses pattern 0 by default. In pattern 0, the measurement gap length is 6 ms, and the repetition period is 40 ms. 2. The UEs send measurement reports at an interval specified by the ANR.FastAnrRprtInterval parameter to the eNodeB. The measurement reports contain neighboring cells whose signal quality is higher than or equal to the corresponding threshold. The maximum number of periodic measurement reports that a UE can send is specified by the ANR.FastAnrRprtAmount parameter. The E-UTRAN signal quality threshold is defined by the ANR.FastAnrRsrpThd parameter. If intra-RAT fast ANR is enabled, it is recommended that the ANR.FastAnrRprtAmount parameter not be set to r1(1). This is because a UE may report only the serving cell information in the first measurement report during intra-RAT fast ANR. According to section 5.5.4.1 "General" in 3GPP TS 36.331 V10.1.0, if purpose is set to reportStrongestCells, the UE initiates a first measurement report immediately after the quantity to be reported becomes available for at least either all serving cells or one of the applicable cells. Therefore, this IE might include the information only about the serving cell. A measurement report can contain multiple adjacent E-UTRAN cells. 3. Based on check results in a fast ANR check period, the eNodeB performs the following: 

If an unknown cell is reported, the eNodeB sets the number of UEs that have performed measurements in the check period to 0 and then selects a number of UEs specified by the ANR.FastAnrIntraRatMeasUeNum parameter to perform measurements. If the UEs report multiple adjacent E-UTRAN cells, the eNodeB

instructs the UEs to read the CGI of the strongest cell. Then, the eNodeB adds the detected cell to an NCL and NRT. For details about the policies for adding the cell to the NCL and NRT, see 4.4.1.2 Automatic Addition of Missing Neighboring Cells. 

If no unknown cell is reported, the check period ends. The eNodeB checks the total number of UEs that have performed measurements. If the total number is less than the ANR.FastAnrIntraRatUeNumThd parameter value, the eNodeB starts the next round of fast ANR measurements. If the total number is greater than or equal to the ANR.FastAnrIntraRatUeNumThd parameter value, the eNodeB enters the monitoring state. In this state, the eNodeB does not select UEs for fast ANR measurements but monitors whether event-triggered ANR measurement reports contain the PCI of an unknown cell. The eNodeB stays in the monitoring state until it receives a measurement report that contains the PCI of an unknown cell. When the eNodeB exits the monitoring state, it starts measurements again.

4.4.1.2 Automatic Addition of Missing Neighboring Cells If fast ANR detects missing intra-frequency neighboring cells, the eNodeB handles the detected cells as follows: 



The ANR.FastAnrMode parameter is set to NCL_NRT_MODE(NCL and NRT Mode) or NCL_MODE(NCL Mode): 

The eNodeB does not add the strongest or second strongest intra-eNodeB missing neighboring cell to the NCL or add the neighbor relationship with this cell to the NRT.



The eNodeB adds the strongest and second strongest inter-eNodeB missing neighboring cells to the NCL.

The ANR.FastAnrMode parameter is set to NRT_MODE(NRT_MODE): 

The eNodeB instructs the UE to read the ECGIs of the strongest and second strongest intra-eNodeB missing neighboring cells and adds the neighbor relationships with these cells to the NRT based on the ECGI reading results instead of the information in the NCL.



The eNodeB instructs the UE to read the ECGIs of the strongest and second strongest inter-eNodeB missing neighboring cells and adds these neighboring cells to the NCL and the neighbor relationships with these cells to the NRT based on the ECGI reading results.

If fast ANR detects missing inter-frequency neighboring cells, the eNodeB handles the detected cells as follows: 

The ANR.FastAnrMode parameter is set to NCL_NRT_MODE(NCL and NRT Mode): 

The eNodeB adds the neighbor relationship with the strongest intra-eNodeB missing neighboring cell to the NRT.



The eNodeB adds the neighbor relationship with the strongest inter-eNodeB missing neighboring cell to the NRT and adds the strongest inter-eNodeB missing neighboring cell to the NCL.







The eNodeB does not add the second strongest intra-eNodeB missing neighboring cell to the NCL or add the neighbor relationship with this cell to the NRT.



The eNodeB adds the second strongest inter-eNodeB missing neighboring cell to the NCL.

The ANR.FastAnrMode parameter is set to NCL_MODE(NCL Mode): 

The eNodeB does not add the strongest or second strongest intra-eNodeB missing neighboring cell to the NCL or add the neighbor relationship with this cell to the NRT.



The eNodeB adds the strongest and second strongest inter-eNodeB missing neighboring cells to the NCL.

The ANR.FastAnrMode parameter is set to NRT_MODE(NRT_MODE): 

The eNodeB instructs the UE to read the ECGIs of the strongest and second strongest intra-eNodeB missing neighboring cells and adds the neighbor relationships with these cells to the NRT based on the ECGI reading results instead of the information in the NCL.



The eNodeB instructs the UE to read the ECGIs of the strongest and second strongest inter-eNodeB missing neighboring cells and adds these neighboring cells to the NCL and the neighbor relationships with these cells to the NRT based on the ECGI reading results.

4.4.2 Modifying an NCL Entry Fast ANR modifies external cells in NCLs in the same way as event-triggered ANR. For details, see 4.3.2 NCL Entry Modification.

4.5 Intra-RAT Backward ANR In backward ANR, the target cell can add the source cell to an NCL and NRT after obtaining the information about the source cell. Intra-RAT backward ANR adds a neighbor relationship of a target cell with a source cell in a handover. When intra-RAT event-triggered ANR or fast ANR is enabled, intra-RAT backward ANR is controlled by the BACKWARD_ANR_SW(BACKWARD_ANR_SW) option of the CellAlgoSwitch.AnrAlgoSwitch parameter. If a neighbor relationship with an inter-eNodeB cell of a local cell is added to the NRT of the local cell, a neighbor relationship with the local cell of the inter-eNodeB cell can be added to the NRT of the inter-eNodeB cell based on UE history information. According to section 9.2.1.42 "UE History Information" of 3GPP TS 36.413 V10.1.0 and section 9.2.38 "UE History Information" of 3GPP TS 36.423 V10.1.0, the IE UE History Information contains information about cells that a UE has been served by in active state prior to the target cell. The information includes the ECGI, cell type, and duration of stay. Figure 4-5 illustrates the procedure for using UE history information to detect a missing intraRAT neighboring cell. This procedure is triggered by an intra-RAT handover.

Figure 4-5 Procedure for using UE history information to detect a missing intra-RAT neighboring cell

1. The source eNodeB sends a handover request message to the target eNodeB. 2. After obtaining the UE history information from the message, the target eNodeB checks whether the ECGI of the last visited cell (in this example, the source cell) exists in the intra-RAT NCL and an intra-RAT NRT of the target eNodeB. 

If the ECGI exists in the NCL but does not exist in the NRT, the target eNodeB adds the neighbor relationship with the source cell to the NRT and the procedure ends.



If the ECGI does not exist in the NCL, the target eNodeB proceeds to 3.

3. The target eNodeB reports the ECGI of the source cell to the U2000. 4. The U2000 queries the PCI, TAC, and PLMN list of the source cell identified by the reported ECGI and sends the results to the target eNodeB. Then, the target eNodeB adds the missing neighboring cell to an NCL and the missing neighbor relationship to the NRT, and the procedures ends. If the target cell and source cell are not managed by the same U2000, operators can import the information of the target cell to the U2000 that manages the source cell. Then, intra-RAT backward ANR can work. If a neighbor relationship with an intra-eNodeB cell is added to the NRT of a serving cell or the serving cell initiates a handover to the intra-eNodeB neighboring cell, the serving eNodeB adds the neighbor relationship with the serving cell to the NRT of the intra-eNodeB cell.

4.6 NCL/NRT Self-Management Based on X2 Messages When an X2 interface is set up or eNodeB configurations change, the local and peer eNodeBs exchange information through the X2 interface to update NCLs and NRTs. For details about the messages transmitted during X2 setups and eNodeB configuration updates, see section 8.3 "Global Procedures" in 3GPP TS 36.423 V10.0.0. NCL/NRT self-management based on X2 messages manages only the external cells and neighbor relationship for which the Control Mode parameter is set to AUTO_MODE(Auto Mode). For details about the Control Mode parameter, see 4.2.1 NCL/NRT Control Mode.

4.6.1 NCL/NRT Entry Addition and Update NCL Entry Addition Based on X2 Setup Messages

Figure 4-6 illustrates the signaling procedure of successful X2 setup. Figure 4-6 Signaling procedure of successful X2 setup

1. After receiving an X2 SETUP REQUEST message from eNodeB 1, eNodeB 2 adds all cells served by eNodeB 1 to the NCL of eNodeB 2 if the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected for eNodeB 2. 2. eNodeB 2 responds with an X2 SETUP RESPONSE message. After receiving this message, eNodeB 1 adds all cells served by eNodeB 2 to the NCL of eNodeB 1 if the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected for eNodeB 1. If the GlobalProcSwitch.X2ServedCellType parameter is set to CONFIGURED_CELL(Configured Cell), "all cells" include active and inactive cells. After being added to the NCL, inactive cells may be removed from the NCL by intra-RAT eventtriggered ANR. As a result, such an inactive cell will be added to the NCL and then removed from the NCL repeatedly. If the GlobalProcSwitch.X2ServedCellType parameter is set to ACTIVE_CELL(Active Cell), "all cells" refers to active cells. NCL/NRT Entry Addition and Update Based on eNodeB Configuration Update Messages

If a cell is added to the local eNodeB or the cell configuration (downlink EARFCN, PCI, ECGI, TAC, or PLMN list) of the local eNodeB changes, the local eNodeB sends an ENB CONFIGURATION UPDATE message to the peer eNodeB through the X2 interface to inform the peer eNodeB of the change. The peer eNodeB automatically adds the new cell to its NCL or updates the cell configuration in its NCL and NRT. Figure 4-7 illustrates the signaling procedure of eNodeB configuration update.

Figure 4-7 Signaling procedure of eNodeB configuration update

NOTE: If no cell under eNodeB 1 is active, eNodeB 1 cannot use X2 messages to inform eNodeB 2 of the eNodeB configuration update.

1. When a cell is added to or modified in eNodeB 1, eNodeB 1 sends an ENB CONFIGURATION UPDATE message to eNodeB 2. 2. eNodeB 2 performs one of the following operations: 

If the NCL of eNodeB 2 does not contain the cell and the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected for eNodeB 2, eNodeB 2 adds the cell to its NCL.



If the following conditions are met, eNodeB 2 updates the NCL and NRT entry with the new downlink EARFCN, PCI, ECGI, TAC, or PLMN list: -The NCL of eNodeB 2 contains the cell. -The Control Mode parameter for the NCL/NRT entry is set to AUTO_MODE(Auto Mode). -The MOD_NCELL_CFG_SW(MOD_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected for eNodeB 2.

3. In this scenario, an inactive cell under eNodeB 1 can be added to the NCL of eNodeB 2 if the GlobalProcSwitch.X2ServedCellType parameter is set to CONFIGURED_CELL(Configured Cell). However, the inactive cell in an NCL may be removed by intra-RAT event-triggered ANR. As a result, such an inactive cell will be added to the NCL and then removed from the NCL repeatedly. 4. 5.

NOTE: After receiving the ENB CONFIGURATION UPDATE message, eNodeB 2 adds the cell to its NCL or updates the cell in its NCL based on the message. During this operation, eNodeB 2 does not add or update the uplink EARFCN. The reason is that uplink EARFCNs can be calculated based on the configured downlink EARFCNs.

6. eNodeB 2 responds to eNodeB 1 with an ENB CONFIGURATION UPDATE ACKNOWLEDGE message. Before modifying eNodeB configuration data (such as parameters eNodeBFunction.eNodeBId, Cell.CellId, Cell.LocalCellId, Cell.PhyCellId, and Cell.DlEarfcn, and parameters in the MOs CnOperator, CnOperatorTa, and CellOp) using the CME, you are advised to deselect the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW) and MOD_NCELL_CFG_SW(MOD_NCELL_CFG_SW) options of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter. If one of the options is selected, the eNodeB may experience conflicts between modified configuration data delivered from the CME and the NCL/NRT update based on X2 messages, thereby causing configuration data loss or abnormality. Deselecting these options ensures that NCLs/NRTs will not be automatically updated based on X2 messages. Instead, NCL/NRT data is modified using the CME. Neighboring Frequency Addition Based on X2 Messages and eNodeB Configuration Update Messages

If the ADD_FREQ_CFG_SW(ADD_FREQ_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected, the local eNodeB can automatically synchronize neighboring frequencies of cells served by it with neighboring frequencies of cells served by the peer eNodeB using X2 messages. X2 messages include X2 SETUP REQUEST, X2 SETUP RESPONSE, and ENB CONFIGURATION UPDATE messages. When an eNodeB adds a neighboring frequency based on X2 messages, the FreqAddCtrl(FreqAddCtrl) option of the GlobalProcSwitch.X2BasedUptENodeBPolicy parameter controls whether the eNodeB filters frequencies based on the operator information. If this option is selected, the local eNodeB does not filter frequencies but directly configures the operating frequencies of cells served by the peer eNodeB as neighboring frequencies of the local cell. If this option is deselected, the local eNodeB filters frequencies. It checks whether the operator information of the local cell and that of cells served by the peer eNodeB are the same. The local eNodeB configures a frequency as a neighboring frequency only if the frequency has the same operator information as the local cell.

4.6.2 NCL/NRT Entry Removal If a cell under the local eNodeB is removed, the local eNodeB sends an ENB CONFIGURATION UPDATE message to the peer eNodeB through the X2 interface to inform the peer eNodeB of the change. The peer eNodeB automatically removes the cell from its NCL and removes the neighbor relationship with the cell from its NRT. NCL/NRT entry removal based on X2 messages is controlled by the DEL_NCELL_CFG_SW(DEL_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter. Figure 4-8 illustrates the signaling procedure of eNodeB configuration update.

Figure 4-8 Signaling procedure of eNodeB configuration update

NOTE: If no cell under eNodeB 1 is active, eNodeB 1 cannot use X2 messages to inform eNodeB 2 of the eNodeB configuration update.

1. When a cell under eNodeB 1 is removed, eNodeB 1 sends eNodeB 2 an ENB CONFIGURATION UPDATE message that contains the IE Served Cells To Delete. 2. Considering the ECGI in the IE Served Cells To Delete, eNodeB 2 performs one of the following operations: 

eNodeB 2 removes the external cell and the neighbor relationship if the following conditions are met: -The ECGI is included in both an NCL and an NRT of eNodeB 2. -The No remove indicator parameter is set to PERMIT_RMV_ENUM(Permit ANR Remove) for the neighbor relationship with the external cell identified by the ECGI. -The Control Mode parameter is set to AUTO_MODE(Auto Mode) for the external cell and neighbor relationship.



If the ECGI is included in the NCL but not any NRT of eNodeB 2, eNodeB 2 removes the external cell identified by the ECGI from the NCL.

3. eNodeB 2 responds to eNodeB 1 with an ENB CONFIGURATION UPDATE ACKNOWLEDGE message. It is recommended that the GlobalProcSwitch.X2ServedCellType parameter be set to CONFIGURED_CELL(Configured Cell) when the DEL_NCELL_CFG_SW(DEL_NCELL_CFG_SW) option of the GlobalProcSwitch.X2BasedUptNcellCfgSwitch parameter is selected. The reasons are as follows: 

If the GlobalProcSwitch.X2ServedCellType parameter is set to ACTIVE_CELL(Active Cell), eNodeB 1 sends eNodeB 2 an ENB CONFIGURATION UPDATE message carrying the IE Served Cells To Delete when the cells under eNodeB 1

are manually deactivated or the S1 interface is faulty. After receiving this message, eNodeB 2 incorrectly removes these cells from its NCL and NRTs. 

5

If the GlobalProcSwitch.X2ServedCellType parameter is set to CONFIGURED_CELL(Configured Cell), eNodeB 1 sends eNodeB 2 an ENB CONFIGURATION UPDATE message carrying the IE Served Cells To Delete only when the cells under eNodeB 1 are removed.

Inter-RAT ANR

This chapter describes LOFD-002002 Inter-RAT ANR.

5.1 Feature Description 5.1.1 LOFD-002002 Inter-RAT ANR Descriptions of the LOFD-002002 Inter-RAT ANR feature include the following: 

NCL or NRT



Inter-RAT event-triggered ANR



Inter-RAT fast ANR



Automatic optimization of neighbor relationship attributes

Intra- and inter-RAT ANR work in a similar way but differ in certain principles and parameters. NOTE: When the CPU usage of the main control board exceeds 80%, the eNodeB does not handle unknown CGIs. The handling of unknown CGIs includes adding and updating NCL and NRT entries. For details, see 5.3.1 Automatic Detection and Addition of Missing Neighboring Cells and 5.3.2 NCL Entry Modification.

5.2 Inter-RAT NCL and NRT 5.2.1 NCL/NRT Control Mode Table 5-1 lists the parameters that specify the control mode for external cells in NCLs and neighbor relationships in NRTs for inter-RAT ANR. For details, see 4.2.1 NCL/NRT Control Mode. Table 5-1 Control mode parameters NCL/NRT

External UTRAN cell

Parameter ID

UtranExternalCell.CtrlMode

NCL/NRT

Neighbor relationship with a UTRAN cell

Parameter ID

UtranNCell.CtrlMode

Blacklisted neighboring UtranBlkNCell.CtrlMode UTRAN cell External GERAN cell

GeranExternalCell.CtrlMode

Neighbor relationship with a GERAN cell

GeranNcell.CtrlMode

5.2.2 NRT Optimization Mode Optimization mode specifies whether a piece of NRT optimization advice can be automatically delivered or requires manual confirmation. The ANR.OptMode parameter specifies the delivery mode for advice generated by automatic optimization of blind handover priorities and BT optimization advice automatically generated for inter-RAT neighbor relationships. 

When this parameter is set to FREE(FREE), the optimization advice takes effect directly.



When this parameter is set to CONTROLLED(CONTROLLED), the ANR.OptModeStrategy parameter specifies whether the optimization advice for neighbor relationships with UTRAN and GERAN cells will be reported to the U2000, and operators determine whether to take the advice on the U2000. 

When the UtranCtrlOptMode(UTRANCtrlOptMode) or GeranCtrlOptMode(GERANCtrlOptMode) option of the ANR.OptModeStrategy parameter is selected, the optimization advice generated by automatic optimization of blind handover priorities for neighbor relationships with UTRAN and GERAN cells will be reported to the U2000. The optimization is subject to the manual confirmation on the U2000.



When the UtranCtrlOptMode(UTRANCtrlOptMode) option of the ANR.OptModeStrategy parameter is deselected, the BT optimization advice automatically generated by ANR for neighbor relationships with UTRAN cells will be reported to the U2000. The optimization is subject to the manual confirmation on the U2000.

NOTE: If operators do not deliver the optimization advice for a neighbor relationship but manually change the blind handover priority, the modification takes effect in the U2000 and the updated optimization advice is displayed on the U2000 client.

5.2.3 Parameters Related to NCL/NRT Management Neighbor relationship management of inter-RAT ANR takes effect on a per eNodeB, cell, or frequency basis, each controlled by eNodeB-, cell-, and frequency-specific ANR parameters.



eNodeB-specific parameters eNodeB-specific parameters must be set to implement inter-RAT ANR.



Cell-specific parameters If inter-RAT ANR is required for a cell served by an eNodeB with inter-RAT ANR enabled, the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the CellAlgoSwitch.AnrFunctionSwitch parameter must be selected for this cell.



Frequency-specific parameters ANR can be further enabled for neighboring cells on different frequencies of a cell. 

The GeranNfreqGroup.AnrInd parameter specifies whether to allow ANR management of external cells on frequencies in a neighboring GERAN frequency group and neighbor relationships with these cells.



The UtranNFreq.AnrInd parameter specifies whether to allow ANR management of external cells on a neighboring UTRAN frequency and neighbor relationships with these cells.

NOTE: NCLs are configured on a per eNodeB basis. An eNodeB adheres to the following rules when configuring NCLs:  

External cells are added to an NCL based on the frequency indicators of the source cells. External cells can be directly deleted from NCLs if each cell served by the eNodeB does not have neighbor relationships with the external cells.

5.3 Event-triggered ANR Inter-RAT event-triggered ANR includes detection of inter-RAT missing neighboring cells by using event-triggered UE measurements and automatic maintenance of inter-RAT NCLs and NRTs. Inter-RAT event-triggered ANR can be classified into event-triggered ANR with GERAN and event-triggered ANR with UTRAN. Event-triggered ANR with GERAN is controlled by the GeranEventAnrSwitch(GeranEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter. Event-triggered ANR with UTRAN is controlled by the UtranEventAnrSwitch(UtranEventAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter. Cell- and frequency-specific ANR indicators also specify whether event-triggered ANR with GERAN or UTRAN takes effect. For details, see 5.2.3 Parameters Related to NCL/NRT Management.

5.3.1 Automatic Detection and Addition of Missing Neighboring Cells 5.3.1.1 Automatic Detection of Missing Neighboring Cells Inter-RAT event-triggered ANR uses event-triggered UE measurements to detect missing neighboring cells.

Inter-RAT event-triggered ANR detects missing inter-RAT neighboring cells based on the cell lists in inter-RAT measurement reports. This type of ANR is triggered only by coverage-based handover measurements or inter-RAT MLB measurements. Table 5-2 lists types of handover measurements and related eNodeB-specific parameters. Table 5-2 Types of inter-RAT handover measurements and related eNodeB-specific parameters Handover Measurement Type

CoverageNone based handover measurements

Parameter for ANR with UTRAN

Parameter for ANR wit

None

MlbBasedEventAnrSwitch(MlbBasedEventAnrSwitch) MlbBasedEventAnrSwitch(MlbBa Inter-RAT option of the ENodeBAlgoSwitch.AnrSwitch parameter option of the ENodeBAlgoSwitch. MLB measurements

This section uses the procedure for detecting a missing neighboring UTRAN cell to illustrate how inter-RAT event-triggered ANR detects missing inter-RAT neighboring cells. Assume that a UE is served by cell A of the source eNodeB and that cell B is an adjacent UTRAN cell of cell A. Figure 5-1 illustrates how the eNodeB uses event-triggered UE measurements to detect cell B. Figure 5-1 Procedure for using event-triggered UE measurements to detect a missing inter-RAT neighboring cell

1. The source eNodeB delivers the inter-RAT measurement configuration to the UE, sets up measurement gaps, and instructs the UE to measure the specified UTRAN frequencies and cells. 2. The UE detects that cell B meets the measurement requirements, so the UE reports the scrambling code of cell B to cell A. 3. The source eNodeB checks whether its UTRAN NCL includes the scrambling code of cell B. 

If the NCL includes the scrambling code, the ANR procedure ends.



If the NCL does not include the scrambling code, cell B is a missing inter-RAT neighboring cell of cell A. The procedure continues.

4. The source eNodeB instructs the UE to read the CGI, location area code (LAC), and routing area code (RAC) of cell B. 5. The UE reports the CGI, LAC, and RAC of cell B to the source eNodeB. After detecting the missing neighboring cell, the source eNodeB adds and updates the entries in the NCL or NRT. For details, see 5.3.1.2 Automatic Addition of Missing Neighboring Cells. According to 3GPP specifications, UEs cannot report missing neighboring UTRAN cells by sending B1- or B2-related measurement reports to eNodeBs. Instead, eNodeBs use SONdedicated measurements (with purpose set to ReportStrongestCellsForSON) to instruct UEs to report missing neighboring UTRAN cells. According to 3GPP TS 36.331 of versions earlier than V10.12.0, if the eNodeB delivers the ANR-related measurement configuration of a UTRAN frequency where 32 cells operate, certain UEs cannot send measurement reports of the UTRAN frequency for ANR. However, 3GPP TS 36.331 V10.12.0 and later versions have been modified. In the measurement configuration for ANR, the maximum number of adjacent cells is equal to the protocol-defined value minus one. McUtranNcellNumOptSwtich(McUtranNcellNumOptSwtich) option of the ENodeBAlgoSwitch.HoSignalingOptSwitch parameter controls whether the modification takes effect. If this option is selected, the modification takes effect. If this option deselected, this modification does not take effect. UEs can report missing neighboring GERAN cells by sending B1- or B2-related measurement reports to eNodeBs. According to 3GPP TS 36.331 V11.6.0, if the eNodeB includes the IE cellForWhichToReportCGI in the measurement configuration, the IE MeasObjectGERAN includes only one GERAN ARFCN. In versions earlier than V11.6.0, the IE MeasObjectGERAN can include multiple GERAN ARFCNs. If the IE includes multiple GERAN ARFCNs, some UEs may not report CGIs. To address this, the number of GERAN ARFCNs that can be included is modified in the 3GPP specifications. The GeranAnrMcOptSwitch(GeranAnrMcOptSwitch) option of the GlobalProcSwitch.ProtocolMsgOptSwitch parameter controls whether the modification takes effect. If the option is selected, the modification takes effect. If the option deselected, the modification does not take effect. The lengths of time that UEs perform CGI reading for event-triggered ANR with UTRAN and GERAN are specified by the ANR.UtranEventAnrCgiTimer and

ANR.GeranEventAnrCgiTimer parameters, respectively. If a UE fails to read the CGI of an adjacent cell within the lengths of time, the eNodeB removes the measurement configuration related to CGI reading.

5.3.1.2 Automatic Addition of Missing Neighboring Cells If event-triggered ANR with UTRAN or GERAN detects a missing neighboring cell, the eNodeB considers the ANR.UtranEventAnrMode or ANR.GeranEventAnrMode parameter setting when adding the detected cell to an NCL and adding the neighbor relationship with the detected cell to an NRT of the source cell. The principle is the same as that for intra-RAT event-triggered ANR.

5.3.2 NCL Entry Modification After a UE reports the CGI of a missing neighboring cell to an eNodeB, the eNodeB checks whether the reported information about the detected cell is consistent with the external cell information in the NCL. If the reported information is inconsistent with the external cell information, the eNodeB automatically synchronizes the NCL with the reported information. The reported information varies with RATs. 

For a neighboring UTRAN cell, the information includes the downlink UARFCN, scrambling code, LAC, RAC, PLMN list, and secondary frequency band.



For a neighboring GERAN cell, the information includes the BSIC, RAC, ARFCN, and band indicator.

5.3.3 NCL/NRT Entry Removal The NCL/NRT entry removal function takes effect only after event-triggered ANR is enabled. Table 5-3 lists the parameters controlling the automatic removal functions. Table 5-3 Parameters controlling the automatic removal functions Function

Priority-based Removal

Removal of Inappropriate Neigh

UtranAutoNrtDeleteSwitch(UtranAutoNrtDeleteSwitch) Interoption of the ENodeBAlgoSwitch.AnrSwitch parameter RAT ANR with UTRAN



GeranAutoNrtDeleteSwitch(GeranAutoNrtDeleteSwitch) Interoption of the ENodeBAlgoSwitch.AnrSwitch parameter RAT ANR with GERAN







UtranAutoNrtDeleteSwitch(Utran option of the ENodeBAlgoSwitch. UTRAN_DELERRORNCELL(UTR option of the ANR.NrtDelMode pa

GeranAutoNrtDeleteSwitch(Gera option of the ENodeBAlgoSwitch. GERAN_DELERRORNCELL(GER option of the ANR.NrtDelMode pa

5.3.3.1 Removal of Neighbor Relationships from an NRT Removal of NCL/NRT entries by inter-RAT ANR is similar to that by intra-RAT ANR. This section only describes the differences.

Priority-based Removal

If event-triggered ANR with UTRAN, GERAN, or CDMA2000 is enabled, a measurement period specified by the ANR.StaPeriodForIRatNRTDel parameter starts. A neighbor relationship can be removed only when the number of handovers from the local cell to all neighboring cells of a RAT is greater than or equal to the ANR.StaNumForIRatNRTDel parameter value within a measurement period. Other processing is the same as priority-based removal in intra-RAT event-triggered ANR. Removal of Inappropriate Neighbor Relationships

After the UtranAutoNrtDeleteSwitch(UtranAutoNrtDeleteSwitch) or GeranAutoNrtDeleteSwitch(GeranAutoNrtDeleteSwitch) option is selected, event-triggered ANR with GERAN or UTRAN also requires that the GERAN_DELERRORNCELL(GERAN_DELERRORNCELL) or UTRAN_DELERRORNCELL(UTRAN_DELERRORNCELL) option of the ANR.NrtDelMode(LTE FDD eNodeB,LTE TDD eNodeB) parameter be selected. If the number of handovers from each cell served by the local eNodeB to a neighboring cell is greater than or equal to the value of the ANR.NcellHoStatNum parameter and the handover success rate is all less than or equal to the value of the ANR.DelCellThd parameter within a measurement period specified by the ANR.StatisticPeriod parameter, the eNodeB removes the neighboring cell from the NRT and the NCL. Removal of Redundant UTRAN or GERAN Neighbor Relationships

A neighbor relationship is redundant if the following conditions are met within each of ANR.StatPeriodCoeff consecutive measurement periods defined by the ANR.StaPeriodForIRatNRTDel parameter: 

The total number of handovers from the local cell to all its neighboring cells of a RAT is greater than or equal to the ANR.StaNumForIRatNRTDel parameter value.



The number of handovers from the local cell to this neighboring cell is 0.



This neighboring cell has never been included in any measurement report.



At least one neighboring cell on the frequency of this neighboring cell is included in a measurement report.

Punishment Mechanism of Removed Neighbor Relationships

When a neighbor relationship with a UTRAN cell is automatically removed by ANR, the punishment mechanism of removed neighbor relationships can prevent this neighbor relationship from being added back to the NRT within a short period. The punishment mechanism is the same as that of removed neighbor relationships with E-UTRAN cells. If the number of times a neighbor relationship is required to be added to the NRT is greater than or equal to the ANR.UtranNcellDelPunNum parameter value, the eNodeB re-adds the neighbor relationship to the NRT. Otherwise, the eNodeB does not re-add the neighbor relationship to the NRT.

5.3.3.2 Removal of External Cells from an NCL

After the inter-RAT event-triggered ANR with UTRAN or GERAN and neighbor relationship removal functions are enabled, a measurement period specified by the ANR.StaPeriodForIRatNRTDel parameter starts. At the end of four consecutive measurement periods (each specified by the ANR.StaPeriodForIRatNRTDel parameter), the eNodeB removes the external cell that has no neighbor relationships with any of the cells served by the local eNodeB.

5.4 Fast ANR Inter-RAT fast ANR is also known as inter-RAT periodic ANR. It detects missing inter-RAT neighboring cells based on periodic UE measurement reports and adds the missing neighboring cells. Fast ANR with UTRAN or GERAN is controlled by the UtranFastAnrSwitch(UtranFastAnrSwitch) or GeranFastAnrSwitch(GeranFastAnrSwitch) option of the ENodeBAlgoSwitch.AnrSwitch parameter, and cell- and frequency-specific ANR indicators. For details, see 5.2.3 Parameters Related to NCL/NRT Management.

5.4.1 Automatic Detection and Addition of Missing Neighboring Cells 5.4.1.1 Automatic Detection of Missing Neighboring Cells Automatic detection of missing neighboring cells by inter-RAT ANR is similar to that by intraRAT ANR. This section only describes the differences. For details about the similarities, see 4.4.1 Automatic Detection and Addition of Missing Neighboring Cells. The eNodeB selects a number of UEs to simultaneously perform fast ANR measurements within a fast ANR check period. The maximum number of UEs is specified by the ANR.FastAnrInterRatMeasUeNum parameter. The following table lists the signal quality thresholds for the UTRAN and GERAN. RAT

Signal Quality Threshold

UTRAN

Received signal code power (RSCP) threshold, specified by the ANR.FastAnrRscpThd parameter

GERAN

Received signal strength indicator (RSSI) threshold, specified by the ANR.FastAnrRssiThd parameter

If fast ANR with GERAN is enabled, it is recommended that the ANR.FastAnrRprtAmount parameter not be set to r1(1). This is because a UE may report only the serving cell information in the first measurement report during intra-RAT fast ANR and fast ANR with GERAN. According to section 5.5.4.1 "General" in 3GPP TS 36.331 V10.1.0, if purpose is set to reportStrongestCells, the UE initiates a first measurement report immediately after the quantity to be reported becomes available for at least either all serving cells or one of the applicable cells. Therefore, this IE might include the information only about the serving cell. A measurement report can contain multiple adjacent GERAN cells.

For fast ANR with UTRAN, the eNodeB sets purpose to reportStrongestCellsForSON for fast ANR measurements. According to section 6.3.5 "Measurement information elements" of 3GPP TS 36.331 V10.1.0, when purpose is set to reportStrongestCellsForSON, reportAmount takes the only value 1, which means that the UE sends only one measurement report to the eNodeB when the reporting condition is met. In this case, the user-defined reporting interval does not take effect. For the UEs to send periodic measurement reports, the fast ANR algorithm reconfigures measurement IEs with purpose set to reportStrongestCellsForSON for the UEs at a fixed interval of 5s. A measurement report contains only one UTRAN cell. Based on check results in a fast ANR check period, the eNodeB performs the following: 

If an unknown cell is reported, the eNodeB sets the number of UEs that have performed measurements in the check period to 0 and then selects a number of UEs specified by the ANR.FastAnrInterRatMeasUeNum parameter to perform measurements. If the UEs report multiple adjacent GERAN cells, the eNodeB instructs the UEs to read the CGI of only the first cell. Then, the eNodeB adds the detected cell to an NCL and NRT. For details about the policies for adding the cell to the NCL and NRT, see 5.4.1.2 Automatic Addition of Missing Neighboring Cells.



If no unknown cell is reported, the check period ends. The eNodeB checks the total number of UEs that have performed measurements. If the total number is less than the ANR.FastAnrInterRatUeNumThd parameter value, the eNodeB starts the next round of fast ANR measurements. If the total number is greater than or equal to the ANR.FastAnrInterRatUeNumThd parameter value, the eNodeB enters the monitoring state. In this state, the eNodeB does not select UEs for fast ANR measurements but monitors whether event-triggered ANR measurement reports contain the scrambling code or BSIC of an unknown cell. The eNodeB stays in the monitoring state until it receives a measurement report that contains the scrambling code or BSIC of an unknown cell. When the eNodeB exits the monitoring state, it starts fast ANR measurements again.

5.4.1.2 Automatic Addition of Missing Neighboring Cells When fast ANR detects a missing neighboring cell, the eNodeB adds this neighboring cell to the NCL and the neighbor relationship with this cell to the NRT. 

Fast ANR with GERAN 

When the ANR.FastAnrMode parameter is set to NCL_NRT_MODE(NCL and NRT Mode), the eNodeB adds the strongest missing neighboring GERAN cell to the NCL and the neighbor relationship with this cell to the NRT. The eNodeB also adds the second strongest missing neighboring GERAN cell to the NCL.



When the ANR.FastAnrMode parameter is set to NCL_MODE(NCL Mode), the eNodeB adds the strongest and second strongest missing neighboring GERAN cells to the NCL.



