【資料名稱】：EVDO系統(tǒng)詳解

【資料作者】：unkown

【資料日期】：2010

【資料語言】：中文

【資料格式】：PDF

【資料目錄和簡介】：

第一章 EVDO 概述.......................................................................................................................1
1.1 引言..........................................................................................................................................1
1.2 EVDO 的功能要求..................................................................................................................2
1.3 EVDO 的設(shè)計思想..................................................................................................................2
1.3.1 時分復用.......................................................................................................................3
1.3.2 多用戶調(diào)度...................................................................................................................4
1.3.3 鏈路自適應(yīng)...................................................................................................................4
1.3.4 HARQ ...........................................................................................................................4
1.3.5 速率控制.......................................................................................................................5
1.4 EVDO 網(wǎng)絡(luò)結(jié)構(gòu)......................................................................................................................6
1.4.1 網(wǎng)絡(luò)構(gòu)成及其基本功能...............................................................................................6
1.4.2 網(wǎng)絡(luò)接口協(xié)議及其功能...............................................................................................7
1.5 EVDO 的發(fā)展情況..................................................................................................................8
1.5.1 標準化進展...................................................................................................................8
1.5.2 商用進展.......................................................................................................................9
1.5.3 市場前景.......................................................................................................................9
第二章 EVDO 空中接口.............................................................................................................11
2.1 空中接口概述........................................................................................................................11
2.1.1 空中接口協(xié)議棧模型.................................................................................................11
2.1.2 空中接口協(xié)議通信方式.............................................................................................13
2.1.3 空中接口信息傳送方式.............................................................................................13
2.2 物理層....................................................................................................................................15
2.2.1 前向信道.....................................................................................................................15
2.2.1.1 前向信道劃分..................................................................................................15
2.2.1.2 前向信道的時隙結(jié)構(gòu)......................................................................................16
2.2.1.3 前向信道的標識..............................................................................................16
2.2.1.4 前向信道的物理結(jié)構(gòu)......................................................................................19
2.2.1.5 前向業(yè)務(wù)/控制信道的參數(shù)配置和時隙復用.................................................22
2.2.2 反向信道.....................................................................................................................25
2.2.2.1 反向信道劃分..................................................................................................25
2.2.2.2 接入信道物理結(jié)構(gòu)..........................................................................................26
2.2.2.3 反向業(yè)務(wù)信道物理結(jié)構(gòu)..................................................................................28
2.2.2.4 反向信道調(diào)制參數(shù)..........................................................................................33
2.2.2.5 長碼生成與同步..............................................................................................34
2.3 MAC 層.................................................................................................................................34
2.3.1 MAC 層協(xié)議功能.......................................................................................................34
2.3.2 MAC 層地址匹配.......................................................................................................34
2.3.3 控制信道MAC...........................................................................................................36
2.3.3.1 控制信道MAC 層數(shù)據(jù)封裝...........................................................................36
2.3.3.2 控制信道MAC 的傳送方式...........................................................................37
2.3.4 接入信道MAC...........................................................................................................38
2.3.4.1 接入信道MAC 層數(shù)據(jù)封裝...........................................................................38
2.3.4.2 接入探針的結(jié)構(gòu)..............................................................................................39
2.3.4.3 接入探針序列的結(jié)構(gòu)......................................................................................40
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2.3.4.4 接入過程..........................................................................................................41
2.3.4.5 接入信道長碼掩碼..........................................................................................42
2.3.4.6 接入信道MAC 層主要消息及其關(guān)鍵參數(shù)...................................................42
2.3.5 前向業(yè)務(wù)信道MAC...................................................................................................43
2.3.5.1 前向業(yè)務(wù)信道MAC 層數(shù)據(jù)封裝...................................................................43
2.3.5.2 前向業(yè)務(wù)信道MAC 協(xié)議狀態(tài)轉(zhuǎn)移流程.......................................................44
2.3.6 反向業(yè)務(wù)信道MAC...................................................................................................46
2.3.6.1 反向業(yè)務(wù)信道MAC 層數(shù)據(jù)封裝...................................................................46
2.3.6.2 反向業(yè)務(wù)信道速率控制..................................................................................47
2.3.6.3 反向鏈路靜默..................................................................................................49
2.3.6.4 反向業(yè)務(wù)信道長碼..........................................................................................49
