网络性能KPI（质差小区）优化手册目录1质量定义说明......................................................................................................................................31.1质量含义...............................................................................................................................31.2公式.......................................................................................................................................31.3质差小区定义........................................................................................................................32影响质量差的因素............................................................................................................................32.1硬件故障...............................................................................................................................42.2传输问题...............................................................................................................................42.3参数设置问题........................................................................................................................42.4网内外干扰............................................................................................................................52.5覆盖问题...............................................................................................................................52.6天馈问题...............................................................................................................................52.7上下行不平衡........................................................................................................................62.8直放站问题............................................................................................................................63质差小区分析和优化方法................................................................................................................63.1分析流程图............................................................................................................................63.2定位及优化方法说明............................................................................................................84质差小区优化案例............................................................................................................................84.1案例一：载频异常吊死导致上下行链路不平衡和下行接收质量差................................84.2案例二：由天馈驻波引起的下行质量差............................................................................94.3案例三：由TRX硬件隐行故障引起的上行质量差.........................................................104.4案例四：由射频跳频引起的质量差问题..........................................................................104.5案例五：覆盖过远（TA值过大）导致下行质差............................................................124.6案例六：上下行不平衡引起的质量差问题......................................................................144.7案例七：频点干扰导致下行质量差问题..........................................................................154.8案例八：由于分集接收通道故障引起上行质量差..........................................................154.9案例九：频点干扰引起质差问题.....................................................
