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)ULCCCHrrcConnectionRequestDLCCCHrrcConnectionSetupULDCCHrrcConnectionSetupCompleteDLDCCHrrcConnectionReconfigurationDLDCCHdlInformationTransferULDCCHrrcConnectionReconfigurationCompleteEPSMMSecuri

2、typrotectedNASmessageEPSMMAuthenticationrequestEPSMMAuthenticationresponseEPSMMUnknown(0x077B)ULDCCHulInformationTransferDLDCCHdlInformationTransferEPSMMSecurityprotectedNASmessageEPSMMSecuritymodecommandEPSMMSecuritymodecompleteEPSMMUnknown(0x0790)ULDCCHulInformationTransferDLDCCHueCapabilityEnq

3、uiryULDCCHueCapabilityInformationDLDCCHsecurityModeCommandDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteEPSMMSecurityprotectedNASmessageEPSMMAttachacceptEPSSMActivatedefaultEPSbearercontextrequestEPSSMActivatedefaultEPSbearercontextacceptEPSMMAttachcompleteEPSMMUnkno

4、wn(0x072D)ULDCCHulInformationTransferDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteAttach信令流程详解1.2、Detach去附着信令流程（统计时延：红色的为开始和结束信令）EPSMMDetachrequestEPSMMUnknown(0x0734)ULDCCHulInformationTransferDLDCCHdlInformationTransferEPSMMSecurityprotectedNASmessageEPSMMDetachac

5、ceptDLDCCHrrcConnectionReleaseEPSSMPDNconnectivityrequestDetach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：红色的为开始和结束信令）EPSMMExtendedservicerequestULCCCHrrcConnectionRequestDLCCCHrrcConnectionSetupULDCCHrrcConnectionSetupCompleteDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLD

6、CCHsecurityModeCommandDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteUE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）DLPCCHPagingEPSMMExtendedservicerequestULCCCHrrcConnectionRequestDLCCCHrrcConnectio

7、nSetupULDCCHrrcConnectionSetupCompleteDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLDCCHsecurityModeCommandDLDCCHrrcConnectionReconfigurationULDCCHrrcConnectionReconfigurationCompleteDLD