2.3.6.5 反向業(yè)務(wù)信道MAC 層主要消息及其關(guān)鍵參數(shù)...........................................49
2.4 安全層....................................................................................................................................50
2.4.1 安全層協(xié)議功能.........................................................................................................50
2.4.2 安全層數(shù)據(jù)封裝.........................................................................................................50
2.4.3 安全矢量.....................................................................................................................51
2.4.4 密鑰交換.....................................................................................................................51
2.4.5 空口鑒權(quán).....................................................................................................................53
2.4.6 加密.............................................................................................................................54
2.5 連接層....................................................................................................................................54
2.5.1 連接層狀態(tài)機.............................................................................................................55
2.5.2 連接管理.....................................................................................................................57
2.5.2.1 連接建立..........................................................................................................57
2.5.2.2 連接關(guān)閉..........................................................................................................57
2.5.3 路徑更新.....................................................................................................................58
2.5.4 分組合并.....................................................................................................................58
2.5.5 開銷消息管理.............................................................................................................58
2.6 會話層....................................................................................................................................59
2.6.1 協(xié)議交互.....................................................................................................................59
2.6.2 地址分配.....................................................................................................................61
2.6.2.1 UATI 的構(gòu)成...................................................................................................61
2.6.2.2 UATI 的分配...................................................................................................62
2.6.2.3 UATI 與移動性管理.......................................................................................62
2.6.3 配置協(xié)商.....................................................................................................................62
2.7 流層........................................................................................................................................63
2.8 應(yīng)用層....................................................................................................................................64
2.8.1 缺省信令應(yīng)用.............................................................................................................64
2.8.1.1 信令網(wǎng)絡(luò)協(xié)議..................................................................................................64
2.8.1.2 信令鏈路協(xié)議..................................................................................................65
2.8.2 缺省分組應(yīng)用.............................................................................................................66
2.8.2.1 無線鏈路協(xié)議..................................................................................................66
2.8.2.2 位置更新協(xié)議..................................................................................................69
2.8.2.3 流控協(xié)議..........................................................................................................70
2.9 EVDO 空中接口關(guān)鍵技術(shù)....................................................................................................71
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2.9.1 自適應(yīng)調(diào)制編碼.........................................................................................................71
2.9.2 HARQ .........................................................................................................................72
2.9.3 多用戶調(diào)度.................................................................................................................73
2.9.3.1 多用戶調(diào)度準則..............................................................................................73
2.9.3.2 比例公平調(diào)度算法..........................................................................................74
2.9.4 速率控制.....................................................................................................................75
2.9.4.1 前向鏈路速率控制..........................................................................................75
2.9.4.2 反向鏈路速率控制..........................................................................................76
2.9.5 功率控制.....................................................................................................................77
2.9.5.1 前向鏈路功率分配原理及實現(xiàn)......................................................................77
2.9.5.2 反向鏈路功率控制原理及實現(xiàn)......................................................................78
2.9.6 虛擬軟切換.................................................................................................................79
第三章 EVDO IOS 功能介紹.....................................................................................................80
3.1 功能概述................................................................................................................................80
3.1.1 參考模型.....................................................................................................................80
3.1.2 主要作用.....................................................................................................................80
3.1.2.1 在接入鑒權(quán)中的作用......................................................................................81
3.1.2.2 在移動性管理中的作用..................................................................................81
3.1.2.3 在數(shù)據(jù)傳送中的作用......................................................................................81
3.2 A8/A9 接口功能....................................................................................................................82
3.2.1 A8 連接建立...............................................................................................................82