When the ANR.FastAnrMode parameter is set to NRT_MODE(NRT_MODE), the eNodeB instructs the UE to read the CGIs of the strongest and second strongest missing neighboring GERAN cells. The eNodeB adds these neighboring cells to the

NCL and the neighbor relationships with these cells to the NRT based on the CGI reading results instead of the information in the NCL. 

Fast ANR with UTRAN 

When the ANR.FastAnrMode parameter is set to NCL_NRT_MODE(NCL and NRT Mode), the eNodeB adds the strongest missing neighboring UTRAN cell to the NCL and the neighbor relationship with this cell to the NRT.



When the ANR.FastAnrMode parameter is set to NCL_MODE(NCL Mode), the eNodeB adds the strongest missing neighboring UTRAN cell to the NCL.



When the ANR.FastAnrMode parameter is set to NRT_MODE(NRT_MODE), the eNodeB instructs the UE to read the CGI of the strongest missing neighboring UTRAN cell. The eNodeB adds the neighboring cell to the NCL and the neighbor relationship with this cell to the NRT based on the CGI reading results instead of the information in the NCL.

5.4.2 NCL Entry Modification For details, see 4.4.2 Modifying an NCL Entry.

5.5 Automatic Optimization of Neighbor Relationship Attributes ANR automatically optimizes certain attributes of inter-RAT neighbor relationships based on inter-RAT handover statistics.

5.5.1 Automatic Optimization of Blind Handover Priorities 5.5.1.1 Overview ANR optimizes the Blind handover priority parameter for neighbor relationships with UTRAN and GERAN cells based on inter-RAT handover statistics. NOTE: For details about the definitions and usage of the blind handover priorities, see Inter-RAT Mobility Management in Connected Mode Feature Parameter Description.

This automatic optimization function includes the following: 

ANR automatically identifies the neighboring UTRAN or GERAN cells that cover EUTRAN cells and changes the blind handover priority for the neighbor relationships with these UTRAN or GERAN cells from 0 to 1. Figure 5-2 shows an example, in which the coverage area of a UTRAN or GERAN cell includes that of an E-UTRAN cell. In this example, the UTRAN or GERAN cell can be configured as the target cell for blind handovers from the E-UTRAN cell. Therefore, ANR sets the blind handover priority to 1 for the neighbor relationship of the E-UTRAN cell with the UTRAN or GERAN cell.



After the network topology changes, the existing blind handover priorities may become inappropriate, causing network performance deterioration. For example, the blind handover

success rate is low. In this case, ANR automatically changes the blind handover priorities from a non-zero value to 0. Figure 5-2 E-UTRAN cell in UTRAN/GERAN coverage

Automatic optimization of blind handover priorities for neighbor relationships with UTRAN or GERAN cells is activated if the UtranBlindNcellOptSwitch(UtranBlindNcellOptSwitch) or GeranBlindNcellOptSwitch(GeranBlindNcellOptSwitch) option, respectively, of the ENodeBAlgoSwitch.BlindNcellOptSwitch parameter is selected. The optimization advice can be automatically delivered or requires manual confirmation. For details, see 5.2.2 NRT Optimization Mode.

5.5.1.2 Inter-RAT Handover Statistics Collection After this automatic optimization function is enabled, a measurement period specified by the BLINDNCELLOPT.StatisticPeriod parameter starts. Within the measurement period, the eNodeB collects the performance counters related to inter-RAT handovers to UTRAN or GERAN. The values of these performance counters are used as an input to generate optimization advice. The collection procedure is as follows: 1. Within a measurement period, the eNodeB counts the following data: 

Number of measurement-based handovers for CSFB from the source E-UTRAN cell to each individual UTRAN frequency and to each individual GERAN carrier frequency group



Number of measurement-based handovers for CSFB from the source E-UTRAN cell to each individual neighboring UTRAN or GERAN cell



Number of blind handover attempts from the source E-UTRAN cell to each individual neighboring UTRAN or GERAN cell and number of successful blind handovers among these attempts



Number of measurement-based handover attempts from the source E-UTRAN cell to each individual neighboring UTRAN or GERAN cell and number of successful handovers among these attempts

2. At the end of the measurement period, the eNodeB calculates the following data based on the preceding measurement values:



Proportion of the number of measurement-based handovers for CSFB from the source E-UTRAN cell to each individual neighboring UTRAN or GERAN cell to the number of such handovers from the source E-UTRAN cell to the operating UTRAN frequency or GERAN carrier frequency group of the neighboring cell, respectively



Success rate of measurement-based handovers from the source E-UTRAN cell to each individual neighboring UTRAN or GERAN cell



Success rate of blind handovers from the source E-UTRAN cell to each individual neighboring UTRAN or GERAN cell NOTE: All the preceding data is measured on a per cell basis. The data is not operator-specific in RAN sharing scenarios.

5.5.1.3 Generation of Optimization Advice for Blind Handover Priorities Changing the Priority from 0 to 1

ANR changes the blind handover priority from 0 to 1 for a neighboring UTRAN or GERAN cell that meets all the following conditions: 

The UtranNFreq.ContinuCoverageIndication or GeranNfreqGroup.ContinuCoverageIndication parameter is set to CONTINUOUS(CONTINUOUS).



Within the current measurement period, the number of measurement-based handovers for CSFB from the source E-UTRAN cell to the operating UTRAN frequency or GERAN carrier frequency group of the neighboring cell is greater than the BlindNcellOpt.SampleNumThd parameter value.



Within the current measurement period, the proportion of the number of handovers for CSFB from the source E-UTRAN cell to the neighboring cell in the number of measurement-based handovers from the source E-UTRAN cell to the operating UTRAN frequency or GERAN carrier frequency group of the neighboring cell is greater than or equal to the BlindNcellOpt.CsfbHoAttempRatioThd parameter value.



Within the current measurement period, the success rate of measurement-based handovers from the source E-UTRAN cell to the neighboring cell is greater than or equal to the BlindNcellOpt.HoSuccRateThd parameter value.

Changing the Priority from a Non-zero Value to 0

ANR changes the blind handover priority from a non-zero value to 0 for a neighboring UTRAN or GERAN cell that meets both of the following conditions: 

The number of blind handover attempts from the source E-UTRAN cell to the neighboring cell is greater than the BlindNcellOpt.SampleNumThd parameter value.



The success rate of blind handovers from the source E-UTRAN cell to the neighboring cell is less than or equal to the BlindNcellOpt.BlindHoSuccRateThd parameter value.

5.5.2 Automatic Optimization of Measurement Priorities ANR optimizes the UtranNCell.NCellMeasPriority and GeranNcell.NCellMeasPriority parameters for neighbor relationships with UTRAN and GERAN cells based on inter-RAT neighboring cell measurement statistics, respectively. A larger parameter value indicates a higher measurement priority. NOTE: For details about the definitions and usage of the measurement priorities for neighbor relationships with UTRAN and GERAN cells, see Inter-RAT Mobility Management in Connected Mode Feature Parameter Description and CS Fallback Feature Parameter Description.

Automatic optimization of measurement priorities for neighbor relationships with UTRAN and GERAN cells is activated if the UTRAN_SWITCH(UTRAN Neighboring Cell Ranking Switch) and GERAN_SWITCH(GREAN Neighboring Cell Ranking Switch) options of the ENodeBAlgoSwitch.NCellRankingSwitch parameter are selected, respectively. After this automatic optimization function is enabled, a measurement period specified by the ANR.PeriodForNCellRanking parameter starts. 1. Within the measurement period, the eNodeB counts the number of times each neighboring UTRAN or GERAN cell is contained in handover measurement reports. 2. At the end of the period, the eNodeB optimizes the measurement priorities for the neighbor relationships with UTRAN or GERAN cells based on the statistics.

6



If a neighboring cell is not contained in any measurement report, the eNodeB sets the measurement priority for the neighbor relationship with this cell to 0.



For neighboring cells contained in at least one measurement report, the eNodeB sorts these neighboring cells by the number of times a neighboring cell is contained in the measurement reports in ascending order. If some cells are contained in the measurement reports for the same number of times, the eNodeB sorts them randomly. Then, the eNodeB sets the priorities for the neighbor relationships with the neighboring cells at the Nth place to N.

Neighbor Relationship Classification

This section describes LOFD-081225 Neighbor Cell Classification Management. This function classifies neighbor relationships based on the handover statistics and manages neighbor relationships based on the classification, improving the OM experience.

6.1 Feature Description 6.1.1 LOFD-081225 Neighbor Cell Classification Management This feature classifies neighbor relationships based on the related statistics and applies different management policies. Neighbor relationship classification applies to intra-RAT and inter-RAT neighbor relationships. The eNodeB performs differentiated handling on different types of E-UTRAN neighbor relationships.

6.2 Intra-RAT Neighbor Relationship Classification 6.2.1 Neighbor Relationship Classification Intra-RAT neighbor relationship classification is controlled by the INTRA_RAT_NCELL_CLASS_SW(INTRA_RAT_NCELL_CLASS_SW) option of the CellAlgoSwitch.NCellClassMgtSw parameter. This function requires that event-triggered ANR or fast ANR be enabled. Intra-RAT neighbor relationships can be formal neighbor relationships or extended neighbor relationships, as shown in Table 6-1. When ANR is enabled, the source cell starts a measurement period specified by the NCellClassMgt.StatPeriodForNCellClass parameter. Table 6-1 Formal and extended neighbor relationships Neighbor Relationship Type

Required Condition

Formal If either of the following conditions are neighbor met within a measurement period, the relationship eNodeB set the EutranIntraFreqNCell.NCellClassLabel and EutranInterFreqNCell.NCellClassLabel parameters to FORMAL(FORMAL) for intra-frequency and inter-frequency neighbor relationships, respectively:  The number of handover attempts from the local cell to a neighboring cell is greater than or equal to the NCellClassMgt.HoAttemptThd parameter value, and the number of successful handovers is greater than or equal to the NCellClassMgt.HoSuccThd parameter value.  The number of times the neighboring cell is successfully configured as an SCell for CA UEs

Description

In the following scenarios, the Neighbor Cell Classification Label parameter is automatically set to FORMAL(FORMAL) and this parameter cannot be automatically set to EXTENDED(EXTENDED) for a neighbor relationship:  The EutranIntraFreqNCell .AttachCellSwitch parameter is set to ON(On) for intra-RAT intra-frequency neighbor relationships.  Any of the following conditions is met for intra-RAT inter-frequency neighbor relationships:  The EutranInterFreqNCell.BlindHoPriority parameter is set to a non-zero value.  The EutranInterFreqNCell.OverlapInd parameter is set to YES(YES).

Neighbor Relationship Type

Required Condition

Description



is greater than or equal to the NCellClassMgt.CaSCellCfgThd parameter value. 

The CaGroupSCellCfg.SCellBlindCfgFlag parameter is set to TRUE(TRUE). The Control Mode parameter is set to MANUAL_MODE(Manual Mode).

Extended If both of the following conditions are None neighbor met within four consecutive relationship measurement periods, the eNodeB set the EutranIntraFreqNCell.NCellClassLabel and EutranInterFreqNCell.NCellClassLabel parameters to EXTENDED(EXTENDED) for intra-frequency and inter-frequency neighbor relationships, respectively:  The number of handover attempts from the local cell to a neighboring cell is less than the NCellClassMgt.HoAttemptThd parameter value, or the number of successful handovers is less than the NCellClassMgt.HoSuccThd parameter value.  The number of times the neighboring cell is successfully configured as an SCell for CA UEs is less than the NCellClassMgt.CaSCellCfgThd parameter value.

Extended neighbor relationships can be stored in the configuration database or eNodeB memory. The storage place can be changed, as shown in Table 6-2. Table 6-2 Storage of extended neighbor relationships Storage Place

Required Condition

Configuration Either of the following conditions is met: database  The NCellClassMgt.IntraRatNcellMgtMode parameter is set to CONFIGURATION_MODE(ConfigMode).  The No remove indicator parameter is set to FORBID_RMV_ENUM(Forbid ANR Remove).

Change of Storage P

When the value of the NCellClassMgt.IntraR changed from CONFIGURATION_MODE(Co INTERNAL_STORAGE_MODE(StorageMod relationships in the configuration database wil memory at the end of a measurement period s NCellClassMgt.StatPeriodForNCellClass pa

Storage Place

eNodeB memory

Required Condition

Change of Storage P

The NCellClassMgt.IntraRatNcellMgtMode The eNodeB moves the extended neighbor re the configuration database when the CellAlgo parameter is set to INTERNAL_STORAGE_MODE(StorageMode). parameter is set to EXTENDED_NCELL_MNG_SW(EXTENDED of the following conditions are met:  The value of the NCellClassMgt.IntraRa changed from INTERNAL_STORAGE_M CONFIGURATION_MODE(ConfigMode  The ANR.OptMode parameter is set to CONTROLLED(CONTROLLED), and th of the ANR.OptModeStrategy paramete  The IntraRatEventAnrSwitch(IntraRatE IntraRatFastAnrSwitch(IntraRatFastAn ENodeBAlgoSwitch.AnrSwitch parame  The INTRA_RAT_NCELL_CLASS_SW(INTR option of the CellAlgoSwitch.NCellClas deselected.  The INTRA_RAT_ANR_SW(INTRA_RA CellAlgoSwitch.AnrFunctionSwitch pa  The corresponding frequency-specific AN NOT_ALLOWED(NOT_ALLOWED).

NOTE: The value range of the NCellClassMgt.StatPeriodForNCellClass parameter is 1 to 50400. Set this parameter based on the traffic fluctuation of the network. If the traffic volume of the local cell fluctuates greatly, set this parameter to a large value, for example, 10080. If the traffic volume of the local cell does not fluctuate greatly, the default value (for example, 1440) is recommended. If the NRT optimization mode works in controlled mode, the unknown neighbor relationships to be added or removed will be reported to the U2000 for manual confirmation. In this case, intra-RAT neighbor relationship classification will not be performed. In other words, when the ANR.OptMode parameter is set to CONTROLLED(CONTROLLED) and the EutranCtrlOptMode(EutranCtrlOptMode) option of the ANR.OptModeStrategy parameter is selected, intra-RAT neighbor relationship classification does not take effect. Moving extended neighbor relationships from the memory to the configuration database prevents neighbor relationship loss and consequent KPI fluctuations after an upgrade. This operation will increase CPU usage and system load within a short period of time. You are advised to perform this operation during off-peak hours. This function provides best effort protection. If CPU flow control is implemented or the number of neighbor relationships in the configuration database has reached its maximum, the eNodeB directly removes the excessive extended neighbor relationships.

6.2.2 Blacklisted Neighbor Relationship Management This function manages blacklisted formal and extended neighbor relationships. For formal neighbor relationships, this function manages the E-UTRAN neighbor relationship blacklist (specified by the EutranBlkNCell MO). For extended neighbor relationships, this function manages the over distance flags and handover forbidden indicators.

Table 6-3 Blacklisted neighbor relationship management Function

Blacklisted neighbor relationship management

Application Scenario

Intra-RAT eventtriggered ANR or fast ANR

Prerequisite 



Parameter

INTRA_RAT_OVERDISTANCE_SW(INTRA_RAT_OVERDISTA The intraoption of the CellAlgoSwitch.AnrAlgoSwitch parameter RAT neighbor relationship classification function is enabled. The intraRAT neighbor relationship classification function is in internal storage mode.

Topology-based Management

This function performs topology check for neighbor relationships reported to the U2000 and handles them accordingly within a measurement period specified by the NCellClassMgt.StatPeriodForNCellClass parameter. If the check result meets all specified conditions, the eNodeB adds formal neighbor relationships to the neighboring E-UTRAN cell blacklist (specified by the EutranBlkNCell MO) or set the Over Distance Flag parameter to BOOLEAN_TRUE(True) and the No handover indicator parameter to FORBID_HO_ENUM(Forbid Ho) for extended neighbor relationships. If the check result does not meet all specified conditions, the eNodeB removes formal neighbor relationships from the neighboring E-UTRAN cell blacklist (specified by the EutranBlkNCell MO) or set the Over Distance Flag parameter to BOOLEAN_FALSE(False) for extended neighbor relationships. 

The conditions for neighbor relationships without any special indicators are as follows: 

The blind-handover priority is set to 0.



The Overlap Indicator parameter is set to NO(NO).



The Control Mode parameter is set to AUTO_MODE(Auto Mode).



The No remove indicator parameter is set to PERMIT_RMV_ENUM(Permit ANR Remove).



The Attach Cell Switch parameter is set to OFF(Off).



This neighboring cell is not one of the neighboring cells of a single frequency network (SFN) cell specified by the SfnEdgeRruRelation MO.



The CaGroupSCellCfg.SCellBlindCfgFlag parameter is set to FALSE(FALSE) or this neighboring cell is not a candidate SCell specified by the CaGroupSCellCfg MO.



The number of handover attempts is less than the value of the NCellParaCfg.HoStatThd parameter or the handover success rate is less than the value of the NCellParaCfg.HoSuccThd parameter within each of four consecutive measurement periods specified by the NCellClassMgt.StatPeriodForNCellClass parameter.



The U2000 obtains the latitude and longitude information from the eNodeB configurations or the engineering parameters on the CME. Then, the U2000 calculates the distances between the serving cell and its neighboring cell to determine whether the neighboring cell is an over-distant neighboring cell. 

When the NCellParaCfg.NCellOdDisThd parameter is set to a non-zero value (a value twice greater than the Cell.CellRadius parameter value is recommended), the U2000 determines that a neighboring cell is over-distant if the distance between the serving cell and the neighboring cell is greater than this threshold.



When the NCellParaCfg.NCellOdDisThd parameter is set to 0, the U2000 determines that a neighboring cell is over-distant if the distance between the serving cell and the neighboring cell is greater than the sum of the access radii of the two cells. The eNodeB can detect over-distant neighboring cells served only by Huawei eNodeBs.

Statistics-based Management

This function calculates the number of times a neighboring cell is included in a measurement report for all neighbor relationships (including blacklisted neighbor relationships). At the end of a measurement period specified by the NCellClassMgt.StatPeriodForNCellClass parameter, the eNodeB adds neighbor relationships that meet the following conditions to the neighboring EUTRAN cell blacklist (specified by the EutranBlkNCell MO): 

The neighbor relationship is an extended neighbor relationship.



The Neighbor Cell Plmn Label parameter is set to GREY(GREY).



PCI confusion occurs.



The number of CGI reading times is greater than the NCellClassMgt.HoAttemptThd parameter value.

The eNodeB removes a neighbor relationship from the neighboring E-UTRAN cell blacklist or clears the over distance flag of a neighbor relationship if the neighbor relationship meets the following conditions: 

The measurement decrease rate is greater than 80% or the neighboring cell is never included in any measurement reports within each of four consecutive measurement periods. The decrease rate is calculated using the following formula: (A-B)/A where, A denotes the maximum number of times the neighboring cell is included in measurement reports with any previous period.

B denotes the number of times the neighboring cell is included in measurement reports in the current measurement period. 

The Control Mode for blacklisted neighbor relationships is set to AUTO_MODE(Auto Mode). NOTE:







The calculation of the access radius is based on the parameters Cell.CellRadius, Cell.HighSpeedFlag, and Cell.PreambleFmt. For details, see descriptions about the random access procedure in 3GPP TS 36.211 V12.0.0. The topology-based blacklisted neighbor relationship management function checks each neighboring cell only once to prevent frequent invalid queries. If engineering parameters or thresholds of a cell is changed, you are advised to restart the blacklisted neighbor relationship management function. If a multi-RRU cell or SFN cell has multiple latitudes and longitudes, the minimum distance is used for determination.

Detection of New Neighboring Cells Whose PCI Is the Same as That of an Over-distant Neighboring Cell

The eNodeB instructs the UE to perform CGI reading if the neighboring cell included in the EUTRAN handover measurement report has a same PCI as that of an over-distant neighboring cell. The neighboring cell must meet either of the following conditions: 

The No handover indicator parameter for the extended neighbor relationships with this neighboring cell is set to FORBID_HO_ENUM(Forbid Ho).



The Neighbor Cell Plmn Label parameter for the extended neighbor relationships with this neighboring cell is set to GREY(GREY),

If a new neighboring cell is detected, the eNodeB adds the detected cell to the NCL and the neighboring relationship with this cell to the NRT. This function takes effect only when ANR.StartTime < System time ≤ ANR.StopTime.

6.2.3 Differentiated Handling An eNodeB performs differentiated handling on different types of neighbor relationships. The differentiation handling includes the following functions. Target Cell Selection for Handovers

This function requires that event-triggered ANR is enabled and is controlled by the NCELL_CLASS_HO_POLICY_SW(NCELL_CLASS_HO_POLICY_SW) option of the CellAlgoSwitch.NCellClassMgtSw parameter. If this option is selected, the eNodeB performs differential handling as follows during target cell selection for handovers: 

If the Neighbor Cell Classification Label parameter value is FORMAL(FORMAL) for the neighboring cell contained in the measurement report, the eNodeB selects the target cell using the NRTs.



If the Neighbor Cell Classification Label parameter value is EXTENDED(EXTENDED) for the neighboring cell contained in the measurement report, the eNodeB instructs the UE to perform CGI reading. Based on the CGI reading results, the eNodeB determines the target cell.

If this option is deselected, the eNodeB does not instruct the UE to perform CGI reading for extended neighbor relationships before a handover. Instead, the normal target cell selection procedure is adopted for both formal and extended neighbor relationships. PCI Confusion Detection

The function of PCI conflict alarm reporting is activated only if the ENodeBAlgoSwitch.PciConflictAlmSwitch parameter is set to ON(On) and the CONFUSION_DETECT_SWITCH(CONFUSION_DETECT_SWITCH) option of the ENodeBAlgoSwitch.PciConflictDetectSwitch parameter is selected. The function of differentiated handling on neighbor relationships in PCI confusion detection is controlled by the NCELL_CLASS_PCI_CONFLICT_SW(NCELL_CLASS_PCI_CONFLICT_SW) option of the CellAlgoSwitch.NCellClassMgtSw parameter. 



When the NCellClassMgt.IntraRatNcellMgtMode parameter is set to CONFIGURATION_MODE(ConfigMode): 

When the NCELL_CLASS_PCI_CONFLICT_SW(NCELL_CLASS_PCI_CONFLICT_SW ) option is selected, the eNodeB performs PCI confusion detection only for neighbor relationships whose Neighbor Cell Classification Label parameter value is FORMAL(FORMAL) in the NRT and blacklisted neighbor relationships.



When the NCELL_CLASS_PCI_CONFLICT_SW(NCELL_CLASS_PCI_CONFLICT_SW ) option is deselected, the eNodeB performs PCI confusion detection for all neighbor relationships in the NRT and blacklisted neighbor relationships.

When the NCellClassMgt.IntraRatNcellMgtMode parameter is set to INTERNAL_STORAGE_MODE(StorageMode), the eNodeB performs PCI confusion detection only for neighbor relationships whose Neighbor Cell Classification Label parameter value is FORMAL(FORMAL) in the NRT and blacklisted neighbor relationships.

For details about the definitions and principles of PCI confusion, see PCI Conflict Detection and Self-Optimization Feature Parameter Description. Neighbor Relationship Removal in PCI Confusion Scenarios

This function automatically takes effect when event-triggered ANR and intra-RAT neighbor relationship classification are enabled. The eNodeB removes the extended neighbor relationship with a PCI-confused cell that meets the following conditions:



The parameters Neighbor Cell Classification Label, Control Mode, and No remove indicator are set to EXTENDED(EXTENDED), AUTO_MODE(Auto Mode), and PERMIT_RMV_ENUM(Permit ANR Remove) for the neighbor relationship, respectively.



The PCI of an extended neighboring cell is the same as that of a formal neighboring cell or a neighboring cell in the BT list.



The formal neighbor relationship is unique in the NRT, or the neighbor relationship is unique in the BT list and the PCI of this neighboring cell is different from that of a formal neighboring cell.



The number of times the UE reads the CGI of the formal neighboring cell or the neighboring cell in the BT list is 10 folds or more than the number of times the UE reads the CGI of the extended neighboring cell.

Neighbor Relationship Query/Manual Removal

You can run the DSP EUTRANINTRAFREQNCELL or DSP EUTRANINTERFREQNCELL command to query different types of neighbor relationships with the Neighbor Cell Classification Flag parameter set to FORMAL(FORMAL), EXTENDED(EXTENDED), or ALL(ALL). Formal neighbor relationships are displayed in the command output by default. You can run the DSP EUTRANEXTENDEDNCELL command to query the neighbor relationships when the IntraRatNcellMgtMode parameter value is INTERNAL_STORAGE_MODE(StorageMode). You can run the RMV EUTRANEXTENDEDNCELL command to remove one or more extended neighbor relationships stored in the memory. You can run the RMV EUTRANINTRAFREQNCELL or RMV EUTRANINTERFREQNCELL command to remove one or more neighbor relationships with intra-frequency or inter-frequency E-UTRAN cells.

6.3 Inter-RAT Neighbor Relationship Classification 6.3.1 Neighbor Relationship Classification This function classifies neighbor relationships with GERAN and UTRAN cells. The neighbor relationships in the inter-RAT NRT do not have neighbor cell classification labels. The eNodeB stores formal neighbor relationships in the configuration database and extended neighbor relationships in the memory. NOTE: If the NRT optimization mode works in controlled mode, the unknown neighbor relationships to be added or removed will be reported to the U2000 for manual confirmation. In this case, inter-RAT neighbor relationship classification will not be performed. In other words, when the ANR.OptMode parameter is set to CONTROLLED(CONTROLLED) and the GeranCtrlOptMode(GERANCtrlOptMode) or

UtranCtrlOptMode(UTRANCtrlOptMode) option of the ANR.OptModeStrategy parameter is selected, interRAT neighbor relationship classification does not take effect.

Inter-RAT Neighbor Relationship Classification

Inter-RAT neighbor relationship classification is controlled by the GERAN_NCELL_CLASS_SW(GERAN_NCELL_CLASS_SW) or UTRAN_NCELL_CLASS_SW(UTRAN_NCELL_CLASS_SW) option of the CellAlgoSwitch.NCellClassMgtSw parameter. This function requires that inter-RAT eventtriggered ANR or fast ANR be enabled. When inter-RAT neighbor relationship classification is enabled and the corresponding frequency-specific ANR indicator is set to ALLOWED(ALLOWED), the source cell with the IRATNCellClassMgt.RatType parameter set to GERAN(GERAN) or UTRAN(UTRAN) starts a measurement period specified by the IRATNCellClassMgt.StatPeriodForNCellClass parameter. If the number of times a neighboring GERAN or UTRAN cell is included in a measurement report is greater than or equal to the IRATNCellClassMgt.NCellMeasNumThd parameter value within a measurement period, the neighbor relationship with this cell is stable. The eNodeB adds this neighbor relationship to the NRT specified by the GeranNcell or UtranNcell MO. If the following conditions are met for a neighboring GERAN or UTRAN cell within each of four consecutive measurement periods, the neighbor relationship with this cell is unstable. The eNodeB moves the neighbor relationship from the NRT specified by the GeranNcell or UtranNcell MO to the memory. 

The number of times a neighboring cell is included in a measurement report is less than the IRATNCellClassMgt.NCellMeasNumThd parameter value.



At least one neighboring cell on the frequency of this neighboring cell is included in a measurement report.

If any of the following conditions are met, neighbor relationship classification does not take effect. In this case, if the EXTENDED_NCELL_MNG_SW(EXTENDED_NCELL_MNG_SW) option of the CellAlgoSwitch.NCellClassMgtSw parameter is selected, the eNodeB moves the neighbor relationships from the memory to the configuration database. 

The GeranEventAnrSwitch(GeranEventAnrSwitch) and GeranFastAnrSwitch(GeranFastAnrSwitch) options of the ENodeBAlgoSwitch.AnrSwitch parameter are deselected for GERAN. The UtranEventAnrSwitch(UtranEventAnrSwitch) and UtranFastAnrSwitch(UtranFastAnrSwitch) options of the ENodeBAlgoSwitch.AnrSwitch parameter are deselected for UTRAN.



The INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the CellAlgoSwitch.AnrFunctionSwitch parameter is deselected.



The ANR.OptMode parameter is set to CONTROLLED(CONTROLLED), and the GeranCtrlOptMode(GERANCtrlOptMode) or

UtranCtrlOptMode(UTRANCtrlOptMode) option of the ANR.OptModeStrategy parameter is selected. 

The GERAN_NCELL_CLASS_SW(GERAN_NCELL_CLASS_SW) or UTRAN_NCELL_CLASS_SW(UTRAN_NCELL_CLASS_SW) option of the CellAlgoSwitch.NCellClassMgtSw parameter is deselected.



The corresponding frequency-specific ANR indicator is set to NOT_ALLOWED(NOT_ALLOWED).

Neighbor Relationship Query/Manual Removal

You can run LST GERANNCELL or LST UTRANNCELL to list the configurations of neighboring GERAN or UTRAN cells. You can run the DSP GERANEXTENDEDNCELL or DSP UTRANEXTENDEDNCELL command to query the neighbor relationships stored in the memory. You can run the RMV GERANEXTENDEDNCELL or RMV UTRANEXTENDEDNCELL command to remove one or more extended neighbor relationships stored in the memory. You can run the RMV GERANNCELL or RMV UTRANNCELL command to remove one or more neighbor relationships with GERAN or UTRAN cells.

6.3.2 Blacklisted Neighbor Relationship Management Management of blacklisted neighbor relationships with UTRAN cells is similar to that of blacklisted neighbor relationships with E-UTRAN cells. Both functions require that neighbor relationship classification be enabled. The following lists the differences: 

The switch of management of blacklisted neighbor relationships with UTRAN cells is specified by the UTRAN_OVERDISTANCE_SW(UTRAN_OVERDISTANCE_SW) option of the CellAlgoSwitch.AnrAlgoSwitch parameter.



The measurement period of management of blacklisted neighbor relationships with UTRAN cells is specified by the IRATNCellClassMgt.StatPeriodForNCellClass parameter.



In topology-based management of blacklisted neighbor relationships with UTRAN cells, the U2000 obtains the latitude and longitude information about the serving cell and its neighboring cell. If the distance between the two cells is greater than the NCellParaCfg.NCellOdDisThd parameter value, the neighboring cell is over-distant.

7

ANR with Shared Cells

This function consists of intra-RAT ANR with shared cells and inter-RAT ANR with shared cells.

If a neighboring cell is shared by operators, ANR maintains its PLMN list, in addition to the NCL and NRT. The PLMN lists are configured using the following MOs: 

Intra-RAT ANR: EutranExternalCellPlmn MO, which represents the PLMN list of each external E-UTRAN cell



Inter-RAT ANR: GeranExternalCellPlmn or UtranExternalCellPlmn MOs, which represents the PLMN list of each GERAN or UTRAN cell

ANR with shared cells requires the neighboring cell information obtained from the U2000 in the following methods: 

If the serving cell and neighboring cells are managed by the same U2000, the source eNodeB can obtain the neighboring cell information directly from the U2000.



If the serving cell and neighboring cells are not managed by the same U2000, the source eNodeB can obtain the neighboring cell information from the U2000 that manages the serving cell only after the neighboring cell information is imported into this U2000. Operators can import the neighboring cell information into the U2000 by using the CME. If the neighboring cell information is not imported into the U2000 in a timely manner, the source eNodeB may not obtain the neighboring cell information and ANR cannot add neighbor relationships with cells managed by another U2000 to the NRTs.

If a neighboring cell is shared by operators, a UE may not report the PLMN IDs of the secondary operators or report incorrect PLMN IDs of the primary and secondary operators. In this case, the source eNodeB obtains the PLMN information about the neighboring cell from the U2000 and automatically maintains the PLMN list of the cell.

7.1 Intra-RAT ANR with Shared Cells An E-UTRAN cell may have the following types of shared intra-RAT neighboring cells: 

E-UTRAN cell that broadcast its PLMN list in a round robin (RR) manner



E-UTRAN cell that does not broadcast its PLMN list in an RR manner

If PLMN information is changed for a shared E-UTRAN cell, the external-cell PLMN list (specified by the EutranExternalCellPlmn MO) in each peer eNodeB can be updated by intraRAT ANR and can also be updated as follows: 

If the local and peer eNodeBs are connected through an X2 interface, the local eNodeB sends X2 messages to the peer eNodeB to inform the peer eNodeB of the change. The peer eNodeB updates the external-cell PLMN list based on the X2 messages.



If the local and peer eNodeBs are not connected through an X2 interface, the external-cell PLMN list can be updated in the peer eNodeB by manually triggering either of the following CME functions: 

(a) Association between serving and neighboring cell information



(b) Consistency check between external E-UTRAN cells and their source cells

7.1.1 Shared E-UTRAN Cell Broadcasting Its PLMN List in an RR Manner If a shared neighboring E-UTRAN cell broadcasts its PLMN list in an RR manner, the UE may fail to acquire the correct PLMN list of the cell. The neighboring cell information is stored in the U2000. The eNodeB may obtain the information from the U2000 depending on the settings of the NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) option of the ENodeBAlgoSwitch.RanSharingAnrSwitch parameter and the Cell.IntraFreqRanSharingInd or EutranInterNFreq.InterFreqRanSharingInd parameter, as described in Table 7-1. On a network with more than one frequency, the Cell.IntraFreqRanSharingInd or EutranInterNFreq.InterFreqRanSharingInd parameter can be used to specify the RAN sharing policy for individual frequencies. The policy controls whether the eNodeB queries the U2000 for neighboring cell information. Table 7-1 RAN sharing policies Type of Intra- or NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) Cell.IntraFreqRanSharingInd Neighboring InterCell eNodeB

Intrafrequency

IntraSelected eNodeB

N/A

IntereNodeB

BOOLEAN_TRUE(True)

BOOLEAN_FALSE(False)

Type of Intra- or NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) Cell.IntraFreqRanSharingInd Neighboring InterCell eNodeB

Interfrequency

IntraSelected eNodeB

N/A

IntereNodeB

N/A

N/A

Type of Intra- or NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) Cell.IntraFreqRanSharingInd Neighboring InterCell eNodeB

In MOCN scenarios, the principles of adding external cells and neighbor relationships by fast ANR varies with the ANR.FastAnrMode parameter setting: 

If this parameter is set to NCL_MODE(NCL Mode) or NCL_NRT_MODE(NCL and NRT Mode), fast ANR adds external cells to the NCL after obtaining related information from the U2000.



If this parameter is set to NRT_MODE(NRT_MODE), fast ANR adds external cells to the NCL and neighbor relationships to the NRTs after obtaining related information from the U2000.

If intra-RAT event-triggered ANR detects a missing neighboring E-UTRAN cell by using eventtriggered UE measurements or intra-RAT fast ANR detects a missing neighboring E-UTRAN cell, the source eNodeB automatically maintains the PLMN list of the cell after receiving a measurement report that includes the ECGI of the cell from the UE. The maintenance procedure is as follows: 1. The source eNodeB reports the PCI and ECGI acquired by the UE to the U2000. The ECGI is comprised of the PLMN ID, eNodeB ID, and cell ID. 2. The U2000 queries the PLMN IDs of the primary and secondary operators that share the EUTRAN cell identified by the PCI and by the eNodeB ID plus cell ID. The U2000 then sends the query result to the source eNodeB. 3. The source eNodeB adds the PLMN information to the external-cell configuration of the E-UTRAN cell. NOTE: If a shared cell broadcasts its PLMN list in an RR manner, the source eNodeB must obtain information about this cell from the U2000 before handovers to this cell. UEs can be handed over to the target cell only after the target cell is added to the NCL of the source eNodeB and the NRT of the E-UTRAN cell and the PLMN information is added to the external-cell configuration of the source cell. For details about RAN sharing, see RAN Sharing Feature Parameter Description.

