lte空口信令流程详解

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1、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）EPSMMAttachrequestEPSMMUnknown(0x0734)ULCCCHrrcConnectionRequestDLCCCHrrcConnectionSetupULDCCHrrcConnectionSetupCompleteDLDCCHrrcConnectionReconfigurationDLDCCHdlInformationTransferULDCCHrrcConne

2、ctionReconfigurationCompleteEPSMMSecurityprotectedNASmessageEPSMMAuthenticationrequestEPSMMAuthenticationresponseEPSMMUnknown(0x077B)ULDCCHulInformationTransferDLDCCHdlInformationTransferEPSMMSecurityprotectedNASmessageEPSMMSecuritymodecommandEPSMMSecuritymo

3、decompleteEPSMMUnknown(0x0790)ULDCCHulInformationTransferDLDCCHueCapabilityEnquiryULDCCHueCapabilityInformationDLDCCHsecurityModeCommandDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteEPSMMSecurityprotectedNASmessageEPSMMAttachacc

4、eptEPSSMActivatedefaultEPSbearercontextrequestEPSSMActivatedefaultEPSbearercontextacceptEPSMMAttachcompleteEPSMMUnknown(0x072D)ULDCCHulInformationTransferDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteAttach信令流程详解1.2、Detach去附着信令流

5、程（统计时延：红色的为开始和结束信令）EPSMMDetachrequestEPSMMUnknown(0x0734)ULDCCHulInformationTransferDLDCCHdlInformationTransferEPSMMSecurityprotectedNASmessageEPSMMDetachacceptDLDCCHrrcConnectionReleaseEPSSMPDNconnectivityrequestDetach信令流程详解2、呼叫业务信令流程2.1、UE主叫信令流程（统计时延：红色的为开

6、始和结束信令）EPSMMExtendedservicerequestULCCCHrrcConnectionRequestDLCCCHrrcConnectionSetupULDCCHrrcConnectionSetupCompleteDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLDCCHsecurityModeCommandDLDCCHrrcConnectionReconfigurationULDCCHr

7、rcConnectionReconfigurationCompleteDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteUE主叫信令流程详解2.2、UE被叫信令流程（统计时延：红色的为开始和结束信令）DLPCCHPagingEPSMMExtendedservicerequestULCCCHrrcConnectionRequestDLCCCHrrcConnectionSetupULDCCHrrcConnectio

8、nSetupCompleteDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLDCCHsecurityModeCommandDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLD