BSC6900 Configuration guide

BSC6900 GSMV900R011C00

Initial Configuration Guide

Issue 07

Date 2010-09-15

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2010. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent 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. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase 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 representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

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http://www.huawei.com

mailto:[email protected]

About This Document

PurposeThis document describes the initial configuration of BSC6900.

Product VersionThe following table lists the product version related to this document.

Product Name Product Version

BSC6900 V900R011C00

Intended AudienceThis document is intended for:

l Field engineersl Network operatorsl System engineers

Organization1 Changes in BSC6900 GSM Initial Configuration Guide

This chapter describes the changes in the BSC6900 GSM Initial Configuration Guide.

2 Introduction to Initial Configuration

Initial configuration refers to the process of creating the script for the equipment to start tooperate.

3 Data Preparation for Initial Configuration

In the BSC6900 initial configuration, some data is obtained from the data sheets after negotiationwith other network elements. The negotiated data includes the global data, equipment data,interface data, base station data, and cell data.

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4 Initial Configuration Procedures

This chapter describes the process of creating the script of BSC6900 initial configuration.

5 Typical Configuration Script

The typical configuration scripts used in this document derive from the documents related to theBSC6900. The typical configuration scripts concern global data, equipment data, networkinterfaces, base stations, and cells.

6 Configuring the Global Information

BSC6900This chapter describes how to configure the global information. The global dataconfiguration provides a basis for all the other configurations, and is thus determined duringnetwork planning. After the BSC6900 global data configuration takes effect, do not modify itunless the network is planned again.

7 Configuring the Equipment Data

This chapter provides the example script for configuring the equipment data for the BSC6900,including the system information and the data about the cabinet, subrack, and board.

8 Configuring the Interfaces

This chapter describes how to configure the GSM interfaces, including the Ater, A, Gb, and Pbinterfaces.

9 Configuring the BTS

This chapter describes how to configure a GSM BTS and its cells for the BSC6900. Theconfiguration enables the radio receive/transmit functionality of the BTS and meets therequirements of the radio coverage in the cells. The configuration also enables the BSC6900 toperform centralized control and management on the BTS and allocate radio resources for theBTS.

10 Configuration Reference Information

This chapter describes the concepts, principles, rules, and conventions related to dataconfiguration.

ConventionsSymbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates a hazard with a high level of risk, which if notavoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if notavoided,could result in equipment damage, data loss,performance degradation, or unexpected results.

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Symbol Description

Indicates a tip that may help you solve a problem or savetime.

Provides additional information to emphasize or supplementimportant points of the main text.

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are inCourier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ x | y | ... } Optional items are grouped in braces and separated byvertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.

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Boldface Buttons, menus, parameters, tabs, window, and dialog titlesare in boldface. For example, click OK.

> Multi-level menus are in boldface and separated by the ">"signs. For example, choose File > Create > Folder.

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A meansthe two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.

Action Description

Click Select and release the primary mouse button without movingthe pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

Drag Press and hold the primary mouse button and move thepointer to a certain position.

About This DocumentBSC6900 GSM


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Contents

About This Document...................................................................................................................iii

1 Changes in BSC6900 GSM Initial Configuration Guide....................................................1-1

2 Introduction to Initial Configuration.....................................................................................2-1

3 Data Preparation for Initial Configuration...........................................................................3-1

4 Initial Configuration Procedures............................................................................................4-1

5 Typical Configuration Script...................................................................................................5-1

6 Configuring the Global Information.....................................................................................6-16.1 Configuring the Basic Information.................................................................................................................6-26.2 Configuring the OPC and DPC.......................................................................................................................6-26.3 Configuring the M3UA Local and Destination Entities..................................................................................6-3

7 Configuring the Equipment Data...........................................................................................7-17.1 Configuring the System Information...............................................................................................................7-27.2 Configuring a Cabinet.....................................................................................................................................7-27.3 Configuring a Subrack....................................................................................................................................7-27.4 Configuring a Board........................................................................................................................................7-37.5 Configuring an EMU.......................................................................................................................................7-47.6 Configuring the Clocks...................................................................................................................................7-47.7 Configuring the Time......................................................................................................................................7-5

8 Configuring the Interfaces.......................................................................................................8-18.1 Configuring the Ater Interface........................................................................................................................8-28.2 Configuring the A Interface (over TDM)........................................................................................................8-38.3 Configuring the A Interface (over IP).............................................................................................................8-3

8.3.1 Configuring the Physical Layer and Data Link Layer of the A Interface (over IP)...............................8-48.3.2 Configuring the Control Plane of the A Interface (over IP)...................................................................8-78.3.3 Configuring the Mapping Between Service Types and Transmission Resources..................................8-88.3.4 Configuring the User Plane of the A Interface (over IP).......................................................................8-8

8.4 Configuring the Gb Interface (over FR)..........................................................................................................8-98.5 Configuring the Gb Interface (over IP)...........................................................................................................8-98.6 Configuring the Pb Interface.........................................................................................................................8-10

9 Configuring the BTS..................................................................................................................9-1

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9.1 Configuring Equipment Data..........................................................................................................................9-29.2 Configuring the Logical Data..........................................................................................................................9-49.3 Configuring the Transmission Data................................................................................................................9-5

9.3.1 TDM/HDLC...........................................................................................................................................9-59.3.2 IP over FE/GE........................................................................................................................................9-59.3.3 IP over E1...............................................................................................................................................9-7

9.4 Configuring the BTS Clock.............................................................................................................................9-89.5 Activating the BTS Configuration..................................................................................................................9-89.6 Optional Functions of BTS.............................................................................................................................9-9

9.6.1 Configuring the Neighboring Cell Relations.........................................................................................9-99.6.2 Configuring the BTS Timeslots.............................................................................................................9-9

10 Configuration Reference Information...............................................................................10-110.1 Data Configuration Principles for Equipment.............................................................................................10-2

10.1.1 Configuration Rules of the Cabinets..................................................................................................10-210.1.2 Configuration Rules of the Subracks.................................................................................................10-210.1.3 Configuration Rules of the Boards.....................................................................................................10-310.1.4 Configuration Rules of the Clock.......................................................................................................10-510.1.5 Introduction to Time Synchronization...............................................................................................10-6

10.2 Data Configuration Principles for Interfaces...............................................................................................10-610.2.1 Links on the A and Ater Interfaces....................................................................................................10-610.2.2 Timeslot Assignment on the Ater Interface.......................................................................................10-810.2.3 Configuration Rules of the Gb Interface Links..................................................................................10-9

10.3 Data Configuration Principles for Base Stations.......................................................................................10-1210.3.1 Numbering Rules of BTS Components............................................................................................10-1310.3.2 Configuration Rules of the BTS Boards..........................................................................................10-1710.3.3 Configuration Rules of the TRX Send and Receive Modes.............................................................10-2210.3.4 Configuration Rules of the BTS Clock Sources...............................................................................10-2610.3.5 BTS Network Topologies.................................................................................................................10-2810.3.6 TDM-Based Networking on the Abis Interface...............................................................................10-3110.3.7 IP-Based Networking on the Abis Interface.....................................................................................10-3210.3.8 Typical Configuration Scenarios of the Radio Layer ......................................................................10-3410.3.9 Concepts of the BTS Multiplexing Mode........................................................................................10-3410.3.10 Instances of BTS Multiplexing Modes...........................................................................................10-3610.3.11 Principles of DFCU/DFCB Configuration.....................................................................................10-4010.3.12 Configuration Rules of Upgrading Cabinets from Version 8.x to Version 9.0..............................10-4110.3.13 Configuration Guidelines for Typical TRX Power........................................................................10-47

10.4 Data Configuration Guidelines for Specifications....................................................................................10-4710.5 Data Configuration Principles for Numbering..........................................................................................10-49

10.5.1 BSC6900 Subrack Number..............................................................................................................10-5010.5.2 Transmission Resource Mapping Record Index..............................................................................10-5010.5.3 Activity Factor Table Index.............................................................................................................10-5010.5.4 SCTP Link Number..........................................................................................................................10-51

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10.5.5 Adjacent Node ID.............................................................................................................................10-5110.5.6 MTP3/M3UA DSP Index.................................................................................................................10-5110.5.7 Signaling Link Set Index..................................................................................................................10-5110.5.8 MSC ID............................................................................................................................................10-5210.5.9 Logical Cell ID.................................................................................................................................10-5210.5.10 GSM Cell ID..................................................................................................................................10-5310.5.11 NRI.................................................................................................................................................10-5310.5.12 PLMN ID........................................................................................................................................10-5310.5.13 LA Identifiers.................................................................................................................................10-5410.5.14 RA Identifiers.................................................................................................................................10-5410.5.15 PLMN Value Tag...........................................................................................................................10-55

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Figures

Figure 10-1 Links on the A and Ater interfaces (TCS configured locally) .......................................................10-7Figure 10-2 Links on the A and Ater interfaces (TCS configured remotely) ...................................................10-8Figure 10-3 Logical connections at the NS and BSSGP layers.......................................................................10-12Figure 10-4 Star topology.................................................................................................................................10-28Figure 10-5 Chain topology.............................................................................................................................10-29Figure 10-6 Bypass function of the BTS..........................................................................................................10-30Figure 10-7 Tree topology................................................................................................................................10-30Figure 10-8 Ring topology...............................................................................................................................10-31Figure 10-9 TDM-based networking on the Abis interface.............................................................................10-32Figure 10-10 IP over E1 Networking...............................................................................................................10-32Figure 10-11 IP over Ethernet networking (layer 2)........................................................................................10-33Figure 10-12 IP over Ethernet networking (layer 3)........................................................................................10-33Figure 10-13 Components of the PLMN ID....................................................................................................10-53Figure 10-14 Components of the LAI..............................................................................................................10-54Figure 10-15 Components of the RAI..............................................................................................................10-54Figure 10-16 Example of planning the value ranges of PLMN value tags......................................................10-55

BSC6900 GSMInitial Configuration Guide Figures


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Tables

Table 10-1 Board classification..........................................................................................................................10-3Table 10-2 Functions of boards..........................................................................................................................10-4Table 10-3 Links on the A and Ater interfaces..................................................................................................10-7Table 10-4 Bandwidth of OM timeslots and signaling timeslots on the Ater interface.....................................10-8Table 10-5 Description of the configuration parameters..................................................................................10-10Table 10-6 Numbering rules of cabinets..........................................................................................................10-14Table 10-7 Cabinet selection............................................................................................................................10-14Table 10-8 Numbering rules of subracks.........................................................................................................10-15Table 10-9 Numbering rules of slots................................................................................................................10-16Table 10-10 Numbering rules of the non-SingleRAN BTS components.........................................................10-17Table 10-11 Configuration rules of the BTS3900 boards................................................................................10-17Table 10-12 Configuration rules of the DBS3900 boards................................................................................10-18Table 10-13 Configuration rules of the BTS3900A boards.............................................................................10-19Table 10-14 Configuration rules of the BTS3900B boards..............................................................................10-19Table 10-15 Configuration rules of the BTS3900E boards..............................................................................10-20Table 10-16 Configuration rules of the BTS3012 boards................................................................................10-20Table 10-17 Configuration rules of the DBS3900 boards................................................................................10-20Table 10-18 Configuration rules of the BTS3900 boards................................................................................10-21Table 10-19 Configuration rules of the BTS3900A boards.............................................................................10-22Table 10-20 Configuration rules of the TRX send and receive modes............................................................10-23Table 10-21 Configuration rules of the BTS clock sources.............................................................................10-27Table 10-22 Timeslot assignment in 1:1 multiplexing mode...........................................................................10-36Table 10-23 Timeslot assignment in 2:1 multiplexing mode...........................................................................10-37Table 10-24 Timeslot assignment in 3:1 multiplexing mode...........................................................................10-38Table 10-25 Timeslot assignment in 4:1 multiplexing mode...........................................................................10-39Table 10-26 Instances of the physical 16 kbit/s multiplexing mode................................................................10-39Table 10-27 Configuration rules of upgrading the BBU subrack....................................................................10-41Table 10-28 Configuration rules of upgrading the RFU (not supporting the filler panel)...............................10-42Table 10-29 Configuration rules of upgrading the RFU (supporting the filler panel).....................................10-42Table 10-30 Configuration rules of upgrading the RRU..................................................................................10-43Table 10-31 IP addresses of the monitoring boards.........................................................................................10-44Table 10-32 Configuration rules for upgrading the monitoring boards...........................................................10-45Table 10-33 BSC6900 specifications...............................................................................................................10-47

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1 Changes in BSC6900 GSM InitialConfiguration Guide

This chapter describes the changes in the BSC6900 GSM Initial Configuration Guide.

07 (2010-09-15)This is the seventh commercial release.

Compared with issue 06 (2010-05-31) of V900R011C00, this issue includes the following newtopics:l 10.5 Data Configuration Principles for Numbering

Compared with issue 06 (2010-05-31) of V900R011C00, this issue does not incorporate anychanges.

Compared with issue 06 (2010-05-31) of V900R011C00, this issue does not exclude any topics.

06 (2010-05-31)This is the sixth commercial release.

Compared with issue 05 (2010-03-25) of V900R011C00, this issue includes the following newtopics:l 10.4 Data Configuration Guidelines for Specifications



05 (2010-03-25)This is the fifth commercial release.

Compared with issue 04 (2010-01-30) of V900R011C00, this issue does not include any newtopics.

Compared with issue 04 (2010-01-30) of V900R011C00, this issue incorporates the followingchanges.

BSC6900 GSMInitial Configuration Guide 1 Changes in BSC6900 GSM Initial Configuration Guide


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Item Change Description

Configuring the Physical Layer and DataLink Layer for the FG2a/FG2c/GOUa/GOUcBoard

The description of the link aggregation groupis added.


04 (2010-01-30)This is the fourth commercial release.

Compared with issue 03 (2009-12-05) of V900R011C00, this issue includes the following newtopics:l 9.6.2 Configuring the BTS Timeslotsl 10.3.12 Configuration Rules of Upgrading Cabinets from Version 8.x to Version 9.0



Configuring the Physical Layer and DataLink Layer for the FG2a/FG2c/GOUa/GOUcBoard

The procedure for configuring an IP route ismodified.


03 (2009-12-05)This is the third commercial release.

Compared with issue 02 (2009-10-30) of V900R011C00, this issue includes the following newtopics:l 10.1 Data Configuration Principles for Equipmentl 10.2 Data Configuration Principles for Interfacesl 10.3 Data Configuration Principles for Base Stations



02 (2009-10-30)This is the second commercial release.

Compared with issue 01 (2009-07-30) of V900R011C00, this issue includes the following newtopics:

1 Changes in BSC6900 GSM Initial Configuration GuideBSC6900 GSM


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l Typical Configuration Scripts

l 9.4 Configuring the BTS Clock

l 9.6.1 Configuring the Neighboring Cell Relations

l 10.3.1 Numbering Rules of BTS Components

l 10.3.2 Configuration Rules of the BTS Boards

l 10.3.3 Configuration Rules of the TRX Send and Receive Modes

l 10.3.4 Configuration Rules of the BTS Clock Sources



Data Preparation for Initial Configuration GSM data preparation for the initialconfiguration is updated.

Configuring a Subrack The procedure for enabling the monitoringfunction of the power distribution box afterthe subrack is configured is added.

9.1 Configuring Equipment Data The procedure for configuring the TDM overPacket switching relations of the MRRU/MRFU board is added.

9.1 Configuring Equipment Data The procedure for configuring BTS powersharing is added.

9.2 Configuring the Logical Data The procedure for configuring a GSM cell byrunning the atom commands is added.

9.3.2 IP over FE/GE The procedure for configuring the BTS AbisMux function is added.

9.3.2 IP over FE/GE The procedure for configuring the BFDdetection function is added.

9.3.2 IP over FE/GE The procedure for activating the IPPMdetection function is added.

9.3.2 IP over FE/GE The procedure for configuring the serviceVLAN mapping on the Abis interface isadded.

Compared with issue 01 (2009-07-30) of V900R011C00, this issue excludes the followingtopics:

l Configuring a Connection Path Between Subracks

01 (2009-07-30)

This is the first commercial release.

BSC6900 GSMInitial Configuration Guide 1 Changes in BSC6900 GSM Initial Configuration Guide


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2 Introduction to Initial Configuration

Initial configuration refers to the process of creating the script for the equipment to start tooperate.

l It is recommended that the command script be created on the BSC6900 LMT.l During commissioning, the script is imported to the BSC6900. For data modification after

the BSC6900 starts operating, see the GBSS Reconfiguration Guide.

BSC6900 GSMInitial Configuration Guide 2 Introduction to Initial Configuration


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3 Data Preparation for Initial Configuration

In the BSC6900 initial configuration, some data is obtained from the data sheets after negotiationwith other network elements. The negotiated data includes the global data, equipment data,interface data, base station data, and cell data.

For the data preparation for BSC6900 initial configuration, see GSM Data Preparation for theInitial Configuration.

BSC6900 GSMInitial Configuration Guide 3 Data Preparation for Initial Configuration


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4 Initial Configuration Procedures

This chapter describes the process of creating the script of BSC6900 initial configuration.

Prerequisitel The license has been obtained.l The data negotiated between the BSC6900 and other network elements is ready. For details,

see Data Preparation for Initial Configuration.

ContextFor details of the typical configuration scripts, see Typical Configuration Scripts.

Procedure

Step 1 Open the initial configuration tool. The BSC6900 LMT is recommended.