7.1.2 Shared E-UTRAN Cell Not Broadcasting Its PLMN List in an RR Manner If a shared neighboring E-UTRAN cell does not broadcast its PLMN list in an RR manner, the UE may not acquire a complete PLMN list of the cell. As a result, the PLMN list is not included in the external-cell configuration. The neighboring cell information is stored in the U2000. The eNodeB may obtain the information from the U2000 depending on the settings of the NBSLTERANSharingSwitch(NBSLTERANSharingSwitch) option of the ENodeBAlgoSwitch.RanSharingAnrSwitch parameter and the Cell.IntraFreqRanSharingInd or EutranInterNFreq.InterFreqRanSharingInd parameter, as described in Table 7-2. On a network with more than one frequency, the Cell.IntraFreqRanSharingInd or EutranInterNFreq.InterFreqRanSharingInd parameter can be used to specify the RAN sharing policy for individual frequencies. The policy controls whether the eNodeB queries the U2000 for neighboring cell information. Table 7-2 RAN sharing policies

Type of Intra- or NBSLTERANSharingSwitch(NBSLTERANSharingSwitch) Cell.IntraFreqRanSharingInd E Neighboring InterCell eNodeB

Intrafrequency

IntraSelected eNodeB

N/A

N

IntereNodeB

BOOLEAN_TRUE(True)

N

BOOLEAN_FALSE(False) N

Type of Intra- or NBSLTERANSharingSwitch(NBSLTERANSharingSwitch) Cell.IntraFreqRanSharingInd E Neighboring InterCell eNodeB

Interfrequency

IntraSelected eNodeB

N/A

N

IntereNodeB

N/A

B

N/A

B

Type of Intra- or NBSLTERANSharingSwitch(NBSLTERANSharingSwitch) Cell.IntraFreqRanSharingInd E Neighboring InterCell eNodeB

For details about the principles of adding neighboring cells to the NCL and adding neighbor relationships to NRTs in the preceding scenarios, see 7.1.1 Shared E-UTRAN Cell Broadcasting Its PLMN List in an RR Manner. If intra-RAT event-triggered ANR detects a missing neighboring E-UTRAN cell by using eventtriggered UE measurements or intra-RAT fast ANR detects a missing neighboring E-UTRAN cell, the source eNodeB automatically maintains the PLMN list of the cell after receiving a measurement report that contains the ECGI of the cell from the UE. The maintenance procedure varies depending on whether the UE reports the PLMN list: 

If the UE reports the PLMN list, the source eNodeB directly adds the PLMN information to the external-cell configuration.



If the UE does not report the PLMN list, the maintenance procedure is as follows: 1. The source eNodeB reports the ECGI acquired by the UE to the U2000. 2. The U2000 queries the PLMN list of the cell and then sends the query result to the source eNodeB. 3. The source eNodeB adds the PLMN information to the external-cell configuration. NOTE:

When a neighboring E-UTRAN cell (cell B) of cell A is shared by multiple operators (including two or more secondary operators), if the S1 interfaces of some secondary operators of cell B are faulty, the system information delivered in cell B does not include the PLMN IDs of these secondary operators. Therefore, the PLMN list of cell B acquired by the UE is incomplete. Cell A does not automatically add the PLMN IDs of these secondary operators to the PLMN list configuration. After the S1 interfaces recover, operators must manually add these PLMN IDs to the PLMN list configuration. If a UE does not report the PLMN list of the target cell during a handover, the source eNodeB must obtain information about this cell from the U2000. UEs can be handed over to the target cell only after the target cell is added to the NCL of the source eNodeB and the PLMN information is added to the external-cell configuration of the source cell.

7.2 Inter-RAT ANR with Shared Cells An E-UTRAN cell may have the following types of shared inter-RAT neighboring cells: 

UTRAN cell



GERAN cell

7.2.1 Shared GERAN Cell If a neighboring GERAN cell is shared by operators, UEs do not report the PLMN list of the cell. As a result, the PLMN list is not included in the external-cell configuration. The neighboring cell information is stored in the U2000. The eNodeB may obtain the information from the U2000 depending on the settings of the NBSGERANRANSharingSwitch(NBSGERANRANSharingSwitch) option of the ENodeBAlgoSwitch.RanSharingAnrSwitch parameter. On a network with more than one GERAN frequency group, the GeranNFreqGroup.GeranRanSharingInd parameter can be used to specify the RAN sharing policy for individual frequency groups. The policy controls whether the eNodeB queries the U2000 for neighboring cell information. 

If this parameter is set to BOOLEAN_TRUE(True), the source eNodeB can obtain the neighboring cell information from the U2000. The principles of adding external cells and neighbor relationships by event-triggered ANR are the same as those without information query from the U2000. If the ANR.FastAnrMode parameter is set to NCL_NRT_MODE(NCL and NRT Mode), the principles of the addition of external cells and neighbor relationships by fast ANR are different from those without information query from the U2000. The difference is that the eNodeB adds the strongest and second strongest unknown neighboring cells to the NCL. If the ANR.FastAnrMode parameter is set to values other than NCL_NRT_MODE(NCL and NRT Mode), the principles of adding external cells and neighbor relationships by fast ANR are the same as those without information query from the U2000.



If this parameter is set to BOOLEAN_FALSE(False), the source eNodeB does not query the neighboring cell information from the U2000.

If ANR detects a missing neighboring GERAN cell, the eNodeB automatically maintains the PLMN list of the cell after receiving a measurement report that contains the CGI of the cell from the UE. The maintenance procedure is as follows: 1. The eNodeB reports the CGI acquired by the UE to the U2000. 2. The U2000 queries the PLMN list of the cell and then sends the query result to the eNodeB. 3. The eNodeB adds the PLMN information to the external-cell configuration. NOTE:

If a UE does not report the PLMN list of the target cell during a handover, the eNodeB must obtain information about this cell from the U2000. UEs can be handed over to the target cell only after the target cell is added to the NCL of the eNodeB and the PLMN information is added to the external-cell configuration of the source cell.

7.2.2 Shared UTRAN Cell If a neighboring UTRAN cell is shared by operators, the UE may not acquire a complete PLMN list of the cell. As a result, the PLMN list is not included in the external-cell configuration. The neighboring cell information is stored in the U2000. The eNodeB may obtain the information from the U2000 depending on the settings of the NBSUTRANRANSharingSwitch(NBSUTRANRANSharingSwitch) option of the ENodeBAlgoSwitch.RanSharingAnrSwitch parameter. On a network with more than one UTRAN frequency, the UtranNFreq.UtranRanSharingInd parameter can be used to specify the RAN sharing policy for individual frequencies. The policy controls whether the eNodeB queries the U2000 for neighboring cell information. 

If this parameter is set to BOOLEAN_TRUE(True), the source eNodeB can obtain the neighboring cell information from the U2000. The principles of adding external cells and neighbor relationships by event-triggered ANR are the same as those without information query from the U2000. If the ANR.FastAnrMode parameter is set to NCL_NRT_MODE(NCL and NRT Mode), the principles of the addition of external cells and neighbor relationships by fast ANR are different from those without information query from the U2000. The difference is that the eNodeB adds the strongest and second strongest unknown neighboring cells to the NCL. If the ANR.FastAnrMode parameter is set to values other than NCL_NRT_MODE(NCL and NRT Mode), the principles of adding external cells and neighbor relationships by fast ANR are the same as those without information query from the U2000.



If this parameter is set to BOOLEAN_FALSE(False), the source eNodeB does not query the neighboring cell information from the U2000.

If ANR detects a missing neighboring UTRAN cell, the eNodeB automatically maintains the PLMN list of the cell after receiving a measurement report that contains the CGI of the cell from the UE. The maintenance procedure varies depending on whether the UE reports the PLMN list: 

If the UE reports the PLMN list, the eNodeB directly adds the PLMN information to the external-cell configuration.



If the UE does not report the PLMN list, the maintenance procedure is as follows: 1. The eNodeB reports the CGI acquired by the UE to the U2000. 2. The U2000 queries the PLMN list of the cell and then sends the query result to the eNodeB. 3. The eNodeB adds the PLMN information to the external-cell configuration. NOTE:

If a UE does not report the PLMN list of the target cell during a handover, the eNodeB must obtain information about this cell from the U2000. UEs can be handed over to the target cell only after the target cell is added to the NCL of the eNodeB and the PLMN information is added to the external-cell configuration of the source cell.

8

PLMN ID Management

This section describes LBFD-081102 PLMN ID Management. When UEs detect and report neighboring cells with invalid PLMN IDs to an eNodeB, this function implies differentiated management policies for different PLMN IDs. This function applies to scenarios where neighboring cells are across the borders of different PLMNs or abnormal UEs report invalid PLMN IDs. Attributes of a PLMN ID can be manually set in the NCellPlmnList MO. For each PLMN ID, operators need to set the attributes by configuring the NCellPlmnList.Mcc, NCellPlmnList.Mnc, NCellPlmnList.RatType, and NCellPlmnList.PlmnListType parameters. where 

The NCellPlmnList.Mcc and NCellPlmnList.Mnc parameters indicate the mobile country code (MCC) and mobile network code (MNC). A PLMN ID is comprised of an MCC and an MNC.



The NCellPlmnList.RatType parameter indicates the RAT of neighboring cells of a PLMN. It can be set to EUTRAN(EUTRAN), UTRAN(UTRAN), or GERAN(GERAN).



The NCellPlmnList.PlmnListType parameter indicates the type of a PLMN. 

If this parameter is set to BLACK_LIST(BLACK_LIST) for a PLMN, the eNodeB cannot add cells of the PLMN to NCLs or add neighbor relationships with these cells to NRTs by ANR.



If this parameter is set to GREY_LIST(GREY_LIST) for a PLMN, the eNodeB can add cells of the PLMN to NCLs and add neighbor relationships with these cells to NRTs by ANR. In addition, ANR automatically sets the Neighbor Cell Plmn Label parameter to GREY(GREY) for these cells. The eNodeB does not remove a neighbor relationship for which the Neighbor Cell Plmn Label parameter is set to GREY(GREY) from an NRT when removing redundant neighbor relationships. This prevents such a neighbor relationship from being repeatedly removed.



If this parameter is set to WHITE_LIST(WHITE_LIST) for a PLMN, the eNodeB can add cells of the PLMN to NCLs and add neighbor relationships with these cells to NRTs by ANR. In addition, ANR automatically sets the Neighbor Cell Plmn Label parameter to WHITE(WHITE) for these cells.

Operators can check the PLMN list labels of neighboring cells by running the DSP EUTRANINTRAFREQNCELL, DSP EUTRANINTERFREQNCELL, DSP UTRANNCELL, and DSP GERANNCELL commands. Note that the information of neighboring cells for which the Neighbor Cell Plmn Label parameter is set to WHITE(WHITE) is displayed by default. In addition, at most two PLMN labels can be manually configured for neighboring cells of each RAT. It is recommended that whitelists and greylists be configured. In such a case, the PLMNs with unspecified types are in the blacklists, and ANR will not add these PLMNs to the NCL or NRT. For neighboring cells of an RAT, if operators set some PLMNs to one type and leave other PLMNs' types undefined or leave all PLMNs' types undefined, the eNodeB handles as follows: 

If operators configure only blacklisted PLMNs, other type-undefined PLMNs are regarded as whitelisted by default.



If operators configure only whitelisted PLMNs, other type-undefined PLMNs are regarded as greylisted by default.



If operators configure only greylisted PLMNs, other type-undefined PLMNs are regarded as whitelisted by default.



If operators do not define the type of any PLMN, all PLMNs are regarded as whitelisted by default.

In scenarios where abnormal UEs report neighboring cells with invalid PLMN IDs, if the eNodeB adds such cells to NCLs and adds neighbor relationships with such cells to NRTs, the addition of correct neighboring cells and neighbor relationships is affected, as well as the target cell selection in handovers. Therefore, it is recommended that the NCellPlmnList.PlmnListType parameter be set to BLACK_LIST(BLACK_LIST) for the invalid PLMNs. In scenarios where the neighboring cells are near the border of PLMNs, UEs can detect these neighboring cells. If the neighboring cells are not added to NCLs and neighbor relationships with these cells are not added to NRTs, UEs repeatedly read the CGIs of these neighboring cells and target cells are incorrectly selected during handovers. Therefore, it is recommended that operators add neighboring PLMNs to the PLMN greylist by setting the NCellPlmnList.PlmnListType parameter to GREY_LIST(GREY_LIST).

9

Related Features

9.1 Features Related to LOFD-002001 Automatic Neighbour Relation (ANR) Prerequisite Features

Feature ID

WOFD-180600

Feature/Function Name

Automatic Neighbor Relation Optimization LTE

Description

This is a feature of the U2000.

Mutually Exclusive Features

None Impacted Features

Feature ID

Feature/Function Name

Description

LOFD-002007

PCI Collision Detection & Self-Optimization

PCI conflict detection is triggered when intra-RAT ANR changes neighboring cell information.

N/A

CA

Currently, if the E-UTRAN supports CA (included in LAOFD-001001 LTE-A Introduction) according to eNodeB configurations and UE capabilities, the eNodeB does not select certain CA UEs to perform measurements for intra-RAT event-triggered ANR or intra-RAT fast ANR. The CA UE selection rule is specified by the ANR.CaUeChoseMode parameter.

N/A

Handover

ECGI reading is triggered if a handover is required when PCI confusion occurs and ANR is enabled.

9.2 Features Related to LOFD-002002 Inter-RAT ANR Prerequisite Features

Feature ID

WOFD-181400

Feature/Function Name

Inter-RAT Automatic Neighbor Relation Optimization -LTE

Description

This is a feature of the U2000.

Mutually Exclusive Features

None Impacted Features

Feature ID

N/A

Feature/Function Name

CA

Description

Currently, if the E-UTRAN supports CA (included in LAOFD-001001 LTE-A Introduction) according to eNodeB configurations and UE capabilities, the eNodeB does not select certain CA UEs to perform measurements for inter-RAT event-triggered ANR or inter-RAT fast ANR. The CA UE selection rule is specified by the ANR.CaUeChoseMode parameter.

9.3 Features Related to LOFD-081225 Neighbor Cell Classification Management Prerequisite Features

Feature ID

Feature Name

Description

LOFD-002001

Automatic Neighbour Relation (ANR)

None

LOFD-002007

PCI Collision Detection & Self-Optimization

None

WOFD-171600

Neighbor Cell Distance This is a feature of the U2000. and Overshooting Detection - LTE FDD/TDD

Mutually Exclusive Features

None Impacted Features

None

9.4 Features Related to LBFD-081102 PLMN ID Management

Prerequisite Features

None Mutually Exclusive Features

None Impacted Features

None

10

Network Impact

10.1 LOFD-002001 Automatic Neighbour Relation (ANR) System Capacity

No impact. Network Performance

Event-triggered ANR 

Event-triggered ANR prolongs the delay in the handover of a UE that meets the handover conditions but that is still performing ANR measurements to detect an unknown cell. After the neighbor relationship with the cell is added, ANR measurements are not triggered during subsequent handovers to the cell and therefore the delay in handovers to the cell is no longer prolonged.



Event-triggered ANR negatively affects the UE throughput because UEs cannot be scheduled while they are reading the CGI of an unknown cell in the DRX state. On commercial networks, UEs are usually not fully buffered, and therefore the impact on the UE throughput is limited. After the neighbor relationship with the cell is added, the throughput is no longer affected when UEs are handed over to the cell.



UEs read CGIs in sleep time during DRX. The sleep time stops when a data packet arrives. This has an impact on the CGI reading success rate. This success rate is even lower at UEs running VoLTE services, which are scheduled at a fixed interval and encounter a higher probability that the sleep time stops. After a CGI is acquired, the identified cell is automatically configured as a neighboring cell and UEs are no longer instructed to read the CGI.

Fast ANR



Periodic reporting of the PCIs of the strongest cells may affect network performance. LTE measurements are performed on a per frequency basis. Periodic reporting of the PCIs of the strongest intra-frequency cells does not affect UE throughput. Inter-frequency ANR requires gap-assisted measurements, which negatively affect UE throughput.



CGI reading affects network performance as follows: 

To read the CGI of an unknown cell, the UE must be synchronized with the cell. The UE acquires the PLMN IDs, CGI, and TAC of the cell from the system information block type 1 (SIB1) and then reports the information to the source eNodeB. This process negatively affects UE throughput.



To read the CGI of an unknown cell, the UE enters sleep time in the DRX state. During sleep time, the UE cannot be scheduled, and therefore UE throughput is negatively affected.



The overall impact of fast ANR on network performance is controllable, because of the upper limits on the number of UEs involved in fast ANR per cell and on the number of periodic measurement reports from a UE within each period.



A larger number of periodic measurement reports from a UE results in more power consumption of the UE.

Event-triggered ANR and fast ANR can optimize intra-RAT neighbor relationships and reduce service drops and handover failures caused by neighbor relationship problems. This decreases the service drop rate and increases the intra-RAT handover success rate. However, the gain produced by ANR cannot be quantified, and many factors affect the handover success rate and service drop rate. The number and distribution of ANR-capable UEs affect how fast ANR can detect missing neighboring cells. When ANR detects missing neighboring shared cells, the eNodeB queries the U2000 for the cells. The query lasts for a maximum of 3 minutes and may affect the handover. If no candidate target cell is available for the handover, a service drop may occur.

10.2 LOFD-002002 Inter-RAT ANR System Capacity

No impact. Network Performance

Inter-RAT ANR has a similar impact on network performance as intra-RAT ANR. The difference is that inter-RAT ANR increases the inter-RAT handover success rate, involving the following KPIs: 

Inter-RAT Handover Out Success Rate (LTE to WCDMA)



Inter-RAT Handover Out Success Rate (LTE to GSM) NOTE:

If operators do not confirm the optimization advice that suggests adding the neighbor relationship with a UTRAN cell, UEs cannot be handed over to the UTRAN cell. In this case, ANR with UTRAN neither decreases the service drop rate nor increases the EUTRAN-to-UTRAN handover success rate.

10.3 LOFD-081225 Neighbor Cell Classification Management System Capacity

No impact. Network Performance

If the Neighbor Cell Classification Label parameter is set to EXTENDED(EXTENDED) for a neighboring cell and the NCELL_CLASS_HO_POLICY_SW(NCELL_CLASS_HO_POLICY_SW) option of the Neighbor Cell Classification Mgt Switch parameter is selected, the eNodeB instructs a UE to perform CGI reading before handing the UE over to this neighboring cell. This can detect possible PCI confusion, increasing the handover success rate and decreasing the service drop rate. However, this increases the handover delay of the UE and decreases the UE throughput. If the CGI reading fails, there is a possibility that UE experiences a service drop.

10.4 LBFD-081102 PLMN ID Management System Capacity

No impact. Network Performance

This feature prevents neighbor relationships with cells that have abnormal PLMN IDs from being added to NRTs, thereby increasing the handover success rate and decreasing the service drop rate.

11

Engineering Guidelines for Intra-RAT ANR

This chapter describes how to deploy intra-RAT ANR.

11.1 When to Use Intra-RAT ANR Intra-RAT ANR provides the following sub-functions: 

Intra-RAT event-triggered ANR



Intra-RAT fast ANR



Intra-RAT backward ANR



Automatic optimization of neighbor relationships with cells having abnormal intra-RAT handover success rates



Intra-RAT neighbor relationship classification



Intra-RAT blacklisted neighbor relationship management



Intra-RAT ANR with shared cells



NCL/NRT self-management based on X2 messages



PLMN ID management

It is recommended that these sub-functions be used together. The following describes when to use intra-RAT ANR in different stages of network deployment. eNodeB Deployment 

Intra-RAT event-triggered ANR It is recommended that removal of redundant neighbor relationships with E-UTRAN cells be disabled. Otherwise, neighbor relationships may be unexpectedly removed because the number of UEs in handovers is small.



(Optional) Intra-RAT fast ANR It is recommended that intra-RAT fast ANR be enabled only when the network serves a small number of commercial UEs or engineering optimization (for example, downtilt adjustment and power adjustment) does not finish. It is recommended that this sub-function be disabled when the network serves a large number of commercial UEs and engineering optimization finishes.



(Optional) Intra-RAT backward ANR If bidirectional handovers between cells are performed on all frequencies, it is recommended that this function be enabled. Otherwise, it is recommended that this function be disabled to avoid unnecessary neighbor relationships from being added to NRTs.



Automatic optimization of neighbor relationships with cells having abnormal intra-RAT handover success rates This function includes two sub-functions. It is recommended that PCI confusion detection based on the handover success rate be enabled to avoid PCI confusions from affecting the handover success rate. It is recommended that automatic setting of the no handover indicator based on the handover success rate be enabled based on the actual requirements. If this sub-function is enabled, the No handover indicator parameter is automatically set to FORBID_HO_ENUM(Forbid Ho) for neighbor relationships.



Intra-RAT neighbor relationship classification It is recommended that the INTRA_RAT_NCELL_CLASS_SW(INTRA_RAT_NCELL_CLASS_SW) and

NCELL_CLASS_PCI_CONFLICT_SW(NCELL_CLASS_PCI_CONFLICT_SW) options be selected and the NCELL_CLASS_HO_POLICY_SW(NCELL_CLASS_HO_POLICY_SW) option be deselected. Deselecting the NCELL_CLASS_HO_POLICY_SW(NCELL_CLASS_HO_POLICY_SW) option reduces the number of times of CGI reading before handovers. It is recommended that the Intra-RAT Neighbor Cell Management Mode parameter be set to INTERNAL_STORAGE_MODE(StorageMode) to reduce the number of configured neighboring cells and improve the OM experience. It is recommended that the INTRA_RAT_OVERDISTANCE_SW(INTRA_RAT_OVERDISTANCE_SW) option be selected for the blacklisted neighbor relationship management. This setting identifies over-distant neighboring cells to which UEs are seldom handed over or that have low handover success rates so that the eNodeB applies differentiated handling of these neighboring cells to reduce the number of handovers to over-distant neighboring cells. 

(Optional) Intra-RAT ANR with shared cells Enable ANR with shared E-UTRAN cells when both of the following conditions are met: 

Neighboring E-UTRAN cells are shared by operators. If some neighboring eNodeBs provide cells working in RAN sharing mode and broadcast the PLMN lists in an RR manner, select the NBSLTEPLMNRoundSwitch option of the RanSharingAnrSwitch parameter. If some neighboring eNodeBs provides cells working in RAN sharing mode and do not broadcast the PLMN lists in an RR manner, deselect the NBSLTEPLMNRoundSwitch option of the RanSharingAnrSwitch parameter and select the NBSLTERANSharingSwitch option of the same parameter.



The serving and neighboring cells are managed by the same U2000, or the configuration data of the neighboring cells has been imported to the U2000 that manages the serving cell.

Disable ANR with shared E-UTRAN cells when either of the preceding conditions is not met. 

NCL/NRT self-management based on X2 messages NCL entry addition based on X2 messages: It is recommended that this function be disabled to avoid redundant NCL entries. Especially when cells are geographically adjacent, this function causes a large number of redundant NCL entries. NCL/NRT entry update based on X2 messages: Enable this function if an X2 interface is configured between the local and peer eNodeBs and operators do not use the CME to modify the eNodeB configurations that affect neighbor relationships. If the function is enabled in this situation, inappropriate neighbor relationships can be avoided. Examples of the configuration data are parameters eNodeBFunction.eNodeBId, Cell.CellId, Cell.LocalCellId, Cell.PhyCellId, and Cell.DlEarfcn, as well as the parameters in the

MOs CnOperator, CnOperatorTa, and CellOp. If any of the preceding conditions is not met, it is recommended that this function be disabled. NCL/NRT entry removal based on X2 messages: Enable this function if an X2 interface is configured between the local and peer eNodeBs and operators do not use the CME to modify the eNodeB configurations that affect neighbor relationships. If this function is enabled in this situation, inappropriate or redundant neighbor relationships can be removed. If any of the preceding conditions is not met, it is recommended that this function be disabled. If NCL/NRT entry update or removal based on X2 messages is enabled, you are advised to set the GlobalProcSwitch.X2ServedCellType parameter to CONFIGURED_CELL(Configured Cell) to prevent neighbor relationship configuration loss due to the modification of ECGIs or PCIs. 

(Optional) PLMN ID management Use PLMN ID management when neighboring cells are near the borders of PLMNs and when UEs report invalid PLMN IDs. UEs detect and report neighboring cells with invalid PLMNs. The PLMN ID management function detects neighboring cells with abnormal PLMNs and applies differentiated management on PLMNs.



(Optional) HO blacklist Add neighbor relationships to HO blacklists in some special cases. For example, if UEs in indoor cells on high floors can detect outdoor neighboring cells and users do not want UEs to initiate handovers to such outdoor neighboring cells, add the neighbor relationships with such outdoor cells to the blacklists. You can only manually configure HO blacklists.



(Optional) HO whitelist Add neighbor relationships to HO whitelists in some special cases. For example, the traffic volumes of cells are uneven in the places, such as sports stadiums or venues. These cells have traffic volumes only in special times. If the neighbor relationships with the cells around are not added to the HO whitelists, ANR may determine these neighbor relationships as redundant neighbor relationships and removes them from the NRTs. In this case, you are advised to add the neighbor relationships with the cells around the areas whose traffic volume is uneven to the HO whitelists. This prevents ANR from mistakenly removing them from the NRTs. You can only manually configure HO whitelists.



(Optional) RRC blacklist Add the operating frequency and PCI of a neighboring cell to an RRC blacklist in some special cases. For example, if cells in the network edge of an operator operate on the same frequency but do not share PCIs, users can add the PCI range used by another operator to the RRC blacklists. This prevents the UEs served by cells of the operator from detecting cells of another operator.

If some neighboring eNodeBs provide cells working in RAN sharing mode and broadcast the PLMN lists in an RR manner, select the NBSLTEPLMNRoundSwitch option of the RanSharingAnrSwitch parameter. If some neighboring eNodeBs provides cells working in RAN sharing mode and do not broadcast the PLMN lists in an RR manner, deselect the NBSLTEPLMNRoundSwitch option of the RanSharingAnrSwitch parameter and select the NBSLTERANSharingSwitch option of the same parameter. For example, if neighboring cells A and B operate on the same frequency and share the same PCI and neighboring cell A is not an expected target cell for handovers and redirections, you are advised not to add this PCI to the RRC blacklist. This is because the RRC blacklist is set to blacklist the PCIs of cells operating on the same frequency. If the operating frequency and PCI of neighboring cell A are blacklisted, neighboring cell B cannot be the target cell for handovers and redirections as well. NOTE: In service steering scenarios, if an E-UTRA frequency is deployed for providing only VoIP services, use intra-RAT ANR after initial planning and configuration of the neighbor relationships of cells on this frequency.

Site Expansion or Migration

It is recommended that the following functions be enabled during site expansion or migration. Enable other functions according to operators' policies. 

Intra-RAT event-triggered ANR It is recommended that the functions removal of inappropriate neighbor relationships, priority-based removal, and removal of redundant neighbor relationships be enabled.



(Optional) Intra-RAT backward ANR Enable this function based on the policies applied to frequencies on the network.



Automatic optimization of neighbor relationships with cells having abnormal intra-RAT handover success rates It is recommended that this function be enabled.



Intra-RAT neighbor relationship classification It is recommended that the intra-RAT neighbor relationship classification and blacklisted neighbor relationship management functions be enabled.



(Optional) NCL/NRT self-management based on X2 messages (Optional) It is recommended that NCL/NRT self-management based on X2 messages be enabled.



(Optional) PLMN ID management It is recommended that the PLMN ID management function be enabled.

11.2 Required Information None

11.3 Deployment 11.3.1 Process The deployment process for intra-RAT ANR varies with network deployment stages. eNodeB Deployment

Figure 11-1 illustrates the deployment process for intra-RAT ANR during eNodeB deployment.

Figure 11-1 Deployment process for intra-RAT ANR during eNodeB deployment

Site Expansion or Migration

Figure 11-2 illustrates the deployment process for intra-RAT ANR during site expansion or migration.

Figure 11-2 Deployment process for intra-RAT ANR during site expansion or migration

11.3.2 Requirements

Intra-RAT ANR has the following requirements: 

UEs on the network are DRX-capable and support ANR measurements on intra- and interfrequency cells.



iManager U2000 V200R015C00 or later is used. iManager U2000 V200R015C00 or later supports the function of cross-U2000 neighboring cell information query.



In automatic detection of missing neighboring cell using UE history information, if the serving cell and neighboring cell are not managed by the same U2000, the U2000 must support the function of cross-U2000 neighboring cell information query.



If the serving cell and neighboring cell are managed by different U2000s, ANR with shared cells requires cross-U2000 neighboring cell information query. In this case, operators must import the neighboring cell information into the U2000 that manages the serving cell regularly. Assume that the serving cell (cell A) is managed by U2000 A, and the neighboring cell (cell B) is managed by U2000 B. The operations and requirements of importing neighboring cell information to U2000 A are as follows: 

Set FTP server information on U2000 B for automatically uploading neighboring cell information to U2000 A.



On the client of U2000 B, choose Software > FTP Auto Upload Management > Target Server Setting. The Target Server Setting dialog box is displayed. In the left pane, select CME NCCDM and click Add. In the displayed dialog box, set Server IP to the IP address of U2000 A, and set Server Directory to the server path that stores the files transferred. For details, see "Setting a Server for Auto-Uploading Files Through the FTP" in the Software and Hardware Management in U2000 product documentation.



On U2000 B, use the CME to create a scheduled task of exporting neighboring cell information with the task type set to Inter-System Neighboring Cell Export. On the task interface, Import Inter-Rat ANR Data must be selected. For details, see "Synchronizing Inter-System Neighboring Cell Data on a Scheduled Basis" in iManager U2000 MBB Network System Online Help.



On U2000 A, enable cross-U2000 neighboring cell information query by selecting Enable cross-OSS neighboring cell optimization. Set the file path to the value of Server Directory specified on U2000 B. For details, see "Setting ANR Switches and Parameters" in SON Management in U2000 product documentation. NOTE:

You are advised to create the query task with the user name set to ftpuser. In such a case, you only need to set a relative file path. For details about relative and absolute file paths, see iManager U2000 MBB Network Management System Product Documentation.



The intra-RAT ANR measurement information (including frequencies to be measured) has been configured in the EutranInterNFreq MOs. For details, see Intra-RAT Mobility Management in Connected Mode Feature Parameter Description.



The configurations in the CME engineering parameter table are correct when the blacklisted neighbor relationship management function is enabled. The following are required in the CME engineering parameter table:





For non-multi-RRU cells, the CGI (comprised of eNodeB ID, MCC, MNC, and Cell ID), latitude, and longitude information about the cells is specified on the LTE sheet.



For multi-RRU cells, the CGI information about the cells is specified on the LTE sheet. The "REPEATERRRU" field is set to Yes, indicating that multiple RRUs exist and the latitude and longitude of each RRU need to be specified. On the REPEATER sheet, the CGI, RAT (RATTYPE=LTE), RRU name (RepeaterName), latitude, and longitude information about the cells is specified. Multiple rows with the same CGI but different latitudes and longitudes are specified for a multi-RRU cell.

Operators have purchased and activated the license listed in Table 11-1.

Table 11-1 License information for intra-RAT ANR Feature ID

Feature Name

Model

License Control Item

Automatic Neighbour Relation (ANR)(FDD)

NE

LOFD002001

Automatic Neighbour Relation (ANR)

LT1S000ANR00

LOFD081225

Neighbor Cell Classification Management

LT1S00NCCM00 Neighbor Cell Cell Classification Management (Per Cell)

Sales Unit

eNodeB per cell

per cell

11.3.3 Precautions None

11.3.4 Hardware Adjustment N/A

11.3.5 Data Preparation and Feature Activation 11.3.5.1 Data Preparation There are three types of data sources: 

Network plan (negotiation not required): parameter values planned and set by the operator



Network plan (negotiation required): parameter values planned by the operator and negotiated with the EPC or peer transmission equipment



User-defined: parameter values set by users

Intra-RAT ANR on a Per Frequency Basis

The following table describes the parameter that must be set in a Cell MO to specify whether to allow ANR management of external cells and neighbor relationships with these cells on the serving frequency. Parameter Name

Parameter ID

Data Source

IntraFreq Cell.IntraFreqAnrInd Network ANR plan Indication (negotiation not required)

Setting Notes

Set this parameter to NOT_ALLOWED(NOT_ALLOWED) or ALLOWED(ALLOWED) based on the operator's policy.

The following table describes the parameter that must be set in an EutranInterNFreq MO to specify whether to allow ANR management of external cells and neighbor relationships with these cells on a neighboring E-UTRAN frequency. Parameter Name

Parameter ID

Data Source

EutranInterNFreq.AnrInd Network ANR Indication plan (negotiation not required)

Setting Notes

Set this parameter to NOT_ALLOWED(NOT_ALLOWED) or ALLOWED(ALLOWED) based on the operator's policy.

Optimization Mode of Intra-RAT ANR

The following describes the parameters that must be set in the ANR MO to set the optimization mode and optimization mode policy. Parameter Name

Parameter ID

Optimization ANR.OptMode Mode

Data Source

Setting Notes

Set this parameter to FREE(FREE) or Network CONTROLLED(CONTROLLED) based on plan (negotiation the operator's policy.

Parameter Name

Parameter ID

Data Source

Setting Notes

not required) Optimization ANR.OptModeStrategy Network It is recommended that the EutranCtrlOptMode(EUTRANCtrlOptMode) Mode plan Strategy (negotiation option be selected. not required)

NRT Entry Addition by Using Intra-RAT Event-triggered ANR

The following table describes the parameters that must be set in the ENodeBAlgoSwitch MO to configure the function of "NRT entry addition by using intra-RAT event-triggered ANR". Parameter Name

Parameter ID

ENodeBAlgoSwitch.AnrSwitch ANR algorithm switch

ANR Function Switch

Data Source

Setting Notes

Network Select or deselect the following options by refe plan Intra-RAT ANR: (negotiation  IntraRatEventAnrSwitch(IntraRatEventAnr not  MlbBasedEventAnrSwitch(MlbBasedEven required)  ServiceBasedEventAnrSwitch(ServiceBas  IntraRatEnhancedEventAnrSwitch(IntraRa  IntraRatNoHoSetAnrSwitch(IntraRatNoHo  CaBasedEventAnrSwitch(CaBasedEventA  InterFreqAngcAnrSwitch(InterFreqAngcAn

CellAlgoSwitch.AnrFunctionSwitch Network Select or deselect the INTRA_RAT_ANR_SW( plan option by referring to 11.1 When to Use Intra-R (negotiation not required)

The following table describes the parameter that must be set in the ANR MO to specify the policy based on which the eNodeB adds a neighbor relationship to an NRT in event-triggered ANR.

