LTE关键KPI及方法题稿.pptx

LTE关键KPI介绍及分析方法 PDC SITE CD 余游江 目录 接入性指标 保持性指标 移动性指标 KPI分析案例 Moshell简单指令介绍 接入性指标 指标解释 无线接通率 KPI ? pmRrcConnEstabSucc: The total number of successful RRC Connection Establishments. pmRrcConnEstabAtt: The total number of RRC Connection Request attempts. pmRrcConnEstabAttReatt: The total number of RRC Connection Request attempts that are considered as re-attempts. pmErabEstabSuccInit: The total number of successful initial E-RAB Establishments. pmErabEstabSuccAdded: The total number of successfully added E-RABs. pmErabEstabAttInit: The total number of initial E-RAB Establishment attempts. pmErabEstabAttAdded: The total number of added E-RAB Establishment attempts. 流程开始： 尝试：RRC Connection Request 流程结束： 成功：RRC Connection Setup 失败：RRC Connection Request Rejected RRC建立流程（1） RRC建立流程（2） ERAB建立流程 流程开始： 尝试 ：S1建立成功 流程结束： 成功： RBS向MME发送Initial Context Setup Response RRC及ERAB 建立失败原因对应Counter 影响接入性能的告警 接入问题处理流程 保持性指标 指标解释 E-RAB掉线率 SARR（Session Abnormal Release Rate ） KPI pmErabRelAbnormalEnbAct: The total number of abnormal E-RAB Releases per cell initiated by the eNB and that there was data in either the UL or DL buffer (i.e. active). pmErabRelAbnormalMmeAct: The total number of E-RAB Releases initiated by the MME considered as abnormal. pmErabRelAbnormalEnb: The total number of abnormal E-RAB Releases triggered by eNB per cell. pmErabRelNormalEnb: The total number of normal E-RAB Releases triggered by eNB per cell. pmErabRelMme: The total number of E-RAB Releases per cell initiated by the MME excluding successful handover. MME发起掉话 在Buffer中有数据的非正常释放，才是用户感知的掉话 ENB发起掉话 在Buffer中有数据的非正常释放，才是用户感知的掉话 掉线原因对应Counter 影响掉线指标的相关告警 掉线处理流程 移动性指标 指标详解 系统内切换成功率 HOSR（Intra-LTE Handover Success Rate ） KPI 切换流程—切换准备 切换流程—切换执行 切换相关事件 切换相关参数 切换分析流程 KPI分析案例 案例详情： CDF1046A小区的同频切换出成功率只有80%左右，通过后台切换指标查询发现CDF1046A小区主要和CDF2255丽华客栈A小区 、 CDF1002都江堰荷花池市场C小区， CDF4032百伦广场B、C小区切换成功率低。 ? ? 切换尝试 切换成功 切换成功率 原小区 目标小区 处理前 处理后 处理前 处理后 处理前 处理后 CDF104631 CDF225531 7602 8519 6635 8507 87.28% 99.85% CDF104631 CDF100233 4