GSMBSS无线性能KPI分析手册（立即指配成功率）内部公开目录1立即指配成功基本原理介绍......................................................................................................71.1立即指配成功率定义...........................................................................................................71.2信令流程及统计点介绍.......................................................................................................81.3问题现象描述.....................................................................................................................82影响立即指配成功率相关因素分析...........................................................................................92.1信令面分析影响因素...........................................................................................................92.2从KPI定义分析影响因素...................................................................................................102.3影响因素详细分析............................................................................................................102.3.1设备故障因素..............................................................................................................102.3.2无线空口因素..............................................................................................................102.3.3SDCCH拥塞因素........................................................................................................112.3.4终端因素.....................................................................................................................113立即指配成功率问题分析方法................................................................................................113.1立即指配成功率低问题分析流程......................................................................................113.2SDCCH立即指配成功率优化方法....................................................................................123.2.1设备故障.....................................................................................................................133.2.2无线空口问题..............................................................................................................133.2.3系统容量（拥塞）分析...............................................................................................163.2.4终端问题分析..............................................................................................................194测试方法.................................................................................................................................215立即指配成功率优化案例.......................................................................................................215.1案例1：LAC号配置错误引起SDCCH拥塞导致立即指配成功率下降................................215.2案例2：大量突发位置更新引起SDCCH拥塞....................................................................225.3案例3：RACH最小接入电平设置为0导致小区指配成功率指标低.......................................225.4案例4：终端问题导致个别小区立即指配成功率低...........................................................236需要获取的现场信息..............................................................................................................25图12008-07-10图2版权所有，侵权必究图3第1页,共28页GSMBSS无线性...