Step 2 Create an initial configuration script.1. 6 Configuring the Global Information.2. 7 Configuring the Equipment Data.3. 8 Configuring the Interfaces.4. 9 Configuring the BTS.

Step 3 Save the initial configuration script.

----End

PostrequisiteFor details about loading the BSC6900 initial configuration data, see BSC6900 GSMCommissioning Guide.

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5 Typical Configuration Script

The typical configuration scripts used in this document derive from the documents related to theBSC6900. The typical configuration scripts concern global data, equipment data, networkinterfaces, base stations, and cells.

For details of the BSC6900 typical configuration scripts, see the GSM Typical ConfigurationScripts.

BSC6900 GSMInitial Configuration Guide 5 Typical Configuration Script


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6 Configuring the Global Information

About This Chapter

BSC6900This chapter describes how to configure the global information. The global dataconfiguration provides a basis for all the other configurations, and is thus determined duringnetwork planning. After the BSC6900 global data configuration takes effect, do not modify itunless the network is planned again.

1. 6.1 Configuring the Basic InformationThis section describes how to configure the basic data of the BSC6900. The configurationof the BSC6900 basic data is the prerequisite for the initial configuration.

2. 6.2 Configuring the OPC and DPCThis section describes how to configure the OPC and DPC.

3. 6.3 Configuring the M3UA Local and Destination EntitiesThis section describes how to configure the local and destination M3UA entities. You needto configure the M3UA entities when the IP-based networking is used.

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6.1 Configuring the Basic InformationThis section describes how to configure the basic data of the BSC6900. The configuration ofthe BSC6900 basic data is the prerequisite for the initial configuration.

Prerequisitel All the subracks are switched to the ineffective mode by running the SET

CFGDATAINEFFECTIVE command.l The basic data is not configured.

Procedure

Step 1 Run the SET BSCBASIC command to set the basic GSM data.

Step 2 Run the ADD GCNOPERATOR command to add a primary GSM operator. Set OperatorType to PRIM(Primary Operator).

Step 3 Optional: To add more secondary GSM operators, run the ADD GCNOPERATOR commandrepeatedly. Set Operator Type to SEC(Secondary Operator).

Step 4 Optional: Run the LST GLOBALROUTESWcommand to query the value of the global routemanagement switch. If the global route management function is not required but the global routemanagement switch is set to ON, run the SET GLOBALROUTESW command to set the globalroute management switch to OFF.

----End

6.2 Configuring the OPC and DPCThis section describes how to configure the OPC and DPC.

PrerequisiteThe basic data of the BSC6900 has been configured. For details, see Configuring the Basic Data.

Contextl The network ID and the signaling point code must be planned in the SS7 network.l When you configure a DPC, specify the signaling route mask for load sharing. When you

configure a signaling link set, specify the signaling link mask to determine the policy ofrouting between signaling links within that signaling link set. The result of the signalingroute mask AND the signaling link mask should be 0.

Procedure

Step 1 Run the ADD OPC command to add an OPC.

Step 2 Run the ADD N7DPC command to add a DPC. To add more DPCs, run this commandrepeatedly.

----End

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6.3 Configuring the M3UA Local and Destination EntitiesThis section describes how to configure the local and destination M3UA entities. You need toconfigure the M3UA entities when the IP-based networking is used.

PrerequisiteThe OPC and DPC are configured. For details, see Configuring the OPC and DPC.

Procedure

Step 1 Run the ADD M3LE command to add an M3UA local entity.

Step 2 Run the ADD M3DE command to add an M3UA destination entity.

----End

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7 Configuring the Equipment Data

About This Chapter

This chapter provides the example script for configuring the equipment data for the BSC6900,including the system information and the data about the cabinet, subrack, and board.

ContextFamiliarize yourself with 10.1 Data Configuration Principles for Equipment beforeperforming the operations described in this chapter.

1. 7.1 Configuring the System InformationThis section describes how to configure the system information of the BSC6900.

2. 7.2 Configuring a CabinetThis section describes how to configure a cabinet for the BSC6900. You need to configurethe cabinet based on the requirements specified in the actual network planning.

3. 7.3 Configuring a SubrackThis section describes how to configure a subrack for the BSC6900. You need to configurethe subrack based on the requirements specified in the actual network planning.

4. 7.4 Configuring a BoardThis section describes how to configure a board for the BSC6900. You need to configurethe board based on the requirements specified in the actual network planning.

5. 7.5 Configuring an EMUThis section describes how to configure an EMU. An EMU is required for the BSC6900to collect the Boolean value, analog value, and alarm threshold information.

6. 7.6 Configuring the ClocksThis section describes how to configure the BSC6900 clocks. You need to configure theclock source of the interface board, clock source of the system, and working mode of thesystem clock source.

7. 7.7 Configuring the TimeThis section describes how to configure the time of the BSC6900. You need to set the timezone, daylight saving time, and (Simple Network Time Protocol) SNTP synchronizationserver.

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7.1 Configuring the System InformationThis section describes how to configure the system information of the BSC6900.

PrerequisiteThe basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.

ContextThe system information consists of the system description, system ID, contact information ofthe vendor, system location, and system services.

Procedure

Step 1 Optional: Run the SET SYS command to set the system information.

----End

7.2 Configuring a CabinetThis section describes how to configure a cabinet for the BSC6900. You need to configure thecabinet based on the requirements specified in the actual network planning.


ContextThe Main Processing Rack (MPR) is configured by default. It need not be added through theMML command.

Procedure

Step 1 Run the ADD CAB command to add an Extended Processing Rack (EPR).

Step 2 Optional: In BM/TC separated mode, run the ADD CAB command to add a TransCoder Rack(TCR).

----End

7.3 Configuring a SubrackThis section describes how to configure a subrack for the BSC6900. You need to configure thesubrack based on the requirements specified in the actual network planning.


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Contextl The Main Processing Subrack (MPS) is configured by default. You need not add this

subrack by running the MML command.

Procedure

Step 1 To add an Extended Processing Subrack (EPS) for the BSC6900, run the ADD SUBRACKcommand. To add more EPSs, run this command repeatedly.

Step 2 To add a TransCoder Subrack (TCS) for the BSC6900, run the ADD SUBRACK command. Toadd more TCSs, run this command repeatedly.

Step 3 After a subrack is added, run the SET SCUPORT command to enable the corresponding porton the SCU board in the main subrack.

----End

Postrequisite

To enable the monitoring function of the power distribution box, do as follows:

1. Run the MOD SUBRACK command to enable the monitoring function of the powerdistribution box. The details are as follows:

l Set Subrack No. to the number of the subrack connected to the power distribution box.

l Set Connect power monitoring board to YES.

2. Run the SET PWRPARA command to set the parameters of the power monitoring board.

3. Run the SET PWRALMSW command to set the alarm switch on the power monitoringboard.

7.4 Configuring a BoardThis section describes how to configure a board for the BSC6900. You need to configure theboard based on the requirements specified in the actual network planning.

Contextl For the data to be negotiated and planned for configuring a board for the BSC6900, see

Data Preparation for Initial Configuration.

l For details of the board configuration rule, see Configuration Rules of the Boards.

Procedure

Step 1 Run the ADD BRD command to add a board to the BSC6900. To add more boards, run thiscommand repeatedly.

Step 2 Optional: When the boards work in active/standby mode, run the SET MSP command to setthe attributes of the Multiplex Section Protection (MSP).

----End



7-3

7.5 Configuring an EMUThis section describes how to configure an EMU. An EMU is required for the BSC6900 to collectthe Boolean value, analog value, and alarm threshold information.

PrerequisiteThe subrack for housing the EMU is already configured.

Contextl The EMU gathers Boolean values, analog values, and alarm threshold information and

reports them to the LMT.l One cabinet can be configured with only one EMU.

Procedure

Step 1 Run the ADD EMU command to add an EMU.

----End

7.6 Configuring the ClocksThis section describes how to configure the BSC6900 clocks. You need to configure the clocksource of the interface board, clock source of the system, and working mode of the system clocksource.


ContextYou need to determine the clock source of the interface board, clock source of the system, andworking mode of the system clock source through network planning.

The line clock is the 8 kHz clock transmitted from the interface board to the GCUa board.Therefore, when the system uses the line clock, a clock source needs to be configured for theinterface board.

l In BM/TC combined configuration mode, the A interface board of the MPS needs to beconfigured with a clock source. In addition, the link number for the clock source needs tobe specified, and the backplane 8 kbit/s clock output switch needs to be turned on.

l In BM/TC separated configuration mode, the interface boards in both the TCS and MPSneed to be configured with clock sources.– In the case of the TCS, the A interface board of the TCS needs to be configured with a

clock source. In addition, the link number for the clock source needs to be specified,and the backplane 8 kbit/s clock output switch needs to be turned on. If multiple TCSsare configured, the A interface board of each TCS needs to be configured with the lineclock.




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– In the case of the MPS, the Ater interface board of the MPS needs to be configured witha clock source. In addition, the link number for the clock source needs to be specified,and the backplane 8 kbit/s clock output switch needs to be turned on.

l If the BSC6900 is configured with FR-based Gb interface boards and the SGSN and MSCuse different clock sources, set Use SGSN clock source to Yes. Configure the clock sourcefor the Gb interface boards. Set Port for LINE1 and Back-up port for LINE1 to the portnumber of the bearer channel (BC).

NOTE

In the case of IP transmission, you need not configure clocks for the BSC6900.

Procedure

Step 1 Run the SET CLK command to set the clock source of the interface board.

Step 2 Run the ADD CLKSRC command to add the clock source of the system.

l Clock source priority ranges from 1 to 4. The clock source of priority 0 is configured bydefault. Priority 0 is the lowest priority. The descending ranking of priorities is 1, 2, 3, and4.

l Clock source type should be set according to the mode of obtaining the clock signals.

– If the clock signals are extracted from the CN by the interface board (for example, OIUa/EIUa/PEUa/FG2a/GOUa) in the EPS and then sent to the GCUa board through the lineclock signal cable, Clock source type should be set to BITS1-2MHZ orBITS2-2MHZ.

– If the clock signals are extracted from the CN by the interface board in the MPS and thensent to the GCUa board through the backplane of the MPS, Clock source type should beset to LINE1_8KHZ or LINE2_8KHZ.

– If the clock signals are provided by the external BITS, Clock source type should be setto BITS1-2MBPS, BITS2-2MBPS, BITS1-T1BPS, or BITS2-T1BPS.

– If the clock signals are provided by the external 8 kHz clock, Clock source type shouldbe set to 8KHZ.

Step 3 Optional: Run the SET CLKMODE command to set the working mode of the system clocksource.

NOTE

It is recommended that System clock working mode be set to AUTO(Auto Handover) so that the systemcan switch to the clock source of the highest priority when the current clock source is unavailable.

----End

7.7 Configuring the TimeThis section describes how to configure the time of the BSC6900. You need to set the time zone,daylight saving time, and (Simple Network Time Protocol) SNTP synchronization server.




7-5

Procedure

Step 1 Run the SET TZ command to set the time zone and daylight saving time of the BSC6900.

Step 2 Run the ADD SNTPSRVINFO command to add the information about the SNTPsynchronization server.

Step 3 Run the SET SNTPCLTPARA command to set the synchronization period of the SNTP client.

----End




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8 Configuring the Interfaces

About This Chapter

This chapter describes how to configure the GSM interfaces, including the Ater, A, Gb, and Pbinterfaces.

8.1 Configuring the Ater InterfaceThis section describes how to configure the TDM-based Ater interface to implement thecommunication between the MPS/EPS and the TCS when the BSC6900 is in BM/TC separatedmode.

8.2 Configuring the A Interface (over TDM)This section describes how to configure the TDM-based A interface in BM/TC separated modeor BM/TC combined mode.

8.3 Configuring the A Interface (over IP)This section describes how to configure the IP-based A interface.

8.4 Configuring the Gb Interface (over FR)This section describes how to configure the FR-based Gb interface for the communicationbetween the SGSN and the BSC6900 configured with the built-in PCU. You need to configurethe Network Service Entity (NSE), Bearer Channel (BC), Network Service Virtual Connection(NSVC), and Point to Point BSSGP Virtual Connection (PTPBVC).

8.5 Configuring the Gb Interface (over IP)This section describes how to configure the IP-based Gb interface for communication betweenthe SGSN and the BSC6900 configured with the built-in PCU. You need to configure the NSE,local NSVL, remote NSVL, and PTPBVC.

8.6 Configuring the Pb InterfaceThis section describes how to configure the Pb interface for the communication between thePCU and the BSC6900 configured with the external PCU. You need to configure the E1 linkand signaling link.

BSC6900 GSMInitial Configuration Guide 8 Configuring the Interfaces


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8.1 Configuring the Ater InterfaceThis section describes how to configure the TDM-based Ater interface to implement thecommunication between the MPS/EPS and the TCS when the BSC6900 is in BM/TC separatedmode.

Prerequisitel The subrack to be configured with an Ater connection path is configured.l The EIUa/OIUa board is configured in the subrack to be configured with an Ater connection

path.

Contextl If the TCS is configured locally, the Ater connection path must be configured. If the TCS

is configured remotely, the Ater connection path, Ater OML, and Ater signaling link mustbe configured.

l If the TCS is configured remotely, the Ater connection path needs to be established onlybetween the MPS/EPS and the main TCS.

l The Ater connection path is established between EIUa boards or between OIUa boards.You can specify different ports to configure more than one Ater connection path betweeninterface boards.

Procedurel If the TCS is configured locally:

1. Configure an Ater connection path.

(1) Run the ADD ATERCONPATH command to add an Ater connection pathbetween the MPS and the TCS.

(2) In TC pool mode, run the ADD ATERE1T1 command to add an Ater connectionpath between the BSC6900 and the TC.

l If the TCS is configured remotely:1. Configure an Ater connection path.

(1) Run the ADD ATERCONPATH command to add an Ater connection pathbetween the MPS and the main TCS.

(2) In TC pool mode, run the ADD ATERE1T1 command to add an Ater connectionpath between the BSC6900 and the TC.

2. Run the ADD ATEROML command to add an Ater OML between the MPS and themain TCS.

NOTE

l At least four consecutive timeslots except timeslot 1 must be used for Ater OMLs.

l It is recommended that a pair of active and standby Ater OMLs be configured.

l If the BIOS version of the EIUa/OIUa board is earlier than 215, the active Ater OML must beconfigured on the Ater connection path that is carried on port 0.

l In TC pool mode, the secondary BSC6900s do not need to be configured with Ater OMLs.

3. Run the ADD ATERSL command to add an Ater signaling link between the MPS/EPS and the TCS.

8 Configuring the InterfacesBSC6900 GSM



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NOTE

l Timeslot 1 of the local main TCS and remote main TCS is reserved and cannot be configured.Timeslot 1 of other TCSs can be configured.

l A maximum of 64 timeslots on each Ater interface board can be used for Ater signaling links.

----End

8.2 Configuring the A Interface (over TDM)This section describes how to configure the TDM-based A interface in BM/TC separated modeor BM/TC combined mode.

Prerequisitel The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.l The OPC and DPC are configured. For details, see Configuring the OPC and DPC.l The EIUa/OIUa/XPUa board is configured. For details, see Configuring a Board.

Procedure

Step 1 Run the ADD GCNNODE command to add a GSM CN node.

Step 2 Run the ADD AE1T1 command to add an E1/T1 over the A interface.

Step 3 Run the ADD MTP3LKS command to add an MTP3 signaling link set.

Step 4 Run the ADD MTP3LNK command to add an MTP3 signaling link.

Step 5 Run the ADD MTP3RT command to add an MTP3 route.

----End

8.3 Configuring the A Interface (over IP)This section describes how to configure the IP-based A interface.

PrerequisiteA license for implementing IP transmission over the A interface is granted.

1. 8.3.1 Configuring the Physical Layer and Data Link Layer of the A Interface (over IP)This section describes how to configure the physical layer and data link layer of the Ainterface on the BSC6900 in IP transmission mode. Before the configuration, specify thetype of interface board according to network planning.

2. 8.3.2 Configuring the Control Plane of the A Interface (over IP)This section describes how to configure the control plane of the IP-based A interface onthe BSC6900 side. You need to configure the SCTP link, M3UA link set, M3UA route,M3UA link, and adjacent node.

3. 8.3.3 Configuring the Mapping Between Service Types and Transmission ResourcesThis section describes how to configure the mapping between the service types andtransmission resources for the adjacent node. You can configure the TRM mapping tableand activity factor table for users of different priorities.



8-3

4. 8.3.4 Configuring the User Plane of the A Interface (over IP)This section describes how to configure the user plane of the A interface on theBSC6900 in IP transmission mode. You need to configure the IP path and IP route.

8.3.1 Configuring the Physical Layer and Data Link Layer of the AInterface (over IP)

This section describes how to configure the physical layer and data link layer of the A interfaceon the BSC6900 in IP transmission mode. Before the configuration, specify the type of interfaceboard according to network planning.

Configuring the Physical Layer and Data Link Layer for the FG2a/GOUa/FG2c/GOUc Board

This section describes how to configure the physical layer and data link layer for the FG2a/FG2c/GOUa/GOUc board, which is used as the interface board of the BSC6900. You need to set theEthernet port attributes, add the standby Ethernet port, add the IP address of the Ethernet port,add the link aggregation group, add the link to the link aggregation group, add the IP address ofthe link aggregation group, and add the device IP address.

PrerequisiteThe basic data of the BSC6900 has been configured. For details, see Configuring the Basic Data.