Parameter Name

Event ANR Mode

Parameter ID

Data Source

ANR.EventAnrMode Network plan (negotiation not required)

Setting Notes

This parameter specifies the policy based on which the eNodeB adds a neighbor relationship into an NRT in event-triggered ANR based on coverage-based intra- or interfrequency handover measurements and in event-triggered ANR based on MLB-based inter-frequency measurements. If adjacent cells of an eNodeB share PCIs, you are advised to set this parameter to NOT_BASED_NCL(NOT_BASED_NCL) to prevent inappropriate neighbor relationships from being added to NRTs. With the parameter set to NOT_BASED_NCL(NOT_BASED_NCL), the eNodeB does not add a neighbor relationship to an NRT based on the neighboring cell information in the NCL but based on the reported ECGI. If the ANR.EventAnrMode parameter is set to NOT_BASED_NCL(NOT_BASED_NCL), the eNodeB reports the optimization advice for adding the neighbor relationship with a cell into an NRT to the U2000. Operators determine whether to take the advice. Before operators confirm this optimization advice, the eNodeB instructs the UE to read the ECGI of the cell if the PCI contained in an intra-RAT measurement report does not exist in the NRT. To prevent performance deterioration due to ECGI reading before handovers, operators are advised to handle the NRT optimization advice promptly on the U2000.

Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Intra-RAT ANR

The following table describes parameters that must be set in the ENodeBAlgoSwitch MO to specify whether to enable removal of inappropriate neighbor relationships and priority-based removal in intra-RAT ANR.

Parameter Name

Parameter ID

Data Source

ENodeBAlgoSwitch.AnrSwitch ANR algorithm switch

ANR Function Switch

Setting Notes

Network Select or deselect the following options by refe plan When to Use Intra-RAT ANR: (negotiation  IntraRatEventAnrSwitch(IntraRatEventAnr not  IntraRatAnrAutoDelSwitch(IntraRatAnrAut required)

CellAlgoSwitch.AnrFunctionSwitch Network Select or deselect the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW plan (negotiation by referring to 11.1 When to Use Intra-RAT AN not required)

The following table describes the parameters that must be set in the ANR MO to specify threshold of the number of handovers for evaluating whether to remove an NRT entry and specify whether to enable removal of inappropriate neighbor relationships with E-UTRAN cells. Parameter Name

Parameter ID

Data Source

Handover ANR.NcellHoForNRTDelThd Network threshold plan for delete (negotiation NRT not required)

Setting Notes 



ANR.NcellCaThdForNRTDel Network CA Threshold plan for NRT (negotiation Deletion not required) NRT Delete Mode

ANR.NrtDelMode

If this parameter is set to a non-zero value and th neighbor relationships in an NRT has reached its eNodeB determines whether to remove a neighbo neighboring cell based on the number of measure include the neighboring cell and the number of ha local cell to the neighboring cell. When there are neighbor relationships that meet certain condition lowest-priority neighbor relationship. The priority i number of handovers. If this parameter is set to 0 and the number of nei in an NRT has reached its maximum value, the eN whether to remove a neighbor relationship with a based on the number of measurement reports tha neighboring cell.

This parameter indicates the threshold (expressed as cell has been configured as an SCell) used for neighbo removal when the number of NRT entries has reached new neighbor relationship needs to be added.

Network Select the EUTRAN_DELCELLERRORNCELL(EUTRAN_DELC plan (negotiation option of this parameter.

Parameter Name

Parameter ID

Data Source

Setting Notes

not required)

Removal of Redundant Neighbor Relationships in Intra-RAT ANR

The following table describes the parameter that must be set in the ENodeBAlgoSwitch MO to specify whether to enable removal of NRT entries. Parameter Name

Parameter ID

ENodeBAlgoSwitch.AnrSwitch ANR algorithm switch

ANR Function Switch

Data Source

Setting Notes

Network Select or deselect the following options by refe plan When to Use Intra-RAT ANR: (negotiation  IntraRatEventAnrSwitch(IntraRatEventAnr not  IntraRatAnrAutoDelSwitch(IntraRatAnrAut required)

CellAlgoSwitch.AnrFunctionSwitch Network Select or deselect the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW plan (negotiation by referring to 11.1 When to Use Intra-RAT AN not required)

The following table describes the parameter that must be set in the ANR MO to specify whether to enable removal of redundant neighbor relationships with E-UTRAN cells. Parameter Name

NRT Delete Mode

Parameter ID

Data Source

ANR.NrtDelMode Network plan (negotiation not required)

Setting Notes

Set this parameter by referring to 11.1 When to Use Intra-RAT ANR.

Penalty on Removed Neighbor Relationships with E-UTRAN Cells

The following table describes the parameters that must be set in the ANR MO to configure the statistical period of a penalty on removed neighbor relationships and the statistical count of a penalty on removed neighbor relationships.

Parameter Name

Parameter ID

Neighbor ANR.NcellDelPunishPeriod Cell Deletion Punish Period

Data Source

Setting Notes

The recommended value is 10080. Network plan (negotiation not required)

EUTRAN ANR.EutranNcellDelPunNum Network Neighbor plan Cell (negotiation Deletion not Punish required) Number

If this parameter is set to 1, the penalty function does not take effect. If this parameter is set to a value greater than 1, this function takes effect. You are advised to set this parameter to a value greater than 1.

Intra-RAT Fast ANR

The following table describes the parameters that must be set in the ENodeBAlgoSwitch MO to configure intra-RAT fast ANR. Parameter Name

Parameter ID

ENodeBAlgoSwitch.AnrSwitch ANR algorithm switch

ANR Function Switch

Data Source

Network plan (negotiation not required)

CellAlgoSwitch.AnrFunctionSwitch Network plan (negotiation not required)

Setting Notes

Select or deselect the IntraRatFastAnrSwitch(IntraRatFastAnrSwit option by referring to 11.1 When to Use Intra-R ANR.

Select or deselect the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW option by referring to 11.1 When to Use Intra-R ANR.

The following table describes the parameter that must be set in the ANR MO to configure the number of periodic PCI measurement reports sent for fast ANR.

Parameter Name

Parameter ID

Data Source

Setting Notes

ANR.FastAnrRprtAmount Network Fast Set this parameter by referring to 11.1 ANR PCI plan When to Use Intra-RAT ANR. report (negotiation amount not required)

Intra-RAT Backward ANR

The following table describes the parameter that must be set in the CellAlgoSwitch MO to configure intra-RAT backward ANR. Parameter Name

Parameter ID

Data Source

CellAlgoSwitch.AnrAlgoSwitch Network ANR Algorithm plan Switch (negotiation not required)

Setting Notes

Select or deselect the BACKWARD_ANR_SW(BACKWARD_ANR_SW) option by referring to 11.1 When to Use Intra-RAT ANR.

Automatic Optimization of Neighbor Relationships with Cells Having Abnormal Intra-RAT Handover Success Rates

The following table describes the parameters that must be set in the ANR MO to set the No HO attribute set mode and the threshold for setting the No HO attribute. Parameter Name

Parameter ID

Data Source

Setting Notes

ANR.NoHoSetMode Network No Set this parameter by referring to 11.1 When to Handover plan Use Intra-RAT ANR. Set Mode (negotiation not required) ANR.NOHOSetThd Set not handover attribute threshold

Network Set this parameter by referring to 11.1 When to plan Use Intra-RAT ANR. (negotiation not required)

Intra-RAT Neighbor Relationship Classification

The following table describes the parameter that must be set in the CellAlgoSwitch MO to configure intra-RAT neighbor relationship classification. Parameter Name

Parameter ID

Data Source

Setting N

CellAlgoSwitch.NCellClassMgtSw Network Neighbor Select or deselect the following options by re Cell plan ANR: Classification (negotiation  INTRA_RAT_NCELL_CLASS_SW(INTR Mgt Switch not  NCELL_CLASS_PCI_CONFLICT_SW(N required)  EXTENDED_NCELL_MNG_SW(EXTEN

The following table describes the parameters that must be set in the NCellClassMgt MO to set the statistic period for neighbor relationship classification, handover attempt threshold, handover success threshold, threshold of configured SCells, and intra-RAT neighboring cell management mode. Parameter Name

Parameter ID

Data Source

Setting Notes

NCellClassMgt.StatPeriodForNCellClass Network Statistic Set this parameter by referring to 11.1 Period For plan Use Intra-RAT ANR. Neighbor (negotiation Cell not Classification required) Handover Attempt Threshold

NCellClassMgt.HoAttemptThd

Network Set this parameter by referring to 11.1 plan Use Intra-RAT ANR. (negotiation not required)

Handover Success Threshold

NCellClassMgt.HoSuccThd

Network Set this parameter by referring to 11.1 plan Use Intra-RAT ANR. (negotiation not required)

Threshold of SCell Configured

NCellClassMgt.CaSCellCfgThd

Network Set this parameter by referring to 11.1 plan Use Intra-RAT ANR. (negotiation not required)

Parameter Name

Parameter ID

Data Source

NCellClassMgt.IntraRatNcellMgtMode Intra-RAT Neighbor Cell Management Mode

Setting Notes

Network It is recommended that this paramete INTERNAL_STORAGE_MODE(Stora plan (negotiation not required)

Intra-RAT Blacklisted Neighbor Relationship Management

The following table describes the parameter that must be set in the CellAlgoSwitch MO to configure intra-RAT neighbor relationship classification. Parameter Name

Parameter ID

Data Source

Setting Notes

CellAlgoSwitch.NCellClassMgtSw Network Neighbor Select or deselect the INTRA_RAT_OVERDISTANCE_SW(INTRA Cell plan Classification (negotiation option by referring to 11.1 When to Use Intra Mgt Switch not required)

The following table describes the parameters that must be set in the NCellParaCfg MO to configure the handover statistics threshold, handover success threshold, and neighbor cell over distance threshold. Parameter Name

Parameter ID

Data Source

Setting Notes

Handover NCellParaCfg.HoStatThd Statistic Threshold

Network Set this parameter by referring to plan 11.1 When to Use Intra-RAT ANR. (negotiation not required)

Handover NCellParaCfg.HoSuccThd Success Rat Threshold

Network Set this parameter by referring to plan 11.1 When to Use Intra-RAT ANR. (negotiation not required)

Neighbor Cell

NCellParaCfg.NCellOdDisThd Network Set this parameter by referring to plan 11.1 When to Use Intra-RAT ANR. (negotiation

Parameter Name

Parameter ID

Distance Thld

Data Source

Setting Notes

not required)

Intra-RAT ANR with Shared Cells

The following table describes the parameter that must be set in a Cell MO to specify whether the serving frequency of the local cell is shared by operators. Parameter Name

Parameter ID

Data Source

Cell.IntraFreqRanSharingInd Network Intra Frequency plan RAN (negotiation Sharing not Indication required)

Setting Notes

The recommended value is BOOLEAN_TRUE(True) for the serving frequency if an intrafrequency neighboring cell is shared by operators, regardless of whether the cell broadcasts its PLMN list in an RR manner or not.

The following table describes the parameter that must be set in the EutranInterNFreq MO to specify whether a neighboring E-UTRA frequency is shared by operators. Parameter Name

Parameter ID

Data Source

EutranInterNFreq.InterFreqRanSharingInd Network Inter Frequency plan RAN (negotiation Sharing not Indication required)

Setting Notes

The recommended value is BOOLEAN_TRUE(True) for a neighboring EUTRA frequency if an inter-frequency neighboring cell on the frequency is shared by operators, regardless of whether the cell broadcasts its PLMN list in an RR manner or not.

The following table describes the parameter that must be set in the ENodeBAlgoSwitch MO to configure ANR with shared cells.

Parameter Name

Parameter ID

Data Source

Setting Notes

ENodeBAlgoSwitch.RanSharingAnrSwitch Network ANR Select or deselect the following options Under plan When to Use Intra-RAT ANR: RAN (negotiation  NBSLTEPLMNRoundSwitch(NBS Sharing not  NBSLTERANSharingSwitch(NBSL Algorithm required) Switch

NCL/NRT Self-Management Based on X2 Messages

The following table describes the parameter that must be set in the GlobalProcSwitch MO to configure "NCL/NRT self-management based on X2 messages". Parameter Name

Parameter ID

Data Source

Setting N

GlobalProcSwitch.X2BasedUptNcellCfgSwitch Network X2-based Select or deselect the following Neighboring plan 11.1 When to Use Intra-RAT A Cell (negotiation  ADD_NCELL_CFG_SW(A Configuration not  MOD_NCELL_CFG_SW(M Update required)  DEL_NCELL_CFG_SW(D Switch

PLMN ID Management

The following table describes the parameters that must be set in an NCellPlmnList MO to add a listed PLMN. Parameter Name

Parameter ID

Data Source

Setting Notes

Mobile Country Code

NCellPlmnList.Mcc

Network plan (negotiation not required)

This parameter specifies the MCC of a PLMN.

Mobile Network Code

NCellPlmnList.Mnc

Network plan (negotiation not required)

This parameter specifies the MNC of a PLMN.

Network plan (negotiation not required)

This parameter specifies the RAT of a PLMN.

Rat Type NCellPlmnList.RatType

Parameter Name

Parameter ID

Data Source

Setting Notes

Plmn List NCellPlmnList.PlmnListType Network plan Type (negotiation not required)

For invalid PLMNs reported by UEs, the value BLACK_LIST(BLACK_LIST) is recommended. For PLMNs near the local PLMN, the value GREY_LIST(GREY_LIST) is recommended.

HO Blacklist and HO Whitelist

The following table describes the parameters that must be set in the EutranIntraFreqNCell MO to configure the intra-frequency HO blacklist and the intra-frequency HO whitelist. Parameter Name

Parameter ID

EutranIntraFreqNCell.NoHoFlag No handover indicator

No remove indicator

Data Source

Network plan (negotiation not required)

EutranIntraFreqNCell.NoRmvFlag Network plan (negotiation not required)

Setting Notes 



Set this parameter to FORBID_HO_ENUM(Forbid Ho) when configuring an HO blacklist. Set this parameter to PERMIT_HO_ENUM(Permit Ho) when configuring an HO whitelist.

Set this parameter to FORBID_RMV_ENUM(Forbid ANR Remove) when configuring either an HO whitelist or an HO blacklist.

The following table describes the parameters that must be set in the EutranInterFreqNCell MO to configure the inter-frequency HO blacklist and the inter-frequency HO whitelist. Parameter Name

Parameter ID

EutranInterFreqNCell.NoHoFlag No handover indicator

Data Source

Network plan (negotiation

Setting Notes 

Set this parameter to FORBID_HO_ENUM(Forbid Ho) when configuring an HO blacklist.

Parameter Name

Parameter ID

Data Source

not required)

No remove indicator

EutranInterFreqNCell.NoRmvFlag Network plan (negotiation not required)

Setting Notes 

Set this parameter to PERMIT_HO_ENUM(Permit Ho) when configuring an HO whitelist.

Set this parameter to FORBID_RMV_ENUM(Forbid ANR Remove) when configuring either an HO whitelist or an HO blacklist.

RRC Blacklist

The following table describes the parameters that must be set in the IntraFreqBlkCell MO to configure the intra-frequency RRC blacklist. Parameter Name

Parameter ID

Data Source

Setting Notes

Local cell ID

IntraFreqBlkCell.LocalCellId Network plan (negotiation not required)

None

Start physical cell ID

IntraFreqBlkCell.PhyCellId

None

Network plan (negotiation not required)

The following table describes the parameters that must be set in the InterFreqBlkCell MO to configure the inter-frequency RRC blacklist. Parameter Name

Parameter ID

Data Source

Setting Notes

Local cell ID

InterFreqBlkCell.LocalCellId Network plan (negotiation not required)

None

Downlink EARFCN

InterFreqBlkCell.DlEarfcn

None

Network plan (negotiation not required)

Parameter Name

Parameter ID

Start physical InterFreqBlkCell.PhyCellId cell ID

Data Source

Network plan (negotiation not required)

Setting Notes

None

11.3.5.2 Using the CME For detailed operations, see CME-based Feature Configuration.

11.3.5.3 Using MML Commands Activating Frequency-specific Intra-RAT ANR Run the MOD CELL or MOD EUTRANINTERNFREQ command with the IntraFreq ANR Indication or ANR Indication parameter set to ALLOWED(ALLOWED). Activating Addition of NRT Entries in Intra-RAT Event-triggered ANR 1. Run the MOD ENODEBALGOSWITCH command with the IntraRatEventAnrSwitch(IntraRatEventAnrSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. (Optional) Activate addition of NRT entries in intra-RAT event-triggered ANR based on measurements excluding coverage-based handover measurements. Run the MOD ENODEBALGOSWITCH command with the following options of the ANR algorithm switch parameter selected. 

MlbBasedEventAnrSwitch(MlbBasedEventAnrSwitch)



ServiceBasedEventAnrSwitch(ServiceBasedEventAnrSwitch)



IntraRatEnhancedEventAnrSwitch(IntraRatEnhancedEventAnrSwitch)



CaBasedEventAnrSwitch(CaBasedEventAnrSwitch)



InterFreqAngcAnrSwitch(InterFreqAngcAnrSwitch)

4. Run the MOD ANR command with the Event ANR Mode parameter set to NOT_BASED_NCL(NOT_BASED_NCL). Activating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Intra-RAT ANR

1. Run the MOD ENODEBALGOSWITCH command with the IntraRatAnrAutoDelSwitch(IntraRatAnrAutoDelSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. Run the MOD ANR command with the Handover threshold for delete NRT parameter specified. 4. Run the MOD ANR command with the EUTRAN_DELCELLERRORNCELL(EUTRAN_DELCELLERRORNCELL) option of the NRT Delete Mode parameter selected. Deactivating Removal of Redundant Neighbor Relationships in Intra-RAT ANR 1. Run the MOD ANR command with the EUTRAN_DELREDUNDANCENCELL(EUTRAN_DELREDUNDANCENCELL) option of the NRT Delete Mode parameter deselected. Activating Penalty on Removed Neighbor Relationships with E-UTRAN Cells 1. Run the MOD ANR command with the Neighbor Cell Deletion Punish Period and EUTRAN Neighbor Cell Deletion Punish Number parameters specified. Activating Intra-RAT Fast ANR 1. Run the MOD ENODEBALGOSWITCH command with the IntraRatFastAnrSwitch(IntraRatFastAnrSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. Run the MOD ANR command with the Fast ANR PCI report amount parameter specified. Activating Intra-RAT Backward ANR 1. Run the MOD CELLALGOSWITCH command with the BACKWARD_ANR_SW(BACKWARD_ANR_SW) option of the ANR Algorithm Switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the ANR Function Switch parameter selected. Activating Automatic Optimization of Neighbor Relationships with Cells Having Abnormal Intra-RAT Handover Success Rates

1. Run the MOD ENODEBALGOSWITCH command with the IntraRatNoHoSetAnrSwitch(IntraRatNoHoSetAnrSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. Run the MOD ANR command with the No Handover Set Mode parameter set to PCI_CHECK(PCI_CHECK). 4. Run the MOD ANR command with the Set not handover attribute threshold parameter specified. Activating Intra-RAT Neighbor Relationship Classification 1. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_NCELL_CLASS_SW(INTRA_RAT_NCELL_CLASS_SW) option of the Neighbor Cell Classification Mgt Switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the NCELL_CLASS_PCI_CONFLICT_SW(NCELL_CLASS_PCI_CONFLICT_SW) option of the Neighbor Cell Classification Mgt Switch parameter selected. 3. If neighbor relationship classification in internal storage mode is required, run the MOD NCELLCLASSMGT command with the Intra-RAT Neighbor Cell Management Mode parameter set to INTERNAL_STORAGE_MODE(StorageMode). NOTE: When Intra-RAT Neighbor Cell Management Mode parameter set to INTERNAL_STORAGE_MODE(StorageMode), either of the following conditions must be met:  

The ANR.OptMode parameter is set to FREE(FREE). The ANR.OptMode parameter is set to CONTROLLED(CONTROLLED), and the EutranCtrlOptMode(EutranCtrlOptMode) option of the ANR.OptModeStrategy parameter is deselected.

4. (Optional) If the extended neighbor relationships need to be stored in the configuration database, run the MOD CELLALGOSWITCH command with the EXTENDED_NCELL_MNG_SW(EXTENDED_NCELL_MNG_SW) option of the Neighbor Cell Classification Mgt Switch parameter selected. Activating Intra-RAT Blacklisted Neighbor Relationship Management 1. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_OVERDISTANCE_SW(INTRA_RAT_OVERDISTANCE_SW) option of the ANR Algorithm Switch parameter selected. 2. (Optional) Run the MOD NCELLPARACFG command with the Neighbor Cell Distance Thld parameter set to 0. If this parameter is set to 0, the eNodeB determines whether a neighboring cell is over-distant based on the sum of the access radius of the serving cell and that of the neighboring cell.

NOTE: Intra-RAT blacklisted neighbor relationship management takes effect only when intra-RAT neighbor relationship classification is enabled and the intra-RAT neighbor relationship classification works in internal storage mode.

Activating Intra-RAT ANR with Shared Cells 1. Run the MOD CELL command with the Intra Frequency RAN Sharing Indication parameter set to BOOLEAN_TRUE(True). 2. Run the MOD EUTRANINTERNFREQ command with the Inter Frequency RAN Sharing Indication parameter set to BOOLEAN_TRUE(True). 

If a shared neighboring E-UTRAN cell broadcasts its PLMN list in an RR manner, run the MOD ENODEBALGOSWITCH command with the NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter selected.



If a shared neighboring E-UTRAN cell does not broadcast its PLMN list in an RR manner, run the MOD ENODEBALGOSWITCH command with the NBSLTERANSharingSwitch(NBSLTERANSharingSwitch) and NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) options of the ANR Under RAN Sharing Algorithm Switch parameter selected and deselected, respectively.

Activating NCL/NRT Self-Management Based on X2 Messages 1. Run the MOD GLOBALPROCSWITCH command with the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW) option of the X2-based Neighboring Cell Configuration Update Switch parameter deselected and the MOD_NCELL_CFG_SW(MOD_NCELL_CFG_SW) and DEL_NCELL_CFG_SW(DEL_NCELL_CFG_SW) options of the same parameter selected. Activating PLMN ID Management 1. Run the ADD NCELLPLMNLIST command to add a listed PLMN. Configuring HO Blacklists and HO Whitelists 1. Run the ADD EUTRANINTRAFREQNCELL and ADD EUTRANINTERFREQNCELL commands to configure intra-frequency and interfrequency HO blacklists/whitelists, respectively. To whitelist a cell, set the No handover indicator and No remove indicator parameters to PERMIT_HO_ENUM(Permit Ho) and FORBID_RMV_ENUM(Forbid ANR Remove), respectively. To blacklist a cell, set the No handover indicator and No remove indicator parameters to FORBID_HO_ENUM(Forbid Ho) and FORBID_RMV_ENUM(Forbid ANR Remove), respectively. Configuring RRC Blacklists

1. Run the ADD INTRAFREQBLKCELL command to configure the intra-frequency RRC blacklist. 2. Run the ADD INTERFREQBLKCELL command to configure the inter-frequency RRC blacklist.

11.3.5.4 MML Command Examples Activating Frequency-specific Intra-RAT ANR MOD CELL: LocalCellId=xx, IntraFreqAnrInd=ALLOWED; MOD EUTRANINTERNFREQ: LocalCellId=xx, DlEarfcn=xx, AnrInd=ALLOWED;

Activating Addition of NRT Entries in Intra-RAT Event-triggered ANR MOD ENODEBALGOSWITCH: AnrSwitch=IntraRatEventAnrSwitch-1; MOD CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTRA_RAT_ANR_SW-1; MOD ENODEBALGOSWITCH: AnrSwitch=MlbBasedEventAnrSwitch1&ServiceBasedEventAnrSwitch-1&IntraRatEnhancedEventAnrSwitch1&InterFreqAngcAnrSwitch-1&CaBasedEventAnrSwitch-1; MOD ANR: EventAnrMode=NOT_BASED_NCL;

Activating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Intra-RAT ANR MOD MOD MOD MOD

ENODEBALGOSWITCH: AnrSwitch=IntraRatAnrAutoDelSwitch-1; CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTRA_RAT_ANR_SW-1; ANR: NcellHoForNRTDelThd=xx; ANR: NrtDelMode=EUTRAN_DELCELLERRORNCELL-1;

Deactivating Removal of Redundant Neighbor Relationships in Intra-RAT ANR MOD ANR: NrtDelMode= EUTRAN_DELREDUNDANCENCELL-0;

Activating Penalty on Removed Neighbor Relationships with E-UTRAN Cells MOD ANR: NcellDelPunishPeriod=xx, EutranNcellDelPunNum=xx;

Activating Intra-RAT Fast ANR MOD ENODEBALGOSWITCH: AnrSwitch=IntraRatFastAnrSwitch-1; MOD CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTRA_RAT_ANR_SW-1; MOD ANR: FastAnrRprtAmount=r4;

Activating Intra-RAT Backward ANR MOD CELLALGOSWITCH: LocalCellId=xx, AnrAlgoSwitch=BACKWARD_ANR_SW-1;

Activating Automatic Optimization of Neighbor Relationships with Cells Having Abnormal Intra-RAT Handover Success Rates MOD MOD MOD MOD

ENODEBALGOSWITCH: AnrSwitch=IntraRatNoHoSetAnrSwitch-1; CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTRA_RAT_ANR_SW-1; ANR: NoHoSetMode=PCI_CHECK; ANR: NoHoSetThd=0;

Activating Intra-RAT Neighbor Relationship Classification

MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=INTRA_RAT_NCELL_CLASS_SW-1&NCELL_CLASS_HO_POLICY_SW0&NCELL_CLASS_PCI_CONFLICT_SW-1&EXTENDED_NCELL_MNG_SW-0; MOD NCELLCLASSMGT: IntraRatNcellMgtMode=INTERNAL_STORAGE_MODE & MOD ANR: OptMode=FREE or MOD ANR: OptMode=CONTROLLED, OptModeStrategy=EutranCtrlOptMode-0;

Activating Intra-RAT Blacklisted Neighbor Relationship Management MOD NCELLCLASSMGT: IntraRatNcellMgtMode=INTERNAL_STORAGE_MODE & MOD ANR: OptMode=FREE or MOD ANR: OptMode=CONTROLLED, OptModeStrategy=EutranCtrlOptMode-0; MOD CELLALGOSWITCH: LocalCellId=xx, INTRA_RAT_OVERDISTANCE_SW-1;

Activating Intra-RAT ANR with Shared Cells MOD CELL: LocalCellId=xx, IntraFreqRanSharingInd=BOOLEAN_TRUE; MOD EUTRANINTERNFREQ: LocalCellId=xx, DlEarfcn=xx, InterFreqRanSharingInd=BOOLEAN_TRUE; (A shared neighboring E-UTRAN cell broadcasts its PLMN list in an RR manner.) MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSLTEPLMNRoundSwitch-1; (A shared neighboring E-UTRAN cell does not broadcast its PLMN list in an RR manner.) MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSLTEPLMNRoundSwitch0&NBSLTERANSharingSwitch-1;

Activating NCL/NRT Self-Management Based on X2 Messages MOD GLOBALPROCSWITCH: X2BasedUptNcellCfgSwitch=ADD_NCELL_CFG_SW1&MOD_NCELL_CFG_SW-1&DEL_NCELL_CFG_SW-1;

Activating PLMN ID Management ADD NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=EUTRAN, PlmnListType=BLACK_LIST; ADD NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=EUTRAN, PlmnListType=GREY_LIST;

Configuring HO Blacklists and HO Whitelists ADD EUTRANINTRAFREQNCELL: LocalCellId=0, Mcc="460", Mnc="00", CellId=0, NoHoFlag=FORBID_HO_ENUM, NoRmvFlag=FORBID_RMV_ENUM; ADD EUTRANINTRAFREQNCELL: LocalCellId=0, Mcc="460", Mnc="00", CellId=0, NoHoFlag=PERMIT_HO_ENUM, NoRmvFlag=FORBID_RMV_ENUM; ADD EUTRANINTERFREQNCELL: LocalCellId=0, Mcc="460", Mnc="00", CellId=0, NoHoFlag=FORBID_HO_ENUM, NoRmvFlag=FORBID_RMV_ENUM; ADD EUTRANINTERFREQNCELL: LocalCellId=0, Mcc="460", Mnc="00", CellId=0, NoHoFlag=PERMIT_HO_ENUM, NoRmvFlag=FORBID_RMV_ENUM;

eNodeBId=123, eNodeBId=123, eNodeBId=123, eNodeBId=123,

Configuring RRC Blacklists ADD INTRAFREQBLKCELL: LocalCellId=0, PhyCellId=1, PhyCellIdRange=n4; ADD INTERFREQBLKCELL: LocalCellId=0, DlEarfcn=0, PhyCellId=1, PhyCellIdRange=n4;

11.3.6 Activation Observation Addition and Removal of Intra-RAT NRT Entries 

Signaling tracing

To use signaling tracing to verify whether intra-RAT ANR has been activated, perform the following steps: 1. On the U2000 client, choose Monitor > Signaling Trace > Signaling Trace Management. 2. In the navigation tree on the left of the Signaling Trace Management tab page, doubleclick Uu Interface Trace under LTE > Application Layer. 3. Create and start a Uu interface tracing task. 4. Remove some neighbor relationships so that there are missing neighboring cells in the network. If a UE reports an ECGI during an intra-RAT handover to a missing neighboring cell as indicated in a traced message, intra-RAT ANR has been activated. Figure 11-3 shows an example of the tracing result. Figure 11-3 Uu tracing result for intra-RAT ANR observation

5. Check whether intra-RAT backward ANR takes effect. After the ECGI reading result is reported and the neighbor relationship of the source cell (cell A) with the target cell (cell B) is added in 4, cell A initiates an X2- or S1-based handover to cell B. After the handover completes, check the neighboring cell configuration in the cell B. If the neighbor relationship of cell B with cell A is added, backward ANR has been activated. 

SON logs on the U2000 client To use SON logs to verify whether this function has been activated, perform the following steps:

1. (Optional) Deliver optimization advice. This step is required when the Optimization Mode parameter is set to CONTROLLED(CONTROLLED). The advice selection operation varies depending on the advice type: 

Optimization advice of adding or removing neighbor relationships: On the U2000 client, choose SON > LTE ANR. In the Neighboring Cell Relationship to Be Handled pane of the Neighboring Cell Management tab page, select the optimization advice to be delivered.



Optimization advice on blind handover priorities: On the U2000 client, choose SON > LTE Blind Neighboring Cell Optimization. On the Parameter Optimization Advice tab page, select the optimization advice to be delivered.

2. On the U2000 client, choose SON > SON Log. 3. On the Query SON Log tab page, click LTE ANR Log in the Log Category drop-down list in the upper left corner. 4. In the Event Name area, select items such as Set ANR Switch, Add Neighboring Cell, Delete Neighboring Cell, Add External Cell, Delete External Cell, SET handover Blacklist & Whitelist, and Automatically Disable Handover one at a time to check different types of ANR operations. NOTE: If there are several SON-related operations at the same time and one of the operations is incorrectly executed all SON-related operations are rolled back. In this situation, only one error code is displayed in the SON log, and other failed operations have the same error code. 

LTE ANR management on the U2000 client To use the LTE ANR management function to view configured neighbor relationships, perform the following steps: 1. On the U2000 client, choose SON > LTE ANR. 2. In the Neighboring Cell area on the Neighboring Cell Management tab page, check all neighbor relationships of the specific source cell. The Creation Mode attribute indicates whether a neighbor relationship is added by ANR. NON-ANR indicates that the neighbor relationship is not added by ANR. ANR indicates that the neighbor relationship is added by ANR. This function can be used to view all configured neighbor relationships, even if the ANR feature is disabled.



MML commands To use MML commands to verify whether intra-RAT ANR has been activated, perform the following steps: 1. Run the LST EUTRANINTRAFREQNCELL and LST EUTRANINTERFREQNCELL commands to list the configurations of neighbor relationships with intra- and inter-frequency E-UTRAN cells, respectively. 2. In the command output, check the value of the ANR flag parameter.



If the value is True, the intra-RAT neighbor relationship is automatically configured by ANR.



If the value is False, the intra-RAT neighbor relationship is manually configured.

Automatic Optimization of Neighbor Relationships with Cells Having Abnormal Intra-RAT Handover Success Rates

To use SON logs to verify whether this function has been activated, perform the following steps: 1. On the U2000 client, choose SON > SON Log. 2. On the Query SON Log tab page, click LTE ANR Log in the Log Category drop-down list in the upper left corner. 3. In the Event Name area, select the item Automatically Disable Handover to check whether this function takes effect. Intra-RAT Neighbor Relationship Classification 

SON logs on the U2000 client

You can use SON logs to verify whether this function has been activated. To verify whether neighbor relationship classification in configuration mode has been activated, perform the following steps: 1. On the U2000 client, choose SON > SON Log. 2. On the Query SON Log tab page, click LTE Neighbor cell Classification Management Log in the Log Category drop-down list in the upper left corner. 3. Click Set Neighbor Cell Classified Identity in the Custom list under Event Name. Then click Query to query SON logs of neighbor relationship classification. To verify whether neighbor relationship classification in internal storage mode has been activated, perform the following steps: 1. On the U2000 client, choose SON > SON Log. 2. On the Query SON Log tab page, click LTE ANR Log in the Log Category drop-down list in the upper left corner. 3. Click Add Neighboring Cell and Delete Neighboring Cell in the Custom list under Event Name. Then click Query to query SON logs of neighbor relationship classification. To verify whether classification for extended neighbor relationships has been activated, perform the following step: 1. On the U2000 client, choose SON > LTE ANR > Neighboring Cell Management > Extended Neighbor Relationship. 

MML commands Run the LST EUTRANINTRAFREQNCELL or LST EUTRANINTERFREQNCELL to check the Neighbor Cell Classification Label parameter value in configuration mode. If

the parameter value for a neighboring cell is FORMAL(FORMAL) or EXTENDED(EXTENDED), this function has been activated. Run the DSP EUTRANEXTENDEDNCELL command to check the extended neighbor relationships in internal storage mode. Intra-RAT Blacklisted Neighbor Relationship Management 

SON logs on the U2000 client You can use SON logs to verify whether this function has been activated. To verify whether neighbor relationship classification in internal storage mode has been activated, perform the following steps: 1. On the U2000 client, choose SON > SON Log. 2. On the Query SON Log tab page, click LTE Neighbor cell Classification Management Log in the Log Category drop-down list in the upper left corner. 3. Click Set Neighbor Cell Classified Identity, Delete Black Neighbor Cell, and Reject Black Neighbor Cell Request in the Custom list under Event Name. Then click Query to query SON logs of neighbor relationship classification.



MML commands Run the LST EUTRANBLKNCELL to check the Neighbor Cell Classification Label parameter value in configuration mode. If the parameter value for a neighboring cell is FORMAL(FORMAL) or EXTENDED(EXTENDED), this function has been activated. Run the DSP EUTRANEXTENDEDNCELL command to query extended neighbor relationships with over-distant neighboring cells in internal storage mode.

