目錄 ..................................................................................................................................................3
1. 概述...........................................................................................................................................1
2. 前期準備...................................................................................................................................1
2.1 后臺軟件的安裝及登錄....................................................................................................1
2.2 跟蹤任務(wù)的執(zhí)行................................................................................................................3
2.2.1 跟蹤Uu 接口信令消息.........................................................................................4
2.2.2 跟蹤Iub 接口信令消息..........................................................................................4
2.2.3 跟蹤Iu 接口信令消息............................................................................................5
2.2.4 跟蹤UE（標準接口消息）...................................................................................6
2.2.5 跟蹤CDT...................................................................................................................7
2.3 后臺信令回顧....................................................................................................................9
3. 信令流程介紹.........................................................................................................................10
3.1 主叫流程..........................................................................................................................10
3.1.1. RRC 連接建立流程.............................................................................................10
3.1.2.初始直接傳輸/上下行直接傳輸（含鑒權(quán)階段和安全模式）..........................14
3.1.3 RAB 建立流程.......................................................................................................20
3.1.4 振鈴接聽...............................................................................................................22
3.2 被叫流程..........................................................................................................................23
3.2.1 尋呼流程...............................................................................................................23
3.2.2 完整被叫信令流程...............................................................................................23
3.3 呼叫釋放流程..................................................................................................................25
3.3.1 CN 發(fā)起的釋放流程.............................................................................................25
3.3.2 UE 發(fā)起的釋放流程.............................................................................................27
3.4 切換流程.........................................................................................................................28
3.4.1.NodeB 內(nèi)小區(qū)間接力切換....................................................................................28
3.4.2 NodeB 內(nèi)小區(qū)間硬切換........................................................................................32
3.4.3 RNC 內(nèi)NodeB 間小區(qū)接力切換.........................................................................33
3.4.4 RNC 內(nèi)NodeB 間小區(qū)硬切換.............................................................................34
3.4.5 RNC 間硬切換......................................................................................................34
3.5 小區(qū)/URA 更新..............................................................................................................36
3.5.1 小區(qū)更新流程.....................................................................................................36
3.5.2 URA 更新流程......................................................................................................38
4.常見異常信令.............................................................................................................................39
4.1 呼叫異常信令流程.........................................................................................................39
4.1.1 RRC 連接建立異常流程......................................................................................39
4.1.2 RRC 連接擁塞或無響應(yīng).......................................................................................46
4.1.3 RAB 建立異常流程.............................................................................................52
4.1.4 測量控制異常流程..............................................................................................56
4.1.5 安全模式控制異常流程......................................................................................56
4.2 切換異常流程.................................................................................................................57
4.2.1 同RNC 不同NodeB 小區(qū)切換異常流程.............................................................57
4.2.2 切換失敗問題處理思路.....................................................................................62
TD-SCDMA 后臺話統(tǒng)分析指導(dǎo)書
4.2.3 RNC 間硬切換異常流程.......................................................................................62
4.3 更新過程異常流程..........................................................................................................67
4.3.1 小區(qū)更新異常流程..............................................................................................67
4.3.2 URA 更新異常流程.............................................................................................67
4.4 無線鏈路失敗分析與處理..............................................................................................67
4.4.1 UE 側(cè)檢測無線鏈路失敗.................................................................................67
4.4.2 無線鏈路失敗準則.............................................................................................68
4.4.3 無線鏈路失敗后UE 的行為..............................................................................68
4.4.4 Node B 側(cè)檢測無線鏈路失敗...........................................................................68
4.4.5 Radio Link Failure Indication 過程的典型原因...................................68
4.4.6 Radio Link Failure Indication 過程的典型應(yīng)用.....................................68
4.5 釋放原因值.....................................................................................................................69
4.5.1 CN 發(fā)起Uu 接口釋放........................................................................................69
4.5.2 UE 發(fā)起Uu 接口釋放........................................................................................69
4.5.3 Uu 接口RRC 連接釋放......................................................................................69
4.5.4 Iu 接口釋放.......................................................................................................70
5.案例.............................................................................................................................................71
5.1 起呼失敗.........................................................................................................................71
5.2 切換問題.........................................................................................................................73