00-2 Contents.pdf

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HUAWEI PCU6000 Packet Control Unit

Technical Manual Contents

Issue 06 (2008-09-15)Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltdi

Contents

About This Document.....................................................................................................................1

1 General Introduction.................................................................................................................1-1

1.1 Overview of Functions ................................................................ ................................................................ 1-2

1.2 Topology......................................................................................................................................................1-3

1.3 Features .......................................................... .................................................................. ...........................1-4

1.4 Technical Specifications.............................................................................. ................................................ 1-5

2 Functional Description..............................................................................................................2-1

2.1 Overview........................................................... ............................................................... ...........................2-2

2.2 Service Processing Function........................................................................................................................2-2

2.2.1 Packet Channel Configuration...........................................................................................................2-3

2.2.2 Packet Access Support.......................................................................................................................2-6

2.2.3 Paging Processing .............................................................................................................................2-7

2.2.4 DRX Support.....................................................................................................................................2-8

2.2.5 Radio Resources Allocation ..............................................................................................................2-8

2.2.6 System Information Broadcasting..................................................................... ................................2-8

2.2.7 Radio Link Control............................................................................................................................2-9

2.2.8 Channel Coding Schemes and CS Change Control...........................................................................2-9

2.2.9 Modulation and Coding Schemes and MCS Change Control ......................................................... 2-10

2.2.10 G-TRAU Frame Transmission ........................................................... ........................................... 2-11

2.2.11 Radio Link Monitoring..................................................................................................................2-11

2.2.12 Radio Frequency Power Control ............................................................................ .......................2-12

2.2.13 Cell Reselection Control ...............................................................................................................2-122.2.14 Supporting the PFM/PFC.................................................................. ............................................2-13

2.2.15 Flow Control and QoS Guarantee ................................................................. ................................2-13

2.2.16 Mobility Management and Communication Management............................................................ 2-14

2.2.17 Gb Over IP ....................................................................................................................................2-15

2.2.18 PFC High-Priority Preemption......................................................................................................2-15

2.2.19 Supporting Dynamic Adjustment of the Load...............................................................................2-15

2.2.20 Providing the Automatic Upgrade Function of the Board............................................................. 2-16

2.2.21 Supporting the User Password Security Function ........................................................................ .2-16

2.3 Signaling Function ....................................................................................................................................2-17


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iiHuawei Proprietary and Confidential

Copyright Huawei Technologies Co., LtdIssue 06 (2008-09-15)

2.3.1 Gb Interface Signaling.....................................................................................................................2-17

2.3.2 In-Band Signaling Between PCU and BTS.....................................................................................2-20

2.3.3 Pb Interface Signaling .................................................................. ................................................... 2-20

2.4 Operation and Maintenance Function........................................................................................................2-20

2.4.1 Network Maintenance ................................................................. .................................................... 2-20

2.4.2 Operation and Maintenance Management.......................................................................................2-21

2.4.3 Configuration Management.............................................................................................................2-22

2.4.4 Alarm Management.......................................................... ............................................................... 2-22

2.4.5 Performance Measurement..............................................................................................................2-22

2.4.6 Interface Tracing .............................................................................................................................2-22

2.4.7 Security Management......................................................................................................................2-23

3 System Structure ........................................................................................................................3-1

3.1 Overview........................................................... ............................................................... ...........................3-2

3.2 Hardware Structure......................................................................................................................................3-2

3.3 Software Structure.......................................................................................................................................3-5

3.3.1 HUAWEI PCU6000 Operating System............................................................................ .................3-6

3.3.2 POMU Software................................................................................................................................3-7

3.3.3 RPPU Software .................................................................................................................................3-8

3.3.4 L2PU/HLPU Software ....................................................................................................................3-10

3.4 Equipment Features...................................................................................................................................3-11

3.4.1 Gb Interface.....................................................................................................................................3-11

3.4.2 G-Abis Interface..............................................................................................................................3-11

3.4.3 Pb Interface .....................................................................................................................................3-11

3.4.4 Operation and Maintenance.............................................................................................................3-11

3.4.5 Clock Synchronization ....................................................................... .............................................3-12

3.4.6 Overload Processing........................................................................................................................3-12

3.4.7 POMU Simple Hot Backup.............................................................................................................3-13

