LTE系统信令流程六

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,*,LTE,系统信令流程,(,六,),Handover,切换信令流程,1. E-UTRAN(LTE),内部切换,1.1,基于,S1,的切换,1.2,基于,X2,的切换,2. RAT,之间的切换,2.1 LTE,到,3G(UTRAN),的切换,2.2 3G,到,LTE,的切换,2.3 LTE,到,2G(GERAN),的切换,2.4 2G,到,LTE,的切换,这里没有涉及,LTE,和,CDMA,的切换,切换流程的基本空口信令,Measurement report,RRC reconfiguration,RRC reconfiguration complete,要注意的是,RRC Reconfiguration,和,Reconfiguration complete,是在与不同的,eNB,交互,5.5.1.2.2,基于,S1,切换,的正常流程,Spec 23.401,Spec 23.401,5.5.1.2.3,基于,S1,切换的异常流程,(,拒绝,),Spec 23.401,5.5.1.1.2 S-GW,不变的基于,X2,切换,Spec 23.401,5.5.1.1.3 S-GW,改变的基于,X2,切换,