Procedure

Step 1 Set the Ethernet port attributes.

1. Run the LST ETHPORT command to list the attributes of the Ethernet port.

2. Optional: If the planned data is inconsistent with the default data, run the SETETHPORT command to set the attributes of the Ethernet port.

Step 2 Optional: Run the ADD ETHREDPORT command to configure Ethernet port backup.

Step 3 Run the ADD DEVIP command to add the device IP address of the interface board. Set DeviceIP Address Type to LOGIC_IP.

Step 4 Check whether the link aggregation function is required and then perform the correspondingstep.

If you select... Then...

Link non-aggregation mode Go to Step 5.

Link aggregation mode Go to Step 6.

Step 5 In link non-aggregation mode, run the ADD ETHIP command to add the IP address of theEthernet port. When multiple VLAN gateways are planned, repeat this step until all the IPaddresses are added.

Step 6 In link aggregation mode, do as follows:

1. Run the ADD ETHTRK command to add a link aggregation group.




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NOTE

You can run the DSP ETHTRK command to query the status of a link aggregation group.

2. Run the ADD ETHTRKLNK command to add a link to the link aggregation group. Toadd more links to the link aggregation group, repeat this step until all desired links areadded.

NOTE

l You can run the DSP ETHTRKLNK command to query the status of a link in a link aggregationgroup and the related statistics.

l The links in a link aggregation group can be carried by non-adjacent ports.

l The port to which a link aggregation group is bound and a port on another board cannot work inactive/standby mode or load sharing mode.

l If a link in a link aggregation group becomes faulty, the system automatically removes this link.When this link becomes normal, the port carries this link automatically negotiates with the peerend. If the negotiation is successful, the link is automatically added to the link aggregation group.

3. Run the ADD ETHTRKIP command to add the IP address of the link aggregation group.When multiple VLAN gateways are planned, repeat this step until all the IP addresses areadded.

Step 7 Optional: In the case of layer 3 networking, if the BSC6900 and the NodeB are located ondifferent network segments, run the ADD IPRT command to add an IP route.

----End

Configuring the Physical Layer and Data Link Layer for the PEUa Board

This section describes how to configure the physical layer and data link layer for the PEUa board,which is used as the interface board of the BSC6900. You need to set the E1/T1 attributes anddevice IP address, and configure the PPP link, MP link group, and MP link.


ContextMP link group is also referred to as PPP link group. At least either a PPP link or an MP linkgroup must be configured.

Procedure

Step 1 Set the E1/T1 link attributes.

1. Run the LST E1T1 command to list the attributes of an E1/T1 link.

2. Optional: If the planned data is inconsistent with the default data, run the SET E1T1command to set the attributes of the E1/T1 link.

Step 2 Run the ADD DEVIP command to add the device IP address of the interface board. Set DeviceIP Address Type to LOGIC_IP.

Step 3 Determine the type of link carried on the E1/T1 link (PPP link or MP link group) and performthe corresponding step.



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If the E1/T1 link carries a/an ... Then...

PPP link Go to Step 4.

MP link group Go to Step 5.

Step 4 Configure a PPP link.Run the ADD PPPLNK command to add a PPP link. To add more PPP links, run this commandrepeatedly. The details are as follows:l Set Board type to PEUa.l Set Logic function type to IP.l It is recommended that Borrow DevIP be set to YES.

Step 5 Add an MP link group.1. Run the ADD MPGRP command to add an MP link group. The details are as follows:

l Set Board type to PEUa.l Set Logic function type to IP.l It is recommended that Borrow DevIP be set to YES.

2. Run the ADD MPLNK command to add an MP link. To add more MP links, run thiscommand repeatedly. Set Board type to PEUa.

----End

Configuring the Physical Layer and Data Link Layer for the POUc BoardThis section describes how to configure the physical layer and data link layer for the POUcboard, which is used as the interface board of the BSC6900. You need to set the E1/T1 attributes,optical port attributes, and channel attributes of a channelized optical port. In addition, configurethe PPP link, MLPPP group, and MLPPP link.


Procedure

Step 1 Run the SET E1T1 command to set the E1/T1 attributes.

Step 2 Run the SET OPT command to set the attributes of the optical port.

Step 3 Run the SET COPTLNK command to set the channel attributes of a channelized optical port.

Step 4 Run the ADD DEVIP command to add the device IP address of the interface board.

Step 5 Determine the type of link carried on the E1/T1 link (PPP link or MLPPP group) and performthe corresponding step.

If the E1/T1 link carries a/an... Then...


MLPPP group Go to Step 7.

Step 6 Configure a PPP link.




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Run the ADD PPPLNK command to add a PPP link. To add more PPP links, run this commandrepeatedly.

Step 7 Configure an MLPPP group.

1. Run the ADD MPGRP command to add an MLPPP group.

2. Run the ADD MPLNK command to add an MLPPP link.

----End

8.3.2 Configuring the Control Plane of the A Interface (over IP)This section describes how to configure the control plane of the IP-based A interface on theBSC6900 side. You need to configure the SCTP link, M3UA link set, M3UA route, M3UA link,and adjacent node.

Prerequisitel The M3UA local and destination entities are configured. For details, see Configuring the

M3UA Local and Destination Entities.

l The physical layer and data link layer of the A interface are configured. For details, see8.3.1 Configuring the Physical Layer and Data Link Layer of the A Interface (overIP).

Procedure

Step 1 Run the ADD SCTPLNK command to add an SCTP link. To add more SCTP links, run thiscommand repeatedly. The details are as follows:

l Set Signalling link model to CLIENT.

l Set Application type to M3UA.

Step 2 Run the ADD M3LKS command to add an M3UA link set. The details are as follows:

l When Local entity type is set to M3UA_IPSP, Work mode of the M3UA link set must beset to M3UA_IPSP.

l When Local entity type is set to M3UA_ASP, Work mode of the M3UA link set must beset to M3UA_IPSP if Destination entity type is set to M3UA_SP, or Work mode of theM3UA link set must be set to M3UA_ASP if the destination entity type is either of the othertwo values.

NOTEYou can set Local entity type through the ADD M3LE command and set Destination entity type through theADD M3DE command.

Step 3 Run the ADD M3RT command to add an M3UA route.

Step 4 Run the ADD M3LNK command to add an M3UA link. To add more M3UA links, run thiscommand repeatedly.

Step 5 Run the ADD ADJNODE command to add an adjacent node. Set Adjacent Node Type to A.

----End



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8.3.3 Configuring the Mapping Between Service Types andTransmission Resources

This section describes how to configure the mapping between the service types and transmissionresources for the adjacent node. You can configure the TRM mapping table and activity factortable for users of different priorities.


Procedure

Step 1 Run the ADD TRMMAP command to add a TRM mapping table. To add more TRM mappingtables, run this command repeatedly.

Step 2 Run the ADD TRMFACTOR command to add an activity factor table.

Step 3 Run the ADD ADJMAP command to configure the TRM mapping table and activity factor tablefor users of different priorities.

----End

8.3.4 Configuring the User Plane of the A Interface (over IP)This section describes how to configure the user plane of the A interface on the BSC6900 in IPtransmission mode. You need to configure the IP path and IP route.

PrerequisiteThe control plane of the IP-based A interface is configured. For details, see Configuring theControl Plane of the A Interface (over IP).

Procedure

Step 1 Run the ADD IPPATH command to add an IP path. To add more IP paths, repeat this step untilall desired IP paths are added.

NOTE

l If the type of IP path is QoS, the IP path can match any path type in the TRMMAP table.

l If the type of IP path is non-QoS, the type should be the one mapped to the service in the TRMMAP table.

l You can run the SET PHBMAP command to set the priority of an IP path type.

l The transmission bandwidth and reception bandwidth can be set according to the actual network planning.

Step 2 Optional: Run the ADD IPRT command to add an IP route when the layer 3 networking modeis used between the BSC6900 and the MSC/MGW. To add more IP routes, repeat this step untilall desired IP routes are added.

Step 3 Optional: Run the LST GLOBALROUTESWcommand to query the value of the global routemanagement switch. If the global route management function is not required but the global routemanagement switch is set to ON, run the SET GLOBALROUTESW command to set the globalroute management switch to OFF.




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Step 4 Run the SET TCTYPE command to set the TC DSP resource type. In this step, set The typeof TC resource to ITC.

----End

8.4 Configuring the Gb Interface (over FR)This section describes how to configure the FR-based Gb interface for the communicationbetween the SGSN and the BSC6900 configured with the built-in PCU. You need to configurethe Network Service Entity (NSE), Bearer Channel (BC), Network Service Virtual Connection(NSVC), and Point to Point BSSGP Virtual Connection (PTPBVC).

Prerequisitel The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.l The DPUd/XPUa/PEUa board is configured. For details, see Configuring a Board.

Contextl At the Network Service (NS) layer, NSE is represented by a set of NSVCs and is identified

by the NSEI.l In Gb over FR mode, a BC is a physical bearer channel, which is composed of a certain

number of timeslots of the E1/T1.l An NSVC is carried by a BC and belongs to only one BC and only one NSE, whereas a

BC or NSE can be configured with multiple NSVCs.l An NSVC maps to a PVC. When configuring an NSVC, specify its mapping PVC.l BSSGP is short for Base Station Subsystem GPRS Protocol.l A GPRS cell refers to a cell that is GPRS enabled.

Procedure

Step 1 Run the SET BSCPCUTYPE command to set the PCU type. Set PCU Type to INNER.

Step 2 Run the ADD SGSNNODE command to add an SGSN node.

Step 3 Run the ADD NSE command to add an NSE.

Step 4 Run the ADD BC command to add a BC.

Step 5 Run the ADD NSVC command to add an NSVC.

Step 6 If the BSC6900 cell is configured and activated and the cell supports GPRS, run the ADDPTPBVC command to add a PTPBVC and bind the GPRS cell to its NSE.

----End

8.5 Configuring the Gb Interface (over IP)This section describes how to configure the IP-based Gb interface for communication betweenthe SGSN and the BSC6900 configured with the built-in PCU. You need to configure the NSE,local NSVL, remote NSVL, and PTPBVC.



8-9

Prerequisitel The basic data of the BSC6900 has been configured. For details, see Configuring the Basic

Data.l The DPUd/FG2a/XPUa board is configured. For details, see Configuring a Board.l A license for implementing IP transmission over the Gb interface is granted.l The interface board is configured with the device IP address or port IP address.

Contextl At the Network Service (NS) layer, NSE is represented by a set of NSVCs and is identified

by the NSEI.l BSSGP is short for Base Station Subsystem GPRS Protocol.l A GPRS cell indicates a cell that is GPRS capable.

Procedure

Step 1 Configure the physical layer and data link layer for the FG2a/FG2c/GOUa/GOUc board.

Step 2 Run the SET BSCPCUTYPE command to set the PCU type as built-in.

Step 3 Run the ADD SGSNNODE command to add an SGSN node.

Step 4 Run the ADD NSE command to add an NSE.

Step 5 Configuring an NSVL1. Run the ADD NSVLLOCAL command to add an NSVL on the BSC6900 side.2. Optional: If the NSE is in static configuration mode, run the ADD NSVLREMOTE

command to add an NSVL on the SGSN side.

Step 6 If the cell is configured and the cell supports GPRS, run the ADD PTPBVC command to adda PTPBVC and bind the GPRS cell and its NSE.

----End

8.6 Configuring the Pb InterfaceThis section describes how to configure the Pb interface for the communication between thePCU and the BSC6900 configured with the external PCU. You need to configure the E1 linkand signaling link.

Prerequisitel The basic data of the BSC6900 is configured. For details, see Configuring the Basic Data.l The EIUa/OIUa board is configured. For details, see Configuring a Board.

Procedure

Step 1 Run the SET BSCPCUTYPE command to set the PCU type as external.

Step 2 Run the ADD PCU command to add a PCU.

Step 3 Run the ADD PBE1T1 command to add an E1/T1 over the Pb interface.




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Step 4 Run the ADD PBSL command to add a signaling link over the Pb interface.

----End



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9 Configuring the BTS

About This Chapter

This chapter describes how to configure a GSM BTS and its cells for the BSC6900. Theconfiguration enables the radio receive/transmit functionality of the BTS and meets therequirements of the radio coverage in the cells. The configuration also enables the BSC6900 toperform centralized control and management on the BTS and allocate radio resources for theBTS.

1. 9.1 Configuring Equipment DataThis section describes how to configure data for base station equipment. You need toconfigure data for the base station, cabinet, base station boards, TRX boards, and antennaboards.

2. 9.2 Configuring the Logical DataThis section describes how to configure the logical data for the BTS. You need to configurecell data, binding relation between the cell and the BTS, binding relation between the logicalTRX and the physical TRX board, channel attributes of the TRX, and device attributes ofthe TRX.

3. 9.3 Configuring the Transmission DataThis section describes how to configure the transmission data for the BTS. The transmissionmode can be TDM/HDLC, IP over FE/GE, or IP over E1.

4. 9.4 Configuring the BTS ClockThis section describes how to configure a clock for a BTS. You need to configure the clocksource for the BTS and configure the clock server for the BTS in IP transmission mode.

5. 9.5 Activating the BTS ConfigurationThis section describes how to activate the configuration of a BTS. You need to check thedata integrity of the BTS, activate the BTS configuration, and set the BTS environmentalarms.

6. 9.6 Optional Functions of BTSIn addition to the basic functions, the BTS provides some optional functions. You canconfigure the optional functions as required.

BSC6900 GSMInitial Configuration Guide 9 Configuring the BTS


9-1

9.1 Configuring Equipment DataThis section describes how to configure data for base station equipment. You need to configuredata for the base station, cabinet, base station boards, TRX boards, and antenna boards.

Prerequisitel All types of base stations support TDM/HDLC/IP transmission mode.l The XPUa boards are configured. For details, see Configuring a Board.l There are idle ports on the interface board.

Contextl For the numbering rule of base station equipment, see 10.3.1 Numbering Rules of BTS

Components.l For the configuration rule of base station boards, see 10.3.2 Configuration Rules of the

BTS Boards.l For the configuration rule of the TRX sending and receiving mode, see 10.3.3

Configuration Rules of the TRX Send and Receive Modes.

Procedure

Step 1 Run the ADD BTS command to add a base station.

NOTE

l In the case of the 3900 series base stations, Separate Mode must be set to SUPPORT(Support). Inthe case of the BTS3012, BTS3012II, and BTS3012AE, Separate Mode can be set to SUPPORT(Support) or UNSUPPORT(Not Support). In the case of the 3X series base stations, SeparateMode must be set to UNSUPPORT(Not Support).

l In the case of the SingleRAN base stations, Is Support Normalized Data Configuration must be setto SUPPORT(Support).

l BTS Name should not contain the following forbidden characters:

, (comma), ; (semicolon), " (double quotation marks), ' (single quotation marks), =, %, \, +, &, and#.

Step 2 Run the ADD BTSCABINET command to add a cabinet to the base station.

NOTE

l The boards in the common slots are automatically added according to the default setting. Antennaboards and TRX boards need to be manually added.

l When Is Support SingleRAN Mode is set to SUPPORT(Support SRAN), the SingleRAN basestations can be configured.

Step 3 Run the ADD BTSBRD command to add boards to the base station.l When Board Type is set to PTU(PTU), this parameter can only be used to add IP interface

boards to the double-transceiver BTS.l When the APMU and DTCU boards are configured in a remote monitoring subrack, the

relevant RRUs must be specified. You can do so by running the SET BTSAPMUBPcommand and the SET BTSDHEUBP command respectively.

Step 4 Add TRX boards to the base station.

9 Configuring the BTSBSC6900 GSM



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l 3X series and double-transceiver series base stations

1. Run the ADD BTSTRXBRD command to add TRX boards to a base station of the 3Xseries or double-transceiver series.

NOTE

l In the case of the BTS3012, BTS3012II, and BTS3012AE, the DTRU or QTRU board can beconfigured if Separate Mode is set to SUPPORT(Support).

l The DTRU board enables two logical TRXs to be bound to one physical TRX board. The QTRUboard enables six logical TRXs to be bound to one physical TRX board.

l 3900 series base stations

1. Run the ADD BTSRXUCHAIN command to add an RXU chain or ring.

NOTEThere is no need to add RXU boards or a RXU chain/ring for the 3900B.

2. Run the ADD BTSRXUBRD command to add RXU boards.

NOTE

l For the SingleRAN base stations, Cabinet No., Subrack No., and Subrack No. must beconfigured.

l For the 3900 series base stations, the DRRU/GRRU/MRRU/DRFU/GRFU/MRFU board canbe configured. The DRRU/GRRU/MRRU board can be configured only for the DBS3900GSM and DBS3036. The DRFU/GRFU/MRFU board can be configured only for theBTS3900 GSM/BTS3900A GSM and BTS3036/BTS3036A.

l The DRRU/DRFU board enables two logical TRXs to be bound to one physical TRX board.The MRRU/GRFU/MRFU/GRRU board enables eight logical TRXs to be bound to onephysical TRX board.

l If Is Configure Check threshold is set to NO(NO), run the ADD BTSBRDCAP commandto set the bandwidth manually.

l For base stations to V1 specifications: Forward Bandwidth of the GRRU board cannotexceed 12.5 Mbit/s. Forward Bandwidth of the MRRU board in the 900/850/1900 MHzfrequency band cannot exceed 12.5 Mbit/s. Forward Bandwidth of the MRRU board in the1800 MHz frequency band cannot exceed 15 Mbit/s.

l For base stations to V2 specifications, Forward Bandwidth of the GRRU/MRRU boardcannot exceed 20 Mbit/s.