Intra-RAT ANR with Shared Cells 

SON logs on the U2000 client To use SON logs to verify whether this function has been activated, perform the following steps: 1. On the U2000 client, choose SON > SON Log. 2. On the Query SON Log tab page, click LTE ANR Log in the Log Category drop-down list in the upper left corner. 3. In the Event Name area, select items such as Add External Cell and Delete External Cell to check ANR operation of adding or removing external-cell PLMN lists.



MML commands Run the LST EUTRANEXTERNALCELLPLMN command to list the external-cell PLMN lists.

NCL/NRT Self-Management Based on X2 Messages

To check whether NCL/NRT self-management based on X2 messages has been activated, perform the following steps: 1. Log in to the U2000 client, and choose Monitor > Signaling Trace > Signaling Trace Management. 2. In the navigation tree on the left of the Signaling Trace Management tab page, doubleclick X2 Interface Trace under LTE > Application Layer. 3. Create and start an X2 interface tracing task. 4. Check the tracing result. If the X2_SETUP_REQUEST message (as shown in Figure 11-4) or ENB_CONFIGURATION_UPDATE message (as shown in Figure 11-5) indicates that the local eNodeB sends its configurations to the peer eNodeB, which then updates the configuration based on the messages, this function has been activated. Figure 11-4 Example of X2_SETUP_REQUEST message

Figure 11-5 Example 1 of ENB_CONFIGURATION_UPDATE message

If the ENB_CONFIGURATION_UPDATE message (as shown in Figure 11-6) contains the IE Served Cell to Delete, the peer eNodeB removes the neighbor relationships with the removed cells. The NCL/NRT entry removal function has been activated. Figure 11-6 Example 2 of ENB_CONFIGURATION_UPDATE message

PLMN ID Management

To use MML commands to verify whether PLMN ID management has been activated, perform the following steps:

1. Run the LST EUTRANINTRAFREQNCELL or LST EUTRANINTERFREQNCELL command to check whether ANR adds neighbor relationships with cells of the relative PLMNs to the NRTs. If the Plmn List Type value set to BLACK_LIST(BLACK_LIST) for a PLMN, ANR does not add neighbor relationships with cells of the PLMN to NRTs. 2. Run the DSP EUTRANINTRAFREQNCELL, or DSP EUTRANINTERFREQNCELL to check the value of the Neighbor Cell Plmn Label parameter. If the Plmn List Type parameter is set to GREY_LIST(GREY_LIST) or WHITE_LIST(WHITE_LIST) for a PLMN, ANR adds neighbor relationships with cells of the PLMN to NRTs and specifies the PLMN type of the neighboring cell by setting the Neighbor Cell Plmn Label parameter. 

If the parameter value is WHITE(WHITE), the PLMN is valid.



If the parameter is BLACK(BLACK) or GREY(GREY), the PLMN is invalid.

HO Blacklists and HO Whitelists

To use SON logs to verify whether HO blacklists and HO whitelists has been activated, perform the following steps: 1. On the U2000 client, choose SON > SON Log. 2. On the Query SON Log tab page, click LTE ANR Log in the Log Category drop-down list in the upper left corner. 3. In the Event Name area, select the item SET handover Blacklist & Whitelist to check the ANR operation of configuring HO blacklists and whitelists. 4. The HO blacklist takes effect if the cells in the blacklist can be detected by UEs, no handovers to these cells are performed, and configuration data shows that the neighbor relationships with these cells cannot be removed automatically. The HO whitelist takes effect if the cells in the whitelist can be detected by UEs, handovers to these cells can be performed, and configuration data shows that the neighbor relationships with these cells cannot be removed automatically. NOTE: The SON logs under the item SET handover Blacklist & Whitelist record the modification of No remove indicator and No handover indicator by operators.

RRC Blacklist

To use signaling tracing to verify whether this function has been activated, perform the following steps: 1. Log in to the U2000 client, and choose Monitor > Signaling Trace > Signaling Trace Management. 2. In the navigation tree on the left of the Signaling Trace Management tab page, choose LTE > Application Layer > Uu Interface Trace. 3. Create and start a Uu interface tracing task.

4. Check the tracing result. The RRC blacklist is included in the SIB4, SIB5, and measurement objects. If the Uu messages include the RRC blacklist, this feature has been activated.

11.3.7 Reconfiguration None

11.3.8 Deactivation Table 11-2 lists the parameters involved in deactivating intra-RAT ANR. Table 11-2 Parameters for intra-RAT ANR MO

Parameter Group

Setting Notes

ENodeBAlgoSwitch AnrSwitch, RanSharingAnrSwitch

Deselect the following options of this parameter:  IntraRatEventAnrSwitch  IntraRatAnrAutoDelSwitch  IntraRatFastAnrSwitch  IntraRatAnrAutoDelSwitch  MlbBasedEventAnrSwitch  IntraRatNoHoSetAnrSwitch  ServiceBasedEventAnrSwitch  IntraRatEnhancedEventAnrSwitch  InterFreqAngcAnrSwitch  CaBasedEventAnrSwitch  NBSLTEPLMNRoundSwitch NBSLTERANSharingSwitch

CellAlgoSwitch

AnrSwitch

Deselect the BACKWARD_ANR_SW option.

CellAlgoSwitch

AnrFunctionSwitch

Deselect the INTRA_RAT_ANR_SW option.

CellAlgoSwitch

NCellClassMgtSw

Deselect the following options of this parameter:  INTRA_RAT_NCELL_CLASS_SW  NCELL_CLASS_HO_POLICY_SW  NCELL_CLASS_PCI_CONFLICT_SW EXTENDED_NCELL_MNG_SW

Cell

IntraFreqAnrInd

Set this parameter to NOT_ALLOWED.

Cell

IntraFreqRanSharingInd

Set this parameter to BOOLEAN_FALSE.

MO

Parameter Group

Setting Notes

EutranInterNFreq

AnrInd

Set this parameter to NOT_ALLOWED.

EutranInterNFreq

InterFreqRanSharingInd

Set this parameter to BOOLEAN_FALSE.

GlobalProcSwitch

X2BasedUptNcellCfgSwitch Deselect the following options of this parameter:  ADD_NCELL_CFG_SW  MOD_NCELL_CFG_SW  DEL_NCELL_CFG_SW

NCellPlmnList

MCC, MNC, RatType, PlmnListType

Remove the listed PLMNs.

NCellClassMgt

IntraRatNcellMgtMode

Set this parameter to CONFIGURATION_MODE.

Intra-RAT ANR can be deactivated by using the CME or MML commands.

11.3.8.1 Using the CME For detailed operations, see CME-based Feature Configuration.

11.3.8.2 Using MML Commands Deactivating Frequency-specific Intra-RAT ANR 

Run the MOD CELL command with the IntraFreq ANR Indication parameter set to NOT_ALLOWED(NOT_ALLOWED) to disable intra-RAT event-triggered ANR dedicated for the serving frequency.



Run the MOD EUTRANINTERNFREQ command with the ANR Indication parameter set to NOT_ALLOWED(NOT_ALLOWED) to disable intra-RAT event-triggered ANR dedicated for a neighboring E-UTRAN frequency.

Deactivating Addition of NRT Entries in Intra-RAT Event-triggered ANR 

Deactivating Addition of NRT Entries in Intra-RAT Event-triggered ANR based on Coverage-based Handover Measurements Run the MOD ENODEBALGOSWITCH command with the IntraRatEventAnrSwitch(IntraRatEventAnrSwitch) option of the ANR algorithm switch parameter deselected. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_ANR_SW(INTRA_RAT_ANR_SW) option of the ANR Function Switch parameter deselected.



Deactivating Addition of NRT Entries in Intra-RAT Event-triggered ANR based on Measurements Excluding Coverage-based Handover Measurements

Run the MOD ENODEBALGOSWITCH command with the IntraRatEventAnrSwitch(IntraRatEventAnrSwitch) option and the following options of the ANR algorithm switch parameter deselected. 

MlbBasedEventAnrSwitch(MlbBasedEventAnrSwitch)



ServiceBasedEventAnrSwitch(ServiceBasedEventAnrSwitch)



IntraRatEnhancedEventAnrSwitch(IntraRatEnhancedEventAnrSwitch)



CaBasedEventAnrSwitch(CaBasedEventAnrSwitch)



InterFreqAngcAnrSwitch(InterFreqAngcAnrSwitch)

Deactivating Intra-RAT Double-Threshold-based ANR Run the MOD ENODEBALGOSWITCH command with the IntraRatDoubleThdAnrSwitch(IntraRatDoubleThdAnrSwitch) option of the ANR algorithm switch parameter deselected. Deactivating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Intra-RAT ANR Run the MOD ENODEBALGOSWITCH command with the IntraRatAnrAutoDelSwitch(IntraRatAnrAutoDelSwitch) option of the ANR algorithm switch parameter deselected. Deactivating Penalty on Removed Neighbor Relationships with E-UTRAN Cells Run the MOD ANR command with the EUTRAN Neighbor Cell Deletion Punish Number parameter set to 0. Deactivating Intra-RAT Fast ANR Run the MOD ENODEBALGOSWITCH command with the IntraRatFastAnrSwitch(IntraRatFastAnrSwitch) option of the ANR algorithm switch parameter deselected. Deactivating Intra-RAT Backward ANR Run the MOD CELLALGOSWITCH command with the BACKWARD_ANR_SW(BACKWARD_ANR_SW) option of the ANR Algorithm Switch parameter deselected. Deactivating Automatic Optimization of Neighbor Relationships with Cells Having Abnormal Intra-RAT Handover Success Rates Run the MOD ENODEBALGOSWITCH command with the IntraRatNoHoSetAnrSwitch(IntraRatNoHoSetAnrSwitch) option of the ANR algorithm switch parameter deselected. Deactivating Intra-RAT Neighbor Relationship Classification 1. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_NCELL_CLASS_SW(INTRA_RAT_NCELL_CLASS_SW), NCELL_CLASS_HO_POLICY_SW(NCELL_CLASS_HO_POLICY_SW), and

NCELL_CLASS_PCI_CONFLICT_SW(NCELL_CLASS_PCI_CONFLICT_SW) options of the Neighbor Cell Classification Mgt Switch parameter deselected. Deactivating Intra-RAT Blacklisted Neighbor Relationship Management 1. Run the MOD CELLALGOSWITCH command with the INTRA_RAT_OVERDISTANCE_SW(INTRA_RAT_OVERDISTANCE_SW) option of the ANR Algorithm Switch parameter deselected. Deactivating Intra-RAT ANR with Shared Cells 1. Run the MOD ENODEBALGOSWITCH command with the NBSLTEPLMNRoundSwitch(NBSLTEPLMNRoundSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter deselected. 2. Run the MOD ENODEBALGOSWITCH command with the NBSLTERANSharingSwitch(NBSLTERANSharingSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter deselected. 3. To only disable ANR with shared cells on the serving frequency, run the MOD CELL command with the Intra Frequency RAN Sharing Indication parameter set to BOOLEAN_FALSE(False). 4. To only disable ANR with shared cells on a neighboring E-UTRAN frequency, run the MOD EUTRANINTERNFREQ command with the Inter Frequency RAN Sharing Indication parameter set to BOOLEAN_FALSE(False). Deactivating NCL/NRT Self-Management Based on X2 Messages Run the MOD GLOBALPROCSWITCH command with the ADD_NCELL_CFG_SW(ADD_NCELL_CFG_SW), MOD_NCELL_CFG_SW(MOD_NCELL_CFG_SW), and DEL_NCELL_CFG_SW(DEL_NCELL_CFG_SW) options of the X2-based Neighboring Cell Configuration Update Switch parameter deselected. Deactivating PLMN ID Management Run the RMV NCELLPLMNLIST command to remove a listed PLMN.

11.3.8.3 MML Command Examples Deactivating Frequency-specific Intra-RAT ANR MOD CELL: LocalCellId=xx, IntraFreqAnrInd=NOT_ALLOWED; MOD EUTRANINTERNFREQ: LocalCellId=xx, DlEarfcn=xx, AnrInd=NOT_ALLOWED;

Deactivating Addition of NRT Entries in Intra-RAT Event-triggered ANR MOD ENODEBALGOSWITCH: AnrSwitch=IntraRatEventAnrSwitch-0; MOD CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTRA_RAT_ANR_SW-0; MOD ENODEBALGOSWITCH: AnrSwitch=MlbBasedEventAnrSwitch0&ServiceBasedEventAnrSwitch-0&IntraRatEnhancedEventAnrSwitch0&InterFreqAngcAnrSwitch-0&CaBasedEventAnrSwitch-0;

Deactivating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Intra-RAT ANR

MOD ENODEBALGOSWITCH: AnrSwitch=IntraRatAnrAutoDelSwitch-0;

Deactivating Removal of Redundant Neighbor Relationships in Intra-RAT ANR MOD ANR: NrtDelMode=EUTRAN_DELREDUNDANCENCELL-0;

Deactivating Penalty on Removed Neighbor Relationships with E-UTRAN Cells MOD ANR: EutranNcellDelPunNum=1;

Deactivating Intra-RAT Fast ANR MOD ENODEBALGOSWITCH: AnrSwitch=IntraRatFastAnrSwitch-0;

Deactivating Intra-RAT Backward ANR MOD CELLALGOSWITCH: LocalCellId=xx, AnrAlgoSwitch=BACKWARD_ANR_SW-0;

Deactivating Automatic Optimization of Neighbor Relationships with Cells Having Abnormal Intra-RAT Handover Success Rates MOD ENODEBALGOSWITCH: AnrSwitch=IntraRatNoHoSetAnrSwitch-0;

Deactivating Intra-RAT Neighbor Relationship Classification MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=INTRA_RAT_NCELL_CLASS_SW-0&NCELL_CLASS_HO_POLICY_SW0&NCELL_CLASS_PCI_CONFLICT_SW-0;

Deactivating Intra-RAT Blacklisted Neighbor Relationship Management MOD CELLALGOSWITCH: LocalCellId=xx, INTRA_RAT_OVERDISTANCE_SW-0;

Deactivating Intra-RAT ANR with Shared Cells MOD CELL: LocalCellId=xx, IntraFreqRanSharingInd=BOOLEAN_FALSE; MOD EUTRANINTERNFREQ: LocalCellId=xx, DlEarfcn=xx, InterFreqRanSharingInd=BOOLEAN_FALSE; (A shared neighboring E-UTRAN cell broadcasts its PLMN list in an RR manner.) MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSLTEPLMNRoundSwitch-0; (A shared neighboring E-UTRAN cell does not broadcast its PLMN list in an RR manner.) MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSLTERANSharingSwitch-0;

Deactivating NCL/NRT Self-Management Based on X2 Messages MOD GLOBALPROCSWITCH: X2BasedUptNcellCfgSwitch=ADD_NCELL_CFG_SW0&MOD_NCELL_CFG_SW-0&DEL_NCELL_CFG_SW-0;

Deactivating PLMN ID Management RMV NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=xx; RMV NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=xx;

11.4 Performance Monitoring Using intra-RAT ANR decreases the probability that the configurations of neighboring cells are missing or incorrect, thereby increasing the intra-RAT handover success rate and decreasing the service drop rate. To monitor the performance of intra-RAT ANR, you can check the performance counters related to handovers and service drops.

The handover performance counters listed in Table 11-3 can reflect the network performance after intra-RAT ANR is enabled. As intra-RAT neighbor relationships are configured, the values of these counters decrease. Neighbor relationship classification can reduce repeated addition and removal of neighboring cells. When neighboring cell management in PCI confusion scenarios takes effect, the number of times UEs read CGIs when PCI confusion occurs is reduced. The CGI-related performance counters listed in Table 11-3 can reflect the network performance after intra-RAT ANR is enabled. Table 11-3 Counters related to intra-RAT ANR Counter ID

Counter Name

Counter Description

1526728398

L.IntraFreqHO.NoNRT

Number of intra-frequency handover initiation failures due to the target cell not being configured as a neighboring cell for the source cell

1526728399

L.InterFreqHO.NoNRT

Number of inter-frequency handover initiation failures due to the target cell not being configured as a neighboring cell for the source cell

1526741657

L.IntraRat.CgiReadAtt

Number of attempts to read CGIs for intraRAT neighboring cells of a cell

1526741658

L.IntraRat.CgiReadSucc

Number of successful attempts to read CGIs for intra-RAT neighboring cells of a cell

NCL/NRT self-management based on X2 messages decreases the probability of missing or incorrect neighbor relationship configurations. This increases the handover success rate and decreases the service drop rate. To monitor the self-management performance, check the performance counters related to handovers and service drops. After blacklisted neighbor relationship management is enabled, the handover-related KPIs will improve because the number of handovers to over-distant neighboring cells decreases. Collect the performance counters listed in the following table. Then, use the following formula to calculate the service drop rate: Service Drop Rate = L.E-RAB.AbnormRel/(L.E-RAB.NormRel + L.E-RAB.AbnormRel) x 100% Counter ID

1526726995

Counter Name

L.HHO.IntraeNB.IntraFreq.PrepAttOut

Counter Description

Number of intra-eNodeB intra-frequency outgoing handover attempts in a cell

Counter ID

Counter Name

Counter Description

1526726996

L.HHO.IntraeNB.IntraFreq.ExecAttOut

1526726997

L.HHO.IntraeNB.IntraFreq.ExecSuccOut Number of successful intraeNodeB intra-frequency outgoing handovers in a cell

1526727001

L.HHO.IntereNB.IntraFreq.PrepAttOut

Number of inter-eNodeB intra-frequency outgoing handover attempts in a cell

1526727002

L.HHO.IntereNB.IntraFreq.ExecAttOut

Number of inter-eNodeB intra-frequency outgoing handover executions in a cell

1526727003

L.HHO.IntereNB.IntraFreq.ExecSuccOut Number of successful intereNodeB intra-frequency outgoing handovers in a cell

1526726998

L.HHO.IntraeNB.InterFreq.PrepAttOut

Number of intra-eNodeB inter-frequency outgoing handover attempts in a cell

1526726999

L.HHO.IntraeNB.InterFreq.ExecAttOut

Number of intra-eNodeB inter-frequency outgoing handover executions in a cell

1526727000

L.HHO.IntraeNB.InterFreq.ExecSuccOut Number of successful intraeNodeB inter-frequency outgoing handovers in a cell

1526727004

L.HHO.IntereNB.InterFreq.PrepAttOut

Number of inter-eNodeB inter-frequency outgoing handover attempts in a cell

1526727005

L.HHO.IntereNB.InterFreq.ExecAttOut

Number of inter-eNodeB inter-frequency outgoing handover executions in a cell

Number of intra-eNodeB intra-frequency outgoing handover executions in a cell

Counter ID

Counter Name

Counter Description

1526727006

L.HHO.IntereNB.InterFreq.ExecSuccOut Number of successful intereNodeB inter-frequency outgoing handovers in a cell

1526727546

L.E-RAB.AbnormRel

Total number of abnormal releases of activated ERABs initiated by the eNodeB in a cell

1526727547

L.E-RAB.NormRel

Total number of normal ERAB releases initiated by the eNodeB in a cell

11.5 Parameter Optimization The following parameters may need to be modified after intra-RAT ANR is activated. Table 11-4 ANR-related parameters Parameter Name

Parameter ID

ANR.DelCellThd ANR delete cell threshold

Least Handover Num for Statistic

ANR.NcellHoStatNum

Statistic cycle ANR.StatisticPeriod

Statistic Number For Delete NRT

ANR.StatisticNumForNRTDel

Setting Notes

A larger value of this parameter results in a higher probability of removing neighbor relationships from NRTs. A larger value of this parameter results in more stable neighbor relationships in NRTs but a longer delay in removing neighbor relationships from NRTs. If only a few UEs are involved in ANR measurements on the live network, reduce the value of this parameter to accelerate NRT updates. A larger value of this parameter results in more accurate neighbor relationships added to NRTs but a longer delay in updating NRTs. A larger value of this parameter results in a lower probability of

Parameter Name

Parameter ID

Setting Notes

removing neighbor relationships from NRTs. Statistic Cycle For Delete NRT

ANR.StatisticPeriodForNRTDel

A larger value of this parameter results in a lower probability of removing neighbor relationships from NRTs.

Statistic Cycle Coefficient

ANR.StatPeriodCoeff

A larger value of this parameter results in a longer time to remove a redundant neighbor relationship from the NRT.

Fast ANR PCI report amount

ANR.FastAnrRprtAmount

If only a few UEs are involved in periodic measurements, increase the value of this parameter. Otherwise, reduce it.

Fast ANR PCI report interval

ANR.FastAnrRprtInterval

If UEs move in the high mobility state, reduce the value of this parameter. Otherwise, increase it.

Fast ANR checking period

ANR.FastAnrCheckPeriod

If only a few UEs are involved in periodic measurements, increase the value of this parameter. Otherwise, reduce it.

ANR.FastAnrRsrpThd Fast ANR measurement RSRP threshold

IntraRat Fast ANR

ANR.FastAnrIntraRatMeasUeNum

A larger value of this parameter results in a higher RSRP requirement and therefore higher RSRP of the neighboring cells in the NCL.  In densely populated urban areas, increase the value of this parameter to reduce the probability of adding neighboring cells with low RSRP to the NCL.  In sparsely populated areas, reduce the value of this parameter to increase the probability of adding neighboring cells with low RSRP to the NCL. A larger value of this parameter results in more accurate NCL/NRT

Parameter Name

Parameter ID

Setting Notes

measurement UE number

entry addition but a greater negative impact on quality of service and network throughput.

IntraRat Fast ANR.FastAnrIntraRatUeNumThd ANR valid measurement min UE number

A larger value of this parameter results in more accurate NCL/NRT entry addition but a greater negative impact on quality of service and network throughput.

ANR.FastAnrMode

This parameter specifies whether fast ANR adds detected cells only to the NCL or to both the NCL and NRTs.  To allow fast ANR to add detected cells only to the NCL, set this parameter to NCL_MODE(NCL Mode).  To allow fast ANR to add detected cells to the NCL and add the neighbor relationship with the strongest detected cell to an NRT, set this parameter to NCL_NRT_MODE(NCL and NRT Mode).  To allow fast ANR to add detected cells to an NCL and NRT based on the CGI reading results, set this parameter to NRT_MODE(NRT_MODE). Currently, fast ANR adds only the neighbor relationships with the strongest inter-frequency, UTRAN, and GERAN cells to NRTs. It does not add the neighbor relationships with the strongest intra-frequency or CDMA2000 cells to NRTs. The NCL mode always takes effect for the detected intra-frequency and CDMA2000 cells, irrespective of the parameter setting.

Fast ANR Mode

Parameter Name

Parameter ID

Setting Notes

Set not handover attribute threshold

ANR.NOHOSetThd

This parameter specifies the threshold for the success rate of handovers from the local cell to a neighboring cell. If the success rate is lower than or equal to the threshold, ANR automatically sets the No handover indicator parameter of the neighbor relationship to prohibit handovers. A larger value of this parameter results in a higher probability of setting the No handover indicator parameter to FORBID_HO_ENUM(Forbid Ho). A smaller value of this parameter results in a lower probability. If the ANR.NoHoSetMode parameter is set to PCI_CHECK(PCI_CHECK), it is recommended that the ANR.NOHOSetThd parameter be set to a value less than 80.

Handover Success Rate for CGI Reading

ANR.HoSucRateForCgiRead

This parameter specifies the handover success rate threshold for triggering CGI reading. If the success rate of handovers to a neighboring cell is less than or equal to the parameter value, the eNodeB instructs UEs to perform CGI reading for automatic setting the No handover indicator parameter value for the neighboring cell. A larger value of this parameter results in a lower probability of triggering CGI reading based on the handover success rate.

CA UE Chose Mode

ANR.CaUeChoseMode

This parameter specifies the policy based on which the eNodeB selects CA UEs to perform ANR measurements.  If there are few CA UEs in the network, the recommended value is

Parameter Name

Parameter ID

Setting Notes





ANR Frequency Priority

Cell.FreqPriorityForAnr EutranInterNFreq.FreqPriorityForAnr

Neighbouring NCellParaCfg.NcellNumForAnr Cell Number EutranInterNFreq.NcellNumForAnr for ANR

CA_UE_CARRIER_NUM(CA UE Carrier Number). If there are a large number of CA UEs in the network, the recommended value is ANR_UE_CAP(ANR UE Capability). It is not recommended that this parameter be set to ANR_UE_CAP(ANR UE Capability). This is because this value presents a strict UE selection condition, affecting the efficiency of ANR.

This parameter specifies the priority for an E-UTRAN frequency for priority-based removal when the number of neighbor relationships reaches its maximum.  A smaller value of this parameter indicates a lower priority and a higher probability of removing neighbor relationships with cells on this E-UTRAN frequency.  A larger value of this parameter results in the opposite effects. This parameter specifies the minimum number of intra-RAT intra-frequency neighboring cells.  A smaller value results in a smaller number of neighboring cells on this frequency.  A larger value results in a larger number of neighboring cells on this frequency.

Parameter Name

Smart Preallocation Mode

Parameter ID

ANR.SmartPreallocationMode

Setting Notes

This parameter specifies whether to enable smart preallocation during CGI reading.  If this parameter is set to ENABLE(Enable), smart preallocation takes effect during CGI reading when smart preallocation is enabled. In this case, uplink scheduling delay becomes shorter but the DRX sleep time that UEs stay becomes shorter, decreasing the success rate of CGI reading. In addition, in PCI confusion scenarios, the service drop rate may increase.  If this parameter is set to DISABLE(Disable), smart preallocation does not take effect during CGI reading even when smart preallocation is enabled. In this case, uplink scheduling delay becomes longer but the DRX sleep time that UEs stay becomes longer, increasing the success rate of CGI reading. In addition, in PCI confusion scenarios, the service drop rate may decrease.

Update eNB GlobalProcSwitch.X2BasedUptENodeBPolicy You are advised to set the FreqAddCtrl(FreqAddCtrl) Configuration Via X2 Policy option based on the operator's frequency configuration policy. If an eNodeB adds neighboring frequencies based on X2 messages, select the FreqAddCtrl(FreqAddCtrl) option only if you intend to enable the eNodeB to filter frequencies based on operator information. Statistic Period For

NCellClassMgt.StatPeriodForNCellClass

A larger value of this parameter results in higher stability of the

Parameter Name

Parameter ID

Neighbor Cell Classification

Setting Notes

neighbor relationship classification label status but lower timeliness of the classification results. A smaller value of this parameter results in lower stability of both the neighbor relationship classification label status and the neighbor relationship classification algorithm.

Table 11-5 DRX-related parameters Parameter Name

Parameter ID

Setting Notes

Long DRX Cycle for ANR

CellDrxSpecialPara.LongDrxCycleForIntraRatAnr This parameter specifies the long DRX cycle for intra-RAT ANR. A larger value of this parameter results in a longer duration for UEs to perform CGI reading and a longer system delay. To ensure the CGI reading success rate, you are advised to set the long DRX cycle to a time greater than or equal to 256 ms.

DRX Inactivity Timer For ANR

CellDrxSpecialPara.FddAnrDrxInactivityTimer



A smaller value of this parameter results in a longer DRX sleep time for UEs during CGI reading, a higher CGI reading success rate, a longer delay

Parameter Name

Parameter ID

Setting Notes



of data scheduling. A larger value of this parameter results in the opposite effects.

Table 11-6 Parameters related to measurement gaps Parameter Name

Parameter ID

Setting Notes

GlobalProcSwitch.VoipWithGapMode This parameter specifies whether a UE VoIP With Gap running VoIP services can set up Mode measurement gaps to perform periodic measurements. If a UE initiates VoIP services and sets up bearers with QCI1 after being selected to perform fast ANR measurements, the eNodeB takes different actions on the measurement configuration delivered to the UE depending on the setting of the EnodeBAlgoSwitch.VoipWithGapMode parameter.  If this parameter is set to ENABLE(enable), the eNodeB does not delete the fast-ANR-related measurement configuration.  If this parameter is set to DISABLE(disable), the eNodeB delivers the RRC measurement reconfiguration to the UE and deletes the fast-ANR-related measurement configuration.

11.6 Troubleshooting Fault Description 1

An intra- or inter-frequency handover fails. Fault Handling 1

To check whether this handover failure is caused by an incorrect neighbor relationship configuration, perform the following steps:

1. On the U2000 client, start a Uu interface tracing task for the source cell. Choose Monitor > Signaling Trace > Signaling Trace Management. In the navigation tree on the left of the Signaling Trace Management tab page, double-click Uu Interface Trace under LTE > Application Layer. Create and start a Uu interface tracing task. 2. In the tracing result, check whether the source eNodeB has delivered a handover command. A handover command was delivered if the RRC_CONN_RECFG message contains the IE mobilityControlInfo. 

If the eNodeB has not delivered the handover command, go to 3.



If the eNodeB has delivered the handover command, contact Huawei technical support.

3. Run the LST EUTRANEXTERNALCELL command to check whether the target cell has been configured as an external cell on the source eNodeB. Run the LST EUTRANINTRAFREQNCELL or LST EUTRANINTERFREQNCELL command to check whether the intra- or inter-frequency neighbor relationship between the source and target cells has been configured on the source cell. 

If they have not been configured, go to 4.



If they have been configured, contact Huawei technical support. NOTE: In RAN sharing with common carriers mode, if the UE subscribes to a secondary operator, query the EutranExternalCellPlmn MO to check whether the PLMN list has been configured. Configure the PLMN list if it has not been configured.

4. Check whether the switch for intra-RAT event-triggered ANR has been set to on. 

If the switch is off, set it to on.



If the switch is on, go to 5.

5. Check whether the UE supports intra-RAT ANR. For details, see 3.4 Requirements of UEs for ANR. 

If the UE supports intra-RAT ANR, contact Huawei technical support.



If the UE does not support intra-RAT ANR, no further action is required.

Fault Description 2

When an E-UTRAN cell is shared by operators, a UE that subscribes to a secondary operator experiences a failure of an intra-RAT handover to the cell. Fault Handling 2

To check whether this handover failure is caused by an incorrect neighbor relationship configuration, perform the following steps:

1. On the U2000 client, start a Uu interface tracing task for the source cell. a. Choose Monitor > Signaling Trace > Signaling Trace Management. b. In the navigation tree on the left of the Signaling Trace Management tab page, double-click Uu Interface Trace under LTE > Application Layer. Create and start a Uu interface tracing task. 2. In the tracing result, check whether the source eNodeB has delivered a handover command. A handover command was delivered if the RRC_CONN_RECFG message contains the IE mobilityControlInfo. 

If the eNodeB has not delivered the handover command, go to 3.



If the eNodeB has delivered the handover command, contact Huawei technical support.

3. Run the LST EUTRANEXTERNALCELL command to check whether the target cell has been configured as an external cell on the source eNodeB. Run the LST EUTRANINTRAFREQNCELL or LST EUTRANINTERFREQNCELL command to check whether the intra- or inter-frequency neighbor relationship between the source and target cells has been configured on the source cell. Run the LST EUTRANEXTERNALCELLPLMN command to check whether the PLMN list has been configured for the external cell. 

If they have not been configured, go to 4.



If they have been configured, contact Huawei technical support.

4. Check whether the source and target eNodeBs are managed by the same U2000. 

If they are managed by the same U2000, go to 5.



If they are not managed by the same U2000, contact Huawei technical support.

5. Check whether the switch for intra-RAT event-triggered ANR and the switch for ANR with shared cells have been set to on. 

If the switches are off, set them to on.



If the switch is on, go to 6.

6. Check whether the UE supports intra-RAT ANR. 

If the UE supports intra-RAT ANR, contact Huawei technical support.



If the UE does not support intra-RAT ANR, no further action is required.

Fault Description 3

NCL/NRT entries cannot be added, updated, or removed based on X2 messages. Fault Handling 3

To handle the fault, perform the following steps:

1. Run the LST GLOBALPROCSWITCH command to check the switch settings. If NCL/NRT entries cannot be added or updated, check the setting of the Update eNB Configuration Via X2 Switch parameter. If NCL/NRT entries cannot be removed, check the settings of the Update eNB Configuration Via X2 Switch and Delete Ncell Configuration Via X2 Switch parameters. 

If a value is Off, set the parameter to ON(On).



If the values are On, go to 2.

2. On the U2000 client, choose Monitor > Signaling Trace > Signaling Trace Management. In the navigation tree on the left of the Signaling Trace Management tab page, double-click X2 Interface Trace under LTE > Application Layer. Create and start an X2 interface tracing task for the source cell. 3. Modify or remove the configuration of a cell served by an eNodeB. Check the tracing result to determine whether the eNodeB has sent an ENB CONFIGURATION UPDATE message to inform the peer eNodeB of the change. 

If the eNodeB has sent the message, contact Huawei technical support.



If the eNodeB did not send the message, go to 4.

4. Run the DSP X2INTERFACE command to check whether the X2 interface is configured and works normally. 

If the X2 interface is normal, contact Huawei technical support.



If the X2 interface is abnormal, see S1 and X2 Self-Management Feature Parameter Description for details about how to handle the fault.

Fault Description 4

The result of the LST EUTRANINTRAFREQNCELL or LST EUTRANINTERFREQNCELL command shows configured neighbor relationships. However, the result of the DSP EUTRANINTRAFREQNCELL or DSP EUTRANINTERFREQNCELL command does not show any configured neighbor relationship, respectively. Fault Handling 4

Perform the following steps for troubleshooting: 1. Run the LST EUTRANINTRAFREQNCELL or LST EUTRANINTERFREQNCELL to check the Neighbor Cell Classification Label parameter value. 2. If the Neighbor Cell Classification Label parameter value for a neighboring cell in the result is EXTENDED(EXTENDED), then you must set the Neighbor Cell Classification Flag parameter to EXTENDED(EXTENDED) or ALL(ALL) when running the DSP EUTRANINTRAFREQNCELL command to query the information of the neighboring cell. If the Neighbor Cell Classification Label parameter value for a neighboring cell in

the result is FORMAL(FORMAL), then you must set the Neighbor Cell Classification Flag parameter to FORMAL(FORMAL) or ALL(ALL) when running the DSP EUTRANINTRAFREQNCELL command to query the information of the neighboring cell. Run the DSP EUTRANINTRAFREQNCELL or DSP EUTRANINTERFREQNCELL command, the information of neighboring cells for which the Neighbor Cell Classification Label parameter is set to FORMAL(FORMAL) is displayed. Fault Description 5

There is a neighbor relationship with a cell of an invalid PLMN in an intra-RAT NRT, causing handover failures. Fault Handling 5

Perform the following steps for troubleshooting: 1. Check the SON logs to verify whether such a neighbor relationship is added by ANR. If yes, UEs report invalid PLMN. 2. Set the Plmn List Type parameter in the NCellPlmnList MO to BLACK_LIST(BLACK_LIST) for the PLMN. 3. Manually remove such a neighbor relationship from the NRT or use the ANR function to remove it.

12

Engineering Guidelines for Inter-RAT ANR

This chapter describes how to deploy inter-RAT ANR.

