BSC Product Descrip!Ion(V900R008C12_04)

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HUAWEI BSC6000 Base Station Controller

V900R008C12

BSC Product Description

Issue 04

Date 2010-05-20

HUAWEI TECHNOLOGIES CO., LTD.


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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 written

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 04 (2010-05-20) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

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About This Document

Purpose

This document describes the structure, components, and working principles of the BSC in termsof hardware, software, and logic. It also describes the transport and networking, signal flows,

and technical specifications of the BSC.

Product Version

The following table lists the product version related to this document.

Product Name Product Model Product Version

BSC BSC6000 V900R008C12

Intended Audience

This document is intended for:

l Network planners

l System engineers

l

Field engineers

Organization

1 Changes in BSC Product Description

This provides the changes of the BSC Product Description.

2 Position of the BSC in the GSM/GPRS Network

In the GSM/GPRS network, the BSC is located between the BTS and the MSC or between the

BTS and the PCU. The BSC performs the following functions: radio resource management, BTSmanagement, power control, and handover control.


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3 Functions of the BSC

The BSC mainly performs the following functions: radio resource management, connection

management, and BTS management.

4 Introduction to the BSC

This describes the physical, logical, and software structures of the BSC.

5 BSC Hardware Configuration

The GBAM and GOMU are the operation and maintenance entities of the BSC. There are two

types of BSC hardware configuration: configuration type A and configuration type B. In

configuration type A, the BSC is configured with the GBAM. In configuration type B, the BSC

is configured with the GOMU. One BSC can use only one configuration type.

6 BSC TDM Switching Subsystem

The Time Division Multiplexing (TDM) switching subsystem performs data exchange in the

circuit switched (CS) domain.

7 BSC GE Switching Subsystem

The Gigabit Ethernet (GE) switching subsystem performs the GE switching and packet switching

of the signaling and OM information in the BSC.

8 BSC Service Processing Subsystem

The BSC service processing subsystem performs voice coding/decoding, rate matching, and PS

service processing.

9 BSC Service Control Subsystem

The BSC service control subsystem performs the following functions: paging control, systeminformation management, channel assignment, BTS public service management, call control,

packet service control, handover and power control, cell broadcast short message service, BTS

OM, and TC resource pool management.

10 BSC Interface Processing Subsystem

The BSC interface and signaling processing subsystem processes the signaling on the BSC

interfaces.

11 BSC Clock Subsystem

The BSC clock subsystem consists of the GGCU and the clock processing unit in each subrack.

The clock subsystem provides the working clock for the BSC and provides the reference clock

for the BTS.

12 BSC Power Subsystem

The BSC power subsystem adopts dual-circuit redundancy and point-by-point monitoring

solution, which is highly reliable. The BSC power subsystem comprises the power lead-in part

and the power distribution part.

13 BSC Environment Monitoring Subsystem

The BSC environment monitoring subsystem comprises the power distribution box and the

environment monitoring parts in each subrack. The environment monitoring subsystem monitors

and adjusts the power supply, the speed of the fans, and the working environment.

14 OM of the BSC

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This describes two OM modes and various OM functions of the BSC.

15 BSC Signal Flow

The BSC signal flow consists of the CS service signal flow, PS service signal flow, signaling

flow, and OM signal flow.

16 BSC Transmission and Networking

This describes various transmission and networking modes between the BSC and other NEs.

17 BSC Technical Specifications

The BSC technical specifications consist of the capacity specifications, engineering

specifications, physical port specifications, reliability specifications, clock precision

specifications, noise and safety compliance, and environment specifications.

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 not

avoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not

avoided,could result in equipment damage, data loss,

performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save

time.

Provides additional information to emphasize or supplement

important 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 in

boldface. For example, log in as userroot.

Italic Book titles are in italics.





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Courier New Examples of information displayed on the screen are in

Courier 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 by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated by

vertical 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.


Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, clickOK.

> 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.

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Format Description

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 moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.





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Contents

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

1 Changes in BSC Product Description....................................................................................1-1

2 Position of the BSC in the GSM/GPRS Network................................................................2-1

3 Functions of the BSC.................................................................................................................3-1

4 Introduction to the BSC............................................................................................................4-1

4.1 BSC Physical Structure...................................................................................................................................4-2

4.2 BSC Software Structure..................................................................................................................................4-5

4.3 BSC Logical Structure.................................................................................................................................... 4-7

5 BSC Hardware Configuration..................................................................................................5-1

5.1 BSC Hardware Configuration.........................................................................................................................5-2

5.2 BSC Hardware Configuration Type A............................................................................................................5-5

5.2.1 BM/TC Separated (Configuration Type A)........................................................................................... 5-55.2.2 BM/TC Combined (Configuration Type A).........................................................................................5-10

5.2.3 A over IP (Configuration Type A).......................................................................................................5-13

5.3 BSC Hardware Configuration Type B..........................................................................................................5-15

5.3.1 BM/TC Separated (Configuration Type B)..........................................................................................5-16

5.3.2 BM/TC Combined (Configuration Type B).........................................................................................5-20

5.3.3 A over IP (Configuration Type B).......................................................................................................5-23

6 BSC TDM Switching Subsystem............................................................................................6-1

6.1 Physical Structure of the BSC TDM Switching Subsystem........................................................................... 6-2

6.2 Logical Structure of the BSC TDM Switching Subsystem.............................................................................6-3

7 BSC GE Switching Subsystem................................................................................................7-1

7.1 Physical Structure of the BSC GE Switching Subsystem...............................................................................7-2

7.2 Logical Structure of the BSC GE Switching Subsystem................................................................................ 7-3

7.3 Features of BSC GE Switching.......................................................................................................................7-4

8 BSC Service Processing Subsystem........................................................................................8-1

8.1 Physical Structure of the BSC Service Processing Subsystem.......................................................................8-2

8.2 Logical Structure of the BSC Service Processing Subsystem.........................................................................8-4

9 BSC Service Control Subsystem.............................................................................................9-1

9.1 Physical Structure of the BSC Service Control Subsystem............................................................................ 9-2


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9.2 Logical Structure of the BSC Service Control Subsystem..............................................................................9-2

10 BSC Interface Processing Subsystem.................................................................................10-1

10.1 Physical Structure of the BSC Interface Processing Subsystem.................................................................10-2

10.2 Logical Structure of the BSC Interface Processing Subsystem..................................................................10-3

11 BSC Clock Subsystem...........................................................................................................11-1

11.1 BSC Clock Sources.....................................................................................................................................11-2

11.2 BSC Clock Synchronization........................................................................................................................11-2

11.2.1 BSC Clock Synchronization (BM/TC Separated)..............................................................................11-3

11.2.2 BSC Clock Synchronization (BM/TC Combined).............................................................................11-5

11.2.3 BSC Clock Synchronization (A over IP)...........................................................................................11-6

12 BSC Power Subsystem..........................................................................................................12-1

13 BSC Environment Monitoring Subsystem........................................................................13-1

13.1 BSC PowerMonitoring...............................................................................................................................13-2

13.2 BSC Fan Monitoring...................................................................................................................................13-2

13.3 BSC Environment Monitoring....................................................................................................................13-3

14 OM of the BSC........................................................................................................................14-1

14.1 OM Modes of the BSC................................................................................................................................14-2

14.2 OM Functions of the BSC...........................................................................................................................14-3

14.2.1 BSC Security Management................................................................................................................14-4

14.2.2 BSC Configuration Management.......................................................................................................14-6

14.2.3 BSC Performance Management.......................................................................................................14-10

14.2.4 BSC Alarm Management.................................................................................................................14-11

14.2.5 BSC Loading Management..............................................................................................................14-13

14.2.6 BSC Upgrade Management..............................................................................................................14-16

14.2.7 BTS Loading Management..............................................................................................................14-16

14.2.8 BTS Upgrade Management..............................................................................................................14-17

15 BSC Signal Flow.....................................................................................................................15-1

15.1 BSC CS Signal Flow...................................................................................................................................15-2

15.2 BSC PS Signal Flow...................................................................................................................................15-6

15.3 BSC Signaling Flow....................................................................................................................................15-8

15.3.1 Signaling Flow on the Abis Interface.................................................................................................15-8

15.3.2 Signaling Flow on the A Interface...................................................................................................15-11

15.3.3 Signaling flow on the Pb interface...................................................................................................15-14

15.3.4 Signaling Flow on the Gb Interface.................................................................................................15-15

15.4 BSC OM Signal Flow...............................................................................................................................15-16

15.4.1 BSC OM Signal Flow (BM/TC Separated)......................................................................................15-16

15.4.2 BSC OM Signal Flow (BM/TC Combined).....................................................................................15-19

15.4.3 BSC OM Signal Flow (A over IP)...................................................................................................15-19

16 BSC Transmission and Networking...................................................................................16-1

16.1 Transmission and Networking on the Abis Interface..................................................................................16-2

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16.2 Transmission and Networking on the A Interface.......................................................................................16-5

16.3 Transmission and Networking on the Pb Interface.....................................................................................16-8

16.4 Transmission and Networking on the Ater Interface..................................................................................16-9

16.5 Transmission and Networking on the Gb Interface...................................................................................16-10

17 BSC Technical Specifications..............................................................................................17-1

17.1 BSC Capacity Specifications......................................................................................................................17-2

17.2 BSC Engineering Specifications.................................................................................................................17-2

17.3 BSC Physical Interfaces..............................................................................................................................17-4

17.4 BSC Reliability Specifications....................................................................................................................17-8

17.5 BSC Clock Precision Requirements............................................................................................................17-8

17.6 BSC Noise and Safety Compliance.............................................................................................................17-9

17.7 BSC Environment Requirements................................................................................................................17-9

17.7.1 BSC Storage Requirements..............................................................................................................17-10

17.7.2 BSC Transportation Requirements...................................................................................................17-12

17.7.3 BSC Operating Environment Requirements....................................................................................17-15

17.8 Technical Specifications of BSC Parts......................................................................................................17-17

17.8.1 Technical Specifications of the GBAM...........................................................................................17-18

17.8.2 Technical Specifications of the GOMU...........................................................................................17-19

17.8.3 Technical Specifications of the BSC Common Power Distribution Box.........................................17-20

17.8.4 Technical Specifications of the BSC High-Power Distribution Box...............................................17-21


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Figures

Figure 2-1 Position of the BSC in the GSM/GPRS network...............................................................................2-2

Figure 4-1 Physical structure of the BSC.............................................................................................................4-2

Figure 4-2 Front view of the BSC cabinet...........................................................................................................4-4

Figure 4-3 Structure of the host software.............................................................................................................4-5

Figure 4-4 Structure of the OMU software..........................................................................................................4-6

Figure 4-5 Structure of LMT software.................................................................................................................4-6

Figure 4-6 Logical structure of the BSC..............................................................................................................4-7

Figure 5-1 OM path between the GMPS and the main GTCS (in local GTCS mode)........................................5-3

Figure 5-2 OM path between the GMPS and the main GTCS (in remote GTCS mode).....................................5-3

Figure 5-3 BSC minimum configuration (GTCS configured on the BSC side)..................................................5-6

Figure 5-4 BSC minimum configuration (GTCS configured on the MSC side)..................................................5-6

Figure 5-5 BSC maximum configuration (GTCS configured on the BSC side)..................................................5-7

Figure 5-6 BSC maximum configuration (GTCS configured on the MSC side).................................................5-7

Figure 5-7 BSC maximum configuration (GTCS configured on the BSC side)..................................................5-8Figure 5-8 BSC maximum configuration (GTCS configured on the MSC side).................................................5-8

Figure 5-9 BSC minimum configuration............................................................................................................5-11

Figure 5-10 BSC maximum configuration (E1/T1 transmission used on the A interface)................................5-12

Figure 5-11 BSC maximum configuration (STM-1 transmission used on the A interface)..............................5-12

Figure 5-12 BSC minimum configuration..........................................................................................................5-14

Figure 5-13 BSC maximum configuration.........................................................................................................5-14

Figure 5-14 BSC minimum configuration (GTCS configured locally).............................................................5-16

Figure 5-15 BSC minimum configuration (GTCS configured remotely)..........................................................5-16

Figure 5-16 BSC maximum configuration (GTCS configured locally).............................................................5-17

Figure 5-17 BSC maximum configuration (GTCS configured remotely)..........................................................5-17

Figure 5-18 BSC maximum configuration (GTCS configured locally).............................................................5-18

Figure 5-19 BSC maximum configuration (GTCS configured remotely)..........................................................5-18


Figure 5-21 BSC maximum configuration (E1/T1 transmission used on the A interface)................................5-21

Figure 5-22 BSC maximum configuration (STM-1 transmission used on the A interface)..............................5-22


Figure 5-24 BSC maximum configuration.........................................................................................................5-24

Figure 6-1 TDM interconnections between GMPS and GEPS............................................................................6-2

Figure 6-2 TDM interconnections between GTCSs.............................................................................................6-2


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Figure 6-3 Intra-subrack TDM interconnections..................................................................................................6-3

Figure 6-4 Logical structure of the BSC TDM switching subsystem..................................................................6-4

Figure 7-1 GE interconnection between the GMPS and the GEPS......................................................................7-2

Figure 7-2 GE interconnection between the GTCSs............................................................................................7-2

Figure 7-3 Intra-subrack GE interconnection.......................................................................................................7-3

Figure 7-4 Logical structure of the BSC GE switching subsystem......................................................................7-4

Figure 8-1 Physical structure of the BSC service processing subsystem (1).......................................................8-2




Figure 8-5 Logical structure of the CS service processing subsystem.................................................................8-5

Figure 8-6 Logical structure of the PS service processing subsystem.................................................................8-5

Figure 10-1 Physical structure of the BSC interface processing subsystem......................................................10-2

Figure 10-2 BSC interfaces................................................................................................................................10-3

Figure 11-1 Clock synchronization in the GMPS/GEPS (BITS clock source)..................................................11-3

Figure 11-2 Clock synchronization in the GMPS/GEPS (line clock source).....................................................11-4

Figure 11-3 Clock synchronization in the GTCS...............................................................................................11-4

Figure 11-4 BSC clock synchronization procedure (BITS clock source)..........................................................11-5

Figure 11-5 BSC clock synchronization procedure (line clock source).............................................................11-6

Figure 11-6 BSC clock synchronization procedure (BITS clock source)..........................................................11-6

Figure 12-1 Power lead-in part (common power distribution box)....................................................................12-1

Figure 12-2 Power lead-in part (high-power distribution box)..........................................................................12-2

Figure 13-1 Principle of power monitoring........................................................................................................13-2Figure 13-2 Principle of fan monitoring.............................................................................................................13-3

Figure 13-3 Principle of environment monitoring............................................................................................. 13-3

Figure 14-1 Network topology of the BSC OM (in BSC hardware configuration type A)............................... 14-2

Figure 14-2 Network topology of the BSC OM (in BSC hardware configuration type B)................................14-3

Figure 14-3 Principle of the offline data configuration......................................................................................14-7

Figure 14-4 Principle of the online data configuration...................................................................................... 14-7

Figure 14-5 Procedure of the BSC data consistency check................................................................................14-9

Figure 14-6 BSC data synchronization procedure ...........................................................................................14-10

Figure 14-7 BSC performance management process.......................................................................................14-11

Figure 14-8 Alarm management process of the BSC.......................................................................................14-12

Figure 14-9Working principle of the alarm box .............................................................................................14-13

Figure 14-10BSC loading process (1).............................................................................................................14-14



Figure 15-1 CS signal flow (1)...........................................................................................................................15-2





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Figure 15-7 PS signal flow (Abis over TDM)....................................................................................................15-6

Figure 15-8 PS signal flow (Abis over IP).........................................................................................................15-7

Figure 15-9 BSC PS signal flow (external PCU )..............................................................................................15-7

Figure 15-10 Protocol stack on the Abis interface (Abis over TDM)................................................................15-8

Figure 15-11Signaling Flow on the Abis Interface (Abis over TDM)..............................................................15-9

Figure 15-12Protocol stack on the Abis interface (Abis over HDLC)..............................................................15-9

Figure 15-13Signaling Flow on the Abis Interface (Abis over HDLC)..........................................................15-10

Figure 15-14Protocol stack on the Abis interface (Abis over IP)...................................................................15-10

Figure 15-15Signaling Flow on the Abis Interface (Abis over IP).................................................................15-11

Figure 15-16Protocol stack on the A interface (A over TDM).......................................................................15-12

Figure 15-17Signaling flow on the A interface (A over TDM) (BM/TC separated)......................................15-12

Figure 15-18Signaling flow on the A interface (A over TDM) (BM/TC combined).....................................15-13

Figure 15-19Protocol stack on the A interface (A over IP).............................................................................15-13

Figure 15-20Signaling flow on the A interface (A over IP)............................................................................15-14

Figure 15-21Protocol stack on the Pb interface..............................................................................................15-14

Figure 15-22Signaling flow on the Pb interface.............................................................................................15-15

Figure 15-23Protocol stack on the Gb interface..............................................................................................15-15

Figure 15-24Signaling flow on the Gb interface.............................................................................................15-16

Figure 15-25OM signal flow (GTCS configured on the BSC side)................................................................15-17

Figure 15-26OM signal flow (GTCS configured on the MSC side)...............................................................15-18

Figure 15-27BSC OM signal flow (BM/TC combined).................................................................................15-19

Figure 15-28BSC OM signal flow (A over IP)...............................................................................................15-20Figure 16-1 E1/T1-based TDM networking on the Abis interface....................................................................16-2

Figure 16-2 STM-1-based TDM networking on the Abis interface...................................................................16-2

Figure 16-3 E1/T1-based HDLC networking on the Abis interface..................................................................16-3

Figure 16-4 Hybrid networking (Abis over TDM and Abis over HDLC).........................................................16-4

Figure 16-5MSTP-based IP networking on the Abis interface.........................................................................16-4

Figure 16-6 Data-network-based IP networking on the Abis interface..............................................................16-5

Figure 16-7 E1/T1-based TDM networking on the A interface (1)...................................................................16-6

Figure 16-8 E1/T1-based TDM networking on the A interface (2)...................................................................16-6

