Question

导致RRC连接建立失败的原因主要有哪些方面

Answer 1

（一）协议重建定义(1)协议3GPP36.331定义触发重建原因包括如下几类1>upondetectingradiolinkfailure,2>uponhandoverfailure,3>uponmobilityfromE-UTRAfailure,4>uponintegritycheckfailureindicationfromlowerlayers;5>uponanRRCconnectionreconfigurationfailure(2)reconfigurationfailure定义：iftheUEisunabletocomplywith(partof)theconfigurationincludedintheRRCConnectionReconfigurationmessage:continueusingtheconfigurationusedpriortothereceptionofRRCConnectionReconfigurationmessage;ifsecurityhasnotbeenactivated:performtheactionsuponleavingRRC_CONNECTEDasspecifiedin5.3.12,withreleasecauseother;else:initiatetheconnectionre-establishmentprocedureasspecifiedin5.3.7,uponwhichtheconnectionreconfigurationprocedureends;UE在安全模式激活的状态下，如果收到了重配置消息后对于重配置消息内的信元无法匹配/兼容，则发起原因值为“reconfigurationfailure”的重建。(3)handoverfailure定义ifT304expires(handoverfailure):NOTE:FollowingT304expiryanydedicatedpreamble,ifprovidedwithintherach-ConfigDedicated,isnotavailableforusebytheUEan...