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TD SCDMA网络优化指导手册【一份相当实用的专业资料,绝版经典】.pdf

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TD SCDMA网络优化指导手册【一份相当实用的专业资料,绝版经典】.pdf

ITDSCDMA网络优化网络优化网络优化网络优化II前言为贯彻中国移动TD网络工作指导原则,落实中国移动TDSCDMA二期的工程优化工作要求,山东移动网络部在中国移动TDSCDMA网络二期工程实施期间网络优化总体指导原则基础上,结合一期工程优化经验,组织编写了山东移动TDSCDMA网络优化指导手册(第一册)。全文整体阐述了TD网络优化基本原则与策略介绍了传播模型与规划仿真工具的使用,详细描述了单站、分簇、区域优化工作流程以及频率、扰码等关键参数的规划、优化方法,对覆盖、导频、切换、接入、掉话等专题进行了重点介绍,分析造成这些问题的原因,给出解决措施,并提供了工程经验参数和相关案例对于各种场景的网络优化通过案例进行分析说明,全册编写过程中济南、临沂、烟台分公司的积极参与进一步提升了手册实用性。随着TD技术不断发展和TD工作迅速开展,下一步省公司将继续组织全省完成手册后续内容的编写与完善,加强对全省TD优化工作的指导,推动全省TD网络优化工作开展。III目录1TD网络规划概述........................................................................................................................................................11.1TDSCDMA组网策略..........................................................................................................................................11.2TDSCDMA无线网络规划思路........................................................................................................................11.2.1规划步骤....................................................................................................................................................21.2.2规划思路....................................................................................................................................................31.2.3无线网络规划原则..................................................................................................................................42需求分析......................................................................................................................................................................62.1区域划分.............................................................................................................................................................62.1.1按无线传播环境分类.............................................................................................................................62.1.1.1密集城区..................................................................................................................................................72.1.1.2一般城区..................................................................................................................................................72.1.1.3郊区..........................................................................................................................................................82.1.1.4农村..........................................................................................................................................................82.1.1.5交通干道..................................................................................................................................................92.1.1.6山区..........................................................................................................................................................92.1.1.7海域........................................................................................................................................................102.1.2按业务分类.............................................................................................................................................102.1.3小结...........................................................................................................................................................112.23G用户预测及话务模型..............................................................................................................................122.2.13G用户预测方法.......................................................................................................................................122.2.23G话务模型................................................................................................................................................122.2.2.1语音业务模型........................................................................................................................................132.2.2.2数据业务模型........................................................................................................................................132.3现网资源...........................................................................................................................................................142.3.1现网统计.................................................................................................................................................142.3.1.1话务提取................................................................................................................................................142.3.1.2话务处理................................................................................................................................................152.3.1.3话务分布图............................................................................................................................................152.3.1.4现网资源................................................................................................................................................162.3.1.5基站技术条件........................................................................................................................................162.3.1.6机房条件................................................................................................................................................162.3.1.7频率条件................................................................................................................................................162.3.1.8无线环境勘查........................................................................................................................................172.4网络指标要求..................................................................................................................................................172.4.1覆盖目标.................................................................................................................................................172.4.2服务质量.................................................................................................................................................183传播模型及校正.......................................................................................................................................................183.1传播模型...........................................................................................................................................................183.1.1概述..........................................................................................................................................................183.1.2常见传播模型.........................................................................................................................................183.1.2.1自由空间传播模型................................................................................................................................193.1.2.2COST231Hata模型.............................................................................................................................193.1.2.3标准宏小区模型....................................................................................................................................193.2传播模型校正..................................................................................................................................................204无线规模估算...........................................................................................................................................................21IV4.1概述....................................................................................................................................................................214.2覆盖规模估算..................................................................................................................................................224.2.1链路预算.................................................................................................................................................224.2.2小区半径.................................................................................................................................................234.2.3基站数量.................................................................................................................................................234.3容量规模估算..................................................................................................................................................235网络拓扑结构设计..................................................................................................................................................246无线网络勘察...........................................................................................................................................................256.1站点选择原则与思路.....................................................................................................................................256.1.1原则..........................................................................................................................................................256.1.2网络不同发展阶段对站址要求.........................................................................................................276.1.3不同覆盖区域对站址的要求..............................................................................................................276.1.3.1密集市区选点........................................................................................................................................286.1.3.2一般市区选点........................................................................................................................................296.1.3.3郊区乡镇选点........................................................................................................................................296.1.3.4乡村选点................................................................................................................................................306.1.3.5山区选点................................................................................................