Figure 16-9 STM-1-based TDM networking on the A interface (1)..................................................................16-6

Figure 16-10STM-1-based TDM networking on the A interface (2)................................................................16-7

Figure 16-11IP networking on the A interface (1)............................................................................................16-7

Figure 16-12IP networking on the A interface (2)............................................................................................16-8

Figure 16-13E1/T1-based TDM networking on the Pb interface......................................................................16-8

Figure 16-14STM-1-based TDM networking on the Pb interface....................................................................16-8

Figure 16-15E1/T1-based networking on the Ater interface (GTCS configured on the BSC side)..................16-9

Figure 16-16E1/T1-based networking on the Ater interface (GTCS configured on the MSC side).................16-9

Figure 16-17STM-1-based networking on the Ater interface (GTCS configured on the MSC side)...............16-9

Figure 16-18E1/T1-based FR networking on the Gb interface.......................................................................16-10

Figure 16-19FE/GE-based IP networking on the Gb interface.......................................................................16-11


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Tables

Table 2-1 Functions of each NE in the GSM/GPRS network..............................................................................2-2

Table 4-1 Components of the BSC.......................................................................................................................4-2

Table 4-2 Components in the BSC Cabinet..........................................................................................................4-4

Table 5-1 Recommended configuration of the BSC............................................................................................5-9

Table 5-2 Recommended configuration of the BSC..........................................................................................5-13





Table 10-1 Physical entities of the BSC interface processing subsystem..........................................................10-2

Table 14-1 Definitions of the BSC user authorities...........................................................................................14-4

Table 14-2 BSC logs...........................................................................................................................................14-5

Table 17-1 Capacity specification of the BSC...................................................................................................17-2

Table 17-2 Structural specifications...................................................................................................................17-3Table 17-3 Power consumption specifications...................................................................................................17-3

Table 17-4 Power supply and EMC specifications of the BSC..........................................................................17-3

Table 17-5 Specifications of the external transmission interfaces of the BSC...................................................17-4

Table 17-6 Specifications of the internal transmission interfaces of the BSC...................................................17-7

Table 17-7 Specifications of the clock interfaces of the BSC............................................................................17-8

Table 17-8 Reliability specifications of the BSC...............................................................................................17-8

Table 17-9 Clock specifications of the BSC......................................................................................................17-9

Table 17-10 Specifications of the noise and safety compliance of the BSC .....................................................17-9

Table 17-11Climatic requirements (storage)...................................................................................................17-10

Table 17-12Requirements for physically active materials (storage)...............................................................17-11

Table 17-13Requirements for chemically active materials (storage)..............................................................17-11

Table 17-14Mechanical stress requirements (storage)....................................................................................17-12

Table 17-15Requirements for the climate (transportation).............................................................................17-13

Table 17-16Requirements for physically active materials (transportation)....................................................17-14

Table 17-17Requirements for chemically active materials (transportation)...................................................17-14

Table 17-18 Requirements for the mechanical stress (transportation).............................................................17-14

Table 17-19 Temperature and humidity requirements.....................................................................................17-15

Table 17-20 Other requirements.......................................................................................................................17-15

Table 17-21 Requirements for physically active materials (operating)............................................................17-16


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Table 17-22 Requirements for chemically active materials (operating)..........................................................17-16

Table 17-23 Mechanical Stress Requirements.................................................................................................17-17

Table 17-24 Hardware configuration specifications of the GBAM (IBM X3650T)........................................17-18

Table 17-25 Hardware configuration specifications of the GBAM (Huawei C5210)......................................17-18

Table 17-26 Hardware configuration specifications of the GBAM (HP CC3310)..........................................17-19

Table 17-27 Performance specifications of the GBAM...................................................................................17-19

Table 17-28 Hardware configuration specifications of the GOMU.................................................................17-19

Table 17-29 Performance specifications of the GOMU...................................................................................17-20

Table 17-30 Technical specifications of the BSC power distribution box.......................................................17-21

Table 17-31 Technical specifications of the BSC high-power distribution box..............................................17-21

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1 Changes in BSC Product DescriptionThis provides the changes of the BSC Product Description.

V900R008C12 04(2010-05-20)

This is the fourth commercial release.

Compared with issue 03(2009-07-20) of V900R008C12 ,no information is added, modified or

removed.

V900R008C12 03(2009-07-20)

This is the third commercial release.

Compared with issue 02(2009-05-30) of V900R008C12 ,no information is added, modified orremoved.

V900R008C12 02(2009-05-30)

This is the second commercial release.

Compared with issue 01(2009-02-16) of V900R008C12, no information is added.

Compared with issue 01(2009-02-16) of V900R008C12, the following information is modified:

Item Change Description

17.4 BSC Reliability Specifications System availability in typical configuration.

Compared with issue 01(2009-02-16) of V900R008C12, no information is removed.

V900R008C12 01(2009-02-16)

This is the initial commercial release.

Compared with issue 02(2009-06-30) of V900R008C01, the following information is added:

l Remote Upgrade Management


BSC Product Description 1 Changes in BSC Product Description



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l 3 Functions of the BSC

Compared with issue 02(2009-06-30) of V900R008C01, the following information is modified:

Item Change Description

16.1 Transmission and Networking on the

Abis Interface

The VLAN technology adopted over the Abis

interface in Abis over IP networking mode is

described.

4.2 BSC Software Structure The compatibility between the Windows

Vista operating system and the LMT is

described.

8.2 Logical Structure of the BSC Service

Processing Subsystem

The description of CS Service Processing

Subsystem and PS Service Processing

Subsystem are modified.

15.1 BSC CS Signal Flow The description of the BSC CS Signal Flowis modified when Abis over HDLC/IP+A

over TDM,Abis over TDM+A over IP and

Abis over HDLC/IP+A over IP.

14.2.7 BTS Loading Management BTS Loading Management is changed.

15.3.1 Signaling Flow on the Abis Interface The description of the hybrid networking of

Abis over TDM and Abis over HDLC is

added.

16.2 Transmission and Networking on the

A Interface

The description of the VLAN technology

adopted over the A interface in A over IP

networking mode is added.

14.2.1 BSC Security Management The description of guest, a new internal user,

is added in the authority management section.

