LTE空口信令流程汇总.docx
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LTE空口信令流程汇总
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)
EPSMM
Attachrequest
EPSMM
Unknown(0x0734)
ULCCCH
rrcConnectionRequest
DLCCCH
rrcConnectionSetup
ULDCCH
rrcConnectionSetupComplete
DLDCCH
rrcConnectionReconfiguration
DLDCCH
dlInformationTransfer
ULDCCH
rrcConnectionReconfigurationComplete
EPSMM
SecurityprotectedNASmessage
EPSMM
Authenticationrequest
EPSMM
Authenticationresponse
EPSMM
Unknown(0x077B)
ULDCCH
ulInformationTransfer
DLDCCH
dlInformationTransfer
EPSMM
SecurityprotectedNASmessage
EPSMM
Securitymodecommand
EPSMM
Securitymodecomplete
EPSMM
Unknown(0x0790)
ULDCCH
ulInformationTransfer
DLDCCH
ueCapabilityEnquiry
ULDCCH
ueCapabilityInformation
DLDCCH
securityModeCommand
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
EPSMM
SecurityprotectedNASmessage
EPSMM
Attachaccept
EPSSM
ActivatedefaultEPSbearercontextrequest
EPSSM
ActivatedefaultEPSbearercontextaccept
EPSMM
Attachcomplete
EPSMM
Unknown(0x072D)
ULDCCH
ulInformationTransfer
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
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)
EPSMM
Detachrequest
EPSMM
Unknown(0x0734)
ULDCCH
ulInformationTransfer
DLDCCH
dlInformationTransfer
EPSMM
SecurityprotectedNASmessage
EPSMM
Detachaccept
DLDCCH
rrcConnectionRelease
EPSSM
PDNconnectivityrequest
1.3、前台测试中Detach&Attach信令流程
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)
EPSMM
Extendedservicerequest
ULCCCH
rrcConnectionRequest
DLCCCH
rrcConnectionSetup
ULDCCH
rrcConnectionSetupComplete
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLDCCH
securityModeCommand
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
2.2、UE被叫信令流程
(统计时延:
红色的为开始和结束信令)
DLPCCH
Paging
EPSMM
Extendedservicerequest
ULCCCH
rrcConnectionRequest
DLCCCH
rrcConnectionSetup
ULDCCH
rrcConnectionSetupComplete
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLDCCH
securityModeCommand
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
2.3、前台测试中UE主叫、切换L3信令流程
2.4、后台软件中掉线、接入、RRC连接的L3信令与对应的Event事件
3、重选与切换信令流程
3.1、小区重选信令流程
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformation
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformation
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformationBlockType1
3.2、基站内同频切换信令流程
(统计时延:
红色的为开始和结束信令)
ULDCCH
measurementReport
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformationBlockType1
DLBCCH:
DLSCH
systemInformation
3.3、基站间同频切换信令流程
(统计时延:
红色的为开始和结束信令)
ULDCCH
measurementReport
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
DLBCCH:
DLSCH
systemInformationBlockType1
DLDCCH
rrcConnectionReconfiguration
ULDCCH
rrcConnectionReconfigurationComplete
4、跟踪区域更新信令流程
4.1、新小区所属跟踪区域不在终端跟踪区域列表中信令流程
4.2、周期性跟踪区域更新信令流程
4.2、ENODEB间同频切换及TAU更新流程
4、主要系统消息详解
4.1、MIB消息中可以获取的重要信息
4.2、SIB1消息中可以获取的重要信息
4.3、SI消息中可以获取的重要信息(SI消息主要包含SIB2、SIB3消息)
4.3、切换MR消息中可以获取的重要信息(为切换提供判定依据)