................................................316.1.3.6道路选点................................................................................................................................................326.1.3.7海岸与水路选点....................................................................................................................................326.1.4站址考虑的主要因素和要求..............................................................................................................326.1.4.1站址要求................................................................................................................................................326.1.4.2机房空间................................................................................................................................................336.1.4.3机房温度................................................................................................................................................336.1.4.4机房承重................................................................................................................................................336.1.4.5机房用电................................................................................................................................................346.1.4.6天线挂高................................................................................................................................................346.1.4.7天线安装................................................................................................................................................346.1.4.8小区方向................................................................................................................................................356.1.4.9基站容量................................................................................................................................................366.2TD/2G共址建设...............................................................................................................................................367无线网络规划仿真..................................................................................................................................................397.1仿真基本流程..................................................................................................................................................397.2基本输入条件..................................................................................................................................................407.3仿真结果分析..................................................................................................................................................417.4百林软件仿真流程.........................................................................................................................................417.4.1创建新工程.............................................................................................................................................417.4.2导入地图.................................................................................................................................................427.4.3地图投影设置.........................................................................................................................................437.4.4Clutter参数设置........................................................................................................................................447.4.5导入多边形.............................................................................................................................................447.4.6管理传播模型.........................................................................................................................................457.4.7编辑天线库.............................................................................................................................................467.4.8编辑系列化基站....................................................................................................................................477.4.9导入小区.................................................................................................................................................487.4.10配置传播模型.........................................................................................................................................507.4.11配置天线.................................................................................................................................................517.4.12频率规划.................................................................................................................................................517.4.13编辑UE类..............................................................................................................................................537.4.14编辑承载参数.........................................................................................................................................54V7.4.15生成话务图.............................................................................................................................................557.4.16覆盖仿真__栅格分析...........................................................................................................................607.4.17容量仿真__系统仿真...........................................................................................................................637.4.18业务信道仿真.........................................................................................................................................648无线参数规划...........................................................................................................................................................668.1频率、扰码规划概述.....................................................................................................................................668.2频点规划原理..................................................................................................................................................678.2.1干扰对移动网络的影响.......................................................................................................................678.2.2频率复用.................................................................................................................................................688.2.2.1簇和频率复用因子................................................................................................................................688.2.2.2频率复用距离........................................................................................................................................688.2.2.3同频复用比............................................................................................................................................708.2.3频率规划的定义和方法.......................................................................................................................708.2.3.1基于扇区方位角的三频点规划............................................................................................................708.2.3.2基于邻区的频点规划............................................................................................................................718.2.3.3频率规划算法实现................................................................................................................................718.3TDSCDMA系统码资源及原理......................................................................................................................748.3.1TDSCDMA系统的码组配置.................................................................................................................748.3.2扰码..........................................................................................................................................................758.3.3符合扩频码的生成原理.......................................................................................................................758.3.3.1码复值化................................................................................................................................................758.3.4码规划的基本准则................................................................................................................................778.3.4.1扰码规划原则........................................................................................................................................788.3.4.2扰码规划优先原则................................................................................................................................788.3.4.3扰码规划码字复用原则........................................................................................................................788.3.4.4扰码规划结果检测................................................................................................................................789TDSCDMA室内覆盖.................................................................................................................................................799.1室内覆盖策略和原则.....................................................................................................................................799.1.1室内覆盖的必要性................................................................................................................................799.1.2室内覆盖策略.........................................................................................................................................809.1.3室内覆盖原则.........................................................................................................................................809.2室内覆盖解决方案.........................................................................................................................................819.2.1BBURRU分布系统...............................................................................................................................829.2.1.1解决方案介绍........................................................................................................................................829.2.1.2方案特点................................................................................................................................................839.2.1.3小结........................................