12.1 When to Use Inter-RAT ANR Inter-RAT ANR includes the following sub-functions: 

Inter-RAT event-triggered ANR



Inter-RAT fast ANR



Inter-RAT neighbor relationship classification



Inter-RAT ANR with shared cells



Automatic optimization of blind handover priorities for inter-RAT neighbor relationships



Automatic optimization of measurement priorities for inter-RAT neighbor relationships



PLMN ID management

It is recommended that these sub-functions be used together. The following describes when to use inter-RAT ANR in different stages of network deployment. ANR does not support addition of neighboring cells with extended RNC IDs. In other words, it is recommended that ANR be disabled for cells that have a neighboring UTRAN cell whose RNC ID is greater than 4095 and cell ID is smaller than 4096. For details, see 3GPP TS 25.401 V10.2.0. eNodeB Deployment

It is recommended that the following functions be enabled during eNodeB deployment. Enable other functions according to operators' policies. 

Inter-RAT event-triggered ANR It is recommended that removal of redundant neighbor relationships with inter-RAT cells be disabled. Otherwise, neighbor relationships may be unexpectedly removed because the number of UEs in handovers is small.



(Optional) Inter-RAT fast ANR It is recommended that inter-RAT fast ANR be enabled only when the network serves a small number of commercial UEs or engineering optimization (for example, downtilt adjustment and power adjustment) does not finish. It is recommended that this sub-function be disabled when the network serves a large number of commercial UEs and engineering optimization finishes.



Inter-RAT neighbor relationship classification It is recommended that the UTRAN_NCELL_CLASS_SW(UTRAN_NCELL_CLASS_SW) and GERAN_NCELL_CLASS_SW(GERAN_NCELL_CLASS_SW) options of the Neighbor Cell Classification Mgt Switch parameter be selected and the UTRAN_OVERDISTANCE_SW(TRAN_OVERDISTANCE_SW) option of the ANR Algorithm Switch parameter be selected. This setting identifies over-distant neighboring cells to which UEs are seldom handed over or that have low handover success rates so that the eNodeB applies differentiated handling of these neighboring cells to reduce the number of handovers to over-distant neighboring cells.



(Optional) Inter-RAT ANR with shared cells It is recommended that ANR with shared UTRAN cells be enabled if both of the following conditions are met: 

Neighboring UTRAN cells are shared by operators.



The serving and neighboring cells are managed by the same U2000, or the configuration data of the neighboring cells has been imported to the U2000 that manages the serving cell.

It is recommended that ANR with shared GERAN cells be enabled when both of the following conditions are met:





Neighboring GERAN cells are shared by operators.



The serving and neighboring cells are managed by the same U2000, or the configuration data of the neighboring cells has been imported to the U2000 that manages the serving cell.

Automatic optimization of blind handover priorities for inter-RAT neighbor relationships It is recommended that this function be enabled in circuit switched fallback (CSFB) scenarios to reduce manual intervention in planning the blind handover priorities.

Site Expansion or Migration

It is recommended that automatic optimization of blind handover priorities for inter-RAT neighbor relationships be enabled during site expansion or migration. Enable other functions according to operators' policies. It is recommended that automatic optimization of blind handover priorities for inter-RAT neighbor relationships be enabled in CSFB scenarios to reduce manual intervention in planning the blind handover priorities.

12.2 Required Information None

12.3 Deployment 12.3.1 Process The deployment process for inter-RAT ANR varies with network deployment stages. eNodeB Deployment

Figure 12-1 illustrates the deployment process for inter-RAT ANR during eNodeB deployment.

Figure 12-1 Deployment process for inter-RAT ANR during eNodeB deployment

Site Expansion or Migration

Figure 12-2 illustrates the deployment process for inter-RAT ANR during site expansion or migration. Figure 12-2 Deployment process for inter-RAT ANR during site expansion or migration

12.3.2 Requirements Inter-RAT ANR has the following requirements: 

UEs on the network are DRX-capable and support ANR measurements on inter-RAT cells.



iManager U2000 V200R015C00 or later is used. iManager U2000 V200R015C00 or later supports the function of cross-U2000 neighboring cell information query.



The inter-RAT ANR measurement information (including frequencies to be measured) has been configured. For ANR with UTRAN, the UtranNFreq MO has been configured. For ANR with GERAN, the GeranNfreqGroup and GeranNfreqGroupArfcn MOs have been configured. For details, see Inter-RAT Mobility Management in Connected Mode Feature Parameter Description.



To use automatic optimization of blind handover priorities of inter-RAT neighbor relationships, operators must enable the PS handover function and select the PS_HO(PS_HO) option of the CSFallBackPolicyCfg.CsfbHoPolicyCfg parameter. For details about CSFB, see CS Fallback Feature Parameter Description.



The configurations in the CME engineering parameter table are correct when the blacklisted neighbor relationship management function is enabled. The following are required in the CME engineering parameter table:





For non-multi-RRU cells, the CGI (comprised of RNC ID, MCC, MNC, and Cell ID), latitude, and longitude information about the cells is specified on the WCDMA or TDSCDMA sheet.



For multi-RRU cells, the CGI information about the cells is specified on the WCDMA or TDSCDMA sheet. The "REPEATERRRU" field is set to Yes, indicating that multiple RRUs exist and the latitude and longitude of each RRU need to be specified. On the REPEATER sheet, the CGI, RAT (RATTYPE=LTE), RRU name (RepeaterName), latitude, and longitude information about the cells is specified. Multiple rows with the same CGI but different latitudes and longitudes are specified for a multi-RRU cell.

Operators have purchased and activated the license listed in Table 12-1.

Table 12-1 License information for inter-RAT ANR Feature ID

Feature Name

Model

License Control Item

LOFD-002002

Inter-RAT ANR

LT1S00IANR00

LOFD-081225

Neighbor Cell Classification Management

LT1S00NCCM00 Neighbor Cell Classification Management (Per Cell)

12.3.3 Precautions None

12.3.4 Hardware Adjustment N/A

Inter-RAT ANR (FDD)

NE

Sales Unit

eNodeB per cell Cell

per cell

12.3.5 Data Preparation and Feature Activation 12.3.5.1 Data Preparation There are three types of data sources: 

Network plan (negotiation not required): parameter values planned and set by the operator



Network plan (negotiation required): parameter values planned by the operator and negotiated with the EPC or peer transmission equipment



User-defined: parameter values set by users

Inter-RAT ANR on a Per Frequency Basis

The following table describes the parameter that must be set in a UtranNFreq MO to specify whether to allow ANR management of external cells on a neighboring UTRAN frequency and neighbor relationships with these cells. Parameter Name

Parameter ID

Data Source

UtranNFreq.AnrInd Network ANR Indication plan (negotiation not required)

Setting Notes

Set this parameter to NOT_ALLOWED(NOT_ALLOWED) or ALLOWED(ALLOWED) based on the operator's policy.

The following table describes the parameter that must be set in a GeranNfreqGroup MO to specify whether to allow ANR management of external cells on frequencies in a GERAN frequency group and neighbor relationships with these cells. Parameter Name

Parameter ID

Data Source

GeranNfreqGroup.AnrInd Network ANR Indication plan (negotiation not required)

Setting Notes

Set this parameter to NOT_ALLOWED(NOT_ALLOWED) or ALLOWED(ALLOWED) based on the operator's policy.

Optimization Mode of Inter-RAT ANR

The following describes the parameters that must be set in the ANR MO to set the optimization mode and optimization mode policy.

Parameter Name

Parameter ID

Optimization ANR.OptMode Mode

Data Source

Setting Notes

Set this parameter to FREE(FREE) or Network CONTROLLED(CONTROLLED) based on plan (negotiation the operator's policy. not required)

Optimization ANR.OptModeStrategy Network Mode plan Strategy (negotiation not required)

Select the UtranCtrlOptMode(UTRANCtrlOptMode) and GeranCtrlOptMode(GERANCtrlOptMode) options.

NRT Entry Addition by Using Inter-RAT Event-triggered ANR

The following table describes the parameters that must be set in the ENodeBAlgoSwitch MO to configure the function of "NRT entry addition by using inter-RAT event-triggered ANR". Parameter Name

Parameter ID

Data Source

Setting Notes

ANR algorithm switch

ENodeBAlgoSwitch.AnrSwitch

Network Select or deselect the following option plan When to Use Inter-RAT ANR: (negotiation  UtranEventAnrSwitch(UtranEven not  GeranEventAnrSwitch(GeranEve required)

ANR Function Switch

CellAlgoSwitch.AnrFunctionSwitch

Network Select or deselect the INTER_RAT_ANR_SW(INTER_RAT_ plan (negotiation referring to 12.1 When to Use Inter-RA not required)

Handover ENodeBAlgoSwitch.HoSignalingOptSwitch Network It is recommended that the McUtranNcellNumOptSwtich(McUtr Signaling plan Optimized (negotiation option be selected. Switch not required)

The following table describes the parameter that must be set in the GlobalProcSwitch MO to control whether to configure the optimization of measurement configuration for ANR with GERAN.

Parameter Name

Parameter ID

Data Source

Setting Notes

GlobalProcSwitch.ProtocolMsgOptSwitch Network Protocol Select the GeranAnrMcOptSwitch(GeranAnrM Message plan Optimization (negotiation option. Switch not required)

The following table describes the parameters that must be set in the ANR MO to configure the long DRX cycle for inter-RAT ANR and the policy based on which inter-RAT event-triggered ANR with GERAN or UTRAN adds a neighbor relationship to an NRT. Parameter Name

Parameter ID

Data Source

Setting Notes

Utran Event ANR Mode

ANR.UtranEventAnrMode

Network plan (negotiation not required)

This parameter specifies the po on which inter-RAT event-trigge with UTRAN adds a neighbor re to an NRT. If adjacent cells of a share PSCs, you are advised to parameter to NOT_BASED_NCL(NOT_BASE to prevent inappropriate neighbo relationships from being added With the parameter set to NOT_BASED_NCL(NOT_BASE the eNodeB does not add a neig relationship to an NRT based on neighboring cell information in th but based on the reported ECGI

Geran Event ANR Mode

ANR.GeranEventAnrMode

Network plan (negotiation not required)

This parameter specifies the po on which inter-RAT event-trigge with GERAN adds a neighbor re to an NRT. If adjacent cells of a share PCIs, you are advised to parameter to NOT_BASED_NCL(NOT_BASE to prevent inappropriate neighbo relationships from being added With the parameter set to NOT_BASED_NCL(NOT_BASE the eNodeB does not add a neig relationship to an NRT based on neighboring cell information in th but based on the reported ECGI

Parameter Name

Parameter ID

Data Source

CellDrxSpecialPara.LongDrxCycleForInterRatAnr Network Long DRX plan Cycle for (negotiation Internot RAT required) ANR

Setting Notes 



If a neighboring UTRAN ex retain the default value SF1280(1280 subframes) parameter. If a neighboring GERAN ex this parameter to SF2560(2 subframes).

Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Inter-RAT ANR

The following table describes parameter that must be set in the ENodeBAlgoSwitch MO to specify whether to enable removal of inappropriate neighbor relationships and priority-based removal in inter-RAT ANR. Parameter Name

Parameter ID

ENodeBAlgoSwitch.AnrSwitch ANR algorithm switch

ANR Function Switch

Data Source

Setting Notes

Network Select or deselect the following options by refe plan When to Use Inter-RAT ANR: (negotiation  UtranAutoNrtDeleteSwitch(UtranAutoNrtD not  GeranAutoNrtDeleteSwitch(GeranAutoNrt required)

CellAlgoSwitch.AnrFunctionSwitch Network Select or deselect the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW plan (negotiation referring to 12.1 When to Use Inter-RAT ANR. not required)

The following table describes the parameter that must be set in the ANR MO to configure whether to enable removal of inappropriate neighbor relationships in ANR with UTRAN and ANR with GERAN. Parameter Name

NRT Delete Mode

Parameter ID

Data Source

ANR.NrtDelMode Network plan (negotiation not required)

Setting Notes

Select the UTRAN_DELERRORNCELL(UTRAN_DELERRORNCELL) and GERAN_DELERRORNCELL(GERAN_DELERRORNCELL) options.

Removal of Redundant Neighbor Relationships in Inter-RAT ANR

The following table describes the parameter that must be set in the ANR MO to configure whether to enable removal of redundant neighbor relationships in ANR with UTRAN and ANR with GERAN. Parameter Name

NRT Delete Mode

Parameter ID

Data Source

Setting Notes

ANR.NrtDelMode Network plan (negotiation not required)

Select the UTRAN_DELREDUNDANCENCELL(UTRAN_DELREDUNDANC and GERAN_DELREDUNDANCENCELL(GERAN_DELREDUNDANC options.

Penalty on Removed Neighbor Relationships with Inter-RAT Cells

The following table describes the parameters that must be set in the ANR MO to configure the statistical period of a penalty on removed neighbor relationships and the statistical count of a penalty on removed neighbor relationships. Parameter Name

Parameter ID

Data Source

Setting Notes

The recommended value is 10080. Neighbor ANR.NcellDelPunishPeriod Network Cell plan Deletion (negotiation Punish not Period required) UTRAN ANR.UtranNcellDelPunNum Network Neighbor plan Cell (negotiation Deletion not Punish required) Number

If this parameter is set to 1, the penalty function in ANR with UTRAN does not take effect. If this parameter is set to a value greater than 1, this function takes effect. You are advised to set this parameter to a value greater than 1.

Inter-RAT Fast ANR

The following table describes the parameters that must be set in the ENodeBAlgoSwitch MO to configure inter-RAT fast ANR.

Parameter Name

Parameter ID

Data Source

ENodeBAlgoSwitch.AnrSwitch ANR algorithm switch

ANR Function Switch

Setting Notes

Network Select or deselect the following options by plan referring to 12.1 When to Use Inter-RAT ANR: (negotiation  UtranFastAnrSwitch(UtranFastAnrSwitch) not  GeranFastAnrSwitch(GeranFastAnrSwitch required)

CellAlgoSwitch.AnrFunctionSwitch Network plan (negotiation not required)

Select or deselect the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW option by referring to 12.1 When to Use InterRAT ANR.

The following table describes the parameter that must be set in the ANR MO to configure the number of periodic PCI measurement reports sent for fast ANR. Parameter Name

Parameter ID

Data Source

Setting Notes

ANR.FastAnrRprtAmount Network Fast Set this parameter by referring to 12.1 ANR PCI plan When to Use Inter-RAT ANR. report (negotiation amount not required)

Inter-RAT Neighbor Relationship Classification

The following table describes the parameter that must be set in the CellAlgoSwitch MO to configure inter-RAT neighbor relationship classification. Parameter Name

Parameter ID

Data Source

Setting Notes

CellAlgoSwitch.NCellClassMgtSw Network Neighbor Select or deselect the following options by re Cell plan Use Inter-RAT ANR: Classification (negotiation  UTRAN_NCELL_CLASS_SW(UTRAN_ Mgt Switch not  GERAN_NCELL_CLASS_SW(GERAN_ required)  EXTENDED_NCELL_MNG_SW(EXTEN

The following table describes the parameters that must be set in the IRATNCellClassMgt MO to configure the statistic period for neighbor relationship classification and threshold for neighboring cell measurement.

Parameter Name

Parameter ID

Data Source

Setting Notes

IRATNCellClassMgt.StatPeriodForNCellClass Network Statistic Period plan For NCell (negotiation Class not required)

Set this parameter by referring to 12.1 When to Use InterRAT ANR.

IRATNCellClassMgt.NCellMeasNumThd NCell Measure Number Threshold

Set this parameter by referring to 12.1 When to Use InterRAT ANR.

Network plan (negotiation not required)

Inter-RAT Blacklisted Neighbor Relationship Management

The following table describes the parameter that must be set in the CellAlgoSwitch MO to configure over-distant neighboring UTRAN cell detection. Parameter Name

Parameter ID

Data Source

Setting Notes

CellAlgoSwitch.NCellClassMgtSw Network Neighbor Select or deselect the UTRAN_OVERDISTANCE_SW(UTRAN_OV Cell plan Classification (negotiation option by referring to 12.1 When to Use Inter Mgt Switch not required)

The following table describes the parameters that must be set in the NCellParaCfg MO to configure the handover statistics threshold, handover success threshold, and neighbor cell over distance threshold. Parameter Name

Parameter ID

Data Source

Setting Notes

Handover NCellParaCfg.HoStatThd Statistic Threshold

Network Set this parameter by referring to plan 12.1 When to Use Inter-RAT ANR. (negotiation not required)

Handover NCellParaCfg.HoSuccThd Success

Network Set this parameter by referring to plan 12.1 When to Use Inter-RAT ANR. (negotiation

Parameter Name

Parameter ID

Rat Threshold Neighbor Cell Distance Thld

Data Source

Setting Notes

not required) NCellParaCfg.NCellOdDisThd Network Set this parameter by referring to plan 12.1 When to Use Inter-RAT ANR. (negotiation not required)

Inter-RAT ANR with Shared Cells

The following table describes the parameter that must be set in a UtranNFreq MO to specify whether a neighboring UTRA frequency is shared by operators. Parameter Name

Parameter ID

Data Source

UtranNFreq.UtranRanSharingInd Network UTRAN Frequency plan RAN (negotiation Sharing not Indication required)

Setting Notes

The recommended value is BOOLEAN_TRUE(True) for a neighboring UTRA frequency if a neighboring UTRAN cell on the frequency is shared by operators.

The following table describes the parameter that must be set in a GeranNfreqGroup MO to specify whether a neighboring GERAN frequency group is shared by operators. Parameter Name

Parameter ID

Data Source

GERAN GeranNfreqGroup.GeranRanSharingInd Network Freq plan Group (negotiation RAN not Sharing required) Indication

Setting Notes

The recommended value is BOOLEAN_TRUE(True) for a neighboring GERAN frequency group if a neighboring GERAN cell on a frequency of the group is shared by operators.

The following table describes the parameter that must be set in the ENodeBAlgoSwitch MO to configure ANR with shared cells.

Parameter Name

Parameter ID

Data Source

Setting No

ENodeBAlgoSwitch.RanSharingAnrSwitch Network ANR Select or deselect the following options Under plan Use Inter-RAT ANR: RAN (negotiation  NBSUTRANRANSharingSwitch(N Sharing not  NBSGERANRANSharingSwitch(N Algorithm required) Switch

Automatic Optimization of Blind Handover Priorities for Inter-RAT Neighbor Relationships

The following table describes the parameter that must be set in the ENodeBAlgoSwitch MO to configure whether to enable automatic optimization of blind handover priorities for inter-RAT neighbor relationships. Parameter Name

Parameter ID

Data Source

Setting Notes

ENodeBAlgoSwitch.BlindNcellOptSwitch Network Blind Ncell Select or deselect the following Optimization plan options by referring to 12.1 Switch (negotiation When to Use Inter-RAT ANR: not  GeranBlindNcellOptSwitch required)  UtranBlindNcellOptSwitch

Automatic Optimization of Measurement Priorities for Inter-RAT Neighbor Relationships

The following table describes the parameter that must be set in the ENodeBAlgoSwitch MO to configure whether to enable automatic optimization of blind handover priorities for inter-RAT neighbor relationships. Parameter Name

Parameter ID

Data Source

Setting Notes

Neighboring ENodeBAlgoSwitch.NCellRankingSwitch Network Select or deselect the following Cell plan options by referring to 12.1 Ranking (negotiation When to Use Inter-RAT ANR: Switch not  GERAN_SWITCH(GREAN required) Neighboring Cell Ranking Switch)

Parameter Name

Parameter ID

Data Source

Setting Notes 

UTRAN_SWITCH(UTRAN Neighboring Cell Ranking Switch)

PLMN ID Management

The following table describes the parameters that must be set in an NCellPlmnList MO to add a listed PLMN. Parameter Name

Parameter ID

Data Source

Setting Notes

Mobile Country Code

NCellPlmnList.Mcc

Network plan (negotiation not required)

This parameter specifies the MCC of a PLMN.

Mobile Network Code

NCellPlmnList.Mnc

Network plan (negotiation not required)

This parameter specifies the MNC of a PLMN.

Network plan (negotiation not required)

This parameter specifies the RAT of a PLMN.

Rat Type NCellPlmnList.RatType

Plmn List NCellPlmnList.PlmnListType Network plan Type (negotiation not required)

For invalid PLMNs reported by UEs, the value BLACK_LIST(BLACK_LIST) is recommended. For PLMNs near the local PLMN, the value GREY_LIST(GREY_LIST) is recommended.

HO Blacklist and HO Whitelist

The following table describes the parameters that must be set in the UtranNCell MO to configure the UTRAN HO blacklist and the UTRAN HO whitelist.

Parameter Name

Parameter ID

UtranNCell.NoHoFlag No handover indicator

No remove indicator

Data Source

Network plan (negotiation not required)

UtranNCell.NoRmvFlag Network plan (negotiation not required)

Setting Notes

Set this parameter to FORBID_HO_ENUM(Forbid Ho) when configuring an HO blacklist. Set this parameter to PERMIT_HO_ENUM(Permit Ho) when configuring an HO whitelist. Set this parameter to FORBID_RMV_ENUM(Forbid ANR Remove) when configuring either an HO whitelist or an HO blacklist.

The following table describes the parameters that must be set in the GeranNCell MO to configure the GERAN HO blacklist and the GERAN HO whitelist. Parameter Name

Parameter ID

GeranNCell.NoHoFlag No handover indicator

No remove indicator

Data Source

Network plan (negotiation not required)

GeranNCell.NoRmvFlag Network plan (negotiation not required)

Setting Notes

Set this parameter to FORBID_HO_ENUM(Forbid Ho) when configuring an HO blacklist. Set this parameter to PERMIT_HO_ENUM(Permit Ho) when configuring an HO whitelist. Set this parameter to FORBID_RMV_ENUM(Forbid ANR Remove) when configuring either an HO whitelist or an HO blacklist.

12.3.5.2 Using the CME For detailed operations, see CME-based Feature Configuration.

12.3.5.3 Using MML Commands Activating Frequency-specific Inter-RAT ANR 

Activating Frequency-specific ANR with UTRAN Run the MOD UTRANNFREQ command with the ANR Indication parameter set to ALLOWED(ALLOWED).



Activating Frequency-specific ANR with GERAN Run the MOD GERANNFREQGROUP command with the ANR Indication parameter set to ALLOWED(ALLOWED).

Activating Addition of NRT Entries in Inter-RAT Event-triggered ANR 

Activating Addition of NRT Entries in Event-triggered ANR with UTRAN 1. Run the MOD ENODEBALGOSWITCH command with the UtranEventAnrSwitch(UtranEventAnrSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. Run the MOD ANR command with the Utran Event ANR Mode parameter set to NOT_BASED_NCL(NOT_BASED_NCL). 4. Run the MOD ENODEBALGOSWITCH with the McUtranNcellNumOptSwtich(McUtranNcellNumOptSwtich) option of the Handover Signaling Optimized Switch parameter selected.



Activating Addition of NRT Entries in Event-triggered ANR with GERAN 1. Run the MOD ENODEBALGOSWITCH command with the GeranEventAnrSwitch(GeranEventAnrSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. Run the MOD ANR command with the Geran Event ANR Mode parameter set to NOT_BASED_NCL(NOT_BASED_NCL). 4. Run the MOD GLOBALPROCSWITCH with the GeranAnrMcOptSwitch(GeranAnrMcOptSwitch) option of the Protocol Message Optimization Switch parameter selected.

Activating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Inter-RAT ANR 

Activating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in ANR with UTRAN 1. Run the MOD ENODEBALGOSWITCH command with the UtranAutoNrtDeleteSwitch(UtranAutoNrtDeleteSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter selected.

3. Run the MOD ANR command with the UTRAN_DELERRORNCELL(UTRAN_DELERRORNCELL) option of the NRT Delete Mode parameter selected. 

Activating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in ANR with GERAN 1. Run the MOD ENODEBALGOSWITCH command with the GeranAutoNrtDeleteSwitch(GeranAutoNrtDeleteSwitch) option of the ANR algorithm switch parameter selected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter selected. 3. Run the MOD ANR command with the GERAN_DELERRORNCELL(GERAN_DELERRORNCELL) option of the NRT Delete Mode parameter selected.

Deactivating Removal of Redundant Neighbor Relationships in Inter-RAT ANR 

Deactivating Removal of Redundant Neighbor Relationships in ANR with UTRAN Run the MOD ANR command with the UTRAN_DELREDUNDANCENCELL(UTRAN_DELREDUNDANCENCELL) option of the NRT Delete Mode parameter deselected.



Deactivating Removal of Redundant Neighbor Relationships in ANR with GERAN Run the MOD ANR command with the GERAN_DELREDUNDANCENCELL(GERAN_DELREDUNDANCENCELl) option of the NRT Delete Mode parameter deselected.

Activating Penalty on Removed Neighbor Relationships with UTRAN Cells Run the MOD ANR command with the Neighbor Cell Deletion Punish Period and UTRAN Neighbor Cell Deletion Punish Number parameters specified. Activating Inter-RAT Fast ANR 

Activating Fast ANR with UTRAN Run the MOD ENODEBALGOSWITCH command with the UtranFastAnrSwitch(UtranFastAnrSwitch) option of the ANR algorithm switch parameter selected. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter selected.



Activating Fast ANR with GERAN Run the MOD ENODEBALGOSWITCH command with the GeranFastAnrSwitch(GeranFastAnrSwitch) option of the ANR algorithm switch parameter selected.

Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter selected. Activating Inter-RAT Neighbor Relationship Classification 

Activating Classification of Neighbor Relationships with UTRAN Cells 1. Run the MOD CELLALGOSWITCH command with the UTRAN_NCELL_CLASS_SW(UTRAN_NCELL_CLASS_SW) of the Neighbor Cell Classification Mgt Switch parameter selected. 2. Ensure that the control mode for inter-RAT ANR does not take effect. That is, set the ANR.OptMode parameter to FREE(FREE). Or set the ANR.OptMode parameter to CONTROLLED(CONTROLLED) and deselect the UtranCtrlOptMode(UTRANCtrlOptMode) option of the ANR.OptModeStrategy parameter. 3. (Optional) If the extended neighbor relationships need to be stored in the configuration database, run the MOD CELLALGOSWITCH command with the EXTENDED_NCELL_MNG_SW(EXTENDED_NCELL_MNG_SW) option of the Neighbor Cell Classification Mgt Switch parameter selected.



Activating Classification of Neighbor Relationships with GERAN Cells 1. Run the MOD CELLALGOSWITCH command with the GERAN_NCELL_CLASS_SW(GERAN_NCELL_CLASS_SW) of the Neighbor Cell Classification Mgt Switch parameter selected. 2. Ensure that the control mode for inter-RAT ANR does not take effect. That is, set the ANR.OptMode parameter to FREE(FREE). Or set the ANR.OptMode parameter to CONTROLLED(CONTROLLED) and deselect the GeranCtrlOptMode(GERANCtrlOptMode) option of the ANR.OptModeStrategy parameter. 3. (Optional) If the extended neighbor relationships need to be stored in the configuration database, run the MOD CELLALGOSWITCH command with the EXTENDED_NCELL_MNG_SW(EXTENDED_NCELL_MNG_SW) option of the Neighbor Cell Classification Mgt Switch parameter selected.

Activating Inter-RAT Blacklisted Neighbor Relationship Management 1. Run the MOD CELLALGOSWITCH command with the UTRAN_OVERDISTANCE_SW(UTRAN_OVERDISTANCE_SW) option of the ANR Algorithm Switch parameter selected. NOTE: Enable neighbor relationship classification in ANR with UTRAN before activating inter-RAT blacklisted neighbor relationship management.

Activating Inter-RAT ANR with Shared Cells



Activating ANR with Shared UTRAN Cells 1. Run the MOD UTRANNFREQ command with the UTRAN Frequency RAN Sharing Indication parameter set to BOOLEAN_TRUE(True). 2. Run the MOD ENODEBALGOSWITCH command with the NBSUTRANRANSharingSwitch(NBSUTRANRANSharingSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter selected.



Activating Inter-RAT ANR with Shared GERAN Cells 1. Run the MOD GERANNFREQGROUP command with the GERAN Freq Group RAN Sharing Indication parameter set to BOOLEAN_TRUE(True). 2. Run the MOD ENODEBALGOSWITCH command with the NBSGERANRANSharingSwitch(NBSGERANRANSharingSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter selected.

Activating Automatic Optimization of Blind Handover Priorities for Inter-RAT Neighbor Relationships 

Activating Automatic Optimization of Blind Handover Priorities for Neighbor Relationships with UTRAN Cells Run the MOD ENODEBALGOSWITCH command with the UtranBlindNcellOptSwitch(UtranBlindNcellOptSwitch) option of the Blind Ncell Optimization Switch parameter selected.



Activating Automatic Optimization of Blind Handover Priorities for Neighbor Relationships with GERAN Cells Run the MOD ENODEBALGOSWITCH command with the GeranBlindNcellOptSwitch(GeranBlindNcellOptSwitch) option of the Blind Ncell Optimization Switch parameter selected.

Activating Automatic Optimization of Measurement Priorities for Inter-RAT Neighbor Relationships 

Activating Automatic Optimization of Measurement Priorities for Neighbor Relationships with UTRAN Cells Run the MOD ENODEBALGOSWITCH command with the UTRAN_SWITCH(UTRAN Neighboring Cell Ranking Switch) option of the Neighboring Cell Ranking Switch parameter selected.



Activating Automatic Optimization of Measurement Priorities for Neighbor Relationships with GERAN Cells Run the MOD ENODEBALGOSWITCH command with the GERAN_SWITCH(GREAN Neighboring Cell Ranking Switch) option of the Neighboring Cell Ranking Switch parameter selected.

Activating PLMN ID Management Run the ADD NCELLPLMNLIST command to add a listed PLMN.

Configuring HO Blacklists and HO Whitelists 

Configuring the UTRAN HO Blacklist and Whitelist Run the ADD UTRANNCELL command to configure a UTRAN blacklist and whitelist.





To whitelist a cell, set the No handover indicator and No remove indicator parameters to PERMIT_HO_ENUM(Permit Ho) and FORBID_RMV_ENUM(Forbid ANR Remove), respectively.



To blacklist a cell, set the No handover indicator and No remove indicator parameters to FORBID_HO_ENUM(Forbid Ho) and FORBID_RMV_ENUM(Forbid ANR Remove), respectively.

Configuring the GERAN HO Blacklist and Whitelist Run the ADD GERANNCELL command to configure a GERAN blacklist and whitelist. 

To whitelist a cell, set the No handover indicator and No remove indicator parameters to PERMIT_HO_ENUM(Permit Ho) and FORBID_RMV_ENUM(Forbid ANR Remove), respectively.



To blacklist a cell, set the No handover indicator and No remove indicator parameters to FORBID_HO_ENUM(Forbid Ho) and FORBID_RMV_ENUM(Forbid ANR Remove), respectively.

12.3.5.4 MML Command Examples Activating Frequency-specific Inter-RAT ANR MOD UTRANNFREQ: LocalCellId=xx, UtranDlArfcn=xx, AnrInd=ALLOWED; MOD GERANNFREQGROUP: LocalCellId=xx, DlEarfcn=xx, AnrInd=ALLOWED;

Activating Addition of NRT Entries in Inter-RAT Event-triggered ANR MOD MOD MOD MOD MOD MOD MOD

ENODEBALGOSWITCH: AnrSwitch=UtranEventAnrSwitch-1; CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTER_RAT_ANR_SW-1; ANR: UtranEventAnrMode=NOT_BASED_NCL; ENODEBALGOSWITCH: HoSignalingOptSwitch=McUtranNcellNumOptSwtich-1; ENODEBALGOSWITCH: AnrSwitch=GeranEventAnrSwitch-1; ANR: GeranEventAnrMode=NOT_BASED_NCL; GLOBALPROCSWITCH: ProtocolMsgOptSwitch=GeranAnrMcOptSwitch-1;

Activating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Inter-RAT ANR MOD MOD MOD MOD MOD

ENODEBALGOSWITCH: AnrSwitch=UtranAutoNrtDeleteSwitch-1; CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTER_RAT_ANR_SW-1; ANR: NrtDelMode=UTRAN_DELERRORNCELL-1; ENODEBALGOSWITCH: AnrSwitch=GeranAutoNrtDeleteSwitch-1; ANR: NrtDelMode=GERAN_DELERRORNCELL-1;

Deactivating Removal of Redundant Neighbor Relationships in Inter-RAT ANR MOD ANR: NrtDelMode=UTRAN_DELREDUNDANCENCELL-0; MOD ANR: NrtDelMode=GERAN_DELREDUNDANCENCELL-0;

Activating Penalty on Removed Neighbor Relationships with UTRAN Cells MOD ANR: NcellDelPunishPeriod=xx, UtranNcellDelPunNum=xx;

Activating Inter-RAT Neighbor Relationship Classification MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=UTRAN_NCELL_CLASS_SW-1 & EXTENDED_NCELL_MNG_SW-0; MOD ANR: OptMode=FREE or MOD ANR: OptMode=CONTROLLED, OptModeStrategy=UtranCtrlOptMode-0; MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=GERAN_NCELL_CLASS_SW-1 & EXTENDED_NCELL_MNG_SW-0; MOD ANR: OptMode=FREE or MOD ANR: OptMode=CONTROLLED, OptModeStrategy=GeranCtrlOptMode-0;

Activating Inter-RAT Blacklisted Neighbor Relationship Management MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=UTRAN_NCELL_CLASS_SW-1 & EXTENDED_NCELL_MNG_SW-0; MOD ANR: OptMode=FREE or MOD ANR: OptMode=CONTROLLED, OptModeStrategy=UtranCtrlOptMode-0; MOD CELLALGOSWITCH: LocalCellId=xx, UTRAN_OVERDISTANCE_SW-1;

Activating Inter-RAT Fast ANR MOD CELLALGOSWITCH: LocalCellId=xx, AnrFunctionSwitch=INTER_RAT_ANR_SW-1; MOD ENODEBALGOSWITCH: AnrSwitch=UtranFastAnrSwitch-1; MOD ENODEBALGOSWITCH: AnrSwitch=GeranFastAnrSwitch-1;

Activating Inter-RAT ANR with Shared Cells MOD UTRANNFREQ: LocalCellId=xx, UtranDlArfcn=xx, UtranRanSharingInd=BOOLEAN_TRUE; MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSUTRANRANSharingSwitch-1; MOD GERANNFREQGROUP: LocalCellId=xx, BcchGroupId=xx, BandIndicator=xx, GeranRanSharingInd=BOOLEAN_TRUE; MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSGERANRANSharingSwitch-1;

Activating Automatic Optimization of Blind Handover Priorities for Inter-RAT Neighbor Relationships MOD ENODEBALGOSWITCH: BlindNcellOptSwitch=UtranBlindNcellOptSwitch-1; MOD ENODEBALGOSWITCH: BlindNcellOptSwitch=GeranBlindNcellOptSwitch-1;

Activating Automatic Optimization of Measurement Priorities for Inter-RAT Neighbor Relationships MOD ENODEBALGOSWITCH: NCellRankingSwitch=UTRAN_SWITCH-1; MOD ENODEBALGOSWITCH: NCellRankingSwitch=GERAN_SWITCH-1;

Activating PLMN ID Management ADD NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=UTRAN, PlmnListType=BLACK_LIST; ADD NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=GERAN, PlmnListType=GREY_LIST;

Configuring HO Blacklists and HO Whitelists ADD UTRANNCELL: LocalCellId=0, Mcc="460", Mnc="00", RncId=123, CellId=0, NoHoFlag=FORBID_HO_ENUM, NoRmvFlag=FORBID_RMV_ENUM;

ADD UTRANNCELL: LocalCellId=0, Mcc="460", Mnc="00", RncId=123, CellId=0, NoHoFlag=PERMIT_HO_ENUM, NoRmvFlag=FORBID_RMV_ENUM; ADD GERANNCELL: LocalCellId=0, Mcc="460", Mnc="00", Lac=1, GeranCellId=0, NoRmvFlag=FORBID_RMV_ENUM, NoHoFlag=FORBID_HO_ENUM; ADD GERANNCELL: LocalCellId=0, Mcc="460", Mnc="00", Lac=1, GeranCellId=0, NoRmvFlag=FORBID_RMV_ENUM, NoHoFlag=PERMIT_HO_ENUM;

12.3.6 Activation Observation The procedure for observing the activation of inter-RAT ANR is similar to that of intra-RAT ANR. For details, see 11.3.6 Activation Observation. The MML commands used to query interRAT neighboring cells are different, which are listed as follows: 

LST UTRANNCELL



LST GERANNCELL



LST UTRANEXTERNALCELLPLMN



LST GERANEXTERNALCELLPLMN



DSP UTRANEXTENDEDNCELL



DSP GERANEXTENDEDNCELL



LST UTRANBLKNCELL

12.3.7 Reconfiguration None

12.3.8 Deactivation Table 12-2 lists the parameters involved in deactivating inter-RAT ANR. Table 12-2 Parameters for inter-RAT ANR MO

ENodeBAlgoSwitch

Parameter Group

AnrSwitch, BlindNcellOptSwitch, BlindNcellOptSwitch, HoSignalingOptSwitch, RanSharingAnrSwitch

Setting Notes 

Deselect the corresponding options to deactivate the ANR algorithm:  UtranEventAnrSwitch  GeranEventAnrSwitch  UtranAutoNrtDeleteSwitch  GeranAutoNrtDeleteSwitch  UtranFastAnrSwitch  GeranFastAnrSwitch  MlbBasedEventAnrSwitch  ServiceBasedEventAnrSwitch  NBSUTRANRANSharingSwitch  NBSGERANRANSharingSwitch

MO

Parameter Group

Setting Notes 





Deselect the corresponding options to deactivate automatic optimization of blind handover priorities for interRAT neighbor relationships:  UtranBlindNcellOptSwitch  GeranBlindNcellOptSwitch Deselect the corresponding options to deactivate automatic optimization of measurement priorities for interRAT neighbor relationships:  UTRAN_SWITCH  GERAN_SWITCH Deselect the McUtranNcellNumOptSwtich option to disable the optimization of the number of neighboring UTRAN cells contained in the measurement configuration.

