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【分享】cdma2000原理【已搜无重复】
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第一章 cdma2000 介绍........................................................................................................................5 1 概述.................................................................................................................................................5 1.1 cdma2000 的特点...........................................................................................................5 1.2 cdma2000 的标准...........................................................................................................6 1.3 cdma2000 信道命名约定................................................................................................6 1.3.1 逻辑信道命名约定.................................................................................................7 1.3.2 物理信道命名约定.................................................................................................8 1.4 cdma2000 的体系结构...................................................................................................9 2 物理层...........................................................................................................................................10 2.1 前向链路（FL）物理信道...........................................................................................11 2.1.1 FL物理信道概况..................................................................................................11 2.1.2 FL导频信道..........................................................................................................13 2.1.3 FL同步信道..........................................................................................................13 2.1.4 FL寻呼信道..........................................................................................................13 2.1.5 FL广播控制信道..................................................................................................14 2.1.6 FL快速寻呼信道..................................................................................................14 2.1.7 FL公共功率控制信道..........................................................................................16 2.1.8 FL公共指配信道..................................................................................................16 2.1.9 FL公共控制信道..................................................................................................16 2.1.10 FL专用控制信道..................................................................................................17 2.1.11 FL基本信道..........................................................................................................17 2.1.12 FL补充信道..........................................................................................................18 2.1.13 FL补充码分信道..................................................................................................18 2.2 反向链路（RL）物理信道..........................................................................................18 2.2.1 RL物理信道概况..................................................................................................18 2.2.2 RL导频信道..........................................................................................................21 2.2.3 RL接入信道..........................................................................................................22 2.2.4 RL增强接入信道..................................................................................................22 2.2.5 RL公共控制信道..................................................................................................22 2.2.6 RL专用控制信道..................................................................................................22 2.2.7 RL基本信道..........................................................................................................22 2.2.8 RL补充信道..........................................................................................................23 2.2.9 RL补充码分信道..................................................................................................23 2.3 接入模式.......................................................................................................................23 2.3.1 与IS-95A/B兼容的接入模式...............................................................................23 2.3.2 基本接入模式.......................................................................................................23 2.3.3 功率受控接入模式...............................................................................................23 2.3.4 预留接入模式.......................................................................................................23 2.3.5 指定接入模式.......................................................................................................25 3 链路层...........................................................................................................................................25 3.1 MAC子层......................................................................................................................25 3.1.1 RLP和复用子层...................................................................................................26 3.1.2 SRBP和公用信道复用子层.................................................................................27 3.2 LAC子层.......................................................................................................................27 3.2.1 LAC层内的协议子层...........................................................................................28 3.2.1.1 鉴权子层......................................................................................................28 3.2.1.2 ARQ子层......................................................................................................28 3.2.1.3 寻址子层......................................................................................................30 3.2.1.4 功用子层......................................................................................................30 3.2.1.5 分割和重装（SAR）子层...........................................................................30 3.2.2 逻辑信道...............................................................................................................30 3.2.2.1 r-csch ............................................................................................................32 3.2.2.2 f-csch ............................................................................................................32 3.2.2.3 f/r-dsch..........................................................................................................33 第 2 页 共 102 页 4 第三层（层3）.............................................................................................................................33 4.1 业务建立时的控制信令...............................................................................................34 4.1.1 业务配置（Service Configuration）....................................................................34 4.1.1.1 业务配置中的可协商参数...........................................................................34 4.1.1.2 业务配置中的不可协商参数.......................................................................35 4.1.2 业务协商（Service Negotiation） .......................................................................36 4.2 切换中的控制信令（流程） .......................................................................................36 4.2.1 软切换...................................................................................................................36 4.2.2 CDMA工作模式之间的硬切换...........................................................................39 4.2.3 CDMA到模拟系统的硬切换...............................................................................40 5 无线资源管理................................................................................................................................40 5.1 功率控制.......................................................................................................................41 5.1.1 反向功率控制.......................................................................................................42 5.1.2 前向功率控制.......................................................................................................43 5.1.3 软切换技术...........................................................................................................43 5.1.4 接纳控制...............................................................................................................44 5.2 分组调度.......................................................................................................................45 5.2.1 目的和原则...........................................................................................................45 5.2.2 调度算法...............................................................................................................46 5.2.2.1 前向调度算法介绍......................................................................................47 5.2.2.2 反向链路调度算法......................................................................................48 5.3 负荷控制.......................................................................................................................48 6 缩略语...........................................................................................................................................49 7 参考文献.......................................................................................................................................49 第二章 A口呼叫流程................................................................................................................50 1 概述...............................................................................................................................................50 2 协议设计.......................................................................................................................................52 2.1 参考模型.......................................................................................................................52 2.2 BSAP............................................................................................................................53 2.2.1 DTAP ....................................................................................................................53 2.2.2 BSMAP.................................................................................................................53 2.3 主要内容.......................................................................................................................53 [ Last edited by ccjjhh on 2009-3-27 at 11:36 ] |