................................................................................................................839.2.2各种场景解决方案................................................................................................................................849.2.2.1兼顾大楼的室内覆盖和大楼附近区域的室外覆盖............................................................................849.2.2.2兼顾大楼的室内覆盖和附近区域的补盲覆盖....................................................................................859.2.2.3会展中心,体育馆的室内覆盖............................................................................................................859.2.2.4超大型建筑(有机房)的室内覆盖....................................................................................................859.2.2.5大型建筑群(其中一个有机房)的室内覆盖....................................................................................869.2.2.6中等规模建筑的室内覆盖....................................................................................................................879.2.2.7小规模建筑群的室内覆盖....................................................................................................................8710单站优化阶段......................................................................................................................................................8810.12/3G工作..........................................................................................................................................................8810.1.1TD到2G重选流程...............................................................................................................................8810.1.2TD到2G重选策略...............................................................................................................................8910.1.3TD到2G重选参数设置......................................................................................................................89VI10.1.42G到TD重选策略...............................................................................................................................9011分簇优化阶段......................................................................................................................................................9011.1PCCPCH弱覆盖的优化................................................................................................................................9111.1.1原因分析.................................................................................................................................................9111.1.2解决措施.................................................................................................................................................9111.2孤岛效应的优化.............................................................................................................................................9211.2.1原因分析.................................................................................................................................................9211.2.2解决措施.................................................................................................................................................9211.3PCCPCH越区覆盖的优化..........................................................................................................................9311.3.1原因分析.................................................................................................................................................9311.3.2解决措施.................................................................................................................................................9311.4切换区域覆盖优化.........................................................................................................................................9411.4.1原因分析.................................................................................................................................................9411.4.2解决措施.................................................................................................................................................9411.5切换区域覆盖优化.........................................................................................................................................9511.5.1原因分析.................................................................................................................................................9611.5.2解决措施.................................................................................................................................................9612分区优化阶段......................................................................................................................................................9712.1导频污染专题优化.........................................................................................................................................9712.1.1导频污染判断.........................................................................................................................................9812.1.2产生原因分析.........................................................................................................................................9812.1.3现网导频污染问题优化.......................................................................................................................9912.1.4优化方法总结......................................................................................................................................10112.2切换失败率过高...........................................................................................................................................10112.2.1硬件故障导致切换异常.....................................................................................................................10112.2.2同频同扰码小区越区覆盖导致切换异常.....................................................................................10112.2.3越区孤岛切换问题.............................................................................................................................10212.2.4目标邻小区负荷过高导致切换失败..............................................................................................10312.2.5目标小区上行同步失败导致切换失败..........................................................................................10312.2.6源小区下行干扰严重导致切换失败..............................................................................................10412.2.7无线参数设置不合理导致切换不及时..........................................................................................10512.3由覆盖引起的掉话.......................................................................................................................................10612.3.1原因分析...............................................................................................................................................10612.3.2解决措施...............................................................................................................................................10612.4由于切换引起的掉话..................................................................................................................................10712.4.1原因分析...............................................................................................................................................10712.4.2解决措施...............................................................................................................................................10912.5接入问题专题优化.......................................................................................................................................11012.5.1原因分析................................................................................................................................................11012.5.2解决措施................................................................................................................................................11112.5.3路测数据分析流程..............................................................................................................................11212.5.4话统指标分析流程..............................................................................................................................11312.5.5寻呼问题分析流程..............................................................................................................................11312.5.6RRC建立问题分析流程....................................................................................................................11412.6由于干扰引起的掉话...................................................................................................................................11412.6.1原因分析................................................................................................................................................11412.6.2解决措施................................................................................................................................................115VII13TDSCDMAIUB带宽计算......................................................................................................................................11513.1概述..................................................................................................................................................................11513.2话务模型及要求...........................................................................................................................................11513.3R4的IUB带宽分析......................................................................................................................................11613.4TDSCDMAR5的IUB带宽分析..............................................................................................................11713.4.1单时隙空口码道峰值.........................................................................................................................11813.4.2小区空口HSDPA速率.......................................................................................................................11813.4.3小区IubHSDPA速率.........................................................................................................................11813.4.4小区Iub业务速率...............................................................................................................................119

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