CellAlgoSwitch

AnrFunctionSwitch

Deselect the INTER_RAT_ANR_SW option.

UtranNFreq

AnrInd

Set this parameter to NOT_ALLOWED.

UtranNFreq

InterFreqRanSharingInd Set this parameter to BOOLEAN_FALSE.

GeranNfreqGroup

AnrInd

Set this parameter to NOT_ALLOWED.

GeranNfreqGroup

GeranRanSharingInd

Set this parameter to BOOLEAN_FALSE.

GlobalProcSwitch

ProtocolMsgOptSwitch

Deselect the GeranAnrMcOptSwitch option to disable the optimization of the measurement configuration related to ANR with GERAN.

NCellPlmnList

MCC, MNC, RatType, PlmnListType

Remove the listed PLMNs.

CellAlgoSwitch

NCellClassMgtSw

Deselect the following options of this parameter:  UTRAN_NCELL_CLASS_SW  GERAN_NCELL_CLASS_SW  EXTENDED_NCELL_MNG_SW

Inter-RAT ANR can be deactivated by using the CME or MML commands.

12.3.8.1 Using the CME For detailed operations, see CME-based Feature Configuration.

12.3.8.2 Using MML Commands Deactivating Frequency-specific Inter-RAT ANR 

Deactivating Frequency-specific ANR with UTRAN Run the MOD UTRANNFREQ command with the ANR Indication parameter set to NOT_ALLOWED(NOT_ALLOWED).



Deactivating Frequency-specific ANR with GERAN Run the MOD GERANNFREQGROUP command with the ANR Indication parameter set to NOT_ALLOWED(NOT_ALLOWED).

Deactivating Addition of NRT Entries in Inter-RAT Event-triggered ANR 

Deactivating Addition of NRT Entries in Event-triggered ANR with UTRAN 1. Run the MOD ENODEBALGOSWITCH command with the UtranEventAnrSwitch(UtranEventAnrSwitch) option of the ANR algorithm switch parameter deselected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter deselected. 3. Run the MOD ENODEBALGOSWITCH with the McUtranNcellNumOptSwtich(McUtranNcellNumOptSwtich) option of the Handover Signaling Optimized Switch parameter deselected.



Deactivating Addition of NRT Entries in Event-triggered ANR with GERAN 1. Run the MOD ENODEBALGOSWITCH command with the GeranEventAnrSwitch(GeranEventAnrSwitch) option of the ANR algorithm switch parameter deselected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter deselected. 3. Run the MOD GLOBALPROCSWITCH with the GeranAnrMcOptSwitch(GeranAnrMcOptSwitch) option of the Protocol Message Optimization Switch parameter deselected.

Deactivating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Inter-RAT ANR 

Deactivating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in ANR with UTRAN

1. Run the MOD ENODEBALGOSWITCH command with the UtranAutoNrtDeleteSwitch(UtranAutoNrtDeleteSwitch) option of the ANR algorithm switch parameter deselected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter deselected. 3. Run the MOD ANR command with the UTRAN_DELERRORNCELL(UTRAN_DELERRORNCELL) option of the NRT Delete Mode parameter deselected. 

Deactivating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in ANR with GERAN 1. Run the MOD ENODEBALGOSWITCH command with the GeranAutoNrtDeleteSwitch(GeranAutoNrtDeleteSwitch) option of the ANR algorithm switch parameter deselected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter deselected. 3. Run the MOD ANR command with the GERAN_DELERRORNCELL(GERAN_DELERRORNCELL) option of the NRT Delete Mode parameter deselected.

Deactivating Removal of Redundant Neighbor Relationships in Inter-RAT ANR 

Deactivating Removal of Redundant Neighbor Relationships in ANR with UTRAN Run the MOD ANR command with the UTRAN_DELREDUNDANCENCELL(UTRAN_DELREDUNDANCENCELL) option of the NRT Delete Mode parameter deselected.



Deactivating Removal of Redundant Neighbor Relationships in ANR with GERAN Run the MOD ANR command with the GERAN_DELREDUNDANCENCELL(GERAN_DELREDUNDANCENCELl) option of the NRT Delete Mode parameter deselected.

Deactivating Penalty on Removed Neighbor Relationships with UTRAN Cells Run the MOD ANR command with the Neighbor Cell Deletion Punish Period and UTRAN Neighbor Cell Deletion Punish Number parameters set to 0. Deactivating Inter-RAT Fast ANR 

Deactivating Fast ANR with UTRAN 1. Run the MOD ENODEBALGOSWITCH command with the UtranFastAnrSwitch(UtranFastAnrSwitch) option of the ANR algorithm switch parameter deselected.

2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter deselected. 

Deactivating Fast ANR with GERAN 1. Run the MOD ENODEBALGOSWITCH command with the GeranFastAnrSwitch(GeranFastAnrSwitch) option of the ANR algorithm switch parameter deselected. 2. Run the MOD CELLALGOSWITCH command with the INTER_RAT_ANR_SW(INTER_RAT_ANR_SW) option of the ANR Function Switch parameter deselected.

Deactivating Inter-RAT Neighbor Relationship Classification 

Deactivating Classification of Neighbor Relationships with UTRAN Cells 1. Run the MOD CELLALGOSWITCH command with the UTRAN_NCELL_CLASS_SW(UTRAN_NCELL_CLASS_SW) of the Neighbor Cell Classification Mgt Switch parameter deselected. 2. Run the MOD ANR command with the Optimization Mode and Optimization Mode Strategy parameters set to CONTROLLED(CONTROLLED) and UtranCtrlOptMode(UTRANCtrlOptMode), respectively.



Deactivating Classification of Neighbor Relationships with GERAN Cells 1. Run the MOD CELLALGOSWITCH command with the GERAN_NCELL_CLASS_SW(GERAN_NCELL_CLASS_SW) of the Neighbor Cell Classification Mgt Switch parameter deselected. 2. Run the MOD ANR command with the Optimization Mode and Optimization Mode Strategy parameters set to CONTROLLED(CONTROLLED) and GeranCtrlOptMode(GeranCtrlOptMode), respectively.

Deactivating Inter-RAT Blacklisted Neighbor Relationship Management 1. Run the MOD CELLALGOSWITCH command with the UTRAN_OVERDISTANCE_SW(UTRAN_OVERDISTANCE_SW) option of the ANR Algorithm Switch parameter deselected. Deactivating Inter-RAT ANR with Shared Cells 

Deactivating ANR with Shared UTRAN Cells 1. Run the MOD UTRANNFREQ command with the UTRAN Frequency RAN Sharing Indication parameter set to BOOLEAN_FALSE(False). 2. Run the MOD ENODEBALGOSWITCH command with the NBSUTRANRANSharingSwitch(NBSUTRANRANSharingSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter deselected.



Deactivating Inter-RAT ANR with Shared GERAN Cells

1. Run the MOD GERANNFREQGROUP command with the GERAN Freq Group RAN Sharing Indication parameter set to BOOLEAN_FALSE(False). 2. Run the MOD ENODEBALGOSWITCH command with the NBSGERANRANSharingSwitch(NBSGERANRANSharingSwitch) option of the ANR Under RAN Sharing Algorithm Switch parameter deselected. Deactivating Automatic Optimization of Blind Handover Priorities for Inter-RAT Neighbor Relationships 

Deactivating Automatic Optimization of Blind Handover Priorities for Neighbor Relationships with UTRAN Cells Run the MOD ENODEBALGOSWITCH command with the UtranBlindNcellOptSwitch(UtranBlindNcellOptSwitch) option of the Blind Ncell Optimization Switch parameter deselected.



Deactivating Automatic Optimization of Blind Handover Priorities for Neighbor Relationships with GERAN Cells Run the MOD ENODEBALGOSWITCH command with the GeranBlindNcellOptSwitch(GeranBlindNcellOptSwitch) option of the Blind Ncell Optimization Switch parameter deselected.

Deactivating Automatic Optimization of Measurement Priorities for Inter-RAT Neighbor Relationships 

Deactivating Automatic Optimization of Measurement Priorities for Neighbor Relationships with UTRAN Cells Run the MOD ENODEBALGOSWITCH command with the UTRAN_SWITCH(UTRAN Neighboring Cell Ranking Switch) option of the Neighboring Cell Ranking Switch parameter deselected.



Deactivating Automatic Optimization of Measurement Priorities for Neighbor Relationships with GERAN Cells Run the MOD ENODEBALGOSWITCH command with the GERAN_SWITCH(GREAN Neighboring Cell Ranking Switch) option of the Neighboring Cell Ranking Switch parameter deselected.

Deactivating PLMN ID Management Run the RMV NCELLPLMNLIST command to remove a listed PLMN.

12.3.8.3 MML Command Examples Deactivating Frequency-specific Inter-RAT ANR MOD UTRANNFREQ: LocalCellId=xx, UtranDlArfcn=xx, AnrInd=NOT_ALLOWED; MOD GERANNFREQGROUP: LocalCellId=xx, DlEarfcn=xx, AnrInd= NOT_ALLOWED;

Deactivating Addition of NRT Entries in Inter-RAT Event-triggered ANR MOD ENODEBALGOSWITCH: AnrSwitch=UtranEventAnrSwitch-0; MOD CELLALGOSWITCH: LocalCellId=xx,AnrFunctionSwitch=INTER_RAT_ANR_SW-0;

MOD ENODEBALGOSWITCH: HoSignalingOptSwitch=McUtranNcellNumOptSwtich-0; MOD ENODEBALGOSWITCH: AnrSwitch=GeranEventAnrSwitch-0; MOD GLOBALPROCSWITCH: ProtocolMsgOptSwitch=GeranAnrMcOptSwitch-0;

Deactivating Removal of Inappropriate Neighbor Relationships and Priority-based Removal in Inter-RAT ANR MOD MOD MOD MOD MOD

CELLALGOSWITCH: LocalCellId=xx,AnrFunctionSwitch=INTER_RAT_ANR_SW-0; ENODEBALGOSWITCH: AnrSwitch=UtranAutoNrtDeleteSwitch-0; ANR: NrtDelMode=UTRAN_DELERRORNCELL-0; ENODEBALGOSWITCH: AnrSwitch=GeranAutoNrtDeleteSwitch-0; ANR: NrtDelMode=GERAN_DELERRORNCELL-0;

Deactivating Removal of Redundant Neighbor Relationships in Inter-RAT ANR MOD ANR: NrtDelMode=UTRAN_DELREDUNDANCENCELL-0; MOD ANR: NrtDelMode=GERAN_DELREDUNDANCENCELL-0;

Deactivating Penalty on Removed Neighbor Relationships with UTRAN Cells MOD ANR: UtranNcellDelPunNum=1;

Deactivating Inter-RAT Fast ANR MOD CELLALGOSWITCH: LocalCellId=xx,AnrFunctionSwitch=INTER_RAT_ANR_SW-0; MOD ENODEBALGOSWITCH: AnrSwitch=UtranFastAnrSwitch-0; MOD ENODEBALGOSWITCH: AnrSwitch=GeranFastAnrSwitch-0;

Deactivating Inter-RAT Neighbor Relationship Classification MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=UTRAN_NCELL_CLASS_SW-0 & EXTENDED_NCELL_MNG_SW-0; MOD ANR: OptMode=CONTROLLED, OptModeStrategy=UtranCtrlOptMode-1; MOD CELLALGOSWITCH: LocalCellId=xx, NCELLCLASSMGTSW=GERAN_NCELL_CLASS_SW-0 & EXTENDED_NCELL_MNG_SW-0; MOD ANR: OptMode=CONTROLLED, OptModeStrategy=GeranCtrlOptMode-1;

Deactivating Inter-RAT Blacklisted Neighbor Relationship Management MOD CELLALGOSWITCH: LocalCellId=xx, UTRAN_OVERDISTANCE_SW-0;

Deactivating Inter-RAT ANR with Shared Cells MOD UTRANNFREQ: LocalCellId=xx, UtranDlArfcn=xx, UtranRanSharingInd=BOOLEAN_FALSE; MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSUTRANRANSharingSwitch-0; MOD GERANNFREQGROUP: LocalCellId=xx, BcchGroupId=xx, BandIndicator=xx, GeranRanSharingInd=BOOLEAN_FALSE; MOD ENODEBALGOSWITCH: RanSharingAnrSwitch=NBSGERANRANSharingSwitch-0;

Deactivating Automatic Optimization of Blind Handover Priorities for Inter-RAT Neighbor Relationships MOD ENODEBALGOSWITCH: BlindNcellOptSwitch=UtranBlindNcellOptSwitch-0; MOD ENODEBALGOSWITCH: BlindNcellOptSwitch=GeranBlindNcellOptSwitch-0;

Deactivating Automatic Optimization of Measurement Priorities for Inter-RAT Neighbor Relationships MOD ENODEBALGOSWITCH: NCellRankingSwitch=UTRAN_SWITCH-0;

MOD ENODEBALGOSWITCH: NCellRankingSwitch=GERAN_SWITCH-0;

Deactivating PLMN ID Management RMV NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=UTRAN; RMV NCELLPLMNLIST: Mcc=xxx, Mnc=xx, RatType=GERAN;

12.4 Performance Monitoring Using inter-RAT ANR decreases the probability that the configurations of neighboring cells are missing or incorrect, thereby increasing the inter-RAT handover success rate and decreasing the service drop rate. To monitor the performance of inter-RAT ANR, you can check the performance counters related to handovers and service drops. After blacklisted neighbor relationship management is enabled, the handover-related KPIs will improve because the number of handovers to over-distant neighboring cells decreases. Table 12-3 lists the performance counters that can reflect the network performance after interRAT ANR is enabled. As inter-RAT neighbor relationships are configured, the values of these counters improve. Table 12-3 Counters related to inter-RAT ANR Counter ID

Counter Name

Counter Description

1526728468 L.IRATHO.E2W.NoNRT

Number of handover initiation failures from EUTRAN to WCDMA networks due to the target cell not being configured as a neighboring cell for the source cell

1526728469 L.IRATHO.E2T.NoNRT

Number of handover initiation failures from EUTRAN to TD-SCDMA networks due to the target cell not being configured as a neighboring cell for the source cell

1526728470 L.IRATHO.E2G.NoNRT

Number of handover initiation failures from EUTRAN to GERAN due to the target cell not being configured as a neighboring cell for the source cell

1526741659 L.E2W.CgiReadAtt

Number of attempts to read CGIs for neighboring WCDMA cells of a cell

1526741660 L.E2G.CgiReadAtt

Number of attempts to read CGIs for neighboring GERAN cells of a cell

1526741661 L.E2T.CgiReadAtt

Number of attempts to read CGIs for neighboring TD-SCDMA cells of a cell

1526741662 L.E2W.CgiReadSucc

Number of successful attempts to read CGIs for neighboring WCDMA cells of a cell

Counter ID

Counter Name

Counter Description

1526741663 L.E2G.CgiReadSucc

Number of successful attempts to read CGIs for neighboring GERAN cells of a cell

1526741664 L.E2T.CgiReadSucc

Number of successful attempts to Read CGIs for neighboring TDSCDMA cells of a cell

1526726989 L.IRATHO.E2W.PrepAttOut

Number of EUTRAN-to-WCDMA outgoing handover attempts

1526726990 L.IRATHO.E2W.ExecAttOut

Number of EUTRAN-to-WCDMA outgoing handover executions

1526726991 L.IRATHO.E2W.ExecSuccOut Number of successful EUTRAN-to-WCDMA outgoing handovers 1526726992 L.IRATHO.E2G.PrepAttOut

Number of EUTRAN-to-GERAN outgoing handover attempts

1526726993 L.IRATHO.E2G.ExecAttOut

Number of EUTRAN-to-GERAN outgoing handover executions

1526726994 L.IRATHO.E2G.ExecSuccOut Number of successful EUTRAN-to-GERAN outgoing handovers 1526727226 L.IRATHO.E2T.PrepAttOut

Number of EUTRAN-to-TDSCDMA outgoing handover attempts

1526727227 L.IRATHO.E2T.ExecAttOut

Number of EUTRAN-to-TDSCDMA outgoing handover executions

1526727228 L.IRATHO.E2T.ExecSuccOut

Number of successful EUTRAN-to-TDSCDMA outgoing handovers

12.5 Parameter Optimization The parameters that may need to be modified after inter-RAT ANR is activated are similar to those to be modified after intra-RAT ANR is activated. The following table describes only the parameters that are specific to inter-RAT ANR. Table 12-4 Parameters specific to inter-RAT ANR Parameter Name

Parameter ID

InterRat Fast ANR.FastAnrInterRatMeasUeNum ANR measurement UE number

Setting Notes

A larger value of this parameter results in more accurate NCL/NRT entry addition but a greater negative impact on quality of service and uplink network throughput

Parameter Name

Parameter ID

IntraRat Fast ANR.FastAnrInterRatUeNumThd ANR valid measurement min UE number

Setting Notes

A larger value of this parameter results in more accurate NCL/NRT entry addition but a greater negative impact on quality of service and uplink network throughput

UTRAN Fast ANR RSCP threshold

ANR.FastAnrRscpThd

A larger value of this parameter results in a higher RSCP requirement and therefor higher RSCP of the neighboring cells in the NCL.  In densely populated urban areas, increase the value of this parameter to reduce the probability of adding neighboring cells with low RSCP to the NCL.  In sparsely populated areas, reduce the value of this parameter to increase the probability of adding neighboring cells with low RSCP to the NCL.

GERAN Fast ANR RSSI threshold

ANR.FastAnrRssiThd

A larger value of this parameter results in a higher RSSI requirement and therefore higher RSSI of the neighboring cells in the NCL.  In densely populated urban areas, increase the value of this parameter to reduce the probability of adding neighboring cells with low RSSI to the NCL.  In sparsely populated areas, reduce the value of this parameter to increase the probability of adding neighboring cells with low RSSI to the NCL.

Statistic Cycle Coefficient

ANR.StatPeriodCoeff

A larger value of this parameter results in a longer time to remove a redundant neighbor relationship from the NRT.

ANR Frequency Priority

UtranNFreq.FreqPriorityForAnr

This parameter specifies the priority for a neighboring UTRAN frequency for priority-based removal when the number of neighbor relationships reaches its maximum.

Parameter Name

Parameter ID

Setting Notes 



A smaller value of this parameter indicates a lower priority and a higher probability of removing neighbor relationships with cells on this UTRAN frequency. A larger value of this parameter results in the opposite effects.

ANR Frequency Priority

GeranNfreqGroup.FreqPriorityForAnr

This parameter specifies the priority for a neighboring GERAN frequency group for priority-based removal when the number of neighbor relationships reaches its maximum.  A smaller value of this parameter indicates a lower priority and a higher probability of removing neighbor relationships with cells on this UTRAN frequency.  A larger value of this parameter results in the opposite effects.

Period for Neighboring Cell Ranking

ANR.PeriodForNCellRanking

A larger value of this parameter results in more samples. For a network that serves a large numbe of UEs, reduce the value of this parameter to accelerate measurement priorities updates.

Event ANR With VoIP Mode

ANR.EventAnrWithVoipMode

This parameter controls whether an eNodeB selects UEs performing services with a QCI of 1 to perform measurements for even-triggered ANR with UTRAN or GERAN.

UTRAN Event ANR CGI Timer

ANR.UtranEventAnrCgiTimer

A larger value of this parameter results in a longer time for UEs to perform CGI reading for event-triggered ANR with UTRAN, a larger success rate of CGI reading, and a longer scheduling latency affecting user experience. A smaller value of this parameter results in a shorter time for UEs to perform CGI reading for event-triggered ANR with UTRAN and a smaller success rate of CGI reading.

Parameter Name

Parameter ID

Setting Notes

GERAN Event ANR CGI Timer

ANR.GeranEventAnrCgiTimer

A larger value of this parameter results in a longer time for UEs to perform CGI reading for event-triggered ANR with GERAN, a larger success rate of CGI reading, and a longer scheduling latency affecting user experience. A smaller value of this parameter results in a shorter time for UEs to perform CGI reading for event-triggered ANR with GERAN and a smaller success rate of CGI reading.

Optimization Mode Strategy

ANR.OptModeStrategy

The UtranCtrlOptMode(UtranCtrlOptMode) option controls the delivery mode of optimization advice of neighbor relationships with UTRAN cells. This option takes effect if the ANR. OptMode parameter is set to CONTROLLED(CONTROLLED).  If this option is selected, the eNodeB reports the optimization advice to th U2000, and operators determine whether to take the advice on the U2000. The optimization is subject to the manual confirmation.  If this option is deselected, the eNodeB automatically handles the neighbor relationships with UTRAN cells. The GeranCtrlOptMode(GeranCtrlOptMode option controls the delivery mode of optimization advice of neighbor relationships with GERAN cells. This option takes effect if the ANR.OptMode parameter is set to CONTROLLED(CONTROLLED).  If this option is selected, the eNodeB reports the optimization advice to th U2000, and operators determine whether to take the advice on the U2000. The optimization is subject to the manual confirmation.  If this option is deselected, the eNodeB automatically handles the

Parameter Name

Parameter ID

Setting Notes

neighbor relationships with GERAN cells. Neighbor Cell ANR.NcellDelPunishPeriod Deletion Punish Period

A smaller value of this parameter indicates a shorter punishment period of removed neighbor relationships and results in a lower probability that removed neighbor relationships can be re-added to NRTs by ANR and more stable NRTs. A larger value of this parameter results in opposite effects.

ANR.UtranNcellDelPunNum UTRAN Neighbor Cell Deletion Punish Number

This parameter specifies the number of times penalty statistics about neighboring UTRAN cell deletion are collected. When a neighbor relationship with a UTRAN ce is deleted, it can be added to the NRT again if the number of times additions of the neighbor relationship are triggered is greater than or equal to the value of this parameter.

Statistic Period For NCell Class

IRATNCellClassMgt.StatPeriodForNCellClass

A larger value of this parameter results in higher stability of the neighbor relationship classification label status but lower timeliness of the classification results. A smaller value of this parameter results in lower stability of both the neighbor relationship classification label status and the neighbor relationship classification algorithm.

NCell Measure Number Threshold

IRATNCellClassMgt.NCellMeasNumThd

This parameter specifies the measurement number threshold for interRAT neighbor relationship classification management. If the number of times the target cell is measured within the statistical period for inter-RAT neighbor relationship classification reaches this threshold, this inter-RAT neighboring cell is a formal neighboring cell. A smaller value of this parameter results in a loose criteria for deciding whether a neighboring cell is formal. A larger value of this parameter results in a stricter

Parameter Name

Parameter ID

Setting Notes

criteria for deciding whether a neighboring cell is formal. Long DRX Cycle for Inter-RAT ANR

CellDrxSpecialPara.LongDrxCycleForInterRatAnr This parameter specifies the long DRX cycle for inter-RAT ANR. A larger value of this parameter results in a longer duration for UEs to perform CGI reading and a longer system delay. To ensure the CGI reading success rate, you are advised to set the long DRX cycle to a time greater than or equal to 256 ms.

Table 12-5 Parameters related to bind handover priorities Parameter Name

Statistic Period

Parameter ID

BlindNcellOpt.StatisticPeriod

Setting Notes

A larger value of this parameter results in more samples. For a network that serves a large number of UEs, reduce the value of this parameter to accelerate NRT updates.

BlindNcellOpt.SampleNumThd Sample Number Threshold

A larger value of this parameter results in a larger number of required samples within a measurement period and a lower probability of optimizing blind handover priorities.

Handover BlindNcellOpt.HoSuccRateThd Success Ratio Threshold

A larger value of this parameter results in a lower probability of allowing blind handovers to a neighboring cell. It is recommended that this parameter be set to a value not less than 98% to prevent failures of handovers for CSFB.

BlindNcellOpt.CsfbHoAttempRatioThd A larger value of this parameter results CSFB Handover in a lower probability of allowing blind Attemption handovers to a neighboring cell. Ratio Threshold Blind Handover Success

BlindNcellOpt.BlindHoSuccRateThd

A larger value of this parameter results in a higher probability of prohibiting blind handovers to a neighboring cell.

Parameter Name

Parameter ID

Setting Notes

Ratio Threshold

12.6 Troubleshooting Fault Description

A coverage-based handover from an E-UTRAN cell to a UTRAN cell fails. Fault Handling

To check whether this handover failure is caused by an incorrect neighbor relationship configuration, perform the following steps: 1. Start a Uu interface tracing task for the source cell on the U2000 client. In the tracing result, check whether the eNodeB has delivered a handover command, which carries the IE mobilityFromEUTRACommand. 

If the eNodeB has not delivered the handover command, go to 2.



If the eNodeB has delivered the handover command, contact Huawei technical support.

2. Run the LST UTRANEXTERNALCELL command to check whether the target cell has been configured as an external cell on the source eNodeB. Run the LST UTRANNCELL command to check whether the neighbor relationship between the source and target cells has been configured on the source cell. 

If they have not been configured, go to 3.



If they have been configured, contact Huawei technical support. NOTE: In RAN sharing with common carriers mode, if the UE subscribes to a secondary operator, query the UtranExternalCellPlmn MO to check whether the PLMN list has been configured. Configure the PLMN list if it has not been configured.

3. Check whether the switch for event-triggered ANR with UTRAN has been set to on. 

If the switch is off, set it to on.



If the switch is on, go to 4.

4. Check whether the UE supports ANR with UTRAN. 

If the UE supports ANR with UTRAN, contact Huawei technical support.



If the UE does not support ANR with UTRAN, no further action is required.

13

Parameters

Table 13-1 Parameters MO

Parameter ID

MML Command

Feature ID

Fe

ANR

StaPeriodForIRatNRTDel

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ANR

StaNumForIRatNRTDel

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

NCellClassMgt

HoSuccThd

MOD NCELLCLASSMGT LST NCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

NCellClassMgt

IntraRatNcellMgtMode

MOD NCELLCLASSMGT LST NCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

IRATNCellClassMgt

RatType

LST IRATNCELLCLASSMGT MOD IRATNCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

IRATNCellClassMgt

StatPeriodForNcellClass

MOD IRATNCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

MO

Parameter ID

MML Command

Feature ID

Fe

LST IRATNCELLCLASSMGT

IRATNCellClassMgt

NCellMeasNumThd

MOD IRATNCELLCLASSMGT LST IRATNCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

CellAlgoSwitch

NCellClassMgtSw

MOD CELLALGOSWITCH LST CELLALGOSWITCH

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

MO

Parameter ID

MML Command

Feature ID

Fe

MO

Parameter ID

MML Command

Feature ID

Fe

NCellParaCfg

RatType

LST NCELLPARACFG MOD NCELLPARACFG

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

NCellParaCfg

HoStatThd

MOD NCELLPARACFG LST NCELLPARACFG

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

NCellParaCfg

HoSuccThd

MOD NCELLPARACFG LST NCELLPARACFG

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

NCellParaCfg

NCellOdDisThd

MOD NCELLPARACFG LST NCELLPARACFG

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

MO

Parameter ID

MML Command

Feature ID

Fe

CellDrxSpecialPara

LongDrxCycleForIntraRatAnr MOD CELLDRXSPECIALPARA LST CELLDRXSPECIALPARA

LBFD-002017 / TDLBFD-002017

DRX

CellDrxSpecialPara

LongDrxCycleForInterRatAnr MOD CELLDRXSPECIALPARA LST CELLDRXSPECIALPARA

LBFD-002017 / TDLBFD-002017

DRX

MO

Parameter ID

MML Command

Feature ID

Fe

CellDrxSpecialPara

FddAnrDrxInactivityTimer

MOD CELLDRXSPECIALPARA LST CELLDRXSPECIALPARA

LBFD-002017

DRX

CellAlgoSwitch

AnrAlgoSwitch

MOD CELLALGOSWITCH LST CELLALGOSWITCH

LOFD002001/TDLOFD002001 LOFD002002/TDLOFD002002 LOFD081225/TDLOFD111210

Autom Relatio Inter-R Neigh Classi Manag

MO

GlobalProcSwitch

Parameter ID

X2BasedUptNcellCfgSwitch

MML Command

Feature ID

Fe

MOD LOFDAutom GLOBALPROCSWITCH 002001/TDLOFD- Relatio LST GLOBALPROCSWITCH 002001

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

HoSucRateForCgiRead

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ENodeBAlgoSwitch

AnrSwitch

MOD LOFD-002001 / Autom ENODEBALGOSWITCH TDLOFD-002001 Relatio LST ENODEBALGOSWITCH LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

MO

Parameter ID

MML Command

Feature ID

Fe

MO

Parameter ID

MML Command

Feature ID

Fe

NCellParaCfg

NcellNumForAnr

MOD NCELLPARACFG LST NCELLPARACFG

LOFD-002001 / Autom TDLOFD-002001 Relatio

EutranInterNFreq

NcellNumForAnr

ADD EUTRANINTERNFREQ LOFD-002001 / Autom TDLOFD-002001 Relatio MOD EUTRANINTERNFREQ LST EUTRANINTERNFREQ

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

NcellCaThdForNRTDel

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

StatPeriodCoeff

MOD ANR LST ANR

LOFDAutom 002001/TDLOFD- Relatio 002001 Inter-R LOFD002002/TDLOFD002002

NCellClassMgt

CaSCellCfgThd

MOD NCELLCLASSMGT LST NCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

CellAlgoSwitch

AnrFunctionSwitch

MOD CELLALGOSWITCH LST CELLALGOSWITCH

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

SmartPreallocationMode

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

EventAnrWithVoipMode

MOD ANR LST ANR

LOFDInter-R 002002/TDLOFD002002

ANR

CaUeChoseMode

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

EutranExternalCell

Parameter ID

CtrlMode

EutranIntraFreqNCell CtrlMode

MML Command

ADD EUTRANEXTERNALCELL MOD EUTRANEXTERNALCELL LST EUTRANEXTERNALCELL

Feature ID

Fe

LOFD-002001 / Autom TDLOFD-002001 Relatio

ADD LBFD-00201804 / Distan EUTRANINTRAFREQNCELL TDLBFDfreque 00201804 MOD EUTRANINTRAFREQNCELL LST EUTRANINTRAFREQNCELL

MO

Parameter ID

MML Command

Feature ID

Fe

EutranInterFreqNCell CtrlMode

ADD LOFD-002001 EUTRANINTERFREQNCELL MOD EUTRANINTERFREQNCELL LST EUTRANINTERFREQNCELL

Autom Relatio

EutranBlkNCell

CtrlMode

ADD EUTRANBLKNCELL MOD EUTRANBLKNCELL LST EUTRANBLKNCELL

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

ANR

OptMode

MOD ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

ANR

Parameter ID

OptModeStrategy

MML Command

Feature ID

Fe

LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

AnrControlledHoStrategy

MOD ANR LST ANR

LOFD-001022 / TDLOFD-001022 LOFD-001023 / TDLOFD-001023 LOFD-001033 / TDLOFD-001033 LOFD-001034 / TDLOFD-001034 LOFD-001035 / TDLOFD-001035 LOFD-001019 / TDLOFD-001019 LOFD-001020 / TDLOFD-001020 LOFD-001021 / TDLOFD-001021 LOFD-001032 / TDLOFD-001032 LOFD-001044 / TDLOFD-001044 LOFD-001045 / TDLOFD-001045 LOFD-002001 / TDLOFD-002001 LOFD-002002 / TDLOFD-002002

SRVC SRVC CS Fa UTRA CS Fa GERA CS Fa CDMA PS Int betwe and U PS Int betwe and G PS Int betwe and C Intra-L Balanc Inter-R Sharin Inter-R Sharin Autom Relatio Inter-R

Cell

IntraFreqAnrInd

ADD CELL MOD CELL LST CELL

LOFD-002001 / Autom TDLOFD-002001 Relatio

EutranInterNFreq

AnrInd

ADD EUTRANINTERNFREQ LOFD-002001 / Autom TDLOFD-002001 Relatio MOD EUTRANINTERNFREQ LST EUTRANINTERNFREQ

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

EventAnrMode

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

NrtDelMode

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

StatisticPeriodForNRTDel

MOD ANR LST ANR

LOFDAutom 002001/TDLOFD- Relatio 002001

ANR

NcellHoStatNum

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

DelCellThd

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

StatisticPeriod

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

StatisticNumForNRTDel

MOD ANR LST ANR

LOFDAutom 002001/TDLOFD- Relatio 002001

ANR

EutranNcellDelPunNum

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

NcellDelPunishPeriod

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

ANR

NoHoSetMode

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

NoHoSetThd

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

FastAnrCheckPeriod

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

ANR

FastAnrIntraRatMeasUeNum MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

GlobalProcSwitch

VoipWithGapMode

MOD LOFD-002001 / GLOBALPROCSWITCH TDLOFD-002001 LST GLOBALPROCSWITCH LOFD-002002 / TDLOFD-002002 LOFD-002007 / TDLOFD-002007 MRFD-231808