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3 语音呼叫处理................................................................................................................................54 3.1 主叫流程.......................................................................................................................54 3.2 被叫流程.......................................................................................................................54 3.3 Complete Layer 3 Information ......................................................................................55 3.3.1 Protocol Discriminator ..........................................................................................56 3.3.2 CM Service Type ..................................................................................................57 3.3.3 Classmark Information Type 2..............................................................................57 3.3.4 Mobile Identity（IMSI） .....................................................................................58 3.3.5 Called Party BCD Number....................................................................................59 3.3.6 Mobile Identity（ESN） ......................................................................................59 3.3.7 Slot Cycle Index....................................................................................................59 3.3.8 Authentication Response Parameter（AUTHR） ................................................59 3.3.9 Authentication Confirmation Parameter（RANDC）..........................................60 3.3.10 Authentication Parameter COUNT.......................................................................60 3.3.11 Authentication Challenge Parameter（RAND）..................................................60 3.3.12 Service Option.......................................................................................................60 3.3.13 Voice Privacy Request ..........................................................................................61 3.3.14 Radio Environment and Resources .......................................................................61 3.3.15 Called Party ASCII Number .................................................................................61 3.3.16 Circuit Identity Code.............................................................................................61 3.3.17 Authentication Event.............................................................................................61 3.3.18 Authentication Data ..............................................................................................61 3.3.19 PACA Reorigination Indicator..............................................................................62 3.3.20 IS-2000 Mobile Capabilities .................................................................................62 3.3.21 CDMA Serving One Way Delay...........................................................................62 3.4 Paging Request ..............................................................................................................62 3.5 Paging Response............................................................................................................62 3.6 Assignment Request ......................................................................................................63 3.7 Assignment Complete ...................................................................................................63 3.8 Assignment Failure........................................................................................................64 3.9 Clear Request ................................................................................................................64 3.10 Clear Command.............................................................................................................64 3.11 Clear Complete..............................................................................................................64 3.12 Flash With Information .................................................................................................64 3.13 Flash With Information Ack..........................................................................................65 3.14 Feature Notification.......................................................................................................65 3.15 Feature Notification Ack ...............................................................................................65 4 数据业务处理................................................................................................................................66 4.1 呼叫流程.......................................................................................................................66 4.2 A11 接口有关参数说明...............................................................................................66 4.3 A11-Registration Request..............................................................................................66 4.3.1 A11 Message Type................................................................................................67 4.3.2 Flags......................................................................................................................67 4.3.3 Lifetime.................................................................................................................68 4.3.4 Home Address.......................................................................................................68 4.3.5 Home Agent ..........................................................................................................68 4.3.6 Care-of-Address ....................................................................................................68 4.3.7 Identification .........................................................................................................68 4.3.8 Session Specific Extension....................................................................................68 4.3.9 Vendor/Organization Specific Extension..............................................................68 4.3.10 Mobile-Home Authentication Extension...............................................................68 4.4 A11-Registration Reply.................................................................................................68 4.5 A11-Registration Update...............................................................................................69 4.6 A11-Registratin Acknowledge ......................................................................................69 5 参考文献.......................................................................................................................................70 第三章 CDMA网络规划....................................................................................................................71 1 什么是无线网络规划....................................................................................................................71 1.1 无线网络规划的内涵...................................................................................................71 1.1.1 无线设计目标.......................................................................................................72 1.1.2 设计方案...............................................................................................................74 1.1.3 设计内容...............................................................................................................74 1.2 CDMA规划特殊问题...................................................................................................75 1.3 规划特点和意义...........................................................................................................76 1.4 无线网络规划流程.......................................................................................................76 2 数据准备.......................................................................................................................................77 2.1 地理数据.......................................................................................................................77 2.2 业务密度分布...............................................................................................................78 3 无线电波传播和传模预测............................................................................................................78 3.1 概论...............................................................................................................................78 3.2 电波传播损耗预测模型...............................................................................................78 3.2.1 室外传播模型.......................................................................................................79 3.2.1.1 Hata模型.......................................................................................................79 3.2.1.2 CCIR模型.....................................................................................................80 3.2.1.3 COST 231-WIM模型...................................................................................80 3.2.1.4 LEE模型.......................................................................................................82 3.2.2 室内传播模型.......................................................................................................84 3.2.2.1 对数距离路径损耗模型..............................................................................85 3.2.2.2 Ericsson多重断点模型.................................................................................85 3.2.2.3 衰减因子模型..............................................................................................86 第 4 页 共 102 页 3.2.2.4 传播模型路测与校正..................................................................................86 4 链路预算.......................................................................................................................................87 4.1.1 链路预算计算方法描述.......................................................................................87 4.1.1.1 反向链路预算（话音和数据业务）...........................................................87 4.1.1.2 前向链路预算（话音业务）.......................................................................88 4.1.1.3 前向链路预算（数据业务）.......................................................................89 4.2 其他系统干扰...............................................................................................................91 4.3 系统设计与调整...........................................................................................................91 5 性能分析.......................................................................................................................................93 5.1 性能分析的必要性.......................................................................................................93 5.2 性能分析的可行性.......................................................................................................94 5.3 性能分析的预期目标...................................................................................................95 5.4 性能分析的研究方案...................................................................................................95 5.5 覆盖分析.......................................................................................................................96 5.5.1 前向覆盖...............................................................................................................96 5.5.2 反向覆盖...............................................................................................................97 5.5.3 前反向链路平衡...................................................................................................97 6 导频分配.......................................................................................................................................98 6.1 一种不正确的PN偏置分配..........................................................................................98 6.2 PN偏置规划..................................................................................................................99 6.3 导频规划策略.............................................................................................................101 7 参考文献.....................................................................................................................................102 |
2楼2009-03-27 11:35:41
