LTE关键信令流程

Ping信令流程：

DETACH

DetachRequest (MO) RRCConnectionRequest RRCConnectionSetup RRCConnectionSetupComplete DLInformationTransfer AuthenticationRequest AuthenticationResponse ULInformationTransfer DLInformationTransfer RRCConnectionRelease

DetachAccept(MO)

ATTACH流程:

AttachRequest

RRCConnectionRequest RRCConnectionSetup RRCConnectionSetupComplete UECaabilityEnquiry UECapabilityInformation RRCSecurityModeCommand RRCSecurityModeComplete RRCConnectionReconfiguration RRCConnectionReconfigurationComplete AttachAccept ActivateDefaultEPSBearerContextAccept ActivateDefaultEPSBearerContextRequest AttachComplete