LTE切换优化指导书.docx

LTEeRAN2.2问题定位指导书切换篇2012-3-31目录TableofContents1.2.2.1.概述........................................................................................................................5基本概念.................................................................................................................5切换基本流程..........................................................................................................62.1.1.2.1.2.2.1.3.站内切换.........................................................................................................6站间切换.........................................................................................................9ANR打开时的切换........................................................................................122.2.2.3.切换测量及参数介绍.............................................................................................13异频切换...............................................................................................................152.3.1.2.3.2.2.3.3.2.3.4.异频切换算法介绍........................................................................................15GAP介绍......................................................................................................16测量事件.......................................................................................................16基本信令跟踪................................................................................................192.4.2.5.切换成功率...........................................................................................................20切换常见异常场景简介.........................................................................................202.5.1.2.5.2.2.5.3.切换过早.......................................................................................................20切换过晚.......................................................................................................22乒乓切换.......................................................................................