3.4.8 Dynamic Data Configuration ..........................................................................................................3-14

3.4.9 Backup of the Cells of the Same BSC.............................................................................................3-15

3.4.10 Software Loading ......................................................... ................................................................. 3-15

3.4.11 Satellite Transmission Function.....................................................................................................3-18

3.4.12 On Line Patches ............................................................................................................................3-183.4.13 License .................................................................... .................................................................... ..3-18

4 Interface Functions ....................................................................................................................4-1

4.1 Gb interface ............................................................. .................................................................. ..................4-2

4.1.1 Overview...........................................................................................................................................4-2

4.1.2 Signaling at Different Layers of the Gb Interface ........................................................................ .....4-3

4.1.3 Characteristics of the Gb Interface....................................................................................................4-5

4.2 G-Abis Interface..........................................................................................................................................4-5

4.2.1 Overview...........................................................................................................................................4-5

4.2.2 Characteristics of the G-Abis Interface ................................................................... ..........................4-5


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4.2.3 Physical Layer/Transmission Media..................................................................................................4-7

4.2.4 A Brief Introduction to G-TRAU Frame Structure........................ .................................................... 4-8

4.2.5 Characteristics of the G-Abis Interface ................................................................... ..........................4-9

4.3 Pb Interface ...............................................................................................................................................4-10

4.3.1 Overview.........................................................................................................................................4-10

4.3.2 Internal Structure of the Pb Interface ..............................................................................................4-11

4.3.3 Characteristics of Pb Interface ........................................................................................................4-11

4.4 O Interface.................................................................................................................................................4-12

4.4.1 Overview.........................................................................................................................................4-12

4.4.2 Software Structure...........................................................................................................................4-14

5 Operation & Maintenance........................................................................................................5-1

5.1 Overview........................................................... ............................................................... ...........................5-2

5.2 Characteristics ............................................................. ................................................................ ................5-4

5.3 Implementation of PCU O&M Function..................................................................... ................................5-4

5.3.1 Configuration Management...............................................................................................................5-4

5.3.2 Alarm Management.......................................................... ................................................................. 5-6

5.3.3 Performance Measurement................................................................................................................5-7

5.3.4 Interface Information Tracing .........................................................................................................5-12

6 Technical Indices........................................................................................................................6-1

6.1 Product Safety ................................................................ ..................................................................... ........6-2

6.1.1 Safety Standard..................................................................................................................................6-2

6.1.2 Physical Protection Characteristics ...................................................................................................6-2

6.1.3 Data Backup and Security Characteristics.........................................................................................6-2

6.2 Environmental Conditions...........................................................................................................................6-3

6.2.1 Environmental Conditions Required by the Equipment....................................................................6-3

6.2.2 EMC..................................................................................................................................................6-3

6.2.3 Noise .................................................................................................................................................6-3

6.2.4 Storage Condition..............................................................................................................................6-4

6.2.5 Transportation Condition...................................................................................................................6-4

6.3 Power Supply and Power Consumption .............................................................. ........................................6-4

6.4 Capacity.......................................................................................................................................................6-4

6.4.1 Maximum Capacity...........................................................................................................................6-4

6.4.2 Minimum Capacity............................................................................................................................6-5

7 Configuration and Examples ...................................................................................................7-1

7.1 GPRS Configuration and Examples ..................................................................... .......................................7-2

7.2 EGPRS Configuration and Examples..........................................................................................................7-4

A Basics about RLC/MAC ......................................................................................................... A-1

A.1 Basic Concepts .................................................................. .................................................................. ......A-2

A.1.1 Radio Block.....................................................................................................................................A-2

A.1.2 TBF (Temporary Block Flow).........................................................................................................A-2


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Contents


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A.1.3 TFI (Temporary Flow Identity) ....................................................................................................... A-2

A.1.4 USF (Uplink State Flag)..................................................................................................................A-2

A.1.5 GPRS MS Type ....................................................... .................................................................. ......A-2

A.1.6 Network Operation Mode................................................................................................................A-3

A.2 Basic Flow for PCU...................................................................................................................................A-3

A.2.1 Uplink TBF Setup and Data Transmission Flow............................................................................ .A-3

A.2.2 Packet Paging Flow.........................................................................................................................A-5

A.2.3 Circuit Page Flow............................................................................................................................A-6