ANR

FastAnrRprtInterval

MOD ANR LST ANR

Autom Relatio Inter-R PCI C Detec Optim GSM a Zone Optim

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

FastAnrRprtAmount

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFD-002002 / Inter-R TDLOFD-002002

ANR

FastAnrRsrpThd

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

FastAnrIntraRatUeNumThd

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

ANR

FastAnrMode

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio LOFDInter-R 002002/TDLOFD002002

MO

Parameter ID

MML Command

Feature ID

Fe

GlobalProcSwitch

X2ServedCellType

MOD None GLOBALPROCSWITCH LST GLOBALPROCSWITCH

None

eNodeBFunction

eNodeBId

ADD ENODEBFUNCTION MOD ENODEBFUNCTION LST ENODEBFUNCTION

None

None

Cell

CellId

ADD CELL MOD CELL DSP CELLCAMCSTATUS LST CELL

LBFD-002009 / TDLBFD-002009

Broad inform

Cell

LocalCellId

ACT CELL ADD CELL ADD CELLBAND BLK CELL DEA CELL DSP CELL DSP CELLCALIBRATION

None

None

MO

Parameter ID

MML Command

Feature ID

Fe

DSP CELLCAMCSTATUS DSP CELLPHYTOPO DSP CELLULCOMPCLUSTER DSP DDCELLGROUP DSP LIOPTRULE DSP PRIBBPADJUST LST CELL LST CELLBAND MOD CELL RMV CELL RMV CELLBAND RMV CELLNRT RST EUCELLRES STR CELLRFLOOPBACK STR CELLSELFTEST STR LRTWPRTTST STR PRIBBPADJUST UBL CELL DSP LRTWPRTTST DSP PRIBBPRESINFO Cell

PhyCellId

ADD CELL MOD CELL LST CELL

LOFD-001051 LBFD-002009 / TDLBFD-002009

Comp Broad inform

Cell

DlEarfcn

ADD CELL MOD CELL LST CELL

LBFD-002009 / TDLBFD-002009 LBFD-00201801 / TDLBFD00201801 LBFD-00201803 / TDLBFD00201803 / LAOFD-111305

Broad inform Cover Intra-f Hando Cell S Re-se LAOF 11130

GlobalProcSwitch

X2BasedUptENodeBPolicy

MOD None GLOBALPROCSWITCH LST GLOBALPROCSWITCH

None

MO

Parameter ID

MML Command

Feature ID

Fe

UtranExternalCell

CtrlMode

ADD UTRANEXTERNALCELL MOD UTRANEXTERNALCELL LST UTRANEXTERNALCELL

LOFD-002002 / LOFD-002002

Inter-R

UtranNCell

CtrlMode

ADD UTRANNCELL MOD UTRANNCELL LST UTRANNCELL

LOFD-002002

Inter-R

MO

Parameter ID

MML Command

Feature ID

Fe

UtranBlkNCell

CtrlMode

ADD UTRANBLKNCELL MOD UTRANBLKNCELL LST UTRANBLKNCELL

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

GeranExternalCell

CtrlMode

ADD GERANEXTERNALCELL MOD GERANEXTERNALCELL LST GERANEXTERNALCELL

LOFD-002002 / Inter-R TDLOFD-002002

GeranNcell

CtrlMode

ADD GERANNCELL MOD GERANNCELL LST GERANNCELL

LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

GeranNfreqGroup

AnrInd

ADD GERANNFREQGROUP LOFD-002002 / Inter-R TDLOFD-002002 MOD GERANNFREQGROUP LST GERANNFREQGROUP

UtranNFreq

AnrInd

ADD UTRANNFREQ MOD UTRANNFREQ LST UTRANNFREQ

ENodeBAlgoSwitch

HoSignalingOptSwitch

MOD LBFD-00201802 / ENODEBALGOSWITCH TDLBFDLST ENODEBALGOSWITCH 00201802 LOFD-001019 / TDLOFD-001019 LOFD-001020 / TDLOFD-001020

LOFD-002002 / Inter-R TDLOFD-002002

Cover Inter-f Hando PS Int betwe and U

MO

Parameter ID

MML Command

Feature ID

LBFD-00201801 / TDLBFD00201801 LBFD-00201804 / TDLBFD00201804 LBFD-00201805 / TDLBFD00201805

Fe

PS Int betwe and G Cover Intra-f Hando Distan freque Servic freque

MO

Parameter ID

MML Command

Feature ID

Fe

MO

GlobalProcSwitch

Parameter ID

ProtocolMsgOptSwitch

MML Command

Feature ID

MOD LOFDGLOBALPROCSWITCH 001022/TDLOFDLST GLOBALPROCSWITCH 001022 LOFD001023/TDLOFD001023 LOFD081283/TDLOFD081203 LOFD001053/TDLOFD001053 LOFD001020/TDLOFD001020

Fe

SRVC SRVC Ultra-F GERA Flash GERA PS Int betwe and G

MO

ANR

Parameter ID

UtranEventAnrCgiTimer

MML Command

MOD ANR LST ANR

Feature ID

Fe

LOFDInter-R 002002/TDLOFD002002

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

GeranEventAnrCgiTimer

MOD ANR LST ANR

LOFDInter-R 002002/TDLOFD002002

ANR

UtranEventAnrMode

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ANR

GeranEventAnrMode

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ANR

UtranNcellDelPunNum

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

ANR

FastAnrInterRatMeasUeNum MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ANR

FastAnrRscpThd

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ANR

FastAnrRssiThd

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ANR

FastAnrInterRatUeNumThd

MOD ANR LST ANR

LOFD-002002 / Inter-R TDLOFD-002002

ENodeBAlgoSwitch

BlindNcellOptSwitch

MOD LOFDInter-R ENODEBALGOSWITCH 002002/TDLOFDLST ENODEBALGOSWITCH 002002

BlindNcellOpt

StatisticPeriod

MOD BLINDNCELLOPT LST BLINDNCELLOPT

LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

UtranNFreq

ContinuCoverageIndication

ADD UTRANNFREQ MOD UTRANNFREQ LST UTRANNFREQ

None

None

GeranNfreqGroup

ContinuCoverageIndication

ADD GERANNFREQGROUP None MOD GERANNFREQGROUP LST GERANNFREQGROUP

None

BlindNcellOpt

SampleNumThd

MOD BLINDNCELLOPT LST BLINDNCELLOPT

LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

BlindNcellOpt

CsfbHoAttempRatioThd

MOD BLINDNCELLOPT LST BLINDNCELLOPT

LOFD-002002 / Inter-R TDLOFD-002002

BlindNcellOpt

HoSuccRateThd

MOD BLINDNCELLOPT LST BLINDNCELLOPT

LOFD-002002 / Inter-R TDLOFD-002002

BlindNcellOpt

BlindHoSuccRateThd

MOD BLINDNCELLOPT LST BLINDNCELLOPT

LOFD-002002 / Inter-R TDLOFD-002002

MO

Parameter ID

MML Command

Feature ID

Fe

UtranNCell

NCellMeasPriority

ADD UTRANNCELL DSP UTRANEXTENDEDNCELL LST UTRANNCELL

LOFD002002/TDLOFD002002 LOFD001022/TDLOFD001022 LOFD001033/TDLOFD001033 LOFD001052/TDLOFD001052 LOFD001019/TDLOFD001019 LOFD001043/TDLOFD001043 LOFD001072/TDLOFD001072

Inter-R SRVC CS Fa UTRA Flash UTRA PS Int betwe and U Servic RAT h UTRA Distan RAT h UTRA

GeranNcell

NCellMeasPriority

ADD GERANNCELL DSP GERANEXTENDEDNCELL LST GERANNCELL

LOFDInter-R 002002/TDLOFD- Flash 002002 GERA LOFD001053/TDLOFD001053

ENodeBAlgoSwitch

NCellRankingSwitch

MOD LOFDENODEBALGOSWITCH 002002/TDLOFDLST ENODEBALGOSWITCH 002002 LOFD001022/TDLOFD001022 LOFD001033/TDLOFD001033 LOFD001052/TDLOFD001052

Inter-R SRVC CS Fa UTRA Flash UTRA Flash GERA PS Int betwe and U

MO

Parameter ID

MML Command

Feature ID

Fe

LOFD001053/TDLOFD001053 LOFD001019/TDLOFD001019 LOFD001043/TDLOFD001043 LOFD001072/TDLOFD001072

Servic RAT h UTRA Distan RAT h UTRA

Inter-R SRVC CS Fa UTRA Flash UTRA Flash GERA PS Int betwe and U Servic RAT h UTRA Distan RAT h UTRA

ANR

PeriodForNCellRanking

MOD ANR LST ANR

LOFD002002/TDLOFD002002 LOFD001022/TDLOFD001022 LOFD001033/TDLOFD001033 LOFD001052/TDLOFD001052 LOFD001053/TDLOFD001053 LOFD001019/TDLOFD001019 LOFD001043/TDLOFD001043 LOFD001072/TDLOFD001072

NCellClassMgt

StatPeriodForNcellClass

MOD NCELLCLASSMGT LST NCELLCLASSMGT

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

MO

Parameter ID

MML Command

Feature ID

Fe

EutranIntraFreqNCell NCellClassLabel

ADD LOFDNeigh EUTRANINTRAFREQNCELL 081225/TDLOFD- Classi 111210 Manag MOD EUTRANINTRAFREQNCELL LST EUTRANINTRAFREQNCELL

EutranInterFreqNCell NCellClassLabel

ADD LOFDNeigh EUTRANINTERFREQNCELL 081225/TDLOFD- Classi 111210 Manag MOD EUTRANINTERFREQNCELL LST EUTRANINTERFREQNCELL

NCellClassMgt

MOD NCELLCLASSMGT LST NCELLCLASSMGT

HoAttemptThd

LOFDNeigh 081225/TDLOFD- Classi 111210 Manag

MO

Parameter ID

MML Command

Feature ID

Fe

EutranIntraFreqNCell AttachCellSwitch

ADD LAOFD-081233 EUTRANINTRAFREQNCELL MOD EUTRANINTRAFREQNCELL LST EUTRANINTRAFREQNCELL

Dynam

EutranInterFreqNCell BlindHoPriority

ADD EUTRANINTERFREQNCELL MOD EUTRANINTERFREQNCELL LST EUTRANINTERFREQNCELL

LBFD-00201802 / TDLBFD00201802 LBFD-00201804 / TDLBFD00201804 TDLOFD-001050

Cover Inter-f Hando Distan freque Mobilit TDD a

EutranInterFreqNCell OverlapInd

ADD EUTRANINTERFREQNCELL MOD EUTRANINTERFREQNCELL DSP EUTRANEXTENDEDNCELL DSP EUTRANINTERFREQNCELL

LOFD-001032 / TDLOFD-001032 LOFD-002001 / TDLOFD-002001

Intra-L Balanc Autom Relatio

MO

Parameter ID

MML Command

Feature ID

Fe

LST EUTRANINTERFREQNCELL CaGroupSCellCfg

SCellBlindCfgFlag

ADD CAGROUPSCELLCFG LAOFDMOD CAGROUPSCELLCFG 00100101 LST CAGROUPSCELLCFG LAOFD00100102 LAOFD00100201 / TDLAOFD001002 LAOFD00100202 / TDLAOFD00100102 LAOFD-070201 / TDLAOFD070201 LAOFD-070202 TDLAOFD00100111

Intra-B Aggre Downl 20MH Inter-B Aggre Downl 20MH Carrie for Do 40MH Suppo Categ Flexib Multip Inter-e based BBU Intra-b Aggre Downl 30MH

Cell

CellRadius

ADD CELL MOD CELL LST CELL

LBFD-002010 / TDLBFD-002010 LBFD-002010 / TDLBFD-002010 / LOFD-081223

Rando Proce Rando Proce Cell A beyon

Cell

HighSpeedFlag

ADD CELL MOD CELL LST CELL

LOFD-001007 / High S TDLOFD-001007 Ultra H LOFD-001008 Mobilit

MO

Parameter ID

MML Command

Feature ID

Fe

Cell

PreambleFmt

ADD CELL MOD CELL LST CELL

LBFD-002010 / TDLBFD-002010

Rando Proce

ANR

StartTime

MOD ANR LST ANR

LOFD-002007 / PCI C TDLOFD-002007 Detec Optim

ANR

StopTime

MOD ANR LST ANR

LOFDPCI C 002007/TDLOFD- Detec 002007 Optim

ENodeBAlgoSwitch

PciConflictAlmSwitch

MOD LOFD-002007 / PCI C ENODEBALGOSWITCH TDLOFD-002007 Detec Optim LST ENODEBALGOSWITCH

MO

Parameter ID

MML Command

Feature ID

Fe

ENodeBAlgoSwitch

PciConflictDetectSwitch

MOD LOFD-002007 / PCI C ENODEBALGOSWITCH TDLOFD-002007 Detec Optim LST ENODEBALGOSWITCH

ENodeBAlgoSwitch

RanSharingAnrSwitch

MOD LOFD-002001 / ENODEBALGOSWITCH TDLOFD-002001 LST ENODEBALGOSWITCH LOFD-002002 / TDLOFD-002002 LOFD-001036 / TDLOFD-001036 LOFD-001037 / TDLOFD-001037 LOFD-070206

Autom Relatio Inter-R RAN S Comm RAN S Dedica Hybrid

MO

Parameter ID

MML Command

Feature ID

Fe

Cell

IntraFreqRanSharingInd

ADD CELL MOD CELL LST CELL

LOFDAutom 002001/TDLOFD- Relatio 002001

EutranInterNFreq

InterFreqRanSharingInd

ADD EUTRANINTERNFREQ LOFDAutom 002001/TDLOFDRelatio MOD 002001 EUTRANINTERNFREQ LST EUTRANINTERNFREQ

MO

Parameter ID

MML Command

Feature ID

Fe

GeranNfreqGroup

GeranRanSharingInd

ADD GERANNFREQGROUP LOFDInter-R 002002/TDLOFDMOD 002002 GERANNFREQGROUP LST GERANNFREQGROUP

UtranNFreq

UtranRanSharingInd

ADD UTRANNFREQ MOD UTRANNFREQ LST UTRANNFREQ

LOFDInter-R 002002/TDLOFD002002

NCellPlmnList

Mcc

ADD NCELLPLMNLIST LST NCELLPLMNLIST MOD NCELLPLMNLIST RMV NCELLPLMNLIST

None

None

NCellPlmnList

Mnc

ADD NCELLPLMNLIST LST NCELLPLMNLIST MOD NCELLPLMNLIST RMV NCELLPLMNLIST

None

None

MO

Parameter ID

MML Command

Feature ID

Fe

NCellPlmnList

RatType

ADD NCELLPLMNLIST LST NCELLPLMNLIST MOD NCELLPLMNLIST RMV NCELLPLMNLIST

None

None

NCellPlmnList

PlmnListType

ADD NCELLPLMNLIST MOD NCELLPLMNLIST LST NCELLPLMNLIST

None

None

ANR

NcellHoForNRTDelThd

MOD ANR LST ANR

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

Parameter ID

MML Command

Feature ID

Fe

EutranIntraFreqNCell NoHoFlag

ADD LBFD-00201801 / Cover EUTRANINTRAFREQNCELL TDLBFDIntra-f 00201801 Hando MOD EUTRANINTRAFREQNCELL DSP EUTRANEXTENDEDNCELL LST EUTRANINTRAFREQNCELL

EutranIntraFreqNCell NoRmvFlag

ADD LOFD-002001 EUTRANINTRAFREQNCELL MOD EUTRANINTRAFREQNCELL LST EUTRANINTRAFREQNCELL

Autom Relatio

EutranInterFreqNCell NoHoFlag

ADD EUTRANINTERFREQNCELL MOD EUTRANINTERFREQNCELL LST EUTRANINTERFREQNCELL

LBFD-00201802 / TDLBFD00201802 LBFD-00201804 / TDLBFD00201804 LBFD-00201805 / TDLBFD00201805 LOFD-002012 / TDLOFD-002012

Cover Inter-f Hando Distan freque Servic freque Cell O and C

EutranInterFreqNCell NoRmvFlag

ADD EUTRANINTERFREQNCELL MOD EUTRANINTERFREQNCELL LST EUTRANINTERFREQNCELL

LOFD-002001 / TDLOFD-002001 LOFD-002012 / TDLOFD-002012

Autom Relatio Cell O and C

IntraFreqBlkCell

ADD INTRAFREQBLKCELL LST INTRAFREQBLKCELL MOD INTRAFREQBLKCELL RMV INTRAFREQBLKCELL

None

None

LocalCellId

MO

Parameter ID

MML Command

Feature ID

Fe

IntraFreqBlkCell

PhyCellId

ADD INTRAFREQBLKCELL LST INTRAFREQBLKCELL MOD INTRAFREQBLKCELL RMV INTRAFREQBLKCELL

LBFD-002009 / TDLBFD-002009 LBFD-00201801 / TDLBFD00201801

Broad inform Cover Intra-f Hando

InterFreqBlkCell

LocalCellId

ADD INTERFREQBLKCELL LST INTERFREQBLKCELL MOD INTERFREQBLKCELL RMV INTERFREQBLKCELL

None

None

InterFreqBlkCell

DlEarfcn

ADD INTERFREQBLKCELL LST INTERFREQBLKCELL MOD INTERFREQBLKCELL RMV INTERFREQBLKCELL

LBFD-00201803 / TDLBFD00201803 LBFD-00201802 / TDLBFD00201802

Cell S Resele Cover Inter-f Hando

InterFreqBlkCell

PhyCellId

ADD INTERFREQBLKCELL LST INTERFREQBLKCELL MOD INTERFREQBLKCELL RMV INTERFREQBLKCELL

LBFD-00201802 / TDLBFD00201802 LBFD-00201804 / TDLBFD00201804 LBFD-00201805 / TDLBFD00201805

Cover Inter-f Hando Distan freque Servic freque

Cell

FreqPriorityForAnr

ADD CELL MOD CELL LST CELL

LOFD-002001 / Autom TDLOFD-002001 Relatio

MO

EutranInterNFreq

Parameter ID

FreqPriorityForAnr

CSFallBackPolicyCfg CsfbHoPolicyCfg

MML Command

Feature ID

Fe

ADD EUTRANINTERNFREQ LOFD-002001 / Autom TDLOFD-002001 Relatio MOD EUTRANINTERNFREQ LST EUTRANINTERNFREQ

MOD CSFALLBACKPOLICYCFG LST CSFALLBACKPOLICYCFG

LOFD-001033 / TDLOFD-001033 LOFD-001034 / TDLOFD-001034 LOFD-001088 / TDLOFD-001088

CS Fa UTRA CS Fa GERA CS Fa to UTR

MO

Parameter ID

MML Command

Feature ID

Fe

LOFD-001089 / CS Fa TDLOFD-001089 to GER UtranNCell

NoHoFlag

ADD UTRANNCELL MOD UTRANNCELL DSP UTRANEXTENDEDNCELL LST UTRANNCELL

LOFD-001019 / PS Int TDLOFD-001019 betwe and U

UtranNCell

NoRmvFlag

ADD UTRANNCELL MOD UTRANNCELL LST UTRANNCELL

LOFD-002002 / Inter-R TDLOFD-002002

GeranNcell

NoHoFlag

ADD GERANNCELL MOD GERANNCELL DSP GERANEXTENDEDNCELL LST GERANNCELL

LOFD-001020 / PS Int TDLOFD-001020 betwe and G

GeranNcell

NoRmvFlag

ADD GERANNCELL MOD GERANNCELL LST GERANNCELL

LOFD-002002

UtranNFreq

FreqPriorityForAnr

ADD UTRANNFREQ MOD UTRANNFREQ LST UTRANNFREQ

LOFD-002002 / Inter-R TDLOFD-002002

Inter-R

MO

GeranNfreqGroup

Parameter ID

FreqPriorityForAnr

MML Command

Feature ID

Fe

ADD GERANNFREQGROUP LOFD-002002 / Inter-R TDLOFD-002002 MOD GERANNFREQGROUP LST GERANNFREQGROUP

MO

14

Parameter ID

MML Command

Feature ID

Counters

Table 14-1 Counters Counter ID

Counter Name

Counter Feature ID Feature Name Description

1526726989 L.IRATHO.E2W.PrepAttOut

Number of inter-RAT handover attempts from EUTRAN to WCDMA network

Multimode: MRFD101401 GSM: None UMTS: None LTE: LOFD001019 LOFD001022 LOFD001033 TDLOFD001019 TDLOFD001022 TDLOFD001033

UL Unified Video Steering PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN CS Fallback to UTRAN PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN CS Fallback to UTRAN

1526726990 L.IRATHO.E2W.ExecAttOut

Number of inter-RAT handover executions

Multimode: MRFD101401

UL Unified Video Steering

Fe

Counter ID

Counter Name

Counter Feature ID Feature Name Description

from EUTRAN to WCDMA network

GSM: None UMTS: None LTE: LOFD001019 LOFD001022 LOFD001033 TDLOFD001019 TDLOFD001022 TDLOFD001033

PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN CS Fallback to UTRAN PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN CS Fallback to UTRAN

1526726991 L.IRATHO.E2W.ExecSuccOut

Number of successful inter-RAT handovers from EUTRAN to WCDMA network

Multimode: MRFD101401 GSM: None UMTS: None LTE: LOFD001019 LOFD001022 LOFD001033 TDLOFD001019 TDLOFD001022 TDLOFD001033

UL Unified Video Steering PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN CS Fallback to UTRAN PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN CS Fallback to UTRAN

1526726992 L.IRATHO.E2G.PrepAttOut

Number of inter-RAT handover attempts

Multimode: None

PS InterRAT Mobility between E-

Counter ID

Counter Name

Counter Feature ID Feature Name Description

from EUTRAN to GERAN

GSM: None UMTS: None LTE: LOFD001020 LOFD001023 LOFD001034 TDLOFD001020 TDLOFD001023 TDLOFD001034

UTRAN and GERAN SRVCC to GERAN CS Fallback to GERAN PS InterRAT Mobility between EUTRAN and GERAN SRVCC to GERAN CS Fallback to GERAN

1526726993 L.IRATHO.E2G.ExecAttOut

Number of inter-RAT handover executions from EUTRAN to GERAN

Multimode: None GSM: None UMTS: None LTE: LOFD001020 LOFD001023 LOFD001034 TDLOFD001020 TDLOFD001023 TDLOFD001034

PS InterRAT Mobility between EUTRAN and GERAN SRVCC to GERAN CS Fallback to GERAN PS InterRAT Mobility between EUTRAN and GERAN SRVCC to GERAN CS Fallback to GERAN

1526726994 L.IRATHO.E2G.ExecSuccOut

Number of successful inter-RAT handovers from E-

Multimode: None GSM: None

PS InterRAT Mobility between EUTRAN and GERAN

Counter ID

Counter Name

Counter Feature ID Feature Name Description

UTRAN to GERAN

UMTS: None LTE: LOFD001020 LOFD001023 LOFD001034 TDLOFD001020 TDLOFD001023 TDLOFD001034

SRVCC to GERAN CS Fallback to GERAN PS InterRAT Mobility between EUTRAN and GERAN SRVCC to GERAN CS Fallback to GERAN

1526726995 L.HHO.IntraeNB.IntraFreq.PrepAttOut

Number of intraeNodeB intrafrequency outgoing handover attempts in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

1526726996 L.HHO.IntraeNB.IntraFreq.ExecAttOut

Number of intraeNodeB intrafrequency outgoing handovers executions in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

Counter ID

Counter Name

Counter Feature ID Feature Name Description

1526726997 L.HHO.IntraeNB.IntraFreq.ExecSuccOut Number of successful intraeNodeB intrafrequency outgoing handovers in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

1526726998 L.HHO.IntraeNB.InterFreq.PrepAttOut

Number of intraeNodeB interfrequency outgoing handover attempts in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805 TDLBFD00201805

Coverage Based Interfrequency Handover Coverage Based Interfrequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Interfrequency Handover Service Based Interfrequency Handover

1526726999 L.HHO.IntraeNB.InterFreq.ExecAttOut

Number of intraeNodeB interfrequency outgoing handovers

Multimode: None GSM: None UMTS: None

Coverage Based Interfrequency Handover Coverage Based Inter-

Counter ID

Counter Name

Counter Feature ID Feature Name Description

executions in a cell

LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805 TDLBFD00201805

frequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Interfrequency Handover Service Based Interfrequency Handover

1526727000 L.HHO.IntraeNB.InterFreq.ExecSuccOut Number of successful intraeNodeB interfrequency outgoing handovers in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805 TDLBFD00201805

Coverage Based Interfrequency Handover Coverage Based Interfrequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Interfrequency Handover Service Based Interfrequency Handover

Counter ID

Counter Name

Counter Feature ID Feature Name Description

1526727001 L.HHO.IntereNB.IntraFreq.PrepAttOut

Number of intereNodeB intrafrequency outgoing handover attempts in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

1526727002 L.HHO.IntereNB.IntraFreq.ExecAttOut

Number of intereNodeB intrafrequency outgoing handovers executions in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

1526727003 L.HHO.IntereNB.IntraFreq.ExecSuccOut Number of successful intereNodeB intrafrequency outgoing handovers in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

1526727004 L.HHO.IntereNB.InterFreq.PrepAttOut

Multimode: None GSM: None

Coverage Based Interfrequency Handover Coverage Based Inter-

Number of intereNodeB interfrequency outgoing

Counter ID

Counter Name

1526727005 L.HHO.IntereNB.InterFreq.ExecAttOut

Counter Feature ID Feature Name Description

handover attempts in a cell

UMTS: None LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805 TDLBFD00201805

frequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Interfrequency Handover Service Based Interfrequency Handover

Number of intereNodeB interfrequency outgoing handovers executions in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805 TDLBFD00201805

Coverage Based Interfrequency Handover Coverage Based Interfrequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Interfrequency Handover Service Based Interfrequency Handover

Counter ID

Counter Name

Counter Feature ID Feature Name Description

1526727006 L.HHO.IntereNB.InterFreq.ExecSuccOut Number of successful intereNodeB interfrequency outgoing handovers in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805 TDLBFD00201805

Coverage Based Interfrequency Handover Coverage Based Interfrequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Interfrequency Handover Service Based Interfrequency Handover

1526727226 L.IRATHO.E2T.PrepAttOut

Number of inter-RAT Handover Attempts from EUTRAN to TDSCDMA network

Multimode: None GSM: None UMTS: None LTE: LOFD001019 LOFD001022 TDLOFD001019 TDLOFD001022

PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN

1526727227 L.IRATHO.E2T.ExecAttOut

Number of inter-RAT handover

Multimode: None

PS InterRAT Mobility between E-

Counter ID

Counter Name

Counter Feature ID Feature Name Description

executions from EUTRAN to TDSCDMA network

GSM: None UMTS: None LTE: LOFD001019 LOFD001022 TDLOFD001019 TDLOFD001022

UTRAN and UTRAN SRVCC to UTRAN PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN

1526727228 L.IRATHO.E2T.ExecSuccOut

Number of successful inter-RAT handovers from EUTRAN to TDSCDMA network

Multimode: None GSM: None UMTS: None LTE: LOFD001019 LOFD001022 TDLOFD001019 TDLOFD001022

PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN PS InterRAT Mobility between EUTRAN and UTRAN SRVCC to UTRAN

1526727546 L.E-RAB.AbnormRel

Total number of abnormal releases of activated E-RABs initiated by the eNodeB

Multimode: None GSM: None UMTS: None LTE: LBFD002008 TDLBFD002008

Radio Bearer Management Radio Bearer Management

Counter ID

Counter Name

Counter Feature ID Feature Name Description

1526727547 L.E-RAB.NormRel

Total number of normal ERAB releases initiated by the eNodeB in a cell

Multimode: None GSM: None UMTS: None LTE: LBFD002008 TDLBFD002008

Radio Bearer Management Radio Bearer Management

1526728398 L.IntraFreqHO.NoNRT

Number of intrafrequency handover initiation failures because the adjacent cell is not on the NRT of the source cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201801 TDLBFD00201801

Coverage Based Intrafrequency Handover Coverage Based Intrafrequency Handover

1526728399 L.InterFreqHO.NoNRT

Number of interfrequency handover initiation failures because the target cell is not configured as a neighboring cell for the source cell

Multimode: None GSM: None UMTS: None LTE: LBFD00201802 TDLBFD00201802 LBFD00201804 TDLBFD00201804 LBFD00201805

Coverage Based Interfrequency Handover Coverage Based Interfrequency Handover Distance Based Interfrequency Handover Distance Based Interfrequency Handover Service Based Inter-

Counter ID

Counter Name

Counter Feature ID Feature Name Description

TDLBFD00201805 LOFD002001 TDLOFD002001 LOFD002002 TDLOFD002002

frequency Handover Service Based Interfrequency Handover Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR) Inter-RAT ANR Inter-RAT ANR

1526728468 L.IRATHO.E2W.NoNRT

Number of inter-RAT initiation failures from EUTRAN to WCDMA network because the adjacent cell is not on the NRT of the source cell

Multimode: None GSM: None UMTS: None LTE: LOFD001019 LOFD002002 TDLOFD001019 TDLBFD002002 LOFD001022 TDLOFD001022

PS InterRAT Mobility between EUTRAN and UTRAN Inter-RAT ANR PS InterRAT Mobility between EUTRAN and UTRAN Transport Channel Management SRVCC to UTRAN SRVCC to UTRAN

1526728469 L.IRATHO.E2T.NoNRT

Number of inter-RAT initiation failures from E-

Multimode: None

PS InterRAT Mobility between E-

Counter ID

Counter Name

Counter Feature ID Feature Name Description

UTRAN to TDSCDMA network because the adjacent cell is not on the NRT of the source cell

GSM: None UMTS: None LTE: LOFD001019 LOFD002002 TDLOFD001019 TDLBFD002002 LOFD001022 TDLOFD001022

UTRAN and UTRAN Inter-RAT ANR PS InterRAT Mobility between EUTRAN and UTRAN Transport Channel Management SRVCC to UTRAN SRVCC to UTRAN

1526728470 L.IRATHO.E2G.NoNRT

Number of inter-RAT initiation failures from EUTRAN to GERAN because the adjacent cell is not on the NRT of the source cell

Multimode: None GSM: None UMTS: None LTE: LOFD001020 LOFD002002 TDLOFD001020 TDLBFD002002 LOFD001023 TDLOFD001023

PS InterRAT Mobility between EUTRAN and GERAN Inter-RAT ANR PS InterRAT Mobility between EUTRAN and GERAN Transport Channel Management SRVCC to GERAN SRVCC to GERAN

1526730042 L.IRATHO.E2W.NoNRT.PLMN

Number of inter-RAT handover initiation failures

Multimode: None GSM: None

PS InterRAT Mobility between EUTRAN and UTRAN

Counter ID

Counter Name

1526730043 L.IRATHO.E2G.NoNRT.PLMN

Counter Feature ID Feature Name Description

from EUTRAN to WCDMA network because the adjacent cell is not on the NRT of the source cell for a specific operator

UMTS: None LTE: LOFD001019 LOFD002002 TDLOFD001019 TDLBFD002002 LOFD001036 LOFD001037 TDLOFD001036 TDLOFD001037 LOFD070206 LOFD001022 TDLOFD001022

Inter-RAT ANR PS InterRAT Mobility between EUTRAN and UTRAN Transport Channel Management RAN Sharing with Common Carrier RAN Sharing with Dedicated Carrier RAN Sharing with Common Carrier RAN Sharing with Dedicated Carrier Hybrid RAN Sharing SRVCC to UTRAN SRVCC to UTRAN

Number of inter-RAT handover initiation failures from EUTRAN to GERAN because the adjacent cell is not

Multimode: None GSM: None UMTS: None LTE: LOFD001020

PS InterRAT Mobility between EUTRAN and GERAN Inter-RAT ANR PS InterRAT Mobility between EUTRAN and GERAN

Counter ID

Counter Name

Counter Feature ID Feature Name Description

on the NRT of the source cell for a specific operator

LOFD002002 TDLOFD001020 TDLBFD002002 LOFD001036 LOFD001037 TDLOFD001036 TDLOFD001037 LOFD070206 LOFD001023 TDLOFD001023

Transport Channel Management RAN Sharing with Common Carrier RAN Sharing with Dedicated Carrier RAN Sharing with Common Carrier RAN Sharing with Dedicated Carrier Hybrid RAN Sharing SRVCC to GERAN SRVCC to GERAN

1526741657 L.IntraRat.CgiReadAtt

Number of attempts to read CGIs for intraRAT neighboring cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001 TDLOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

1526741658 L.IntraRat.CgiReadSucc

Number of successful attempts to read CGIs for intraRAT

Multimode: None GSM: None

Automatic Neighbour Relation (ANR) Automatic Neighbour

Counter ID

Counter Name

Counter Feature ID Feature Name Description

neighboring UMTS: Relation cells of a None (ANR) cell LTE: LOFD002001 TDLOFD002001 1526741659 L.E2W.CgiReadAtt

Number of attempts to read CGIs for neighboring WCDMA cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001 TDLOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

1526741660 L.E2G.CgiReadAtt

Number of attempts to read CGIs for neighboring GERAN cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001 TDLOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

1526741661 L.E2T.CgiReadAtt

Number of attempts to read CGIs for neighboring TDSCDMA cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

Counter ID

Counter Name

Counter Feature ID Feature Name Description

TDLOFD002001 1526741662 L.E2W.CgiReadSucc

Number of successful attempts to read CGIs for neighboring WCDMA cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001 TDLOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

1526741663 L.E2G.CgiReadSucc

Number of successful attempts to read CGIs for neighboring GERAN cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001 TDLOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

1526741664 L.E2T.CgiReadSucc

Number of successful attempts to Read CGIs for neighboring TDSCDMA cells of a cell

Multimode: None GSM: None UMTS: None LTE: LOFD002001 TDLOFD002001

Automatic Neighbour Relation (ANR) Automatic Neighbour Relation (ANR)

15

Glossary

For the acronyms, abbreviations, terms, and definitions, see Glossary.

16

Reference Documents

1. 3GPP TS 32.511: "Automatic Neighbor Relation (ANR) management; Concepts and requirements" 2. 3GPP TS 36.300: "E-UTRAN Overall description" 3. 3GPP TS 36.331: "RRC Protocol specification" 4. 3GPP TS 36.413: "E-UTRAN S1 Application Protocol (S1AP)" 5. DRX and Signaling Control Feature Parameter Description 6. Inter-RAT Mobility Management in Connected Mode Feature Parameter Description 7. Intra-RAT Mobility Management in Connected Mode Feature Parameter Description 8. RAN Sharing Feature Parameter Description 9. S1 and X2 Self-Management Feature Parameter Description