The description of new log types is added in

the log management section.

Compared with issue 02(2009-06-30) of V900R008C01, no information is removed.

1 Changes in BSC Product Description



1-2 Huawei Proprietary and Confidential


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2 Position of the BSC in the GSM/GPRSNetwork

In the GSM/GPRS network, the BSC is located between the BTS and the MSC or between the

BTS and the PCU. The BSC performs the following functions: radio resource management, BTS

management, power control, and handover control.

Position of the BSC in the GSM/GPRS Network

Figure 2-1 shows the position of the BSC in the GSM/GPRS network.


BSC Product Description 2 Position of the BSC in the GSM/GPRS Network



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Figure 2-1 Position of the BSC in the GSM/GPRS network

BSC

BTS

PCU

SGSN

MSC/VLR

AUC/HLR

ISDN/PSTN...

BTS

BTS: base transceiver station BSC: base station

controller

PCU: packet control unit SGSN: serving GPRS

support node

AUC: authentication center HLR: home location

register

MSC: mobile service

switching center

VLR: visitor location

register

ISDN: integrated services

digital network

PSTN: public switched

telephone network

NOTE

As shown in Figure 2-1, the PCU is fully controlled by the BSC. In this case, the BSC is directly connected

to the SGSN.

Functions of each NE in the GSM/GPRS Network

Table 2-1 describes the functions of each NE in the GSM/GPRS network.

Table 2-1 Functions of each NE in the GSM/GPRS network

NE Description of Functions

BTS The BTS performs the following functions: power control, handover

control, transmission and reception of radio signals, coding/decoding

of the signals on the Um interface, and encryption/decryption of the

signals on the Um interface.

2 Position of the BSC in the GSM/GPRS Network





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NE Description of Functions

BSC The BSC performs the following functions: radio resource

management, connection management, and BTS management.

PCU The PCU performs the following functions: packet radio resourcemanagement, packet call control, transmission of data packet on the

Pb and Gb interfaces.

SGSN The SGSN performs the following functions: data packet

transmission, network congestion detection, network status detection,

and network management.

MSC The MSC performs the following functions: call control, route

selection, radio resource allocation, mobility management, location

registration, handover control, bill statistics and collection, and

service coordination between the mobile switching network and the

PSTN.

VLR The VLR stores the temporary information about the MSs.

AUC The AUC stores the information about the private keys of MSs, and

authenticates the validity of the MSs.

HLR The HLR is a database used for managing MSs. It stores the following

information: MS subscription information, location of each MS,

MSISDN, and IMSI.


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3 Functions of the BSCThe BSC mainly performs the following functions: radio resource management, connection

management, and BTS management.

Radio Resource Management

Radio resource management (RRM) is the procedure through which a stable connection is

established between the MS and the MSC for a call. This procedure is also used to release the

radio resources when a call is disconnected. RRM involves the following aspects: paging,

assignment, initial access and immediate assignment, authentication and encryption, system

information transmission, handover, radio channel management, power control, circuit

management, TRX management, media access control, and radio link control.

Connection ManagementThe purpose of connection management is to provide service control and management.

Connection management involves the following aspects: call management, short message

management, voice coding/decoding and rate matching, and packet data forwarding and

processing.

BTS Management

BTS management involves the following aspects: BTS software downloading, BTS data

configuration, BTS status management, and BTS alarm query.


BSC Product Description 3 Functions of the BSC



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4 Introduction to the BSCAbout This Chapter

This describes the physical, logical, and software structures of the BSC.

4.1 BSC Physical Structure

This describes the physical structure of the BSC, including the cabinet, cables, LMT computers,

and alarm box.

4.2 BSC Software Structure

The software of the BSC has a distributed architecture. It is classified into the host software,

OMU software, and LMT software.

4.3 BSC Logical Structure

Logically, the BSC system consists of the time division multiplexing (TDM) switching

subsystem, Gigabit Ethernet (GE) switching subsystem, service processing subsystem, service

control subsystem, interface processing subsystem, clock subsystem, power subsystem, and

environment monitoring subsystem.


BSC Product Description 4 Introduction to the BSC



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4.1 BSC Physical Structure

This describes the physical structure of the BSC, including the cabinet, cables, LMT computers,and alarm box.

Physical Structure of the BSC

Figure 4-1 shows the physical structure of the BSC.

Figure 4-1 Physical structure of the BSC

OM equipment room

LMT

LMT

Alarm box

Serial port

cable

Ethernet

cable

Ethernetcable

GBCR GBSR GBSR

Equipment room

Optical cable to other NEs

Trunk cable to other NEs

PGND cable to the PDF

Ethernet cable to other NEs

Power cable to the PDF

LMT: Local Maintenance Terminal PDF: Power Distribution Frame

Table 4-1 lists the components of the BSC.

Table 4-1 Components of the BSC

Component Description Refer to...GBCR The GBCR provides switching

and processes services for the

BSC. One GBCR is configured

in a BSC.

GBCR (Configuration Type A)

and GBCR (Configuration Type

B)

GBSR The GBSR processes various

services for the BSC. The

number of GBSRs to be

configured depends on the

traffic volume. Zero to three

GBSRs can be configured.

GBSR Cabinet






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Component Description Refer to...

BSC Cables BSC cables are classified into

the Ethernet cable, optical cable,

and trunk cable. The number of

BSC cables to be configured

depends on actual requirements.

BSC Cables

BSC LMT The LMT is a computer that is

installed with the LMT software

package and is connected to the

OM network of the NEs. It is

mandatory for the BSC.

LMT-Related Definitions

Alarm box The alarm box can generate

audible and visual alarms. It is

optional for the BSC.

User manual delivered with the

alarm box

Components of the BSC Cabinet

Figure 4-2 shows the front view of the BSC cabinet.





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Figure 4-2 Front view of the BSC cabinet

Table 4-2 describes the components in the BSC cabinet.

Table 4-2 Components in the BSC Cabinet

BSCSubrack

Description Refer to...

GMPS The GMPS is configured in the GBCR.

Each BSC must be configured with

one GMPS.

Configuration of the GMPS

(Configuration Type A) and

Configuration of the GMPS

(Configuration Type B)






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BSCSubrack

Description Refer to...

