07 UMTS UTRAN Signaling Procedures HUAWEI TECHNOLOGIES CO , LTD All rights reserved Internal www huawei com UMTS UTRAN Signaling Procedures HUAWEI TECHNOLOGIES CO , LTD All rights reserved 1 1 UTRAN S[.]
Internal UMTS UTRAN Signaling Procedures www.huawei.com HUAWEI TECHNOLOGIES CO., LTD All rights reserved UTRAN System Architecture and Protocol Stack Basic Terms Related to the UTRAN Basic Signaling Procedures HUAWEI TECHNOLOGIES CO., LTD All rights reserved UTRAN System Architecture Core Network Iu Iu RNS RNS Iur RNC RNC Iub Iub Iub Node B Node B Node B HUAWEI TECHNOLOGIES CO., LTD All rights reserved Iub Node B WCDMA Protocol Architecture SMS / GMM / MM SMS / GMM / MM Relay RRC RLC RRC RLC MAC MAC L1 L1 RANAP SCCP Signalling Bearer AAL5 RANAP SCCP Signalling Bearer ATM ATM Uu UE HUAWEI TECHNOLOGIES CO., LTD AAL5 Iu RNS All rights reserved MSC/ SGSN N Comparison: GSM-BSS Protocol Architecture MS BTS BSC MSC CM CM MM MM L3 RR BSSMAP BSSMAP RR RR BTSM BTSM L2 LAPDm LAPDm LAPD LAPD L1 SigL1 SigL1 SigL1 SigL1 Um接 接 HUAWEI TECHNOLOGIES CO., LTD Abis接 接 All rights reserved SCCP SCCP MTP MTP A接 接 Protocol Architecture for the RNC Control Plane CN RANAP UE RRC RNC RNSAP RNC NBAP Node B NBAP ：Node B Application Part RANAP：Radio Access Network Application Part RNSAP：Radio Network Subsystem Application Part RRC ：Radio Resource Control HUAWEI TECHNOLOGIES CO., LTD All rights reserved Summary HUAWEI TECHNOLOGIES CO., LTD This part describes the UTRAN system architecture and the protocol architecture All rights reserved UTRAN System Architecture and Protocol Stack Basic Terms Related to the UTRAN Basic Signaling Procedures HUAWEI TECHNOLOGIES CO., LTD All rights reserved Basic Terms UTRAN：provides setup, maintenance, and release of radio access bearer (RAB) for the Non-Access Stratum (NAS) to shield the focus of the NAS on the features of the radio access stratum Other terms: UTRAN, RAB, RB, and RL RAB RB UE RNC RL NodeB UTRAN HUAWEI TECHNOLOGIES CO., LTD All rights reserved CN Basic Terms RAB: The service that the access stratum provides to the Non-Access Stratum (NAS) for transfer of user data between User Equipment and CN RB：The service provided by the Layer for transfer of user data between User Equipment and SRNC RL: A "radio link" is a logical association between single User Equipment and a single UTRAN access point Its physical realisation comprises one or more radio bearer transmissions HUAWEI TECHNOLOGIES CO., LTD All rights reserved Intra-RNC Soft Handover Procedure (Adding a Branch) Node B(new) UE SRNC Decision to setup new RL NBAP Radio Link Setup Request NBAP Start RX description NBAP Radio Link Setup Response NBAP ALCAP Iub Data Transport Bearer Setup DCH-FP Downlink Synchronisation DCH-FP DCH-FP 5.Uplink Synchronisation DCH-FP Start TX description RRC RRC HUAWEI TECHNOLOGIES CO., LTD 6.DCCH: Active Set Update DCCH : Active Set Update Complete All rights reserved RRC RRC Intra-RNC Soft Handover Procedure (Deleting a Branch) UE Node B(old) SRNC Decision to delete a RL RRC RRC 1.DCCH: Active Set Update DCCH : Active Set Update Complete NBAP Radio Link Deletion Request RRC RRC NBAP Stop RX and Tx NBAP Radio Link Deletion Response ALCAP Iub Transport Bearer release HUAWEI TECHNOLOGIES CO., LTD All rights reserved NBAP Inter-RNC Soft Handover CN CN SRNC NodeB NodeB SRNC RNC NodeB NodeB NodeB After soft handover Before soft handover When a radio link between the RNC and another NodeB is added, the original radio link between the SRNC and a NodeB is deleted HUAWEI TECHNOLOGIES CO., LTD All rights reserved RNC NodeB Inter-RNC Soft Handover Procedure (Replacing a Radio Link) UE Node B Drift RNS Node B Serving RNS Drift RNC Serving RNC Decision to setup new RL and release old RL Radio Link Setup Request RNSAP NBAP Start RX description Radio Link Setup Request NBAP Radio Link Setup Response NBAP NBAP Radio Link Setup Response RNSAP ALCAP Iub Data Transport Bearer Setup DCH-FP DCH-FP RNSAP RNSAP ALCAP Iur Bearer Setup Downlink Synchronisation DCH-FP Uplink Synchronisation DCH-FP Start TX description DCCH: Active Set Update RRC RRC [Radio Link Addition & Deletion] DCCH : Active