3. Run the SET BTSRXUBP command to set the sending receiving mode and workingmode of the RXU board.

NOTE

l If a site is configured with a TMA, you need to set the related TMA switch parameters.

l The GRRU/GRFU board supports only the GSM(GSM) working mode. The MRRU/MRFU boardsupports the GSM(GSM), UMTS(UMTS), and GSM_AND_UMTS(GSM AND UMTS)working modes.

4. If the working mode of the MRRU/MRFU is set to GSM_AND_UMTS(GSM ANDUMTS), run the ADD BTSTOPCONFIG command to configure the TDM over Packet(TOP) switching relation of the MRRU/MRFU board. This facilitates common E1/T1transmission between GSM and UMTS.

Step 5 Optional: If power sharing needs to be configured for the base station, run the SETGCELLCHMGAD command to set the advanced channel management parameters of the cell.In this step, set Multi-Density TRX Power Sharing to DYNAMIC(Dynamic powersharing).

Step 6 Optional: Run the ADD BTSANTFEEDERBRD command to add antenna boards to the basestation.



9-3

NOTEThe 3900 series base stations do not need to be configured with antenna boards.

----End

9.2 Configuring the Logical DataThis section describes how to configure the logical data for the BTS. You need to configure celldata, binding relation between the cell and the BTS, binding relation between the logical TRXand the physical TRX board, channel attributes of the TRX, and device attributes of the TRX.

Prerequisitel The data of the operator is configured. For details, see Configuring the Basic Data.

l The OPC data is configured. For details, see Configuring the OPC and DPC.

l The equipment data of the BTS is configured. For details, see 9.1 Configuring EquipmentData.

Procedure

Step 1 Add the cell data by running the compound command or atom commands.

l Adding the cell data quickly by running the compound command

1. Run the ADD GCELLQUICKSETUP command to quickly add data to a GSM cell.

NOTE

l Currently, GSM900 cells or DCS1800 cells support quick configuration. Co-BCCH cells,such as GSM900/DCS1800 co-BCCH cells do not support quick configuration.

l The symbol "&" is used to separate different frequencies. For example, 22&33&44&55.

l Adding the cell data by running the atom commands

1. Run the ADD GCELL command to add a cell.

2. Run the ADD GCELLFREQ command to add frequencies to the cell.

3. Run the ADD GCELLOSPMAP command to add the mapping between the cell andthe originating signaling point.

4. Run the ADD GTRX command to add a TRX.

5. When the GPRS function is enabled, run the MML command SET GCELLGPRS toset the GPRS attributes of the cell.

Step 2 Run the ADD CELLBIND2BTS command to add the binding relation between the cell and theBTS.

Step 3 Run the ADD TRXBIND2PHYBRD command to add the binding relation between the logicalTRX and the physical TRX board.

Step 4 Run the SET GTRXCHAN command to set the channel attributes of the TRX.

Step 5 Run the SET GTRXDEV command to set the device attributes of the TRX.

----End




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9.3 Configuring the Transmission DataThis section describes how to configure the transmission data for the BTS. The transmissionmode can be TDM/HDLC, IP over FE/GE, or IP over E1.

9.3.1 TDM/HDLCThis section describes how to configure the transmission data when the BTS is in TDM/HDLCtransmission mode.

9.3.2 IP over FE/GEThis section describes how to configure the transmission data when the BTS is in IP over FE/GE transmission mode.

9.3.3 IP over E1This section describes how to configure the transmission data when the BTS is in IP over E1transmission mode.

9.3.1 TDM/HDLCThis section describes how to configure the transmission data when the BTS is in TDM/HDLCtransmission mode.

Prerequisitel The equipment data of the BTS is configured. For details, see 9.1 Configuring Equipment

Data.l The logical data of the BTS is configured. For details, see 9.2 Configuring the Logical

Data.

Contextl All types of BTSs support TDM/HDLC transmission.l The TDM/HDLC transmission networking, refer to 10.3.6 TDM-Based Networking on

the Abis Interface.

Procedure

Step 1 Run the ADD BTSCONNECT command to add a connection between the BTS and theBSC6900, between BTSs (including the internal connection of a BTS), or between the BTS andthe DXX. To add multiple BTS connections, run this command repeatedly.

----End

9.3.2 IP over FE/GEThis section describes how to configure the transmission data when the BTS is in IP over FE/GE transmission mode.


Data.



9-5

l The logical data of the BTS is configured. For details, see 9.2 Configuring the LogicalData.

Contextl The double-transceiver series and 3900 series base stations support IP over FE/GE

transmission.l The IP over FE/GE transmission networking, refer to 10.3.7 IP-Based Networking on the

Abis Interface.

Procedure

Step 1 Optional: If the planned data is inconsistent with the default data, run the SET ETHPORTcommand to set the attributes of the Ethernet port.

Step 2 Optional: Run the ADD ETHREDPORT command to configure Ethernet port backup.

Step 3 Optional: Run the ADD DEVIP command to add the device IP address of the Abis IP board.

Step 4 Run the ADD ETHIP command to add the port IP address of the Abis IP board.

Step 5 Optional: When the BSC6900 and the BTS are on different network segments, run the ADDIPRT command to add an IP route to the BSC6900 side.

NOTEIf the global route management function is not required, run the SET GLOBALROUTESW command to setthe global route management switch to OFF.

Step 6 Run the SET BTSIP command to set the IP address of the BTS.

Step 7 Run the SET BTSETHPORT command to set the port attributes of the BTS.

Step 8 Optional: When the BSC6900 and the BTS are on different network segments, run the ADDBTSIPRT command to add an IP route to the BTS side.

Step 9 Run the ADD BTSESN command to add the equipment serial number (ESN) of the BTS.

Step 10 Run the ADD ADJNODE command to add an adjacent node.

Step 11 Run the ADD IPPATH command to add an IP path. To add more IP paths, repeat this step untilall desired IP paths are added.

Step 12 Optional: If the IP transmission efficiency over the Abis interface needs to be improved, youneed to configure the Abis-MUX function. The operation steps are as follows:1. Run the ADD IPMUX command to add an IP MUX pipe. In this step, set IP MUX

Type to ABISMUX.2. Run the ADD BTSABISMUXFLOW command to add the Abis MUX flow to the BTS.

Step 13 Optional: If the QoS of the IP transport network needs to be monitored, configure theBidirectional Forwarding Detection (BFD) and IP Performance Monitor (IPPM) functions. Theoperation steps are as follows:1. Run the ADD BTSBFD command to add a BFD session on the BTS side.2. Run the ACT IPPM command to start the IPPM function on the BSC6900 side.3. Run the ACT BTSIPPM command to start the IPPM function on the BTS side.

Step 14 Optional: If the service VLAN mapping over the Abis interface needs to be configured, performthe following steps:




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1. Run the ADD IPPATH and SET BSCABISPRIMAP command to configure the Abispriority mapping on the BSC6900 side.

2. Run the SET BTSVLAN command to set the VLAN ID and VLAN priority on the BTSside.

----End

9.3.3 IP over E1This section describes how to configure the transmission data when the BTS is in IP over E1transmission mode.


Data.

l The logical data of the BTS is configured. For details, see 9.2 Configuring the LogicalData.

Contextl Only the 3900 series base stations support IP over E1.

l The IP over E1 transmission networking, refer to 10.3.7 IP-Based Networking on theAbis Interface.

Procedure

Step 1 Run the ADD BTSCONNECT command to add a connection between the BTS and theBSC6900, between BTSs (including the internal connection of a BTS), or between the BTS andthe DXX. To add multiple BTS connections, run this command repeatedly.

Step 2 Determine the type of link carried on the E1/T1 link (PPP link or MLPPP group) and performthe corresponding step.

If the E1/T1 link carries a/an ... Then...


MLPPP group Go to Step 4.

Step 3 Configure a PPP link.

1. Run the ADD PPPLNK command to add a PPP link. To add more PPP links, run thiscommand repeatedly.

2. Run the ADD BTSPPPLNK command to add a BTS PPP link. To add more PPP links,run this command repeatedly.

Step 4 Add an MLPPP group.

1. Run the ADD MPGRP command to add an MLPPP group.

2. Run the ADD MPLNK command to add an MLPPP link. To add more MLPPP links, runthis command repeatedly.

3. Run the ADD BTSMPGRP command to add a BTS MLPPP group.



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4. Run the ADD BTSMPLNK command to add a BTS PPP link. To add more PPP links, runthis command repeatedly.

Step 5 Run the ADD ADJNODE command to add an adjacent node.

Step 6 Run the SET BTSIP command to set the IP address of the BTS.

Step 7 Run the ADD BTSESN command to add the ESN of the BTS.

Step 8 Run the ADD IPPATH command to add an IP path. To add more IP paths, run this commandrepeatedly.

----End

9.4 Configuring the BTS ClockThis section describes how to configure a clock for a BTS. You need to configure the clocksource for the BTS and configure the clock server for the BTS in IP transmission mode.

PrerequisiteThe equipment data of the BTS is configured. For details, see 9.1 Configuring EquipmentData.

ContextFor the configuration rule of the BTS clock source, see 10.3.4 Configuration Rules of the BTSClock Sources.

Procedure

Step 1 Optional: If the BTS uses IP over FE/GE transmission, run the SET BTSIPCLKPARAcommand to configure the clock server for the BTS.

Step 2 Optional: If the clock source type for the BTS needs to be set, run the SET BTSCLK commandto configure the BTS clock source.

----End

9.5 Activating the BTS ConfigurationThis section describes how to activate the configuration of a BTS. You need to check the dataintegrity of the BTS, activate the BTS configuration, and set the BTS environment alarms.

PrerequisiteThe BTS and its cells are already configured.

Procedure

Step 1 Run the CHK BTS command to check the data integrity of a BTS.

Step 2 Run the ACT BTS command to activate the configuration of a BTS.




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Step 3 Run the SET BTSENVALMPORT command to set the environment alarms of a BTS.

----End

9.6 Optional Functions of BTSIn addition to the basic functions, the BTS provides some optional functions. You can configurethe optional functions as required.

9.6.1 Configuring the Neighboring Cell RelationsThis section describes how to configure the neighboring cell relations between the cells in aBSC6900 or between the cells in different BSC6900s. To configure the neighboring cellrelations, you need to configure the external 2G cell, external 3G cell, and neighboring cells fora cell to meet the handover requirement.

9.6.2 Configuring the BTS TimeslotsIn the network deployment or adjustment phase, you may need to configure the idle timeslotsor monitoring timeslots of the BTS according to service requirements.

9.6.1 Configuring the Neighboring Cell RelationsThis section describes how to configure the neighboring cell relations between the cells in aBSC6900 or between the cells in different BSC6900s. To configure the neighboring cellrelations, you need to configure the external 2G cell, external 3G cell, and neighboring cells fora cell to meet the handover requirement.

Contextl The cell on which an MS camps before the handover is called the originating cell. The cell

on which the MS will camp after the handover is called the target cell.l The cells in the BSC6900 can be set to bidirectional neighboring cells or uni-directional

neighboring cells.l An external cell, that is, a cell in another BSC6900, can be configured only as a uni-

directional neighboring cell.

Procedure

Step 1 Run the ADD GEXT2GCELL command to add a 2G external cell.

Step 2 Run the ADD GEXT3GCELL command to add a 3G external cell.

Step 3 Run the ADD G2GNCELL command to add a 2G neighboring cell for the specified originatingcell.

Step 4 Run the ADD G3GNCELL command to add a 3G neighboring cell for the specified originatingcell.

----End

9.6.2 Configuring the BTS TimeslotsIn the network deployment or adjustment phase, you may need to configure the idle timeslotsor monitoring timeslots of the BTS according to service requirements.



9-9

PrerequisiteThe data of the BTS is configured.

Contextl During network construction, the existing transmission links of the BTS can be used to

obtain the required monitoring data. This meets the maintenance requirements of operators,monitors various data on the network, and reduces the transmission link costs. With regardto hardware deployment, a monitoring terminal needs to be installed on the BTS side, anda monitoring device needs to be installed on the BSC6900 side. In terms of softwareconfiguration, some of the BTS timeslots need to be used as monitoring timeslots to transmitmonitoring data.

l The idle timeslots of the BTS are used to carry GPRS service data. If the idle timeslots ofthe BTS do not meet the bandwidth requirement of GPRS traffic, additional idle timeslotscan be configured to increase the bandwidth available for GPRS traffic.

l Some of the allocated timeslots of a BTS can be disabled. This operation is applicable toscenarios where leased transmission links are used. For example, an operator leases onlysome timeslots on an E1 for traffic purposes.

Procedurel Configuring the BTS monitoring timeslots

1. Run the ADD BTSMONITORTS command to add a monitoring timeslot at the BTS.

NOTE

l During timeslot assignment, the transparent transmission rules must be met, that is, the sub-timeslots have fixed locations inside a 64 kbit/s timeslot. For example, if sub-timeslot 2 isassigned as the monitoring timeslot of the local BTS, the monitoring timeslot of the upper-levelBTS must also be located in sub-timeslot 2. In addition, the board where the BTS is connectedto the BSC can be configured only in the BM subrack, and this board must be a TDM interfaceboard or an HDLC interface board.

l If a 64 kbit/s monitoring timeslot is configured, the number of its sub-timeslots starts from 0. Ifa 32 kbit/s monitoring timeslot is configured, the number of its sub-timeslots starts from 0 or 4.If a 16 kbit/s monitoring timeslot is configured, the number of its sub-timeslots starts from 0, 2,4, or 6. If an 8 kbit/s timeslot is configured, the number of its sub-timeslots can be that of anysub-timeslot in a 64 kbit/s timeslot.

l If an OIU board of the BSC is to be monitored, the numbers of the incoming timeslots of theBSC start from 2.

l Timeslot 1 of the E1/T1 on the Ater interface of the main TCS is reserved by the system.Therefore, do not configure any monitoring timeslot, semi-permanent link, or SS7 signaling linkon this timeslot.

l If the BTS uses the physical 16 kbit/s multiplexing mode, the bandwidth of the monitoringtimeslot must be 16 kbit/s or 64 kbit/s.

l If a BTS or its upper-level BTS uses the HDLC transmission mode, the monitoring timeslot ofthis BTS must be 64 kbit/s, and the outgoing BTS port of the monitoring timeslot must be anidle port or be the outgoing BTS port of another monitoring timeslot.

l Configuring the BTS idle timeslots1. Run the SET BTSIDLETS command to configure idle timeslots of the BTS.

NOTEIdle timeslots are configured on the basis of BTS cabinet groups. With respect to each cabinet group,no more than 128 idle timeslots can be configured at a time. With respect to each BTS, a maximumof 512 idle timeslots can be configured.




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l Configuring the BTS forbidden timeslots1. Run the SET BTSFORBIDTS command to disable or enable the timeslots of a BTS.

----End



9-11

10 Configuration Reference Information

About This Chapter

This chapter describes the concepts, principles, rules, and conventions related to dataconfiguration.

10.1 Data Configuration Principles for EquipmentThis section describes the configuration rules and reference information related to theBSC6900 equipment.

10.2 Data Configuration Principles for InterfacesThis section describes the configuration rules and reference information related to theBSC6900 interfaces.

10.3 Data Configuration Principles for Base StationsThis section describes the configuration rules and reference information related to a base station.

10.4 Data Configuration Guidelines for SpecificationsThis document provides the specifications of the BSC6900.

10.5 Data Configuration Principles for NumberingThis section describes the numbering rules and reference information related to the BSC6900.

BSC6900 GSMInitial Configuration Guide 10 Configuration Reference Information


10-1

10.1 Data Configuration Principles for EquipmentThis section describes the configuration rules and reference information related to theBSC6900 equipment.

10.1.1 Configuration Rules of the CabinetsThis section describes the configuration rules of the BSC6900 cabinets.

10.1.2 Configuration Rules of the SubracksThis section describes the configuration rules and reference information related to theBSC6900 subracks.

10.1.3 Configuration Rules of the BoardsThis section describes the configuration rules and reference information related to theBSC6900 boards.

10.1.4 Configuration Rules of the ClockThis section describes the configuration rules and reference information related to theBSC6900 clock.

10.1.5 Introduction to Time SynchronizationThe time synchronization function enables the time of the nodes of the GBSS system to besynchronized.

10.1.1 Configuration Rules of the CabinetsThis section describes the configuration rules of the BSC6900 cabinets.

The configuration rules of the BSC6900 cabinets are as follows:

l The cabinets consist of the Main Processing Rack (MPR), Extended Processing Rack(EPR), and TransCoder Rack (TCR).

l The MPR is configured by default. You cannot add or remove this cabinet by running theMML command.

l If a TCS is configured in the local cabinet, the remote TCR cannot be configured.

l According to service requirements, one to three cabinets can be configured. The numberof remote TCRs cannot exceed two.

10.1.2 Configuration Rules of the SubracksThis section describes the configuration rules and reference information related to theBSC6900 subracks.

The configuration rules of the BSC6900 subracks are as follows:

l The Main Processing Subrack (MPS) is configured by default. You need not add thissubrack by running the MML command.

l Before adding a subrack, ensure that the cabinet to which the subrack is added exists, andthat the MPS works properly.

l Each subrack needs to be equipped with a fan box. The power distribution box can beconfigured as required. Generally, only one subrack in a cabinet can be connected to themonitoring board of the power distribution box.

