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标题: 切换事件详解 [查看完整版帖子] [打印本页]
时间: 2023-3-17 09:30
作者: 姬佳幸
标题: 切换事件详解
LTE测量事件主要有下面几种:EventA1、Event A2、Event A3、Event A4、Event A5、Event B1、Event B2。
Event A1(Serving becomes better than threshold)
:表示服务小区信号质量高于一定门限,满足此条件的事件被上报时,eNodeB停止异频/异系统测量;类似于UMTS里面的2F事件;
Event A2(Serving becomes worse than threshold)
:表示服务小区信号质量低于一定门限,满足此条件的事件被上报时,eNodeB启动异频/异系统测量;类似于UMTS里面的2D事件;
Event A3(Neighbour becomes offset better than serving)
:表示同频/异频邻区质量高于服务小区质量,满足此条件的事件被上报时,源eNodeB启动同频切换请求;一般来说是基于覆盖的切换
Event A4(Neighbour becomes better than threshold)
:表示异频邻区质量高于一定门限量,满足此条件的事件被上报时,源eNodeB启动异频切换请求;一般来说是基于负荷均衡的切换
Event A5(Serving becomes worse than threshold1 and neighbour becomes better thanthreshold2)
:表示服务小区质量低于一定门限并且邻区质量高于一定门限;类似于UMTS里的2B事件;
EventB1 (Inter RAT neighbour becomes betterthan threshold)
:表示异系统邻区质量高于一定门限,满足此条件事件被上报时,源eNodeB启动异系统切换请求;类似于UMTS里的3C事件;
EventB2 (Serving becomes worse thanthreshold1 and inter RAT neighbour becomes better than threshold2)
:表示服务小区质量低于一定门限并且异系统邻区质量高于一定门限,类似于UMTS里进行异系统切换的3A事件。
时间: 2023-3-17 09:40
作者: deepsong
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