GEPS The GEPS is configured in the GBCR

or GBSR. The BSC can be configured

with zero to three GEPSs.

Configuration of the GEPS

GTCS The GTCS is configured in the GBCR

or GBSR. The BSC can be configured

with zero to four GTCSs.

Configuration of the GTCS

Power

distributio

n box

Each cabinet must be configured with

one power distribution box.

l BSC Common Power Distribution

Box

l BSC High-Power Distribution Box

GIMS A set of the KVM, GBAM, and LAN

switch is referred to as the GSM

Integrated Management System(GIMS). The GIMS is configured in

subrack 0 of the GBCR.

If the BSC adopts Configuration

Type A, the GIMS is mandatory.

Otherwise, the GIMS is not required.

l KVM

l

LAN Switchl GBAM

4.2 BSC Software Structure

The software of the BSC has a distributed architecture. It is classified into the host software,

OMU software, and LMT software.

Host Software

The host software runs on various service boards. It consists of the operating system, middleware,

and application software. Figure 4-3 shows the structure of the host software.

Figure 4-3 Structure of the host software

Operating system

Middleware

Application software

l Operating system

The operating system adopted in the BSC is VxWorks, which is an embedded real-time

operating system.

l Middleware





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The Distributed Object-oriented Programmable Realtime Architecture (DOPRA) and

Platform of Advanced Radio Controller (PARC) middleware ensure that the upper-level

application software is independent of the lower-level operating system. The middleware

enables software functions to be transplanted between different platforms.

l

Application softwareDifferent boards are configured with different types of application software. The

application software is classified into radio resource processing software, resource control

plane processing software, BTS management software, and configuration management and

maintenance software.

OMU Software

The operation maintenance unit (OMU) software runs on the GBAM server or on the GOMU

to perform the operation and maintenance of the BSC. Figure 4-4 shows the structure of the

OMU software.

Figure 4-4 Structure of the OMU software

OMU software

Middleware

Operating system

l Operating system

The OMU software runs on the Linux operating system.

l Middleware

The DOPRA middleware ensures that the upper-level application software is independent

of the lower-level operating system. Thus, the middleware enables software functions to

be transplanted between different platforms.

l Application software

The application software performs the functions of different logical entities in the GBAM/

GOMU.

LMT Software

The LMT software, which consists of the operating system and application software, runs on

the LMT computer. Figure 4-5 shows the structure of the LMT software.

Figure 4-5 Structure of LMT software

Operating system

Application software






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l Operating system

The LMT runs on the Windows 2000 Professional,Windows XP Professional or Windows

Vista Professional operating system.

l Application software

The application software provides access to the operation and maintenance of the BSC.

The software package consists of the BSC6000 Local Maintenance Terminal, BSC6000

Online Help, LMT Service Manager, Local Maintenance Terminal, Performance Browser

tool, and Convert Management System.

NOTE

The BSC6000 Local Maintenance Terminal provides a graphic user interface (GUI) for performing

operation and maintenance. The Local Maintenance Terminal is also called the MML client, which

provides MML commands for the users. Both of them support the maintenance and data configuration

of the BSC and the BTSs connected to the BSC.

4.3 BSC Logical Structure

Logically, the BSC system consists of the time division multiplexing (TDM) switching

subsystem, Gigabit Ethernet (GE) switching subsystem, service processing subsystem, service

control subsystem, interface processing subsystem, clock subsystem, power subsystem, and

environment monitoring subsystem.

Figure 4-6 shows the logical structure of the BSC.

Figure 4-6 Logical structure of the BSC

Service

processing

subsystem

Service

control

subsystem

Interface

processing

subsystem

Environment

monitoring

subsystem

GBAM/GOMU

LMT/M2000

To BTS

To PCU/SGSN

To MSC/MGW

TDM

switching

subsystem

GE

switching

subsystem

Clock

subsystem

Power

subsystem

The interface processing subsystem of the BSC provides the Pb or Gb interface, depending on

the types of PCU.

l

When the built-in PCU is used, the interface processing subsystem provides the Gb interfaceto enable the communication between the BSC and the SGSN.





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l When the external PCU is used, the interface processing subsystem provides the Pb

interface to enable the communication between the BSC and the PCU.

The interface processing subsystem of the BSC cannot provide the Gb interface and Pb interface

simultaneously.

The interface processing subsystem supports different transmission modes over the A interface:

l When the IP transmission is used, the A interface enables the communication between the

BSC and the MGW.

l When the TDM transmission is used, the A interface enables the communication between

the BSC and the MSC/MGW.

The interface processing subsystem of the BSC does not support the two transmission modes

simultaneously.






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5 BSC Hardware ConfigurationAbout This Chapter

The GBAM and GOMU are the operation and maintenance entities of the BSC. There are two

types of BSC hardware configuration: configuration type A and configuration type B. In

configuration type A, the BSC is configured with the GBAM. In configuration type B, the BSC

is configured with the GOMU. One BSC can use only one configuration type.

5.1 BSC Hardware Configuration

This describes three types of BSC subracks, two installation modes of the GTCS, three

combination modes of BSC subracks, two types of PCU, and two types of hardware

configuration.

5.2 BSC Hardware Configuration Type A

The BSC hardware configuration type A refers to the BSC configured with the GBAM, which

enables the communication between the BSC and the LMT. The number of BSC cabinets and

BSC subracks varies with the capacity requirements for the BSC.

5.3 BSC Hardware Configuration Type B

In BSC hardware configuration type B, the BSC is configured with the GOMU, which enables

the communication between the BSC and the LMT. The number of BSC cabinets and BSC

subracks varies with the capacity requirements for the BSC.


BSC Product Description 5 BSC Hardware Configuration



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5.1 BSC Hardware Configuration

This describes three types of BSC subracks, two installation modes of the GTCS, three

combination modes of BSC subracks, two types of PCU, and two types of hardware

configuration.

BSC Subrack

The BSC subracks can be classified into the following types:

l GMPS

l GEPS

l GTCS

Generally, both the GMPS and GEPS are referred to as the BM subrack, and the GTCS is referredto as the TC subrack.

