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Umts call-flow-scenarios overview

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  • 1. 1 Contents • Introduction – Basic stuff.. • Call Flow Scenarios – Node-B initialization and System Information Broadcast – RRC Connection Establishment and Release – Location/Routing Area Update – Circuit Switch Call Setup and Release – Packet Switch Call Setup and Release – Handovers • Backup – Misc..
  • 2. 2 Introduction • UE Connection States • RNC Cell and UE Contexts • End to End Protocol Stacks (CS and PS Domain) • Handover Scenarios
  • 3. 3 UE Connection States GSM Connected Mode UTRAN RRC Connected GPRS Packet Transfer Mode IDLE Mode CELL DCH CELL PCH URA PCH CELL FACH Camping on GSM/GPRS Cell Camping on UTRAN Cell GPRS Packet Idle Mode UMTS to GSM Inter-System Handover GSM to UMTS Inter-System Handover
  • 4. 4 UE #M UE #2 UE #1 DTCH’s CELL #N CELL #2 CELL #1 RLC-TM RLC-TM RNC – Cell and UE Contexts PHY-Upper MAC–d RLC-UM RLC-AM RLC-AM RLC-AM RLC-AM RLC-TM DCH FP DCH FP DCH FP DCCH DCCH DCCH DCCH DTCH DCH DCH RRC PDCP GTP IuUP PS RAB CS RAB MAC–c RRC SRB RLC-TM RLC-UMRLC-TM SRB #0 SRB #0 CCCH CCCHPCCH PCH FP FACH FPRACH FP FACHPCH RACH SRB #1 SRB #2 SRB #3 SRB #4 DCH’s MAC-d MAC-c/sh Flows
  • 5. 5 CS Domain – End to End Protocols PHY PHY [E1/T1/STM] ATM AAL2 FP AAL5 SSCOP SSCF-UNI STC.2 NBAP ALCAP PHY PHY-upper MAC RLC RRCCodec MM CC PHY [E1/T1/STM] ATM AAL2 FP AAL5 SSCOP SSCF-UNI STC.2NBAP ALCAP PHY-upper MAC RLC RRC IuUP AAL5 SSCOP SSCF-NNI STC.1 ALCAP MTP3-b SCCP RANAP PHY [E1/T1/STM] ATM AAL2 IuUP AAL5 SSCOP SSCF-NNI STC.1 ALCAP MTP3-b SCCP RANAP Codec MM CC UE Node-B RNC 3G-MSC Uu IuB Iu-CS
  • 6. 6 PS Domain – End to End Protocols PHY PHY [E1/T1] ATM AAL2 FP AAL5 SSCOP SSCF-UNI STC.2 NBAP ALCAP PHY PHY-upper MAC RLC RRCPDCP GMM SM PHY [E1/T1/STM-1] ATM AAL2 FP AAL5 SSCOP SSCF-UNI STC.2NBAP ALCAP PHY-upper MAC RLC RRC IP AAL5 SSCOP SSCF-NNI MTP3-b SCCP RANAP PHY [STM-1] ATM SSCF-NNI AAL5 SSCOP MTP3-b SCCP RANAP GMM SM UE Node-B RNC 3G-SGSN Uu IuB Iu-PS IP PDCP GTP-U UDP IP GTP-U UDP GTP-C L2 L1 IP GTP-C UDP GTP-C L2 L1 IP 3G-GGSN Gn
  • 7. 7 Handover Scenarios UTRAN RNS Node-BNode-B RNC RNS Node-BNode-B RNC Core Network (CN) UE
  • 8. 8 Call Flow Scenarios • Node-B initialization • RRC Connection Establishment and Release • Location/Routing Area Update • Circuit Switch Call Setup and Release • Packet Switch Call Setup and Release • Handovers
  • 9. 9 Node-B Initialization RNC MSCNode-BUE Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup SIB5 System Information Update Un-block and Un-barred Cell
  • 10. 10 Channels Main IEs RNC MSCNode-BUE Node-B InitializationAudit Procedure: Audit Required Indication Message Description: Request the CRNC to perform an audit of the logical resources at the Node B. Node-B initiates this procedure after the SSCOP layer is established via the exchange of BGN/BGAK PDU’s. Main IEs Transaction ID Channels SSCF / SSCOP / AAL5 NBAPNBAP Audit Required Indication [ Transaction ID ]
  • 11. 11 Channels Main IEs RNC MSCNode-BUE Node-B InitializationAudit Procedure: Audit Request Message Description: RNC initiates an audit of the Node-B configuration and status of logical resources, using Audit Request message. A complete audit of a Node B is performed by one or more Audit procedures. Main IEs Transaction ID Start of audit sequence ind Channels SSCF / SSCOP / AAL5 NBAPNBAP Audit Required Indication [ Transaction ID ] NBAPNBAP Audit Request [ Transaction ID, Start of Audit Seq Ind ]
  • 12. 12 Channels Main IEs RNC MSCNode-BUE Node-B InitializationAudit Procedure: Audit Response Message Description: Node-B sends Audit response to RNC, with its current configuration and status of logical resources, using Audit Response message. Main IEs Transaction ID End of audit sequence ind Cell Info (Configured) Local Cell Information Communication Control Port information Channels SSCF / SSCOP / AAL5 NBAPNBAP Audit Required Indication [ Transaction ID ] NBAPNBAP Audit Request [ Transaction ID, Start of Audit Seq Ind ] NBAPNBAP Audit Response [ End of Audit Seq Ind, Local Resource Info ]
  • 13. 13 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCell Setup Procedure: Resource Status Indication Message Description: Node-B sends resource indication message to indicate availability or un-availability of local resource (e.g. Local Cell, etc), or change in capability, operational state, etc of resource. Main IEs Transaction ID No Failure Indication Local Cell ID Add/Delete Indicator Channels SSCF / SSCOP / AAL5 NBAPNBAP Resource Status Indication [ Local Cell ID, Add/Delete Indicator ] Audit Procedure
  • 14. 14 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCell Setup Procedure: Cell Setup Request Message Description: RNC initiates Cell Configuration/Setup, which will use resources in Node-B identified by Local Cell ID, received in Resource Status Indication message. Main IEs Transaction ID, Global (C-ID) Cell ID, Local (Node-B) Cell ID, DL/UL Frequency, Maximum Tx Power, Primary Scrambling Code P-SCH, S-SCH info, PCPICH, SCPICH info, PCCPCH, BCH, etc info.. Channels SSCF / SSCOP / AAL5 NBAPNBAP Resource Status Indication [ Local Cell ID, Add/Delete Indicator ] Audit Procedure NBAPNBAP Cell Setup Request [ Global/Local Cell ID, Physical Config. ]