3.2.2 A8 連接重激活...........................................................................................................83
3.2.3 A8 連接釋放...............................................................................................................83
3.2.4 A8 連接參數(shù)更新.......................................................................................................84
3.2.5 A9 接口消息的定時器參數(shù).......................................................................................85
3.3 A10/A11 接口功能................................................................................................................85
3.3.1 A10 連接建立.............................................................................................................85
3.3.2 A10 連接釋放.............................................................................................................86
3.3.3 計費信息傳送.............................................................................................................87
3.3.4 A11 接口消息的定時器參數(shù).....................................................................................87
3.4 A12 接口功能........................................................................................................................87
3.5 A13 接口功能........................................................................................................................88
第四章 EVDO 數(shù)據(jù)呼叫流程.....................................................................................................90
4.1 分組數(shù)據(jù)會話狀態(tài)................................................................................................................90
4.2 HRPD 會話建立、維持與關(guān)閉............................................................................................91
4.2.1 HRPD 會話建立.........................................................................................................91
4.2.2 HRPD 會話維持.........................................................................................................92
4.2.3 HRPD 會話關(guān)閉.........................................................................................................92
4.2.3.1 AT 發(fā)起HRPD 會話關(guān)閉（存在A8 連接） ................................................92
4.2.3.2 AT 發(fā)起HRPD 會話關(guān)閉（不存在A8 連接） ............................................93
4.2.3.3 AN 發(fā)起HRPD 會話關(guān)閉（存在A8 連接）................................................94
4.2.3.4 AN 發(fā)起HRPD 會話關(guān)閉（不存在A8 連接）............................................94
4.3 接入鑒權(quán)................................................................................................................................95
4.4 位置更新................................................................................................................................96
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4.4.1 AT 發(fā)起位置更新.......................................................................................................96
4.4.2 AN 發(fā)起位置更新......................................................................................................97
4.5 HRPD 連接建立....................................................................................................................97
4.5.1 AT 發(fā)起HRPD 連接建立..........................................................................................98
4.5.2 AT 發(fā)起HRPD 連接重激活......................................................................................99
4.5.3 PDSN 發(fā)起HRPD 連接重激活...............................................................................100
4.6 HRPD 連接釋放..................................................................................................................101
4.6.1 AT 發(fā)起HRPD 連接釋放........................................................................................101
4.6.2 AN 發(fā)起HRPD 連接釋放.......................................................................................102
4.6.3 PDSN 發(fā)起HRPD 連接關(guān)閉...................................................................................102
4.7 EVDO 子網(wǎng)切換..................................................................................................................103
4.7.1 相同PCF 下不同AN 之間的休眠切換..................................................................103
4.7.2 相同PDSN 下不同PCF 之間休眠切換..................................................................104
4.7.3 不同PDSN 之間休眠切換.......................................................................................106
第五章 EVDO 網(wǎng)絡(luò)安全機制...................................................................................................108
5.1 EVDO 網(wǎng)絡(luò)安全概述..........................................................................................................108
5.2 空口安全機制......................................................................................................................108
5.3 接入鑒權(quán)..............................................................................................................................109
5.3.1 基于MD5 算法的鑒權(quán)方式....................................................................................110
5.3.2 基于CAVE 算法的鑒權(quán)方式..................................................................................111
5.4 核心網(wǎng)鑒權(quán)..........................................................................................................................113
5.5 核心網(wǎng)數(shù)據(jù)保護..................................................................................................................115
第六章 EVDO QoS 機制..........................................................................................................116
6.1 引言......................................................................................................................................116
6.2 QoS 評價指標.....................................................................................................................116
6.3 QoS 服務(wù)模型.....................................................................................................................117
6.4.1 IntServ 服務(wù)模型......................................................................................................117
6.4.2 DiffServ 服務(wù)模型....................................................................................................118
6.4.3 IntServ 和DiffServ 相結(jié)合提供端到端的QoS 保證.............................................119
6.5 端到端的QoS 體系結(jié)構(gòu).....................................................................................................120
6.5.1 端到端的QoS 機制..................................................................................................120
6.5.2 IP QoS 機制..............................................................................................................121