10 Configuration Reference InformationBSC6900 GSM



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l The actual board type in a subrack must be consistent with the configured type. The subracknumber of the EPS/TCS must be consistent with the setting of the DIP switch.

l After a subrack is added, run MML command to enable the corresponding port on the SCUboard in the main subrack.

l The relation between Subrack No. and Cabinet No. is as follows: Cabinet No. equals thequotient of Subrack No. divided by three.

10.1.3 Configuration Rules of the BoardsThis section describes the configuration rules and reference information related to theBSC6900 boards.

Classification of Boards

Table 10-1 provides the classification of the BSC6900 boards.

Table 10-1 Board classification

Board Class Board Type Logical Function Type

Interface board PEUa IP

FR

HDLC

Abis_IP

EIUa/OIUa Abis_TDM

Ater_TDM

A_TDM

Pb_TDM

POUc TDM

IP

FG2a IP

GbIP

GOUa/GOUc/FG2c IP

Data Processing Unit (DPU) DPUa/DPUc/DPUf GTC

DPUb GTC

GPCU

DPUd GPCU

Signaling Processing Unit(XPU)

XPUa/XPUb GCP

RGCP



10-3

Board Class Board Type Logical Function Type

MCP

TDM switching NetworkUnit (TNU)

TNUa TDM_Switching

Operation and MaintenanceUnit (OMU)

OMUa/OMUb OAM

Service Aware Unit (SAU) SAUa SAU

Functions of Boards

When being loaded with different software, the BSC6900 boards provide different functions, asdescribed in Table 10-2.

Table 10-2 Functions of boards

Logical Function Type Description

OAM Operation and maintenance management

TDM_Switching TDM switching

GCP All the subsystems are configured as CPU forService (CPUS) subsystems, which are usedto process the services in the control plane ofthe GSM BSC.

RGCP Subsystem 0 is configured as the MPUsubsystem, which is used to manageresources. All the other subsystems areconfigured as CPUS subsystems, which areused to process the services in the controlplane of the GSM BSC.

MCP Calculation of interference-based channelallocation (IBCA) data

GTC GSM speech service processing

GPCU GSM packet service processing

IP IP interface processing

FR FR interface processing

HDLC HDLC interface processing

TDM TDM interface processing

GbIP GbIP interface processing

Abis_TDM TDM-based Abis interface processing




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Logical Function Type Description

Ater_TDM TDM-based Ater interface processing

Pb_TDM TDM-based Pb interface processing

A_TDM TDM-based A interface processing

Abis_IP IP-based Abis interface processing

SAU Service aware unit

10.1.4 Configuration Rules of the ClockThis section describes the configuration rules and reference information related to theBSC6900 clock.

The configuration rules of the board clock are as follows:

l The interface boards in the EPS cannot provide 8 kHz clock output through the backplane.

l Each channel of 8 kHz backplane clock has only one clock source. The clock output switchon multiple interface boards for the same channel of 8 kHz backplane clock cannot beturned on at the same time.

l If both data and voice services are carried by the board, the clock source for the two typesof services must be the same in the core network. Otherwise, the data or voice service mayfail.

l For the EIUa boards, the LINE1 clock is extracted from Port for LINE1, and the LINE2clock is extracted from Port for LINE2. For other interface boards, both the LINE1 clockand LINE2 clock are extracted from Port for LINE.

l If Use SGSN clock source is set to YES, the POUc board can be used only as a Gb interfaceboard rather than an Abis, Ater, Pb, or A interface board.

The configuration rules of the system clock are as follows:

l Clock source priority ranges from 1 to 4. The clock source of priority 0 is configured bydefault. Priority 0 is the lowest priority. The descending ranking of priorities is 1, 2, 3, and4.

l Clock source type needs to be set according to the mode of obtaining the clock signals.

– If the clock signals are extracted from the CN by the interface board (for example, OIUa/EIUa/PEUa/FG2a/GOUa) in the EPS and then sent to the GCUa board through the lineclock signal cable, Clock source type should be set to BITS1-2MHZ orBITS2-2MHZ.

– If the clock signals are extracted from the CN clock by the interface board in the MPSand then sent to the GCUa board through the backplane of the MPS, Clock sourcetype should be set to LINE1_8KHZ or LINE2_8KHZ.

– If the clock signals are provided by the external BITS clock, Clock source type shouldbe set to BITS1-2MBPS, BITS2-2MBPS, BITS1-T1BPS, or BITS2-T1BPS.

– If the clock signals are provided by the external 8 kHz clock, Clock source type shouldbe set to 8KHZ.



10-5

10.1.5 Introduction to Time SynchronizationThe time synchronization function enables the time of the nodes of the GBSS system to besynchronized.

Synchronization is critical for identifying faults. For example, if an E1 link between theBSC6900 and the base station is broken, time synchronization between the BSC6900 and thebase station ensures that the same fault is reported to the M2000 by the BSC6900 and by thebase station is at the same time point.

The Simple Network Time Protocol (SNTP) is used to synchronize the time of the nodes of theGBSS system. SNTP serves the time synchronization between a server and multiple clients.Therefore, an SNTP server must be configured in the GBSS system. The SNTP server broadcaststime synchronization information to the SNTP clients.

Either the BSC6900 or the M2000 functions as an SNTP server. You can configure an SNTPserver by taking the field condition into consideration.

SNTP works on the basis of the Greenwich Mean Time (GMT). Therefore, when setting thetime at different nodes, you need to set the time zone where the node is located and decidewhether to set the Daylight Saving Time (DST). If the DST is set, you need to configure the starttime and end time of the DST and the time offset.

10.2 Data Configuration Principles for InterfacesThis section describes the configuration rules and reference information related to theBSC6900 interfaces.

10.2.1 Links on the A and Ater InterfacesThis section describes the configuration rules and reference information related to the A andAter interface links.

10.2.2 Timeslot Assignment on the Ater InterfaceThis section describes the timeslot assignment principles of the Ater OMLs and signaling linksand the dynamic assignment principles of traffic timeslots.

10.2.3 Configuration Rules of the Gb Interface LinksThis section describes the configuration rules and reference information related to the Gbinterface links.

10.2.1 Links on the A and Ater InterfacesThis section describes the configuration rules and reference information related to the A andAter interface links.

In BM/TC separated mode, the TCS can be configured locally or remotely. Accordingly, linksneed to be configured on the A and Ater interfaces. Table 10-3 lists the links that need to beconfigured on the A and Ater interfaces.




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Table 10-3 Links on the A and Ater interfaces

Interface TCS Configured Locally TCS ConfiguredRemotely

A interface SS7 link SS7 link

Ater interface - Ater OML and Ater signalinglink

Figure 10-1 shows the links that need to be configured on the A and Ater interfaces when theTCS is configured locally. The MPS communicates with the main TCS through the SCU boardsto transmit SS7 signaling, BSC6900 internal signaling, and OM information. The SS7 signalingis transparently transmitted to the XPU board in the MPS/EPS through the SCU board.

Figure 10-1 Links on the A and Ater interfaces (TCS configured locally)

Figure 10-2 shows the links that need to be configured on the A and Ater interfaces when theTCS is configured remotely. The SS7 signaling is transparently transmitted to the EIUa or XPUaboard in the MPS/EPS for processing through the Ater interface.



10-7

Figure 10-2 Links on the A and Ater interfaces (TCS configured remotely)

10.2.2 Timeslot Assignment on the Ater InterfaceThis section describes the timeslot assignment principles of the Ater OMLs and signaling linksand the dynamic assignment principles of traffic timeslots.

OM Timeslots and Signaling Timeslots on the Ater InterfaceIn BM/TC separated mode, the data related to the Ater interface needs to be configured.

When the TCS is configured locally, the SS7 signaling that is transparently transmitted over theAter interface occupies the timeslots on the Ater interface. The occupied bandwidth is the sameas that on the A interface.

When the TCS is configured remotely, the Ater OMLs, Ater signaling links, and transparentlytransmitted SS7 signaling occupy the timeslots on the Ater interface. The bandwidth occupiedby the SS7 signaling on the Ater interface is the same as that on the A interface. The timeslotbandwidth occupied by the Ater OMLs and Ater signaling links is subject to the BSC6900configuration. Table 10-4 lists the bandwidth of OM timeslots and signaling timeslots on theAter interface.

Table 10-4 Bandwidth of OM timeslots and signaling timeslots on the Ater interface

Typical Configuration Bandwidth of Ater OMLs Bandwidth of AterSignaling Links

MPS+TCS 16 timeslots of 64 kbit/s The MPS is configured withfour timeslots of 64 kbit/s.




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Typical Configuration Bandwidth of Ater OMLs Bandwidth of AterSignaling Links

MPS+EPS+2TCS 16 timeslots of 64 kbit/s Each BM subrack isconfigured with fourtimeslots of 64 kbit/s.

MPS+2EPS+3TCS 31 timeslots of 64 kbit/s Each BM subrack isconfigured with fourtimeslots of 64 kbit/s.

MPS+3EPS+4TCS 31 timeslots of 64 kbit/s Each BM subrack isconfigured with fourtimeslots of 64 kbit/s.

MPS+EPS+TCS 16 timeslots of 64 kbit/s Each BM subrack isconfigured with fourtimeslots of 64 kbit/s.

MPS+3EPS+2TCS 31 timeslots of 64 kbit/s Each BM subrack isconfigured with eighttimeslots of 64 kbit/s.

Traffic Timeslots on the Ater InterfaceThe traffic timeslots on the Ater interface are assigned dynamically.

Except for the timeslots occupied by the OMLs and signaling links, all the other timeslots onthe Ater interface are traffic timeslots, which form a resource pool. The unit of the resources inthe resource pool is 16 kbit/s sub-timeslot. All the idle sub-timeslots form an FIFO queue. Ifrequired, the sub-timeslots will be taken out of the queue.

For example, to establish a call, the EIUa board in the TCS selects a 16 kbit/s sub-timeslot (headelement of the FIFO queue) that is not used for the longest time from the resource pool and usesit as the Ater path for the call. When the call is terminated, the sub-timeslot is released to theresource pool and is added to the tail of the FIFO queue.

10.2.3 Configuration Rules of the Gb Interface LinksThis section describes the configuration rules and reference information related to the Gbinterface links.

The Gb interface can use the FR protocol or the IP protocol. For different protocols, theconfiguration parameters and configuration rules of the Gb interface links are different.

When the Gb interface uses the FR protocol, the configuration of Gb interface links involvesthe NSE, BC, NSVC, and PTPBVC. When the Gb interface uses the IP protocol, theconfiguration of Gb interface links involves the NSE, local NSVL, remote NSVL, and PTPBVC.Table 10-5 describes the configuration parameters.



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Table 10-5 Description of the configuration parameters

Configuration Parameter Description

BC (Bearer Channel) BC is the bearer channel for the frame relay.It is an E1/T1 timeslot group used to transferdata and signaling on the Gb interface.Bandwidth = Number of timeslots x 64 kbit/s.One or several BCs can be configured on oneE1. Each BC on an E1 is assigned a numberto facilitate local management. This numberis called BC ID. For an E1, the BC ID at thelocal end and the BC ID at the peer end canbe different, but the timeslot distribution atboth ends must be consistent.

NSVC (Network Service Virtual Connection) NSVC is the end-to-end virtual connectionbetween the BSC6900 and the SGSN. TheNSVC on the BSC6900 side and the NSVCon the SGSN side have a one-to-one relation.Their NSVCIs are the same. The NS dividesthe NSVCs into different groups. Each groupis identified by an NSEI. The NSVCs in thesame group work in load sharing mode. If oneNSVC fails, the NS switches the data on thisNSVC to another NSVC for transmission.One NSVC group of the BSC6900 isconnected to one SGSN.In an FR network, one NSVC corresponds toone PVC. In an IP network, one NSVC isidentified by the combination of the local IPaddress, local port, peer IP address, and peerport.

PVC (Permanent Virtual Connection) PVC is the permanent virtual connection forthe frame relay. It is a logical transmissionchannel. Multiple PVCs can be established onone BC. The PVCs are identified by DataLink Connection Identifiers (DLCIs). TheDLCI on the BSC6900 side and that on theSGSN side must be the same. The PVC iscreated together with the NSVC.




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Configuration Parameter Description

NSE The NSE is represented by a BVC set at theBSSGP layer and an NSVC set at the NSlayer. The NSE is identified by the NSEI. TheNSEI on the BSC6900 side and that on theSGSN side must be consistent.The NSE can be configured to use the FRprotocol or IP protocol. In the case of Gb overFR, BC and NSVC need to be configured. Inthe case of Gb over IP, device IP address, portnumber, routing, and NSVL need to beconfigured.

Local NSVL and remote NSVL A local NSVL is an IP end point at the localend. It is used to carry the services on aspecific NSE. The configuration parametersrelated to a local NSE are IP address and UDPport number, which are configured on theFG2a/FG2c/GOUc board. A remote NSVL isan IP end point at the remote end. It is aconnection parameter provided by the SGSN.The local and remote NSVLs specify acommunication link.

PTPBVC (Point To Point BSSGP VirtualConnection)

PTPBVC is the point-to-point virtualconnection at the BSSGP layer.

Figure 10-3 shows the logical connections at the NS and BSSGP layers between theBSC6900 and the SGSN.



10-11

Figure 10-3 Logical connections at the NS and BSSGP layers

l As shown in Figure 10-3, the NSE is represented by a BVC set at the BSSGP layer and anNSVC set at the NS layer. The NS layer provides data transmission channels for the BSSGPlayer. The data transmission channels for the cells under one NSE must be selected fromthe NSVC group under this NSE so that the traffic is evenly distributed among the NSVCs.

l In the case of Gb over FR, services are carried on the NSVC and BC. In the case of Gbover IP, services are carried on the links specified by the local and remote NSVLs.

10.3 Data Configuration Principles for Base StationsThis section describes the configuration rules and reference information related to a base station.

10.3.1 Numbering Rules of BTS ComponentsThis section describes the numbering rules of the BTS components, including the cabinets,subracks, and boards of the SingleRAN and non-SingleRAN 3900 series base stations.

10.3.2 Configuration Rules of the BTS BoardsThis section describes the configuration rules of the SingleRAN and non-SingleRAN BTSboards.

10.3.3 Configuration Rules of the TRX Send and Receive ModesThis section describes the configuration rules of the send mode, receive mode, and send andreceive modes of the TRX boards of all types.

10.3.4 Configuration Rules of the BTS Clock SourcesThis section provides the configuration rules of the BTS clock sources.

10.3.5 BTS Network Topologies




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The BSC6900 provides flexible BTS network topologies on the Abis interface. These topologiesare star topology, chain topology, tree topology, and ring topology.

10.3.6 TDM-Based Networking on the Abis InterfaceIn TDM-based networking mode, the BSC6900 and the base station communicate with eachother through the SDH/PDH network, and TDM transmission is applied to the Abis interface.

10.3.7 IP-Based Networking on the Abis InterfaceIn IP-based networking mode, the BSC6900 and the base station communicate with each otherthrough the IP/SDH/PDH network, and layer 3 of the protocol stack for the Abis interface usesthe IP protocol.

10.3.8 Typical Configuration Scenarios of the Radio LayerThis section provides several typical configuration modes of the BTS radio layer in terms ofcells and TRXs. The difference between different configuration modes mainly lies in the numberof cells and TRXs at different BTSs.

10.3.9 Concepts of the BTS Multiplexing ModeThis section describes BTS multiplexing, that is, the multiplexing of the LAPD signaling on theE1 timeslots of the Abis interface. The BSC6900 provides the 64 kbit/s statistical multiplexingmode and the physical 16 kbit/s multiplexing mode.

10.3.10 Instances of BTS Multiplexing ModesThis section describes the E1 timeslot assignment in 1:1, 2:1, 3:1, and 4:1 multiplexing modes.

10.3.11 Principles of DFCU/DFCB ConfigurationThe filter combiner unit for DTRU BTS is located in the DAFU subrack of the BTS3012 orBTS3012AE or BTS3012 II. The filter combiner unit features a lower combination loss, andtherefore, can meet the requirements of large coverage and save antennas when large-scale BTSsare used.

10.3.12 Configuration Rules of Upgrading Cabinets from Version 8.x to Version 9.0This section describes the configuration rules of upgrading cabinets from an 8.x version to the9.0 version. The components involved in the upgrade are the BBU subrack, RF subrack, andmonitoring boards.

10.3.13 Configuration Guidelines for Typical TRX PowerThe typical TRX power specifications are only used as reference for onsite configurations.Specific data configurations should be adjusted according to onsite situations.

10.3.1 Numbering Rules of BTS ComponentsThis section describes the numbering rules of the BTS components, including the cabinets,subracks, and boards of the SingleRAN and non-SingleRAN 3900 series base stations.

Numbering Rules of the SingleRAN BTS ComponentsCabinet configuration

A site can be configured with both the virtual cabinet and the physical cabinet. Components thata physical cabinet can house depend on the cabinet type. A virtual cabinet, however, can houseall possible components. The following table provides the numbering rules of cabinets.



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Table 10-6 Numbering rules of cabinets

Cabinet Number Description

0 Cabinet 0 houses the BBU where the maincontrolling board is located.The BTS type determines whether a virtual ora physical cabinet is used.1. In the case of a distributed base station

without a physical cabinet, a virtualcabinet can be used.

2. In the case of a distributed base stationwith a physical cabinet or a macro basestation, a physical cabinet can be used.

1-62 Cabinets 1-62 are numbered by the useraccording to the actual situation.NOTE

According to the preceding application scenarioanalysis, a maximum of eight cabinets can beconfigured for the GU mode when the TCS isconfigured locally.