Set Update Complete NBAP 10 Radio Link Deletion Request RRC RRC NBAP Stop RX and TX NBAP 11 Radio Link Release Response 12 ALCAP Iub Data Transport Bearer Release HUAWEI TECHNOLOGIES CO., LTD All rights reserved NBAP Intra-RNC Hard Handover NodeB CN CN SRNC SRNC NodeB NodeB NodeB After hard handover Before hard handover The SRNC cannot maintain two radio links with two NodeBs at the same time HUAWEI TECHNOLOGIES CO., LTD All rights reserved Intra-RNC Hard Handover Procedure UE Node B Source Node B SRNC Target Decide to handover NBAP Radio Link Setup Request NBAP Start Rx NBAP Radio Link Setup Response NBAP ALCAP Iub Data Transport Bearer Setup DCH-FP Downlink Synchronisation DCH-FP DCH-FP RRC 5.Uplink Synchronisation DCH-FP Start Tx 6.DCCH : Physical Channel Reconfiguration Radio Link Failure Indication RRC NBAP DCCH : Physical Channel Reconfiguration Complete RRC NBAP RRC NBAP Radio Link Deletion Request 10 Radio Link Deletion Response NBAP 11 ALCAP Iub Data Transport Bearer Release HUAWEI TECHNOLOGIES CO., LTD All rights reserved NBAP NBAP Inter-RNC Hard Handover CN SRNC NodeB CN SRNC RNC NodeB NodeB Before hard handover RNC NodeB After hard handover The radio link between the SRNC and a NodeB and the radio link between the RNC and another NodeB cannot exist at the same time HUAWEI TECHNOLOGIES CO., LTD All rights reserved Inter-RNC Hard Handover Procedure (over the Iur Interface) UE Node B Target Node B Source RNC Source RNC Target SRNC Radio Link Setup Request RNSAP RNSAP Radio Link Setup Request NBAP NBAP NBAP Radio Link Setup Response NBAP ALCAP Iub Data Transport Bearer Setup RL Setup Response RNSAP RNSAP ALCAP Iur Data Transport Bearer Setup 7.DCCH : Physical Channel Reconfiguration RRC NBAP Radio Link Failure Indication NBAP RNSAP Radio Link Failure Indication RNSAP 10 DCCH : Physical Channel Reconfiguration Complete RRC RNSAP NBAP NBAP 12 Radio Link Deletion Request 13 Radio Link Deletion Response RRC 11 Radio Link Deletion Request RRC RNSAP NBAP NBAP 14 ALCAP Iub Data Transport Bearer Release RNSAP 15 Radio Link Deletion Response RNSAP 16 ALCAP Iur Data Transport Bearer Release HUAWEI TECHNOLOGIES CO., LTD All rights reserved SRNC Relocation Core Network Core Network Iu DRNS Iu SRNS SRNS RNS Iur Cells UE UE Before SRNS Relocation HUAWEI TECHNOLOGIES CO., LTD After SRNS Relocation All rights reserved Types of SRNS Relocation According to existing realization modes of the RNC, the SRNS relocation can be classified into the following types: Static relocation Relocation after the DRL is established when the UE is in the CELL_DCH state It is called the static state Relocation after the IUR CCH is established when the UE is in the CELL_FACH state It is called the FACH static relocation Relocation with hard handover: indicates the relocation triggered by inter-RNC handover when the UE is in the CELL_DCH state Relocation with forward handover: indicates the relocation triggered by the cell update or URA update when the UE is in the CELL_FACH, CELL_PCH, or URA_PCH state Inter-RAT handover: The handover procedure between WCDMA and GSM is basically the same as the relocation with hard handover HUAWEI TECHNOLOGIES CO., LTD All rights reserved Static Relocation HUAWEI TECHNOLOGIES CO., LTD All rights reserved Relocation with Hard Handover (CS) SourceRNC RANAP NodeB Relocation Reqired CN TargetRNC Reloc Req RANAP NBAP RL Setup Req NBAP NBAP RL Setup Rsp NBAP Est Req Q.AAL2 Q.AAL2 Est Conf Q.AAL2 DCH-FP DL Sync DCH- FP DCH-FP UL Sync DCH- FP Q.AAL2 Reloc Req Ack RANAP Relocation Cmd RANAP RANAP Physical Channel Recfg Req RRC RNSAP Reloc Detect RNSAP RANAP IU Rel Cmd RANAP RANAP IU Rel Complete RANAP RANAP RANAP RL Del Req RANAP RL Del Rsp RANAP HUAWEI TECHNOLOGIES CO., LTD UE The handover procedure is similar to the inter-BSC handover procedure in the GSM system RANAP RANAP RANAP NodeB RRC RL Restore Ind RNSAP RNSAP RRC All rights reserved Physical Channel Recfg Complete RRC Relocation with Hard Handover (PS) HUAWEI TECHNOLOGIES CO., LTD All rights reserved Inter-RAT Handover Procedure (from UMTS to GSM) HUAWEI TECHNOLOGIES CO., LTD All rights reserved 谢谢 www.huawei.com