Both the BM subracks and the TC subracks have two interconnection modes.

l Inter-Subrack TDM Interconnections

The inter-subrack TDM interconnections between one BM subrack and another BM

subrack and between one TC subrack and another TC subrack are established through the

inter-GTNU cables. 6.1 Physical Structure of the BSC TDM Switching Subsystem

l Inter-Subrack GE Interconnections

The GSCUs in the BM subracks or in the TC subracks are connected in star topology

through crossover cable or unshielded straight-through cable. The subrack located in thecenter of the star topology is referred to as the main subrack, and the subracks connected

to the main subrack are referred to as extension subracks. For the inter-subrack GE

interconnection of BM subracks, the GMPS must be the main subrack, and the GEPS must

be the extension subrack. For the inter-subrack GE interconnection of TC subracks, any

TC subrack can be the main subrack, and the other TC subracks must be extension subracks.

7.1 Physical Structure of the BSC GE Switching Subsystem

Installation Modes of the GTCS

The installation modes of the GTCS are classified into local configuration and remote

configuration based on the location of the GTCS.

In local configuration mode, the GTCS and the GMPS/GEPS can be configured in the same

cabinet. In this case, the GSCU in the GMPS and the GSCU in the GTCS are connected through

crossover cables or unshielded straight-through cable.

In remote configuration mode, the GTCS and the GMPS/GEPS are configured in different

subracks. In other words, the GTCSs are configured in an independent GBSR. In this case, the

GSCU in the GMPS is not connected to the GSCU in the GTCS.

l Figure 5-1 shows the OM path between the GMPS and the GTCS in the case of the local

configuration mode.

l

Figure 5-2 shows the OM path between the GMPS and the GTCS in the case of the remoteconfiguration mode.






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Figure 5-1 OM path between the GMPS and the main GTCS (in local GTCS mode)

G

E

IU

T

Extension GTCSMain GTCS

G

E

IU

T

AterGMPS

G

E

I

U

T

GEPS

G

E

I

U

T

G

S

CU

G

S

CU

G

S

C

U

G

S

C

U

Figure 5-2 OM path between the GMPS and the main GTCS (in remote GTCS mode)

G

E

I

U

T

Extension GTCSMain GTCS

AterGMPS

G

E

I

U

T

GEPS

G

E

I

U

T

Ater

G

E

I

U

T

G

S

C

U

G

S

C

U

G

S

C

U

G

S

C

U

As shown in Figure 5-1, when OM is performed on the local GTCS, the OM information is

carried by the GE link between the GSCU in the GMPS and the GSCU in the main GTCS. The

transmission rate is fast.

As shown in Figure 5-2, when OM is performed on the remote GTCS, the OM information is

carried by the E1/T1 link between the GEIUT/GOIUT in the GMPS and the GEIUT/GOIUT in

the main GTCS. The transmission rate is slow.

The application scenarios of the local GTCS and remote GTCS are as follows: If the distance

between the GSCU in the GMPS and the GSCU in the main GTCS exceeds the maximum length

of a crossover cable or a unshielded straight-through cable, the remote GTCS should be

configured. Otherwise, the local GTCS should be configured. The maximum length of the cables

delivered on site is 10 m.

Configuration Modes of BSC Subracks

The BSC subracks support the following configuration modes:





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l BM/TC separated

In BM/TC separated configuration mode, the BSC consists of the GMPS/GEPS and GTCS.

The GTCS can be configured on the BSC side or on the MSC side.

Characteristics: In this configuration mode, the GTCS can be configured flexibly. The

GTCS can be configured in an independent GBSR on the MSC side, thus saving thetransmission resources between the BSC and the MSC. The GTCS can be configured on

the BSC side and share a cabinet with other subracks.

l BM/TC combined

In BM/TC combined configuration mode, the TC function is performed by the GMPS or

GEPS. When the TC is configured in the GMPS, the subrack is still referred to as the GMPS.

When the TC is configured in the GEPS, the subrack is still referred to as the GEPS. In

BM/TC combined configuration mode, the TC function is performed by the GDPUX.

Characteristics: Compared with the BM/TC separated configuration mode, the BSC in BM/

TC combined configuration mode has a high density of integration. In addition, when the

capacity is the same, the BSC in BM/TC combined configuration mode has fewer cabinets

and subracks.

l A over IP

In A over IP configuration mode, the BSC consists of the GMPS/GEPS and is not

configured with the GTCS. In this case, layer 3 of the A interface protocol stack uses IP,

and the TC function is performed by the MGW. Thus, the GTCS is not required.

Characteristics: In A over IP configuration mode, the BSC has few cabinets and subracks.

In this case, the BSC must be connected to the Huawei MGW.

Types of PCU

The BSC supports two types of PCU: built-in PCU and external PCU.

l The external PCU is an independent network element that provides PS service processing

functions. It communicates with the BSC over the Pb interface, and communicates with

the SGSN over the Gb interface.

Characteristics: The external PCU requires a large floor area and is difficult for installation

and maintenance.

l The built-in PCU is the GDPUP, which provides PS service processing functions. The

GDPUP is configured in the GMPS/GEPS.

Application scenario: Compared with the external PCU, the built-in PCU is a board that

can be installed in a BSC subrack. The built-in PCU features small footprint, easy cabling,

and convenient installation and maintenance.

The requirements for the configuration of the PCU vary with the transmission modes over the

Abis interface.

l When the HDLC protocol is used for layer 2 or the IP protocol is used for layer 3 of the

protocol stack on the Abis interface, the BSC must use the built-in PCU.

l If TDM transmission is used over the Abis interface, the BSC can use either the built-in

PCU or the external PCU.

BSC Hardware Configuration Types

The BSC supports two types of server: GBAM and GOMU. The GBAM/GOMU enables thecommunication between the Local Maintenance Terminal and the BSC.






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l The GBAM is independent from the BSC components. It is connected to the GSCU in the

GMPS through the FE/GE port. If the GBAM is used, it is configured in subrack 0 of the

GBCR.

Characteristics: The GBAM occupies the space of one subrack in the GBCR. In addition,

the cable connections for the GBAM are complex.l The GOMU is a type of board in the BSC. One GOMU occupies two slots. The GOMU

should be installed in slots 00 to 03 or slots 20 to 23 or slots 24 to 27 in the GMPS.