Table 10-7 Cabinet selection

BTS Model Optional Cabinet Type Description

DBS3900 APM30/APM100/APM200/TMC/BBC/PS4890/OMB/VIRTUAL

Generally, the APM30cabinet is used.

BTS3900/BTS3900A APM30/APM100/APM200/TMC/BBC/PS4890/OMB/RFC-6/BTS3900/BTS3900L/VIRTUAL

l For the BTS3900, theBTS3900, PS4890, orTMC cabinet is generallyused.

l For the BTS3900A, theAPM30, RF cabinet, orTMC cabinet is generallyused.

Subrack configuration

1. If the cabinet type is determined, physical subracks, such as the BBU3900 subrack and theRFU subrack, are installed before delivery.

2. Some optional peripherals, such as the EMU and the GPS receiver, can occupy anindependent subrack for easy maintenance and extensibility.

All the subracks use the same numbering rule. For a subrack that is installed in the cabinet beforedelivery, the subrack number cannot be modified. For an extension subrack, the user can definethe subrack number. The following table provides the numbering rules of subracks.




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Table 10-8 Numbering rules of subracks

Subrack Number Subrack Type Description

0 Physical subrack The number of the BBUsubrack is 0.

1 Reserved This subrack number is usedonly when two BBUs areinterconnected.

2-3 Reserved -

4 Physical subrack RFU

5 Physical subrack RFU

6 Reserved -

7 Physical subrack PMU

8 Physical subrack TCU

9 Physical subrack BAT

10 Reserved This subrack number is notused currently.

11 Physical subrack FMU

12 Physical subrack FMU

13-39 Reserved Reserved for physicalsubracks

40-59 Extension subrack Generally, a site isconfigured with thefollowing peripherals: oneGPS receiver, one EMU, onesite management unit(SMU), and a maximum offour GATMs.The peripherals do not needto be configured in sequence.

60-254 Physical subrack RRU subrack

Slot configuration

The mapping between the slot number and the board type depends on the hardwarespecifications, as listed in the following table.



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Table 10-9 Numbering rules of slots

CabinetNumber

SubrackNumber

SubrackType

SlotNumber

Board Type Description

0-62 0 BBU3900 0-4 USCU

6 GTMU The GTMUmust be fixedin slot 6.

16 FAN The FANmust be fixedin slot 16.

18-19 UPEU/UEIU

The UPEU/UEIU mustbe fixed inslots 18 and19.

4-5 RFU 0-5 DRFU/GRFU/MRFU

7 PMU 0 PMU

1-10 PSU

8 TCU 0 TCU

9 BAT No board is configured in slot 9.

11-12 FMU 0 FMU

40-59 GPSreceiver/EMU/SMU/GATM

0 DGPS/EMU/GATM

60-254 RRU 0 DRRU/GRRU/MRRU

Numbering Rules of the Non-SingleRAN BTS ComponentsNOTE

For a non SingleRAN BTS, the cabinet type is set according to the BTS type, for example, cabinet typeBTS3900A_GSM is selected for the BTS3900A.




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Table 10-10 Numbering rules of the non-SingleRAN BTS components

Board Type Optional Slot Number Optional SubrackNumber

DEMU 0, 1 2NOTE

The APMU and DTCU boardscan be configured in slots 0 to23 of subrack 5.

APMU/DPMU 2-5

DTCU 6, 7

FMU, FMUA 8-11

GATM 16, 17

GTMU 6 0

UBFA 16

UEIU 18-19

UPEU

10.3.2 Configuration Rules of the BTS BoardsThis section describes the configuration rules of the SingleRAN and non-SingleRAN BTSboards.

Configuration Rules of the SingleRAN BTS Boards

BTS3900

Table 10-11 Configuration rules of the BTS3900 boards

Board Type Automatic Configuration or ManualConfiguration

EMU Manual configuration. An EMU needs to beconfigured when the number of Booleaninputs provided by the UPEU and UEIUcannot meet the requirements.

PMU Manual configuration

FMU Manual configuration

GATM Manual configuration. A GATM needs to beconfigured when the newly deployed GSMBTS is configured with a RET antenna orTMA.

PSU Manual configuration

GTMU Automatic configuration



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FAN Automatic configuration

UEIU Manual configuration

UPEU Automatic configuration

UBRI Manual configuration

USCU Manual configuration

DRFU Manual configuration

GRFU Manual configuration

MRFU Manual configuration

DBS3900

Table 10-12 Configuration rules of the DBS3900 boards




DTCU Manual configuration







DRRU Manual configuration

GRRU Manual configuration

MRRU Manual configuration

BTS3900A




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Table 10-13 Configuration rules of the BTS3900A boards





FMUA/FMU Manual configuration








DRFU Manual configuration

GRFU Manual configuration

MRFU Manual configuration

Configuration Rules of the Non-SingleRAN BTS BoardsBTS3900B

Table 10-14 Configuration rules of the BTS3900B boards


3900B Automatic configuration

BTS3900E



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Table 10-15 Configuration rules of the BTS3900E boards


DEMU Manual configuration

APMU Manual configuration


3900E Automatic configuration

BTS3012



DTMU Automatic configuration

DEMU Manual configuration

DCSU Manual configuration

DCCU Automatic configuration

DATU Manual configuration

DPTU Manual configuration

DABB Manual configuration

DCMB Automatic configuration in the case of 12TRXs

ECMB Automatic configuration in the case of 18TRXs

DBS3900

Table 10-17 Configuration rules of the DBS3900 boards







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DEMU Manual configuration. A DEMU needs to beconfigured when the number of Booleaninputs provided by the UPEU and UEIUcannot meet the requirements.



UBFA Automatic configuration



BTS3900



FMU Automatic configuration







BTS3900A



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Table 10-19 Configuration rules of the BTS3900A boards




FMUA Manual configuration







10.3.3 Configuration Rules of the TRX Send and Receive ModesThis section describes the configuration rules of the send mode, receive mode, and send andreceive modes of the TRX boards of all types.

The following table provides the configuration rules of the TRX send and receive modes.




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Table 10-20 Configuration rules of the TRX send and receive modes

TRXBoard

SendMode

ReceiveMode

Send andReceiveMode

Remarks

DRRU

PBTTransmitdiversityDynamictransmitdiversityDynamicPBTIndependent transmitorcombination

MainanddiversityFour-wayreceivediversity

Singlefeeder[1TX +1RX]Singlefeeder[1TX +2RX]Doublefeeder[2TX +2RX]Doublefeeder[2TX +4RX]Doublefeeder[1TX +1RX]Doublefeeder[1TX +2RX]

1. Send Mode can be set to PBT only whenthe DRRU is configured with onefrequency.

2. Send Mode can be set to DIVERSITY onlywhen the DRRU is configured with onefrequency and DRRU Snd Rcv Mode is setto DOUBLE_ANTENNA orDOUBLEFOUR_ANTENNA.

3. Receive Mode can be set toFOURDIVERSITY only when the DRRUis configured with one frequency andDRRU Snd Rcv Mode is set toDOUBLEFOUR_ANTENNA.

4. If SGL_ANTENNA orDOUBLEFOUR_ANTENNA is selected,the relation between the RRUs needs to beconfigured.



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TRXBoard

SendMode

ReceiveMode

Send andReceiveMode

Remarks

DRFU

PBTTransmitdiversityDynamictransmitdiversityDynamicPBTIndependent transmitorcombination



1. Send Mode can be set to PBT only whenthe DRFU is configured with onefrequency.

2. Send Mode can be set to DIVERSITY onlywhen the DRFU is configured with onefrequency and DRFU Snd Rcv Mode is setto DOUBLE_ANTENNA orDOUBLEFOUR_ANTENNA. ReceiveMode can be set to FOURDIVERSITYonly when the DRFU is configured with onefrequency and DRFU Snd Rcv Mode is setto DOUBLEFOUR_ANTENNA.




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TRXBoard

SendMode

ReceiveMode

Send andReceiveMode

Remarks

GRRU/MRRU

Non-combinationTransmitdiversityDynamictransmitdiversity



1. If DOUBLEFOUR_ANTENNA isselected, the relation between the RRUsneeds to be configured.

2. Send Mode can be set to DIVERSITY onlywhen DOUBLE_ANTENNA orDOUBLEFOUR_ANTENNA is selected.



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TRXBoard

SendMode

ReceiveMode

Send andReceiveMode

Remarks

GRFU/MRFU

TransmitdiversityIndependent transmitorcombination



If DOUBLEFOUR_ANTENNA is selected,the relation between the RRUs needs to beconfigured.

10.3.4 Configuration Rules of the BTS Clock SourcesThis section provides the configuration rules of the BTS clock sources.

The following table lists the configuration rules of the BTS clock sources.




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Table 10-21 Configuration rules of the BTS clock sources

Clock Mode Clock Source Type

BTSBoard

BTSModel

TransmissionMode

InternalClock

TraceBSCClock

ExternalSyncclock

IPClock

TraceTransportClock

TraceGPSClock

UmClock

PeerClock

GTMU

DBS3900BTS3900BTS3900ABTS3900L

IP overFE

Supported

Notsupported

Supported

Supported

Supported

Supported

Notsupported

Supported

IP overE1

Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Supported

HDLC Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Supported

TDM Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Supported

DTMU

BTS3012BTS3012AEBTS3012II

IP overFE

Supported

Notsupported

Supported

Supported

Supported

Supported

Notsupported

Notsupported

IP overE1

Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Notsupported

HDLC Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Notsupported

TDM Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Notsupported

DOMU

BTS3006CBTS3002E

HDLC Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Notsupported

TDM Supported

Supported

Supported

Notsupported

Notsupported

Supported

Notsupported

Notsupported

BTS3900B

BTS3900B

IP overFE

Supported

Notsupported

Notsupported

Supported

Notsupported

Notsupported

Supported

Supported



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Clock Mode Clock Source Type

BTSBoard

BTSModel

TransmissionMode

InternalClock

TraceBSCClock

ExternalSyncclock

IPClock

TraceTransportClock

TraceGPSClock

UmClock

PeerClock

BTS3900E

BTS3900E

IP overFE

Supported

Notsupported

Supported

Supported

Supported

Notsupported

Notsupported

Notsupported

HDLC Supported

Supported

Supported

Notsupported

Notsupported

Notsupported

Notsupported

Notsupported

TDM Supported

Supported

Supported

Notsupported

Notsupported

Notsupported

Notsupported

Notsupported

10.3.5 BTS Network TopologiesThe BSC6900 provides flexible BTS network topologies on the Abis interface. These topologiesare star topology, chain topology, tree topology, and ring topology.

Star TopologyIn a star topology, BTSs connect to a BSC6900 directly, and the BTSs do not have lower-levelBTSs. Star topology is a commonly used network topology. It is applicable in common scenarios,especially in densely populated areas. Figure 10-4 shows the star topology.

Figure 10-4 Star topology




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The advantages of the star topology are as follows:

l Simple network structure

l Easy engineering implementation

l Convenient network maintenance

l Flexible capacity expansion

l High network reliability

Disadvantages: Compared with other topologies, the star topology requires a largest quantity oftransmission cables. Especially for small-scaled BTSs, transmission resource utilization in thestar topology is not high. A timeslot integration device can be used to solve this problem.

Chain Topology

In a chain topology, BTSs are cascaded. The BTSs on a cascading link can only process thetimeslots of their own and transparently transmit the timeslots of the lower-level BTSs. The BTSchain topology is applicable to sparsely populated areas in the strip-like terrain, such as areasalong highways and high-speed railways. If the star topology is used in this situation, thetransmission resource is wasted. Therefore, the chain topology is recommended. Figure 10-5shows the chain topology.

Figure 10-5 Chain topology

Advantages: The chain topology can reduce the costs of transmission equipment and engineeringconstruction and save the rent for the transmission links.

Disadvantages:

l The reliability of the transmission link is poor because the signal transmission passesthrough multiple nodes.

l A faulty BTS may affect the normal operation of its lower-level BTSs.

l The number of cascading levels must not exceed five.

To minimize the impact of the faulty upper-level BTS on lower-level BTSs, the Abis bypassfunction is provided.

In bypass mode, a relay switch is installed on the BTS. When a BTS is running normally, thetimeslots of the lower-level BTSs are switched over from the incoming E1 port to the outgoingE1 port through the switching board of the BTS. When the BTS fails to provide services due topower-off or other reasons, the relay switch works to ensure the direct connection between theincoming E1 port and the outgoing E1 port on the BTS. Therefore, the lower-level BTSs stillretain the connection to the BSC6900. Figure 10-6 shows the bypass function of the BTS.



10-29

Figure 10-6 Bypass function of the BTS

Tree Topology

In a tree topology, one site is connected with two or more subsites. The tree topology is thecombination of the chain topology and the star topology. The tree topology is applicable to areaswhere network structures, BTS distribution, and subscriber distribution are complicated. Figure10-7 shows the tree topology.

Figure 10-7 Tree topology

Advantages: The number of transmission cables required in the tree topology is smaller thanthat in the star topology.

Disadvantages:




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l In a tree topology, the signal transmission passes through multiple nodes. Therefore, thetransmission reliability is relatively low, the engineering construction is difficult, and themaintenance is inconvenient.

l A faulty BTS may affect the normal operation of its lower-level BTSs.l It is inconvenient to expand the capacity of the network.l The number of cascading levels must not exceed five.

Ring TopologyThe ring topology is a special chain topology. Several BTSs form a chain, and the lowest-levelBTS is connected to the BSC6900, thus forming a ring. If there is a breakpoint on the ring, theBTSs that precede the breakpoint remain unchanged in the network topology, whereas the BTSsthat follow the breakpoint form a new chain connection in the reverse direction. The ringtopology is applicable to common scenarios. Due to its strong self-healing capability, the ringtopology is preferably applied so long as the transmission links meet the networkingrequirements. Figure 10-8 shows the ring topology.

Figure 10-8 Ring topology

Advantages: The ring topology has a strong self-healing capability. If the E1 link at a point isbroken, a new chain connection can be formed without affecting the ongoing services.

Disadvantages: In a ring topology, there is always a segment of transmission link that does nottransmit any data.

10.3.6 TDM-Based Networking on the Abis InterfaceIn TDM-based networking mode, the BSC6900 and the base station communicate with eachother through the SDH/PDH network, and TDM transmission is applied to the Abis interface.

TDM-Based NetworkingIn this networking mode, the EIUa/OIUa/POUc board of the BSC6900 functions as the Abisinterface board. The EIUa board provides E1/T1 ports, the OIUa board provides channelizedSTM-1 ports, and the POUc board provides channelized STM-1 ports and OC-3 ports. Figure10-9 shows the TDM-based networking on the Abis interface.



10-31

Figure 10-9 TDM-based networking on the Abis interface

Features of Networking Modes

Advantages: The networking is mature, QoS-assured, safe, and reliable. Telecom operators canmake full use of the SDH/PDH transmission network resources.

Disadvantages: The cost of the TDM networking mode is higher than that of the IP networkingmode.

10.3.7 IP-Based Networking on the Abis InterfaceIn IP-based networking mode, the BSC6900 and the base station communicate with each otherthrough the IP/SDH/PDH network, and layer 3 of the protocol stack for the Abis interface usesthe IP protocol.

IP over E1 Networking

In this networking mode, the BSC6900 and the base station communicate with each other throughthe SDH/PDH network. The PEUa/POUc board functions as the Abis interface board. The PEUaboard provides E1/T1 ports, and the POUc board provides STM-1 ports and OC-3 ports. SeeFigure 10-10.

Figure 10-10 IP over E1 Networking

IP over Ethernet Networking (Layer 2)

In this networking mode, the BSC6900 and the base station communicate with each other throughthe IP network, and the data transmitted between them is processed by the switch according tothe data link layer protocol. The FG2a/GOUa/FG2c/GOUc board of the BSC6900 functions asthe Abis interface board and provides FE/GE ports. Figure 10-11 shows the IP over Ethernetnetworking (layer 2).




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Figure 10-11 IP over Ethernet networking (layer 2)

IP over Ethernet Networking (Layer 3)

In this networking mode, the BSC6900 and the base station communicate with each other throughthe IP network, and the data transmitted between them is processed by the router according tothe IP protocol. The FG2a/GOUa/FG2c/GOUc board of the BSC6900 functions as the Abisinterface board and provides FE/GE ports. Figure 10-12 shows the IP over Ethernet networking(layer 3).

Figure 10-12 IP over Ethernet networking (layer 3)

Features of Networking Modes

Advantages:l IP over E1 Networking

– Telecom operators can make full use of the SDH/PDH transmission network resources.

– The networking is mature, QoS-assured, safe, and reliable.l IP over Ethernet Networking

– The base station provides large-capacity bandwidth through FE/GE ports, thusfacilitating the upgrade and capacity expansion.

– The transmission network supports the evolution from the GSM TDM network to theIP network.

Disadvantages:l IP over E1 Networking



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This networking mode does not meet the requirements of the evolution from the telecomnetwork to the IP network.

l IP over Ethernet NetworkingThe QoS of the network cannot be guaranteed easily. Therefore, the end-to-end QoSmechanism must be adopted.

10.3.8 Typical Configuration Scenarios of the Radio LayerThis section provides several typical configuration modes of the BTS radio layer in terms ofcells and TRXs. The difference between different configuration modes mainly lies in the numberof cells and TRXs at different BTSs.

