LTE-Uu口信令流程详解汇总

LTE-Uu口信令流程详解汇总
LTE空口信令流程详解以及相关优化案例汇总

1、附着信令流程


1.1 、Attach附着信令流程

（统计时延：红色的为开始和结束信令）
|EPS MM |Attach request |
|EPS MM |Unknown(0x0734) |
|UL CCCH|rrcConnectionRequest |
|DL CCCH|rrcConnectionSetup |
|UL DCCH|rrcConnectionSetupComplete |
|DL DCCH|rrcConnectionReconfiguration |
|DL DCCH|dlInformationTransfer |
|UL DCCH|rrcConnectionReconfigurationComplete |
|EPS MM |Security protected NAS message |
|EPS MM |Authentication request |
|EPS MM |Authentication response |
|EPS MM |Unknown(0x077B) |
|UL DCCH|ulInformationTransfer