A.2.4 Downlink TBF Setup and Data Transmission Flow..................................................................... ...A-6

B Abbreviation .............................................................................................................................B-1

Index ................................................................................................................................................ i-1


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Technical Manual Figures


Copyright Huawei Technologies Co., Ltdv

Figures

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

Figure 1-2 Location of the PCU .......................................................................................................................1-3

Figure 1-3 Typical topology of the PCU...........................................................................................................1-3

Figure 2-1 Signaling plane of the GPRS BSS ..................................................................................................2-2Figure 2-2 Radio channel structure...................................................................................................................2-5

Figure 2-3 Gb interface point-to-point frame relay connection......................................................................2-17

Figure 2-4 Gb interface intermediate frame relay network connection.......................................................... 2-17

Figure 2-5 Direct connection mode in the Gb Over IP network.......................................................... ...........2-18

Figure 2-6 Router connection mode in the Gb Over IP network .................................................................... 2-18

Figure 3-1 PCU logic structure.........................................................................................................................3-2

Figure 3-2 Configuration of the HUAWEI PCU6000 cabinet........ .................................................................. 3-3

Figure 3-3 HUAWEI PCU6000 processing frame configuration ............................................... ......................3-4

Figure 3-4 HUAWEI PCU6000 hardware structure ........................................................... ..............................3-4

Figure 3-5 HUAWEI PCU6000 software logic structure ........................................................... ......................3-5

Figure 3-6 POMU software loading flow 1....................................................................................................3-15

Figure 3-7 RPPU software loading flow.........................................................................................................3-16

Figure 3-8 L2PU/HLPU software loading flow.............................................................................................. 3-17

Figure 4-1 Gb protocol stack ............................................................... ............................................................. 4-2

Figure 4-2 BSSGP service models....................................................................................................................4-4

Figure 4-3 The O interface of GPRS/GSM.....................................................................................................4-13

Figure 4-4 Software structure of the O interface ........................................................................... .................4-14

Figure 5-1 GSM/GPRS O&M system ...................................................................... ........................................5-2

Figure 5-2 PCU O&M system........................................................... ............................................................... 5-3

Figure 5-3 The connection between PCU and OMC.................................................................... ....................5-3

Figure 5-4 Structure of the HUAWEI PCU6000 traffic measurement system .......................................... .......5-7

Figure A-1 TBF setup flow for short access and one phase access..................................................................A-4


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Figures


Technical Manual

viHuawei Proprietary and Confidential


Figure A-2 Flow for two-phase access TBF setup...........................................................................................A-4

Figure A-3 Flow for uplink ACK data transmission........................................................................................A-5

Figure A-4 Downlink TBF setup flow.............................................................................................................A-6

Figure A-5 Downlink data transmission flow..................................................................................................A-6


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Technical Manual Tables


Copyright Huawei Technologies Co., Ltdvii

Tables

Table 2-1 Description of priority ......................................................................................................................2-5

Table 2-2 Channel coding schemes...................................................................................................................2-9

Table 2-3 Channel coding schemes.................................................................................................................2-10

Table 3-1 Measures for PCU faults.................................................................................................................3-14Table 4-1 Transmission parameters relating to coding schemes............................................................ ...........4-6

Table 4-2 Transmission parameters relating to modulation and coding schemes .............................................4-6

Table 4-3 Example of the timeslot configuration for the G-Abis interface (PCU-BSC)...................................4-7

Table 4-4 Example of the timeslot configuration for the G-Abis interface (BSC-BTS)...................................4-8

Table 4-5 Structure of the G-TRAU frame .......................................................................................... .............4-8

Table 6-1 Environmental storage condition required by the HUAWEI PCU6000 equipment..................... .....6-3

Table 6-2 EMC specifications...........................................................................................................................6-3

Table 6-3 Specifications of noise and security..................................................................................................6-3

Table 6-4 Power supply and power consumption of the PCU .......................................................................... 6-4

Table 6-5 The processing capability of PCU with the maximum configuration...............................................6-4

Table 6-6 The processing capability of PCU with the minimum configuration................................................ 6-5

Table 7-1 PCU GPRS configuration example 1................................................................................................7-2

Table 7-2 The PCU GPRS configuration example 2.........................................................................................7-3

Table 7-3 The PCU EGPRS configuration example ................................................................. ........................7-4

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