【正文】 .... 2 第 2章 數(shù)字移動(dòng)通信技術(shù) ....................................................................................................... 3 多址技術(shù) ......................................................................................................................3 頻分多址 ............................................................................................................3 時(shí)分多址 ............................................................................................................4 碼 分多址 ............................................................................................................4 功率控制 ......................................................................................................................5 蜂窩技術(shù) ......................................................................................................................5 頻率復(fù)用的概念 ..................................................................................................5 頻率復(fù)用方案 .....................................................................................................6 頻率復(fù)用距離 .....................................................................................................6 第 3章 GSM系統(tǒng)結(jié)構(gòu)與相關(guān)接口 .......................................................................................... 8 GSM 系統(tǒng)結(jié)構(gòu) ..............................................................................................................8 系統(tǒng)的基本特點(diǎn) ..................................................................................................8 系統(tǒng)的結(jié)構(gòu)與功能 ..............................................................................................8 接口和協(xié)議 ................................................................................................................ 14 主要接口 .......................................................................................................... 14 網(wǎng)路子系統(tǒng)內(nèi)部接口 ......................................................................................... 15 GSM 系統(tǒng)與其它公用電信網(wǎng)的接口 .................................................................... 17 各接口協(xié)議 ...................................................................................................... 17 GSM 系統(tǒng)主要參數(shù) ..................................................................................................... 20 第 4章 移動(dòng)區(qū)域定義與識(shí)別號(hào) .............................................................................................. 22 區(qū)域定義 .................................................................................................................... 22 服務(wù)區(qū) ............................................................................................................. 22 公用陸地移動(dòng)通信網(wǎng)（ PLMN） ......................................................................... 22 MSC 區(qū) ............................................................................................................ 23 位置區(qū) ............................................................................................................. 23 基站區(qū) ............................................................................................................. 23 小區(qū) ................................................................................................................ 23 移動(dòng)識(shí)別號(hào) ................................................................................................................ 23 IMSI (International Mobile Subscriber Identity)： ................................................. 23 TMSI (Temporary Mobile Subscriber Identity)： .................................................. 24 LMSI (Local Mobile Subscriber Identity)： .......................................................... 25 MA000001 GSM 數(shù)字移動(dòng)通信原理 目錄 華為技術(shù)有限公司 版權(quán)所有 , 未經(jīng)許可不得擴(kuò)散 ii MSISDN(Mobile Subscriber International ISDN/PSTN number)： ......................... 25 MSCNumber(MSC 號(hào)碼 )/VLRNumber(VLR號(hào)碼 ) .............................................. 26 RoamingNumber(漫游號(hào)碼 )與 HandoverNumber(切換號(hào)碼 ) ............................... 26 HLRNumber(HLR 號(hào)碼 ) ................................................................................... 27 LAI(Location Area Identification位置區(qū) ) ............................................................ 27 CGI(Cell Global Identification全球小區(qū)識(shí)別 )...................................................... 28 RSZI (Regional Subscription Zone Identity)....................................................... 28 BSIC（基站識(shí)別色碼） .................................................................................... 28 IMEI（國(guó)際移動(dòng)設(shè)備識(shí)別碼） ........................................................................... 29 第 5章 GSM系統(tǒng)的無(wú)線(xiàn)接口與系統(tǒng)消息 .............................................................................. 30 無(wú)線(xiàn)接口 .................................................................................................................... 30 語(yǔ)音編碼 .......................................................................................................... 30 信道編碼 .......................................................................................................... 31 交織 ................................................................................................................ 31 調(diào)制技術(shù) .......................................................................................................... 33 跳頻 ................................................................................................................ 34 時(shí)序調(diào)整 .......................................................................................................... 35 幀和信道 .................................................................................................................... 35 基本術(shù)語(yǔ)簡(jiǎn)介 ................................................................................................... 35 信道類(lèi)型和組合 .............................................................................