Definition of Typical ConfigurationGenerally, BTSs have two configuration modes, that is, S x and S x/x/x.l "S" represents a BTS.l The quantity of "x"s represents the number of cells.l The value of "x" indicates the number of TRXs under each cell.

For example, S2 indicates that there is one cell under a BTS, and there are two TRXs under thiscell. S2/2/2 indicates that there are three cells under a BTS, and two TRXs under each cell.

Typical Configuration ScenariosThe typical configuration scenarios of BTSs are as follows:l S2l S2/2/2l S4/4/4l S6/6/6l S8/8/8l S12/12/12

The BTS configuration processes in all scenarios are the same. The configuration objects andquantity, however, are different from each other.

10.3.9 Concepts of the BTS Multiplexing ModeThis section describes BTS multiplexing, that is, the multiplexing of the LAPD signaling on theE1 timeslots of the Abis interface. The BSC6900 provides the 64 kbit/s statistical multiplexingmode and the physical 16 kbit/s multiplexing mode.

Timeslots and Sub-TimeslotsThe bandwidth of each E1 link is 2.048 Mbit/s, which consists of 32 timeslots. The transmissionrate on each timeslot is 64 kbit/s. Each timeslot is divided into four sub-timeslots, and thetransmission rate on each sub-timeslot is 16 kbit/s.

Timeslot Types of the Abis InterfaceThe timeslots of the BTS Abis interface are classified into the following types:




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l Operation and maintenance link (OML)

link for operation and maintenance of a BTS. Each BTS has only one OML, and thetransmission rate on the OML is 64 kbit/s. An OML can be multiplexed with only the RSLsof the same BTS.

l Radio signaling link (RSL)

Signaling link of a TRX. Each TRX has one RSL at a rate of 64 kbit/s. RSLs can bemultiplexed with only the OML or other RSLs of the same BTS.

l Extended signaling link (ESL)

Extended signaling link. When the timeslot assignment mode on the Abis interface of theBTS is set to FLEX_ABIS, each BTS requires one 64 kbit/s ESL for transmitting thesignaling of dynamic Abis timeslot connection. ESL can be multiplexed with only the OMLof the same BTS in a 64 kbit/s timeslot of the same E1 link.

l Traffic channel (TCH)

Traffic channel of a TRX. The full transmission rate is 16 kbit/s, and the half transmissionrate is 8 kbit/s.

l Idle

Idle timeslot of a BTS, which has a rate of 16 kbit/s. Idle timeslots can be multiplexed withonly the TCHs of the same cabinet group.

l Semi

Monitoring timeslot of a BTS, which has a rate of 8 kbit/s, 16 kbit/s, 32 kbit/s, or 64 kbit/s and cannot be multiplexed with timeslots of other types.

64 kbit/s Statistical Multiplexing Mode

Statistical multiplexing is a technology where n channels share one 64 kbit/s timeslot, each in adifferent time slice, that is, Time Division Multiplexing (TDM). In statistical multiplexing mode,multiple channels are multiplexed onto one 64 kbit/s bandwidth.

The 64 kbit/s statistical multiplexing mode consists of the following types:

l 1:1

l 2:1

l 3:1

l 4:1

l 5:1

l 6:1

That is, n:1 (n<=6), where n represents the number of signaling links and 1 represents one E1timeslot (64 kbit/s) on the Abis interface.

When the Abis interface uses a 64 kbit/s timeslot for signaling transmission, traffic channelscannot use the same timeslot. RSLs use 64 kbit/s timeslots through multiplexing.

In all the n:1 multiplexing modes, the speech rate is 16 kbit/s or 8 kbit/s (half rate). Four full-rate traffic channels or eight half-rate traffic channels occupy one 64 kbit/s timeslot on the Abisinterface. The rate of all the signaling links is 64 kbit/s. Based on the multiplexing mode (n:1),n signaling timeslots occupy one E1 timeslot (64 kbit/s) on the Abis interface. All the timeslotsimplement 64 kbit/s switching in the Abis interface board of the BSC6900.



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Physical 16 kbit/s Multiplexing ModeIn physical 16 kbit/s multiplexing mode, a 16 kbit/s sub-timeslot is permanently assigned to achannel, that is, this channel exclusively uses this timeslot.

When the Abis interface uses a 16 kbit/s rate for signaling transmission, timeslots of the E1 link,excluding timeslot 0 (synchronization timeslot), can be configured as traffic timeslots orsignaling timeslots. Therefore, the multiplexing ratio is not involved.

10.3.10 Instances of BTS Multiplexing ModesThis section describes the E1 timeslot assignment in 1:1, 2:1, 3:1, and 4:1 multiplexing modes.

NOTE

The timeslot assignment of each multiplexing mode is based on the following conditions:

l The speech rate is 16 kbit/s permanently. Four channels of speech occupy one 64 kbit/s timeslot on theAbis interface.

l For the first TRX, channel 0 (T00C0) is the BCCH and channel 1 (T00C1) is the SDCCH.

l When the BTSs that support the Flex Abis function use the 5:1 or 6:1 multiplexing mode, each BTSneeds to be configured with one ESL.

l When the BTSs that support the Flex Abis function use the 5:1 and 6:1 multiplexing modes, themultiplexing ratios of OML, ESL, and RSL are 1:1:3 and 1:1:4 respectively. The differences betweenthe multiplexing modes 5:1 and 4:1, and 6:1 and 4:1 lie in only their multiplexing of the RSLs. BCCHsand SDCCHs use RSLs, that is, the timeslots used by T00C0 and T00C1 are included in the timeslotsused by the RSLs. Therefore, the 5:1 or 6:1 mode is not displayed in the tables.

Instances of the 1:1 Multiplexing ModeAssume that BTS0 is configured with one cell and four TRXs, the channels in the cell use defaultsettings, and the multiplexing mode is 1:1. Table 10-22 lists the timeslot assignment on the Abisinterface.

Table 10-22 Timeslot assignment in 1:1 multiplexing mode

TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7

0 Synchronization Synchronization Synchronization Synchronization

1 RSL00

2 T00C2 T00C3 T00C4 T00C5

3 T00C6 T00C7 T01C0 T01C1

4 RSL01

5 T01C2 T01C3 T01C4 T01C5

6 T01C6 T01C7 T02C0 T02C1

7 RSL02

8 T02C2 T02C3 T02C4 T02C5




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TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7

9 T02C6 T02C7 T03C0 T03C1

10 RSL03

11 T03C2 T03C3 T03C4 T03C5

12 T03C6 T03C7

...

31 OML0

Instances of the 2:1 Multiplexing ModeAssume that BTS0 is configured with one cell and four TRXs, the channels in the cell use defaultsettings, and the multiplexing mode is 2:1. Table 10-23 lists the timeslot assignment on the Abisinterface.


TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7


1 T00C2 T00C3 T00C4 T00C5

2 T00C6 T00C7 T01C0 T01C1

3 RSL01+RSL02

4 T01C2 T01C3 T01C4 T01C5

5 T01C6 T01C7 T02C0 T02C1

6 T02C2 T02C3 T02C4 T02C5

7 T02C6 T02C7 T03C0 T03C1

8 RSL03

9 T03C2 T03C3 T03C4 T03C5

10 T03C6 T03C7

11



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TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7

...

31 OML0+RSL00

Instances of the 3:1 Multiplexing Mode

Assume that BTS0 is configured with one cell and four TRXs, the channels in the cell use defaultsettings, and the multiplexing mode is 3:1. Table 10-24 lists the timeslot assignment on the Abisinterface.


TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7


1 T00C2 T00C3 T00C4 T00C5

2 T00C6 T00C7 T01C0 T01C1

3 T01C2 T01C3 T01C4 T01C5

4 T01C6 T01C7 T02C0 T02C1

5 RSL02+RSL03

7 T02C2 T02C3 T02C4 T02C5

9 T02C6 T02C7 T03C0 T03C1

11 T03C2 T03C3 T03C4 T03C5

12 T03C6 T03C7

13

...

31 OML0+RSL00+RSL01

Instances of the 4:1 Multiplexing Mode

Assume that BTS0 is configured with one cell and four TRXs, the channels in the cell use defaultsettings, and the multiplexing mode is 4:1. Table 10-25 lists the timeslot assignment on the Abisinterface.




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TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7


1 T00C2 T00C3 T00C4 T00C5

2 T00C6 T00C7 T01C0 T01C1

3 T01C2 T01C3 T01C4 T01C5

4 T01C6 T01C7 T02C0 T02C1

5 T02C2 T02C3 T02C4 T02C5

6 T02C6 T02C7 T03C0 T03C1

7 RSL03

8 T03C2 T03C3 T03C4 T03C5

9 T03C6 T03C7

10

...

31 OML0+RSL00+RSL01+RSL02

Instances of the Physical 16 kbit/s Multiplexing ModeTable 10-26 lists the timeslot assignment on the Abis interface in the physical 16 kbit/smultiplexing mode.

Table 10-26 Instances of the physical 16 kbit/s multiplexing mode

TimeslotNumber

Sub-Timeslot Number

0 and 1 2 and 3 4 and 5 6 and 7


1 Traffic timeslot Traffic timeslot Traffic timeslot Traffic timeslot

2 Signaling timeslot Traffic timeslot Signaling timeslot Traffic timeslot

...

30 Signaling timeslot Traffic timeslot Signaling timeslot Traffic timeslot

31 Signaling timeslot Signaling timeslot Signaling timeslot Signaling timeslot



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10.3.11 Principles of DFCU/DFCB ConfigurationThe filter combiner unit for DTRU BTS is located in the DAFU subrack of the BTS3012 orBTS3012AE or BTS3012 II. The filter combiner unit features a lower combination loss, andtherefore, can meet the requirements of large coverage and save antennas when large-scale BTSsare used.

There are two types of filter combiner unit. One is DFCU with a built-in microband combiner,and the other is DFCB (B as the model) without a built-in microband combiner.

Configuration Rules of the Boardsl The DFCU can be used independently to provide the four-in-one output.

l The DFCB is a dual two-in-one combiner that provides two outputs, namely, tributary Aand tributary B corresponding to COM1 (output) and COM2 (output) of the DFCB. Eachtributary can be used to combine the output of at most two TRXs. The DFCB cannot beused independently because it has no diversity receive channel. Therefore, it can be usedonly with the DFCU in cascading mode to support the S6 and S12 cell configurations.

l The DFCU/DFCB must be configured in an even slot, such as slot 0, 2, or 4, in the DAFUsubrack, namely, the even slots of the original DDPU. The odd slot next to the DFCU/DFCB slot cannot be configured with any board. In other words, a DFCU/DFCB occupiestwo slots.

Configuration Rules of Antenna Feeder Connections in the DFCUl The TRX to be tuned in the DFCU must be configured on downlink tributary A of the

DFCU. Tributary B cannot be configured with TRXs.

l In the antenna feeder connections of one DFCU, a maximum of four TRXs can beconfigured.

l In the antenna feeder connections of the DFCU, none of the TRXs can be configured withRF FH.

l In the antenna feeder connections of the DFCU, the spacing between any two TRXs mustbe at least three frequencies.

l In the antenna feeder connections of the DFCU, the transmit mode of any TRX cannot beset to wideband combination. By default, the transmit mode is set to transmit independency.

l When the DFCU uses six-in-one output mode, it must work with the DFCB. You need toconfigure the extended connection relation for the DFCU to describe how the DFCB iscascaded to the DFCU. The DFCB provides dual two-in-one outputs.

Configuration Rules of Antenna Feeder Connections in the DFCBl A TRX is connected to tributary A or B of the DFCB based on actual conditions.

l Both tributary A and tributary B of the DFCB can be configured with a maximum of twoTRXs.

l The spacing between the two TRXs in both tributaries A and B must be at least threefrequencies. The frequency spacing between tributary A and tributary B has no restrictionbecause the two tributaries are independent of each other.

l In the antenna feeder connections of the DFCB, none of the TRXs can be configured withRF FH.




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l In the antenna feeder connections of the DFCB, the transmit mode of any TRX cannot beset to wideband combination.

l The DFCB does not require extension connections. The extension connections areconfigured on the DFCU.

10.3.12 Configuration Rules of Upgrading Cabinets from Version8.x to Version 9.0

This section describes the configuration rules of upgrading cabinets from an 8.x version to the9.0 version. The components involved in the upgrade are the BBU subrack, RF subrack, andmonitoring boards.

Configuration Rules of Upgrading the BBU Subrack

You need to determine the type of cabinet 0 according to the BTS type during the upgrade,because the BBU is always installed in cabinet 0.

DBS3900/BTS3900A

Table 10-27 Configuration rules of upgrading the BBU subrack

If Cabinet 0 Has... Then, Modify the Type of Cabinet 0 to...

DPMU PS4890

Local APMU and its type is APM4815 OMB

Local APMU and its type is APM30 APM30

Local DTCU TMC

Other boards Virtual

BTS3900

During the RFU upgrade, if the type of cabinet 0 is BTS3900, you need not modify the cabinettype.

The cabinet numbers, subrack numbers, and slots numbers for the boards in the BBU need notbe changed, but the UBFA board needs to be renamed FAN.

Configuration Rules of Upgrading the RF Subrack

Upgrade of the RFU

An RFU may be upgraded in the following two conditions: upgrading a BTS of version 8.x thatdoes not support the filler panel to a BTS of version 9.0, or upgrading a BTS of version 8.x thatsupports the filler panel to a BTS of version 9.0.

l Upgrading a BTS of version 8.x that does not support the filler panel to a BTS of version9.0



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Table 10-28 Configuration rules of upgrading the RFU (not supporting the filler panel)

If the Type ofBTS Is...

Cabinet,Subrack, SlotNumbers BeforeUpgrade Are...

Cabinet,Subrack, SlotNumbers AfterUpgrade Are...

Then, Modify theType of Cabinet 0to...

BTS3900 [Cabinet X,Subrack 3, Slot Y]

[Cabinet X,Subrack 4, Slot Y]

BTS3900

BTS3900A [Cabinet X,Subrack 3, Slot Y]

[Cabinet X+1,Subrack 4, Slot Y]

RFC-6 or add anRFC-6 cabinet

l Upgrading a BTS of version 8.x that supports the filler panel to a BTS of version 9.0

Table 10-29 Configuration rules of upgrading the RFU (supporting the filler panel)

Number ofCabinets

BTSModel

CPRICascading

CPRIPortNumberBeforeUpgrade

Number ofCascadingLevelsonCPRIChainBeforeUpgrade

CabinetNumber AfterUpgrade

SubrackNumber AfterUpgrade

SlotNumber AfterUpgrade

1 BTS3900

CPRIportsconnected in thestartopology

N (0 <=N <= 5)

0 0 4 N

1 BTS3900A

CPRIportsconnected in thestartopology

N (0 <=N <= 5)

0 1 4 N

2 BTS3900

CPRIports attwolevels ofcascading

N (0 <=N <= 5)

H (0 <=H <= 1)

N % 2 4 INT(N/2) * 2 +H




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Number ofCabinets

BTSModel

CPRICascading

CPRIPortNumberBeforeUpgrade

Number ofCascadingLevelsonCPRIChainBeforeUpgrade

CabinetNumber AfterUpgrade

SubrackNumber AfterUpgrade

SlotNumber AfterUpgrade

2 BTS3900A

CPRIports attwolevels ofcascading

N (0 <=N <= 5)

H (0 <=H <= 1)

N % 2 +1

4 INT(N/2) * 2 +H

3 BTS3900

CPRIports atthreelevels ofcascading

N (0 <=N <= 5)

H (0 <=H <= 2)

N/2 4 (N % 2)* 3 + H

3 BTS3900A

CPRIports atthreelevels ofcascading

N (0 <=N <= 5)

H (0 <=H <= 2)

N/2 + 1 4 (N % 2)* 3 + H

Upgrade of the RRU

Table 10-30 Configuration rules of upgrading the RRU

If the BTS is... Then... Remarks

GU dual-mode base station Number of the RRU subrack= HOP x 6 + (PORT - 3) + 60,where 0 <= HOP <= 2, 0 <=PORT <= 5, and both thecabinet number and cabinetnumber are 0.

If the ADDBTSSFPMODE commandcan be executed, the currentBTS is a GU dual-mode basestation.



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If the BTS is... Then... Remarks

Other conditions Number of the RRU subrack= SLOT x 20 + HOP x 6 +PORT + 60, (GSM) SLOT =0, 0 <= HOP <= 2, 0 <=PORT <= 5, and both thecabinet number and cabinetnumber are 0.

Configuration Rules for Upgrading the Monitoring BoardsWhen running MML commands to configure monitoring boards, the following parameters needto be specified: the cabinet number of the management object (MCN), the subrack number ofthe management object (MSRN), the slot number of the management object (MSN), the numberof the port to which the management object connects (MPN), and the IP address of the monitoringboard (MADDRESS). Regarding a local board, the management objects refer to the cabinet,subrack, and slots of the BBU. The following table provides the MADDRESS after upgradingthe monitoring boards.

Table 10-31 IP addresses of the monitoring boards

Monitoring Board Communication Address

EMU 2

PMU 3, 4

TCU 7, 6

FMU 14, 15

GATM 22

TCU (dedicated for the BBC) 23, 24, 25, 26

The following table provides the configuration rules of upgrading the monitoring boards froma 8.x version to the 9.0 version.




