【資料名稱】：EVDO系統(tǒng)詳解

【資料作者】：wangfuping

【資料日期】：20090908

【資料語言】：中文

【資料格式】：DOC

【資料目錄和簡介】：

非常詳細的EVDO資料。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...................................................................................................................4
1.3.4 HARQ ...........................................................................................................................4
1.3.5 速率控制.......................................................................................................................5
1.4 EVDO 網(wǎng)絡結構......................................................................................................................6
1.4.1 網(wǎng)絡構成及其基本功能...............................................................................................6
1.4.2 網(wǎng)絡接口協(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 前向信道的時隙結構......................................................................................16
2.2.1.3 前向信道的標識..............................................................................................16
2.2.1.4 前向信道的物理結構......................................................................................19
2.2.1.5 前向業(yè)務/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 接入信道物理結構..........................................................................................26
2.2.2.3 反向業(yè)務信道物理結構..................................................................................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 接入探針的結構..............................................................................................39
2.3.4.3 接入探針序列的結構......................................................................................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 層主要消息及其關鍵參數(shù)...................................................42
2.3.5 前向業(yè)務信道MAC...................................................................................................43
2.3.5.1 前向業(yè)務信道MAC 層數(shù)據(jù)封裝...................................................................43
2.3.5.2 前向業(yè)務信道MAC 協(xié)議狀態(tài)轉移流程.......................................................44
2.3.6 反向業(yè)務信道MAC...................................................................................................46
2.3.6.1 反向業(yè)務信道MAC 層數(shù)據(jù)封裝...................................................................46
2.3.6.2 反向業(yè)務信道速率控制..................................................................................47
2.3.6.3 反向鏈路靜默..................................................................................................49
2.3.6.4 反向業(yè)務信道長碼..........................................................................................49
2.3.6.5 反向業(yè)務信道MAC 層主要消息及其關鍵參數(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.....................................................................................................................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 應用層...................................................................................................................................64
2.8.1 缺省信令應用.............................................................................................................64
2.8.1.1 信令網(wǎng)絡協(xié)議..................................................................................................64
2.8.1.2 信令鏈路協(xié)議..................................................................................................65
2.8.2 缺省分組應用.............................................................................................................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 空中接口關鍵技術....................................................................................................71
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2.9.1 自適應調(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
第四章 EVDO 數(shù)據(jù)呼叫流程.....................................................................................................90
第五章 EVDO 網(wǎng)絡安全機制...................................................................................................108
第六章 EVDO QoS 機制..........................................................................................................116
6.1 引言.....................................................................................................................................116
6.2 QoS 評價指標.....................................................................................................................116
6.3 QoS 服務模型.....................................................................................................................117
6.4.1 IntServ 服務模型......................................................................................................117
6.4.2 DiffServ 服務模型....................................................................................................118
6.4.3 IntServ 和DiffServ 相結合提供端到端的QoS 保證.............................................119
6.5 端到端的QoS 體系結構.....................................................................................................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 前向鏈路預算...............................................................................................131
7.1.3 EVDO 反向鏈路預算...............................................................................................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)絡規(guī)劃和優(yōu)化...............................................................................................168
9.1 CDMA 網(wǎng)絡規(guī)劃和優(yōu)化的基本功能概述.........................................................................168
9.2 CDMA 網(wǎng)絡規(guī)劃的準則/要求/流程...................................................................................168
9.2.1 CDMA 網(wǎng)絡規(guī)劃的準則..........................................................................................168
9.2.2 CDMA 網(wǎng)絡規(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
9.2.3 CDMA 網(wǎng)絡規(guī)劃的流程..........................................................................................172
9.2.3.1 設計準備........................................................................................................172
9.2.3.2 初步設計........................................................................................................172
9.2.3.3 最終設計........................................................................................................173
9.3 CDMA2000 1x 網(wǎng)絡規(guī)劃....................................................................................................173
9.3.1 覆蓋規(guī)劃...................................................................................................................173
9.3.2 PN 規(guī)劃.....................................................................................................................174
9.3.3 切換規(guī)劃...................................................................................................................175
9.3.4 功率規(guī)劃...................................................................................................................176
9.3.5 登記區(qū)域規(guī)劃...........................................................................................................176
9.3.6 其他特點...................................................................................................................177
9.4 混合組網(wǎng)時的EVDO 網(wǎng)絡規(guī)劃.........................................................................................177
9.4.1 EVDO 網(wǎng)絡規(guī)劃的技術特點...................................................................................177
9.4.2 EVDO 網(wǎng)絡規(guī)劃的特殊要求...................................................................................178
9.4.3 影響EVDO 網(wǎng)絡規(guī)劃的特殊因素..........................................................................179
9.4.3.1 話務模型對EVDO 網(wǎng)絡規(guī)劃的影響...........................................................179
9.4.3.2 技術發(fā)展對EVDO 網(wǎng)絡規(guī)劃的影響...........................................................179
9.5 混合組網(wǎng)時的EVDO 網(wǎng)絡優(yōu)化.........................................................................................179
9.5.1 EVDO 網(wǎng)絡優(yōu)化的必要性.......................................................................................179
9.5.2 EVDO 網(wǎng)絡優(yōu)化的基本準則...................................................................................180
9.5.3 EVDO 網(wǎng)絡性能的評價指標...................................................................................181
9.5.3.1 覆蓋評價........................................................................................................181
9.5.3.2 容量評價........................................................................................................181
9.5.4 EVDO 網(wǎng)絡優(yōu)化的方法和流程...............................................................................182
9.5.4.1 優(yōu)化準備........................................................................................................182
9.5.4.2 優(yōu)化條件........................................................................................................183
9.5.4.3 基于路測的優(yōu)化............................................................................................183
9.5.4.4 基于話務統(tǒng)計的優(yōu)化....................................................................................185
9.5.5 EVDO 優(yōu)化流程.......................................................................................................187
9.6 EVDO 網(wǎng)絡關鍵性能指標分析..........................................................................................188
9.6.1 數(shù)據(jù)吞吐量影響因素分析.......................................................................................188
9.6.1.1 無線覆蓋弱....................................................................................................189
9.6.1.2 導頻污染........................................................................................................190
9.6.1.3 鄰區(qū)設計不合理............................................................................................191
9.6.1.4 PN 設計不合理..............................................................................................192
9.6.1.5 搜索窗設計不合理........................................................................................193
9.6.1.6 其它因素........................................................................................................193
9.6.2 數(shù)據(jù)呼叫建立成功率和掉話率影響因素分析.......................................................194
9.6.2.1 反向鏈路過載................................................................................................195
9.6.2.2 最大連接數(shù)限制............................................................................................196
9.6.2.3 接入鑒權失敗................................................................................................196
9.6.3 切換性能分析...........................................................................................................197
9.6.3.1 空閑切換........................................................................................................197
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9.6.3.2 虛擬軟切換....................................................................................................197
9.6.3.3 硬切換............................................................................................................197
第十章 EVDO Rel A 介紹........................................................................................................199