【正文】
無線鏈路同時增加與刪除CNSRNC RNCNodeB NodeBNodeBCNSRNC RNCNodeB NodeBNodeB軟切換流程示意圖(跨 RNC)837. Uplink SynchronisationRNSAP RNSAP1. Radio Link Setup RequestStart TX descriptionRNSAP RNSAP4. Radio Link SetupResponseNBAP NBAP2. Radio Link Setup RequestNBAP NBAP3. Radio Link Setup ResponseStart RX descriptionDecision to setupnew RL andrelease old RLNBAP 10. Radio Link Deletion RequestNBAP NBAP11. Radio Link Release ResponseStop RX and TX12. ALCAP Iub Data Transport Bearer ReleaseRRCRRC 9. DCCH : Active Set Update CompleteRRCRRC 8. DCCH: Active Set Update Command[Radio Link Addition Deletion]NBAPUE Node BDrift RNSNode BServing RNSDrift RNC Serving RNCALCAP Iur Bearer Setup5. ALCAP Iub Data Transport Bearer SetupDCHFPDCHFPDCHFPDCHFP6. Downlink Synchronisation軟切換流程(跨 RNC)84硬切換前 硬切換后無線鏈路不能夠同時保存CNSRNCNodeBNodeBCNSRNCNodeBNodeB硬切換流程示意圖( RNC內(nèi))85UE Node B Source Node B Target SRNC8. DCCH : Physical Channel Reconfiguration Complete : Physical Channel Reconfiguration1. Radio Link Setup Request2. Radio Link Setup Response9. Radio Link Deletion Request10. Radio Link Deletion Response3 ALCAP ub Data Transport Bearer Setup7. Radio Link Failure IndicationRRCRRCNBAPNBAPNBAPRRCRRCNBAPNBAPNBAP NBAPDecide to handoverStart RxStart TxDCHFP4. Downlink SynchronisationDCHFP SynchronisationDCHFPNBAPNBAPNBAP11. ALCAP Iub Data Transport Bearer Release硬切換流程( RNC內(nèi))86硬切換前 硬切換后無線鏈路不能夠同時保存CNSRNC RNCNodeBNodeBCNSRNC RNCNodeBNodeB硬切換流程示意圖(跨 RNC)87RNSAPRNSAP1. Radio Link Setup RequestUE Node B SourceNode BTargetRNCSourceRNCTargetSRNCRRC RRC10. DCCH : Physical Channel Reconfiguration Complete : Physical Channel ReconfigurationRRC6. ALCAP Iur Data Transport Bearer Setup NBAP NBAP2. Radio Link Setup RequestNBAP NBAP3. Radio Link Setup ResponseNBAP NBAP12. Radio Link Deletion RequestNBAP NBAP13. Radio Link Deletion Response4. ALCAP ub Data Transport Bearer Setup14. ALCAP Iub Data Transport Bearer ReleaseRNSAP RNSAP15. Radio Link Deletion Response16. ALCAP Iur Data Transport Bearer ReleaseRNSAP5. RL Setup Response RNSAPRNSAP11. Radio Link Deletion RequestRNSAPNBAP NBAP8. Radio Link Failure IndicationRNSAP RNSAP9. Radio Link Failure Indication硬切換流程(跨 RNC通過 Iur接口)88釋放過程一般由 CN發(fā)起;當(dāng)然在 UE異常情況下, SRNC也可以請求釋放。首先釋放 UE的連接,然后再釋放與 NodeB的連接。RRC釋放,就是呼叫的結(jié)束。RRC釋放流程( DCH)89當(dāng)釋放使用公共信道的 UE時,可以發(fā)現(xiàn) SRNC只要直接釋放 UE就可以了,而無需釋放 NodeB的資源,當(dāng)然也沒有數(shù)據(jù)承載釋放。RRC釋放流程( CCCH)90本章小結(jié)l 本章主要介紹了 RAN側(cè)的基本信令流程。掌握了這些基本信令流程,對后續(xù)學(xué)習(xí) CN側(cè)的信令流程將有很大的幫助。91課程總結(jié)l 本課程主要介紹了 UTRAN網(wǎng)絡(luò)的各個接口,以及相關(guān)的接口流程。相對于核心網(wǎng)絡(luò)的流程來說,本課程偏重于接入層的流程描述。l 在學(xué)習(xí)的時候,可以和核心網(wǎng)的接口協(xié)議流程結(jié)合起來學(xué)習(xí)?;蛘呦扔辛丝傮w協(xié)議的概念之后,再來對無線側(cè)和核心網(wǎng)側(cè)的流程分別深入學(xué)習(xí)。9293演講完畢,謝謝觀