切换优化-SYQ

珠海移动无线网络规划与优化专案服务每周报告（第一周）1(35)Uppgjord(ävenfaktaansvarigomannan)-Prepared(alsosubjectresponsibleifother)Nr-No.DEC/DL/PSN宋永清Dokansv/Godk-Docrespons/ApprovedKontr-CheckedDatum-DateRevFileGUC/P/N程勇;严富南2003-10-20A广东移动公司珠海移动分公司无线网络规划与优化专案服务工作周报告第一周(10月13日-10月17日)切换成功率优化珠海移动无线网络规划与优化专案服务每周报告（第一周）2(35)Uppgjord(ävenfaktaansvarigomannan)-Prepared(alsosubjectresponsibleifother)Nr-No.DEC/DL/PSN宋永清Dokansv/Godk-Docrespons/ApprovedKontr-CheckedDatum-DateRevFileGUC/P/N程勇;严富南2003-10-20A目录：1本周工作概述....................................................................................................................................32下周工作计划....................................................................................................................................33切换统计相关计数器触发原理........................................................................................................33.1小区间切换的度量....................................................................................................................33.2小区间指派切换的度量............................................................................................................73.3小区间切换原因的度量............................................................................................................83.4成功的切换再次返回原小区的度量......................................................................................104切换丢失与掉话的对应关系..........................................................................................................114.1成功的BSC内部小区间切换..................................................................................................114.2BSC内部小区间切换返回.......................................................................................................124.3BSC内部小区间切换T3103B1超时掉话...............................................................................134.4BSC内部小区间切换T3103B2超时掉话...............................................................................144.5验证切换丢失与MSLOST掉话之关系..................................................................................165切换性能的统计方法说明..............................................................................................................226乒乓切换的产生原因......................................................................................................................236.1可以产生影响的相关参数：..................................................................................................236.2多个小区重叠覆盖..................................................................................................................236.3小区间边界位置的选择..........................................................................................................246.4外部的相邻关系相互不匹配..................................................................................................246.5外部小区定义LOCATING参数不匹配....................................................................................246.6设置LOCATING参数鼓励切换的同时可能增加乒乓切换....................................................256.7三角切换..................................................................................................................................256.8紧急切换的门限设置不宜太低..............................................................................................296.9紧急切换的惩罚值设得过小、时间过短..............................................................................296.10小区负荷分担参数设置激烈..............................................................................................296.11HCS参数设置不佳...............................................................................................................307乒乓切换的影响..............................................................................................................................318切换返回惩罚时长的修改..............................................................................................................329切换成功率低的小区的修改..........................................................................................................34珠海移动无线网络规划与优化专案服务每周报告（第一周）3(35)Uppgjord(ävenfaktaansvarigomannan)-Prepared(alsosubjectresponsibleifother)Nr-No.DEC/DL/PSN宋永清Dokansv/Godk-Docrespons/ApprovedKontr-CheckedDatum-DateRevFileGUC/P/N程勇;严富南2003-10-20A1本周工作概述珠海移动分公司的本地网规划与优化服务切换研究的本周的主要工作是:阐述与切换统计相关的计数器的触发原理；解释切换丢失与掉话的对应关系；阐述统计切换性能的公式及方法；阐述乒乓切换的产生原因；阐述乒乓切换对网络性能的影响；阐述乒乓切换的解决方法；对E1、B2局作切换相关参数检查；对全局性切换参数进行优化；对B2局内切换差的小区作优化。2下周工作计划珠海移动分公司的本地网规划与优化服务切换研究的下周的工作计划主要内容是:优化两局切换性能差的小区，提高切换成功率；对选定的存在乒乓切换的小区进行优化；阐述紧急切换相关问题；对选定的小区作紧急切换测试修改；下面为本周的详细工作分析内容及结果。3切换统计相关计数器触发原理3.1小区间切换的度量切换请求数（HOVERCNT）这个计数器属于对象类型NCELLREL和NECELLREL。珠海移动无线网络规划与优化专案服务每周报告（第一周）4(35)Uppgjord(ävenfaktaansvarigomannan)-Prepared(alsosubjectresponsibleifother)Nr-No.DEC/DL/PSN宋永清Dokansv/Godk-Docrespons/ApprovedKontr-CheckedDatum-DateRevFileGUC/P/N程勇;严富南2003-10-20A向邻小区的切换请求数(HOVERCNT)在正常的小区间切换和指派到其它小区的过程中，当BSC向MS发送HANDOVERCOMMAND时累加。因此，其中包括指派到其他小区的请求数(HOASBCLorHOASWCL)中成功地产生切换命令的那一部分。计数器:(HOVERCNT)触发信息:HANDOVERCOMMAND(totheMS)例如：正常的切换过程中HOVERCNT的触发情况。HOTOKCL(1B:8F)TFCALLS(B0)HOVERCNT(95)TFMSESTB(25)HOVERSUC(1B:97)*在原小区累加*在目标小区中累加服务小区拥塞指派到差小区过程中HOVE