Characteristics: Compared with the GBAM, the GOMU requires a small installation space.

In addition, the GOMU features simple cable connection and easy installation and

maintenance.

The BSC hardware configuration is classified into configuration type A and configuration type

B based on the server used.

l In configuration type A, the BSC is configured with the GBAM.

l

In configuration type B, the BSC is configured with the GOMU. Compared withconfiguration type A, the BSC in configuration type B can save a subrack. In addition, the

cable connection is simple and the installation and maintenance is easy.

5.2 BSC Hardware Configuration Type A

The BSC hardware configuration type A refers to the BSC configured with the GBAM, which

enables the communication between the BSC and the LMT. The number of BSC cabinets and

BSC subracks varies with the capacity requirements for the BSC.

5.2.1 BM/TC Separated (Configuration Type A)

In the BM/TC separated (configuration type A), the BSC is configured with the GBAM, and the

BM and TC are configured in different subracks. The following describes the maximum,

minimum, and recommended configurations.

5.2.2 BM/TC Combined (Configuration Type A)

In the BM/TC combined (configuration type A), the BSC is configured with the GBAM, and

the BM and TC are configured in the same subrack. The following describes the maximum,


5.2.3 A over IP (Configuration Type A)

In the A over IP (configuration type A), the BSC is configured with the GBAM, and IP

transmission is used on the A interface. The following describes the maximum, minimum, and

recommended configurations.

5.2.1 BM/TC Separated (Configuration Type A)

In the BM/TC separated (configuration type A), the BSC is configured with the GBAM, and the

BM and TC are configured in different subracks. The following describes the maximum,


Minimum Configuration

In the minimum configuration, the BSC is configured with one GMPS, one GTCS, and one

GIMS. In this case, the BSC supports 512 TRXs. The number of cabinets to be configured varieswith the location of the GTCS.





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l When the GTCS is configured on the BSC side, a minimum of one cabinet must be

configured, as shown in Figure 5-3.

l When the GTCS is configured on the MSC side, a minimum of two cabinets must be


Figure 5-3 BSC minimum configuration (GTCS configured on the BSC side)

GBCR

GTCS

GMPS

GIMS

Figure 5-4 BSC minimum configuration (GTCS configured on the MSC side)

GBCR

GMPS

GIMS

GBSR

GTCS

Maximum Configuration

The maximum configuration of the BSC is achieved through capacity expansion from its

minimum configuration. The BSC in the maximum configuration supports 2,048 TRXs. In

maximum configuration, the number of cabinets to be configured varies with the transmission

modes used on the A interface.






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When E1/T1 transmission is used on the A interface, the BSC can be configured with one GMPS,

three GEPSs, four GTCSs, and one GIMS in maximum configuration. The number of cabinets

to be configured varies, depending on the location of the GTCS.

l When the GTCS is configured on the BSC side, a maximum of three cabinets can be


l When the GTCS is configured on the MSC side, a maximum four cabinets can be


Figure 5-5 BSC maximum configuration (GTCS configured on the BSC side)

GBSR

GTCS

GTCS

GTCS

GBCR

GEPS

GMPS

GIMS

GBSR

GTCS

GEPS

GEPS

Figure 5-6 BSC maximum configuration (GTCS configured on the MSC side)

GBCR

GEPS

GMPS

GIMS

GBSR

GEPS

GEPS

GBSR

GTCS

GTCS

GTCS

GBSR

GTCS

When STM-1 transmission is used on the A interface, the BSC can be configured with one

GMPS, two GEPSs, two GTCSs, and one GIMS in maximum configuration.

l

When the GTCS is configured on the BSC side, a maximum of two cabinets can beconfigured, as shown in Figure 5-7.





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l When the GTCS is configured on the MSC side, a maximum of three cabinets can be


Figure 5-7 BSC maximum configuration (GTCS configured on the BSC side)

GBCR

GEPS

GMPS

GIMS

GBSR

GTCS

GEPS

GTCS

Figure 5-8 BSC maximum configuration (GTCS configured on the MSC side)

GBCR

GEPS

GMPS

GIMS

GBSR

GEPS

GEPS

GBSR

GTCS

GTCS

Recommended Configuration

Table 5-1 lists the recommended configuration of the BSC. You can choose the appropriate

configuration based on the actual requirements.






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Table 5-1 Recommended configuration of the BSC

Configuration

Number of Cabinets Number ofTRXs

Remarks

GTCS

Configuredon the BSCSide

GTCS

Configured onthe MSC Side

1GMPS

+1GTCS

+GIMS

1 2 512 The E1/T1 or

STM-1

transmission is

used on the Abis/

Ater interface. The

E1/T1

transmission is

used on the A

interface.

1GMPS

+1GTCS

+GIMS

1 2 512 The E1/T1 or

STM-1

transmission is

used on the Abis/

Ater interface. The

STM-1

transmission is

used on the A

interface.

1xGMPS

+1xGEPS

+GIMS

+2xGTCS

2 2 1 280 The E1/T1 or

STM-1

transmission is

used on the Abis/

Ater interface. The

E1/T1

transmission is

used on the A

interface.

1xGMPS

+1xGEPS

+GIMS

+1xGTCS

2 2 1 280 The E1/T1 or

STM-1

transmission is

used on the Abis/Ater interface. The

STM-1

transmission is

used on the A

interface.





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Configuration

Number of Cabinets Number ofTRXs

Remarks

GTCSConfiguredon the BSCSide

GTCSConfigured onthe MSC Side

1GMPS

+3GEPS

+GIMS

+4GTCS

3 4 2 048 The E1/T1 or

STM-1

transmission is

used on the Abis/

Ater interface. The

E1/T1

transmission is

used on the A

interface.

1GMPS+2GEPS

+GIMS

+2GTCS

2 3 2 048 The E1/T1 or STM-1

transmission is

used on the Abis/

Ater interface. The

STM-1

transmission is

used on the A

interface.

5.2.2 BM/TC Combined (Configuration Type A)

In the BM/TC combined (configuration type A), the BSC is configured with the GBAM, and

th

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