6.5.3 承載層與傳送層QoS 機制......................................................................................121
6.6 EVDO QoS 實現(xiàn)機制.........................................................................................................122
6.6.1 EVDO QoS 簡介......................................................................................................122
6.6.2 EVDO Rel 0 的QoS 實現(xiàn)機制................................................................................123
6.6.3 EVDO Rev A 的QoS 機制......................................................................................123
6.6.3.1 前向鏈路QoS 實現(xiàn)機制...............................................................................123
6.6.3.2 反向鏈路QoS 實現(xiàn)機制...............................................................................125
第七章 EVDO 系統(tǒng)性能分析...................................................................................................126
7.1 EVDO 鏈路覆蓋分析..........................................................................................................126
7.1.1 EVDO 鏈路覆蓋影響因素.......................................................................................126
7.1.1.1 有效全向發(fā)射功率........................................................................................127
7.1.1.2 接收機靈敏度................................................................................................128
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7.1.1.3 接收天線增益與接收端損耗........................................................................129
7.1.1.4 衰落余量........................................................................................................130
7.1.1.5 軟切換增益....................................................................................................130
7.1.1.6 分集增益........................................................................................................131
7.1.1.7 地物穿透損耗................................................................................................131
7.1.2 EVDO 前向鏈路預(yù)算...............................................................................................131
7.1.3 EVDO 反向鏈路預(yù)算...............................................................................................134
7.1.4 EVDO 系統(tǒng)前反向覆蓋差異性分析.......................................................................135
7.1.5 EVDO 與CDMA2000 1x 系統(tǒng)前反向覆蓋比較....................................................137
7.2 EVDO 系統(tǒng)容量分析..........................................................................................................138
7.2.1 EVDO 系統(tǒng)容量影響因素分析...............................................................................139
7.2.2 EVDO 前向容量分析...............................................................................................139
7.2.2.1 鏈路開銷影響分析........................................................................................139
7.2.2.2 多用戶調(diào)度影響分析....................................................................................140
7.2.2.3 HARQ 影響分析...........................................................................................142
7.2.2.4 速率控制影響分析........................................................................................146
7.2.3 EVDO 反向容量分析...............................................................................................147
7.2.4 EVDO 前反向容量差異性分析...............................................................................148
7.2.5 EVDO 與CDMA2000 1x 前反向容量比較............................................................149
7.3 EVDO 鏈路覆蓋和系統(tǒng)容量前反向受限分析..................................................................150
第八章 EVDO 組網(wǎng)與混合終端操作.......................................................................................152
8.1 組網(wǎng)方式..............................................................................................................................152
8.1.1 單獨組網(wǎng)...................................................................................................................152
8.1.2 混合組網(wǎng)...................................................................................................................152
8.1.2.1 升級組網(wǎng)方案................................................................................................153
8.1.2.2 疊加組網(wǎng)方案................................................................................................154
8.2 混合終端操作......................................................................................................................156
8.2.1 混合終端設(shè)置...........................................................................................................156
8.2.2 混合終端選網(wǎng)...........................................................................................................156
8.2.2.1 在接入層面上選網(wǎng)........................................................................................156
8.2.2.2 在應(yīng)用層面上選網(wǎng)........................................................................................157
8.2.2.3 開機選網(wǎng)........................................................................................................158
8.2.3 兩網(wǎng)切換...................................................................................................................159
8.2.3.1 混合覆蓋區(qū)內(nèi)的切換....................................................................................159
8.2.3.2 混合覆蓋區(qū)邊緣的切換................................................................................164
第九章 EVDO 網(wǎng)絡(luò)規(guī)劃和優(yōu)化...............................................................................................168
9.1 CDMA 網(wǎng)絡(luò)規(guī)劃和優(yōu)化的基本功能概述.........................................................................168
9.2 CDMA 網(wǎng)絡(luò)規(guī)劃的準則/要求/流程...................................................................................168
9.2.1 CDMA 網(wǎng)絡(luò)規(guī)劃的準則..........................................................................................168
9.2.2 CDMA 網(wǎng)絡(luò)規(guī)劃的要求..........................................................................................169
9.2.2.1 合理選擇天線類型和天線掛高....................................................................169
9.2.2.2 明確覆蓋目標和覆蓋區(qū)域............................................................................170
9.2.2.3 話務(wù)量分布....................................................................................................171
9.2.2.4 地理形態(tài)特性................................................................................................171
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9.2.2.5 室內(nèi)覆蓋策略................................................................................................171