目 录
第 1 章 概述 ....................................................................................................................................................1
1.1 干扰分类..............................................................................................................................................1
1.2 干扰排查的目的..................................................................................................................................1
1.3 干扰排查的触发条件..........................................................................................................................1
1.4 干扰的判定标准..................................................................................................................................2
1.4.1 商用前........................................................................................................................................2
1.4.2 商用后........................................................................................................................................2
第 2 章 系统被干扰情况的排查手段............................................................................................................3
2.1 通过低噪..............................................................................................................................................3
2.2 通过 RSSI ............................................................................................................................................3
2.3 通过 MRR............................................................................................................................................7
2.4 通过 DT 数据 ......................................................................................................................................8
第 3 章 系统内干扰和系统外干扰的特点及判定条件..............................................................................11
3.1 通过调节此区域干扰相关参数来判定............................................................................................11
3.2 通过关闭基站来判定........................................................................................................................11
第 4 章 系统内干扰的定位思路、常见原因及规避手段..........................................................................13
4.1 检查基站与相邻基站告警................................................................................................................13
4.2 检查上下行子帧配比........................................................................................................................14
4.3 检查功控配置....................................................................................................................................14
4.4 检查 ICIC,CCIA,CCLR 等干扰抑制算法的配置............................................................................15
4.5 检查切换配置....................................................................................................................................15
4.6 检查本小区和邻区负载....................................................................................................................15
4.7 覆盖优化............................................................................................................................................16
4.8 综合优化............................................................................................................................................16
第 5 章 系统外干扰的定位思路、常见原因及规避手段..........................................................................17
5.1 互调干扰及带外泄露........................................................................................................................17
5.2 多点定位外部干扰............................................................................................................................18
