目 录

第1章 CT工具的基本知识 .......................................................................................................... 4

1.1CT工具的配置 ...................................................................................................................... 4

1.1.1服务器端配置 ............................................................................................................. 4

1.1.2客户端配置 ................................................................................................................. 4

1.1.3单机版使用 ................................................................................................................. 6

第2章 信令分析说明..................................................................................................................... 7

2.1 基本知识准备 ...................................................................................................................... 7

2.1.1如何看业务信令 ......................................................................................................... 7

2.1.2流程中的几个重要概念 ............................................................................................. 9

2.2 RRC建立过程的信令分析 ................................................................................................ 10

2.2.1 RRC Connection Request信令综述 ......................................................................... 10

2.2.2 RRC Connection Request信令 ................................................................................. 11

2.2.3 Radio Link Setup信令 .............................................................................................. 13

2.2.4 Radio Link Setup Response信令 .............................................................................. 26

2.2.5 Radio Link Setup Failure信令 .................................................................................. 27

2.2.6 RRC Connection Setup信令 ..................................................................................... 28

2.2.7 Radio Link Restore Indication信令 .......................................................................... 37

2.2.8 RRC Connection SetupComplete信令 ..................................................................... 37

2.2.8 RRC建立过程中常见问题 ...................................................................................... 38

2.3初始直传信令分析 ............................................................................................................. 39

2.3.1 InitialDirectTransfer信令分析 ................................................................................. 41

2.3.2 InitialUEMessage信令分析 ..................................................................................... 42

2.3.2 CommonID信令分析 ............................................................................................... 42

2.4鉴权过程（可选）信令分析 ............................................................................................. 43

2.4.1 DirectTransfer信令分析（图中1） ........................................................................ 46

2.4.2 DownLinkDirectTransfer信令分析（图中2） ....................................................... 46

2.4.3 UpLinkDirectTransfer信令分析（图中3） ............................................................ 47

2.4.4 DirectTransfer信令分析（图中4） ........................................................................ 47

2.4.5 鉴权过程中常见问题 .............................................................................................. 48

2.5安全模式信令分析 ............................................................................................................. 48

2.5.1 SecurityModeCommand（Iu口上，CN到RNC） ................................................ 49

2.5.2 SecurityModeCommand（Uu口上，RNC到UE） ............................................... 53

2.5.3 securityModeComplete（Uu口上，UE到RNC） ................................................. 53

2.5.4 securityModeComplete（Iu口上，RNC到CN） .................................................. 54

2.6直传信令分析 ..................................................................................................................... 54

2.6.1 Setup过程信令分析 ................................................................................................. 55

2.6.2 Call Proceeding过程信令分析 ................................................................................. 56

2.7 RAB建立过程信令分析 .................................................................................................... 57

2.7.1 RAB Assignment Request信令分析 ........................................................................ 61

2.7.2 Radio Link Reconfiguration Prepare信令分析 ........................................................ 65

2.7.3 Radio Link Reconfiguration Ready ........................................................................... 76

2.7.4 Radio Link Reconfiguration Failure .......................................................................... 76

2.7.5 Radio Link Reconfiguration Commit ........................................................................ 78

2.7.6 Radio Bearer Setup信令分析 ................................................................................... 78