資源描述：
《LTE信令流程介紹》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫。
1、技術(shù)文件技術(shù)文件名稱：LTE信令流程介紹技術(shù)文件編號：版本：擬制審核會簽標(biāo)準(zhǔn)化批準(zhǔn)目錄1概念介紹51.1控制面和用戶面協(xié)議棧51.2承載概念51.3連接概念62開機(jī)附著流程72.1正常流程72.2異常流程102.2.1RRC連接建立失敗102.2.2核心網(wǎng)拒絕112.2.3eNB未等到Initialcontextsetuprequest消息122.2.4RRC重配消息丟失或者沒收到RRC重配完成消息或者eNB內(nèi)部配置UE的安全參數(shù)等失敗133UE發(fā)起的SERVICEREQUEST流程153.1正常流程153.2異常流程173.2.1RRC連接建立失敗173.2.2核心網(wǎng)拒絕183
2、2.3eNB未等到Initialcontextsetuprequest消息193.2.4RRC重配消息丟失或者eNB內(nèi)部配置UE的安全參數(shù)失敗或者沒有建立起來一個非GBR承載193.2.5eNB建立專用承載失敗193.2.6eNB建立默認(rèn)承載失敗194網(wǎng)絡(luò)發(fā)起的PAGING流程214.1S_TMSI尋呼214.2IMSI尋呼215TAU流程：215.1正常流程225.1.1IDLE下發(fā)起的225.1.2CONNECTED下發(fā)起的265.2異常流程266去附著276.1關(guān)機(jī)去附著276.2非關(guān)機(jī)去附著277切換流程298專用承載建立流程318.1正常流程318.2異常流程338.2
3、.1核心網(wǎng)拒絕338.2.2eNB本地建立失?。ê诵木W(wǎng)主動發(fā)起的建立）338.2.3eNB未等到RRC重配完成消息，回復(fù)失敗358.2.4UENAS層拒絕358.2.5上行直傳NAS消息丟失379專用承載修改流程389.1正常流程389.1.1修改QoS399.1.2不修改QoS，只修改TFT409.2異常流程419.2.1核心網(wǎng)拒絕419.2.2eNB回復(fù)失敗419.2.3UENAS層拒絕419.2.4上行直傳NAS消息丟失4110專用承載釋放流程4211空口RRC信令431概念介紹1.1控制面和用戶面協(xié)議棧控制面協(xié)議棧用戶面協(xié)議棧1.2承載概念EPSbearer:AnEPSb
4、eareruniquelyidentifiestrafficflowsthatreceiveacommonQoStreatmentbetweenaUEandaPDNGWE-RAB:AnE-RABuniquelyidentifiestheconcatenationofanS1BearerandthecorrespondingDataRadioBearer.WhenanE-RABexists,thereisaone-to-onemappingbetweenthisE-RABandanEPSbeareroftheNonAccessStratum.DataRadioBearer:theD
5、ataRadiobearertransportsthepacketsofanE-RABbetweenaUEandaneNB.Thereisanone-to-onemappingbetweentheE-RABandtheDataRadioBearer。（eNB）Figure13.1-1:EPSBearerServiceArchitectureDefaultBearer:TheEPSbearerwhichisfirstestablishedforanewPDNconnectionandremainsestablishedthroughoutthelifetimeofthePDNcon
6、nection.Non-GBRbearer:AnEPSbearerthatusesnetworkresourcesthatarenotrelatedtoaguaranteedbitrate(GBR)value.GBRbearer:relatedtoaguaranteedbitrate(GBR)value.1.3連接概念Uu（X1）:interfacebetweenanUEandE-UTRAN.S1:interfacebetweenaneNBandanEPC,providinganinterconnectionpointbetweentheE-UTRANandtheEPC.UE-a
7、ssociatedlogicalS1-connection:TheUE-associatedlogicalS1-connectionusestheidentitiesMMEUES1APIDandeNBUES1APIDaccordingtodefinitionin[23.401].ForareceivedUEassociatedS1-APmessagetheMMEidentifiestheassociatedUEbasedontheMMEUES1APIDIEandtheeNBide