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Table 10-32 Configuration rules for upgrading the monitoring boards

Monitoring Board Description Remarks

DEMU l If only one DEMU isused, the cabinet number,subrack number, and slotnumber of the DEMU arechanged into 0, 40, and 0respectively. If twoDEMUs are used, thecabinet number, subracknumber, and slot numberof the other DEMU arechanged into 0, 41, and 0respectively.

l The DEMU is renamedEMU.

l You need to modify theparameters of the EMUand add the informationabout the managementobjects.

One BTS has at most twoDEMUs.

GATM l If only one GATM isused, the cabinet number,subrack number, and slotnumber of the GATM arechanged into 0, 50, and 0respectively. If twoGATMs are used, thecabinet number, subracknumber, and slot numberof the other GATM arechanged into 0, 51, and 0respectively.

l You need to modify theparameters of the GATMand add the relationinformation of themanagement object.

One BTS has at most twoGATMs.



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Local DPMU/APMU l If only one DPMU/APMU is used, thecabinet number, subracknumber, and slot numberof the DPMU/APMU arechanged into 0, 7, and 0respectively.

l If two DPMUs/APMUsare used, the cabinetnumber, subrack number,and slot number of theodd-numbered DPMU/APMU are changed into0, 7, and 0 respectively.The other DPMU/APMUis upgraded as follows:– If the BTS model is

BTS3900 and the typeof cabinet 1 isBTS3900, then thecabinet number,subrack number, andslot number of theother DPMU/APMUare changed into 1, 7,and 0 respectively.

– If the BTS model isBTS3900 and cabinet1 does not exist, thenadd cabinet 5, andchange the cabinetnumber, subracknumber, and slotnumber of the otherDPMU/APMU into 5,7, and 0 respectively.Regarding the addednumber five cabinet, ifthe other DPMU/APMU is DPMU, thenthe cabinet type isPS4890; if the otherDPMU/APMU isAPM30, then thecabinet type isAPM30; if the otherDPMU/APMU isAPM4815, then thecabinet type is OMB.

l You can determinewhether a DPMU/APMUis a local one according toits original cabinetnumber, subrack number,and slot number. If theoriginal subrack numberis 2, the DPMU/APMU isa local one. If the originalsubrack number is 5, theDPMU/APMU is aremote one.

l If there is a DPMU/APMU in cabinet 0,subrack 2, and slot 4 or incabinet 0, subrack 2, andslot 5, you need to removeit first.

l After the DPMU isrenamed, you need to setAPMUBRDTYPE toPS4890.




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l The DPMU/APMU isrenamed PMU.

l You need to modify theparameters of the PMUand add the relationinformation of themanagement object.

The following is an example: View the settings of the PMU and determine how many PSUs areconfigured. Assume that three PSUs are configured in PMU0 by running the followingcommand: SET BTSAPMUBP: IDTYPE=BYID, BTSID=1000, CN=0, SRN=7, SN=0,CFGFLAG=YES, APMUBRDTYPE=APM30, PSU0=YES, PSU1=YES, PSU2=YES. Afterthe PMU0 is added, three PSUs are added. In the 9.0 version, the PSU is treated as a board, andtherefore you need to add a PSU in the same way as adding a board. The MML command foradding a PSU is as follows:

ADD BTSBRD: IDTYPE=BYID, BTSID=1000, CN=0, SRN=7, SN=1, BT=PSU. In thiscommand, the CN and SRN are the same as those of the PMU0, and the SN is numbered from1 in ascending order.

10.3.13 Configuration Guidelines for Typical TRX PowerThe typical TRX power specifications are only used as reference for onsite configurations.Specific data configurations should be adjusted according to onsite situations.

This task takes the typical TRX power configurations of the RRU3908 and MRFU as examples.For details about the typical TRX power configurations of other models, see the ProductDescription of the corresponding base station model.

For details about the typical TRX power configuration, see the 3900 Series Multi-Mode BaseStation Typical TRX Power.

10.4 Data Configuration Guidelines for SpecificationsThis document provides the specifications of the BSC6900.

Table 10-33 lists the specifications of the BSC6900.

Table 10-33 BSC6900 specifications

Item Specification

Maximum Number of TRXs 3072

Maximum Number of GSM Cells 2048

Maximum Number of External Neighboring GSM Cells 3000

Maximum Number of External Neighboring UMTS Cells 3000



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Item Specification

Number of SS7 Links 64

Number of 2 Mbit/s SS7 Links 32

Maximum Number of Internal Neighboring GSM CellsSupported by a GSM Cell 64

Maximum Number of External Neighboring GSM CellsSupported by a GSM Cell 64

Maximum Number of External Neighboring UMTS CellsSupported by a GSM Cell 64

Number of OSPs Supported by a BSC 4

Number of DSPs 183

Maximum Number of MTP3 (MTP3&MTP3b) Link Sets 183

Maximum Number of MTP (MTP3&MTP3b) LinksSupported by an MTP Link Set 16

Maximum Number of MTP Links 2928

Maximum Number of MTP3 Links Supported by a CPUS 50

Maximum Number of MTP Routes 366

Maximum Number of M3UA Links Supported by a GSMCPUS 15

Maximum Number of M3UA Link Sets 183

Maximum Number of GSM M3UA Links 1024

Maximum Number of M3UA Destination Entities 183

Maximum Number of M3UA Local Entities 183

Number of M3UA Routes 366

Maximum Number of STPs 32

Maximum Number of AAL2 Paths 13000

Maximum Number of IP Paths 13000

Maximum Number of AAL2 Paths and IP Paths 13000

Maximum Number of Signaling Links over Ater Interface 64

Maximum Number of OM Links over Ater Interface 2

Maximum Number of Signaling Links over Ater InterfaceSupported by a TC 64

Maximum Number of Signaling Links over Pb Interface 256




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Item Specification

Total Number of Routes 4096

Number of Routes on FG2c/GOUc 512

10.5 Data Configuration Principles for NumberingThis section describes the numbering rules and reference information related to the BSC6900.

10.5.1 BSC6900 Subrack NumberThis section describes the principles of and suggestions for numbering BSC6900 subracks.

10.5.2 Transmission Resource Mapping Record IndexThis section describes the principles of and suggestions for numbering transmission resourcemapping records.

10.5.3 Activity Factor Table IndexThis section describes the principle of numbering activity factor tables.

10.5.4 SCTP Link NumberThis section describes the principles of and suggestions for numbering SCTP links.

10.5.5 Adjacent Node IDThis section describes the principles of and suggestions for numbering adjacent nodes.

10.5.6 MTP3/M3UA DSP IndexThis section describes the principles of and suggestions for numbering MTP3/M3UADestination Signaling Points (DSPs).

10.5.7 Signaling Link Set IndexThis section describes the principles of and suggestions for numbering signaling link sets. Thesignaling link set can be the MTP3 signaling link set or the M3UA signaling link set.

10.5.8 MSC IDThis section describes the principles of and suggestions for numbering MSCs.

10.5.9 Logical Cell IDThis section describes the principles of and suggestions for numbering logical cells.

10.5.10 GSM Cell IDThis section describes the principles of numbering GSM cells.

10.5.11 NRIThis section describes the principles of setting Network Resource Identifiers (NRIs).

10.5.12 PLMN IDThis section defines the PLMN and describes the components of the PLMN ID.

10.5.13 LA IdentifiersThis section describes the principles of and suggestions for numbering Location Areas (LAs).The identifiers related to the LA are Location Area Code (LAC) and Location Area Identification(LAI).

10.5.14 RA Identifiers



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This section describes the principles of and suggestions for numbering Routing Areas (RAs).The identifiers related to the RA are Routing Area Code (RAC) and Routing Area Identification(RAI).

10.5.15 PLMN Value TagThis section defines the PLMN value tag and describes the principles of numbering PLMN valuetags.

10.5.1 BSC6900 Subrack NumberThis section describes the principles of and suggestions for numbering BSC6900 subracks.

PrinciplesA cabinet of the BSC6900 has two types of subrack: MPS and EPS. If the BSC6900 is deployedin a GSM network, the TCS may exist. In this case, the MPS and EPS are collectively knownas the Basic Module (BM) subrack, and the TCS is short for the TransCoder (TC) subrack.ABSC6900 supports a maximum of 8 subracks. Each subrack is uniquely but not necessarilyconsecutively numbered within a BSC6900.

l The mandatory MPS is the switching subrack whose number is always set to 0.l The EPS is the service processing subrack whose number ranges from 1 to 3. The number

of required EPSs depends on the traffic requirement.l The TCS is the speech service processing subrack whose number ranges from 4 to 7. The

number of required TCSs depends on the traffic requirement.

SuggestionsIt is recommended that subracks be numbered in ascending order in the directions from left toright and from bottom to top, seen from the front.

10.5.2 Transmission Resource Mapping Record IndexThis section describes the principles of and suggestions for numbering transmission resourcemapping records.

PrinciplesA BSC6900 supports a maximum of 150 transmission resource mapping records. The numbersof such records range from 14 to 163.

NOTEBy default, 14 transmission resource mapping records (indexed from 0 to 13) are added. You cannot modifyor remove them.

10.5.3 Activity Factor Table IndexThis section describes the principle of numbering activity factor tables.

PrinciplesA BSC6900 supports a maximum of 34 activity factor tables. The numbers of such tables rangefrom 0 to 33.




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NOTEThe activity factor table with index 0 is the default table in the BSC6900, and you cannot modify or removeit.

10.5.4 SCTP Link NumberThis section describes the principles of and suggestions for numbering SCTP links.

Principles

The numbers of SCTP links range from 0 to 1199.

SCTP links are uniquely numbered within an XPU board. The numbering for SCTP links of thesame type may not be consecutive. For example, number an SCTP link on one A interface 10and an SCTP link on another A interface 12.

10.5.5 Adjacent Node IDThis section describes the principles of and suggestions for numbering adjacent nodes.

Principles

The numbers of adjacent nodes range from 0 to 4599. Adjacent nodes are uniquely but notnecessarily consecutively numbered within a BSC6900. For example, you can number one Aadjacent node 10 and another A adjacent node 12.

Suggestions

For clear and easy identification, adhere to the following numbering principles:

Number the A, Ater, and Abis adjacent nodes in ascending order starting from 0 or in descendingorder starting from 4599. For example, you can number the A adjacent nodes in ascending orderstarting from 0 and number the Ater and Abis adjacent nodes in descending order starting from4599.

10.5.6 MTP3/M3UA DSP IndexThis section describes the principles of and suggestions for numbering MTP3/M3UADestination Signaling Points (DSPs).

Principles

A BSC6900 supports a maximum of 186 DSPs, including the DSPs that are either directly orindirectly connected to the Originating Signaling Points (OSPs). The number of the MTP3/M3UA DSP ranges from 0 to 186. DSPs are uniquely but not necessarily consecutively numberedwithin a BSC6900 by using the DSP index. For example, you can set the number of an MSCsignaling point to 10 and that of another MSC signaling point to 12.

10.5.7 Signaling Link Set IndexThis section describes the principles of and suggestions for numbering signaling link sets. Thesignaling link set can be the MTP3 signaling link set or the M3UA signaling link set.



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Principles of Numbering MTP3 Signaling Link SetsIn a BSC6900, the number of the MTP3 signaling link set ranges from 0 to 186. MTP3 signalinglink sets are uniquely but not necessarily consecutively numbered within a BSC6900 by usingthe signaling link set index. For example, you can set the number of an MTP3 signaling link settowards a neighboring MGW to 10 and the number of an MTP3 signaling link set towards anotherneighboring MGW to 12.

Principles of Numbering M3UA Signaling Link SetsIn a BSC6900, the numbers of M3UA signaling link sets range from 0 to 186. M3UA signalinglink sets are uniquely but not necessarily consecutively numbered within a BSC6900 by usingthe signaling link set index. For example, you can set the number of an M3UA signaling linkset towards a neighboring MSC to 11 and the number of an M3UA signaling link set towardsanother neighboring MSC to 13.

10.5.8 MSC IDThis section describes the principles of and suggestions for numbering MSCs.

PrinciplesMSCs are uniquely but not necessarily consecutively numbered within a BSC6900. For example,set the number of an MSC to 0 and that of another MSC to 2.

NOTE

Although the number of an MSC ranges from 0 to 4095, a maximum of 64 MSCs can be configured.

SuggestionsFor clear and easy identification, adhere to the following numbering principles:

Specify different ranges for CN nodes in different domains. For example, specify the range of0 to 15 for CN nodes in the CS domain and the range of 16 to 31 for CN nodes in the PS domain.

10.5.9 Logical Cell IDThis section describes the principles of and suggestions for numbering logical cells.

PrinciplesThe logical cell ID uniquely identifies a cell in a radio network.

The logical cell ID is configured at the BSC6900. The BSC6900 sends the cell ID to the basestation during a cell setup procedure. The mapping between logical cell IDs and local cell IDsare configured at the BSC6900.

The BSC6900 supports a maximum of 2048 logical cells. Logical cells are uniquely but notnecessarily consecutively numbered within a BSC6900. For example, you can set the ID of alogical cell to 0 and that of another logical cell to 2.

SuggestionsFor clear and easy identification, adhere to the following numbering principles:




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Specify different number ranges for logical cells in different subracks. For example, you canspecify the range of 0 to 899 for the logical cells in subrack 0 (MPS) and the range of 900 to1799 for the logical cells in subrack 1 (EPS).

10.5.10 GSM Cell IDThis section describes the principles of numbering GSM cells.

A GSM cell ID is used to identify the GSM cell. The BSC6900 supports a maximum of 2048GSM cells.

GSM cells are uniquely but not necessarily consecutively numbered within a BSC6900. Forexample, you can number a GSM cell 0 and number another GSM cell 3.

10.5.11 NRIThis section describes the principles of setting Network Resource Identifiers (NRIs).

An NRI uniquely identifies a CN node that serves a pool area. The value range of NRI is variable.The value range depends on the scale of a CN domain and expansion requirements. Themaximum number of NRIs is 1,024. For example, a CS domain has a maximum of 16 nodes. Inthis case, Length of CS NRI in bits is set to 4, which indicates that an NRI is represented byfour binary digits. Therefore, the value range of NRI is 0 to 15.

10.5.12 PLMN IDThis section defines the PLMN and describes the components of the PLMN ID.

PLMNPublic Land Mobile Networks (PLMNs), which are established and operated by executivebranches or recognized private operators, provide public land mobile radio telecommunicationservices.

PLMN IDs identify mobile communication operators of different countries. PLMNs of differentoperators have different PLMN IDs.

PLMN IDThe PLMN ID is used to uniquely identify a PLMN worldwide.

The PLMN ID consists of two parts: MCC and MNC. Figure 10-13 shows the components ofthe PLMN ID.

Figure 10-13 Components of the PLMN ID

l Mobile Country Code (MCC) is used to identify different countries or regions.



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l Mobile Network Code (MNC) is used to identify different network operators.

10.5.13 LA IdentifiersThis section describes the principles of and suggestions for numbering Location Areas (LAs).The identifiers related to the LA are Location Area Code (LAC) and Location Area Identification(LAI).

LACThe LAC is used to uniquely identify an LA within a PLMN.

The LAC is a 2-byte hexadecimal code. It ranges from 0000 to FFFE. The codes 0000 and FFFEare reserved. The LAC is presented in the format of h'X1X2X3X4 or H'X1X2X3X4. h' and H' arethe hexadecimal symbols.

LAIThe LAI is used to uniquely identify an LA worldwide.

The LAI consists of three parts: MCC, MNC, and LAC. Figure 10-14 shows the componentsof the LAI.

Figure 10-14 Components of the LAI

10.5.14 RA IdentifiersThis section describes the principles of and suggestions for numbering Routing Areas (RAs).The identifiers related to the RA are Routing Area Code (RAC) and Routing Area Identification(RAI).

RACThe RAC is a 1-byte hexadecimal code. It is used to uniquely identify an RA within an LA.

RAIThe RAI is used to uniquely identify an RA worldwide.

The RAI consists of four parts: MCC, MNC, LAC, and RAC. It can also be presented by LAI+ RAC. Figure 10-15 shows the components of the RAI.

Figure 10-15 Components of the RAI




Issue 07 (2010-09-15)

10.5.15 PLMN Value TagThis section defines the PLMN value tag and describes the principles of numbering PLMN valuetags.

The PLMN value tag is contained in the Master Information Block (MIB) and SystemInformation Block 1 (SIB1) as an information element. The PLMN value tag in the MIB changesafter an SIB1 is updated. After the UE detects the change in the PLMN value tag, it automaticallyreads the new SIB1.

When a UE moves between neighboring cells that belong to different LAs or RAs, the UE needsto read the SIB1 of the destination cell to initiate a location update procedure, which requiresthat the two cells have different PLMN value tags.

Therefore, during network planning, different value ranges should be allocated to the PLMNvalue tags of any two geographically neighboring areas (including scenarios where one area ispart of the other area). The two areas can be two LAs, two RAs, or one LA and one RA.

During parameter configuration, the PLMN value tags of different value ranges should beassigned to any neighboring areas after negotiation. There is no intersection between the valueranges. The area can be an LA or RA. The PLMN value tags of LAs or RAs vary within thespecified range. As a result, a UE can always read different PLMN value tags when movingacross the areas and thus correctly reads the SIB1.

NOTE

In practice, if a cell supports PS services, the PLMN value tag of the cell varies within the specified valuerange of the RA to which the cell belongs. If a cell does not support PS services, the PLMN value tag ofthe cell varies within the specified value range of the LA to which the cell belongs.

Figure 10-16 shows an example of planning the value ranges of PLMN value tags.

Figure 10-16 Example of planning the value ranges of PLMN value tags



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BSC6900 Configuration guide

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