TOP小区分析思路(自己整理)
目录
TOP小区分析思路(自己整理) ........................................................................................... 1 1、掉线率 ................................................................................................................................. 1 1.1 指标定义 ....................................................................................................................... 1 1.2 指标分析及统计点介绍 ............................................................................................... 2 1.3 TOP小区分析流程 ........................................................................................................ 4 2、无线接通率 ......................................................................................................................... 7 2.1 指标定义 ....................................................................................................................... 7 2.2 指标分析及统计点介绍 ............................................................................................... 7 2.3 TOP小区提取及分析流程 .......................................................................................... 10 3、切换成功率率 ................................................................................................................... 13 3.1 指标定义 ..................................................................................................................... 13 3.2 指标分析及统计点介绍 ............................................................................................. 14 3.2.1 核心网原因导致切换出准备失败 ....................................................................... 14 3.2.2 目标小区无响应导致切换出准备失败 ............................................................... 15 3.2.3 目标小区回复切换准备失败消息导致切换出准备失败 ................................... 17 3.2.4 eNodeB间切换出取消 .......................................................................................... 18 3.3 TOP小区分析流程 ...................................................................................................... 19
1、掉线率
1.1 指标定义
无线掉线率=(eNodeB发起的S1 RESET导致的UE Context释放次数+UE Context异常释放次数)/UE Context建立成功总次数*100%。
1.2 指标分析及统计点介绍 ? UE Context异常释放次数
测量点:如图1中A点所示,当eNodeB向MME发送UE CONTEXT RELEASE REQUEST消息,会释放UE的所有E-RAB。当释放原因不为“Normal Release”,“Detach”,“User Inactivity”,“CS Fallback triggered”,“UE Not Available for PS Service”,“Inter-RAT Redirection”,“Time Critical Handover”,“Handover Cancelled”时,测量指标L.UECNTX.AbnormRel加1。 ? eNodeB发起的S1 RESET导致的UE Context释放次数
测量点:如图2中A点所示,当eNodeB向MME发送S1 RESET消息时,根据包含的上下文个数,指标L.UECNTX.Rel.S1Reset.eNodeB进行累加。 ? UE Context建立成功总次数