  • 15. 15 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCell Setup Procedure: Cell Setup Response Message Description: Node B reserves necessary resources and configure the new cell according to received parameters, and on success sends Cell Setup Response to RNC. (On failure, Cell Setup Failure response will be sent!!) Main IEs Transaction ID Channels SSCF / SSCOP / AAL5 NBAPNBAP Resource Status Indication [ Local Cell ID, Add/Delete Indicator ] Audit Procedure NBAPNBAP Cell Setup Request [ Global/Local Cell ID, Physical Config. ] NBAPNBAP Cell Setup Response [ Transaction ID ]
  • 16. 16 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCell Setup Procedure: Block Resource Request Message Description: Node-B request RNC to block (prohibit use of!!) new configured cell until system information (MIB, SIBs, etc) are updated and broadcast on BCH (i.e. PCCPCH). Main IEs Transaction ID Global (C-ID) Cell ID Blocking Priority (High!!) Channels SSCF / SSCOP / AAL5 NBAPNBAP Resource Status Indication [ Local Cell ID, Add/Delete Indicator ] Audit Procedure NBAPNBAP Cell Setup Request [ Global/Local Cell ID, Physical Config. ] NBAPNBAP Cell Setup Response [ Transaction ID ] NBAPNBAP Block Resource Request [ Transaction ID, Blocking Priority ]
  • 17. 17 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCell Setup Procedure: Block Resource Response Message Description: RNC Blocks respective resource (cell!!), and send successful response to the Node-B. Main IEs Transaction ID Channels SSCF / SSCOP / AAL5 NBAPNBAP Resource Status Indication [ Local Cell ID, Add/Delete Indicator ] Audit Procedure NBAPNBAP Cell Setup Request [ Global/Local Cell ID, Physical Config. ] NBAPNBAP Cell Setup Response [ Transaction ID ] NBAPNBAP Block Resource Request [ Transaction ID, Blocking Priority ] NBAPNBAP Block Resource Response [ Transaction ID ]
  • 18. 18 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: RNC sends System Information, Scheduling Information, System Information Update time, etc of respective configured cell to Node-B using series of System Information Update Request message. Main IEs Transaction ID Global (C-ID) Cell ID BCCH Modification Time MIB, SB, SIB info Segment Info Channels SSCF / SSCOP / AAL5 Audit Procedure NBAPNBAP System Information Update Request [ SIB segment info. ] Cell Setup Procedure
  • 19. 19 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Response Message Description: Node-B process received System Information, Scheduling Information, System Information Update time, etc and send successful response using System Information Update Response message. Main IEs Transaction ID Global (C-ID) Cell ID Channels SSCF / SSCOP / AAL5 Audit Procedure NBAPNBAP System Information Update Request [ SIB segment info. ] Cell Setup Procedure NBAPNBAP System Information Update Response NBAPNBAP System Information Update Request [ SIB segment info. ] NBAPNBAP System Information Update Response Segment 1 Segment 2
  • 20. 20 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: RRC System Information Message Description: Node-B store and process received system information; and schedules transmission of each segment according to scheduling information, on BCCH: BCH: PCCPCH, in Cell. Main IEs Master Information Block, Scheduling Block, System Information Block Channels BCCH / BCH / PCCPCH Audit Procedure NBAPNBAP System Information Update Request [ SIB segment info. ] Cell Setup Procedure NBAPNBAP System Information Update Response NBAPNBAP System Information Update Request [ SIB segment info. ] NBAPNBAP System Information Update Response Segment 1 Segment 2 RRCRRC BCCH: System Information RRCRRC BCCH: System Information
  • 21. 21 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: Common TrCH Setup Request Message Description: RNC use this procedure to setup Common transport channel(s), along with associated physical channels, on which they are mapped, in Node-B. (e.g. One PRACH, AICH, RACH in single message!!.) Main IEs Transaction ID, Cell ID, PRACH parameters [ e.g. TFCS, SF, Signatures, etc..] AICH parameters [ e.g. Channel Codes, Power, etc..] RACH parameters [ e.g. TrCH ID, TFS, etc..] Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [PRACH, AICH, RACH]
  • 22. 22 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: Common TrCH Setup Response Message Description: Node B configure and activate indicated PRACH, AICH and associated RACH transport channel, and sends successful response to RNC (with TLA and Binding ID for RACH IuB AAL2 Bearer!!). Main IEs Transaction ID, RACH parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ] Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [PRACH, AICH, RACH] NBAPNBAP Common TrCH Setup Response [TLA, Binding ID]
  • 23. 23 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: ALCAP Establish Request Message Description: RNC initiates establishment of AAL2 bearer for RACH, using received Transport Layer Address and Binding ID information, in response from Node-B. Main IEs OSAID / DSAID (Originating / Destination signalling association ID) CEID (Path ID + CID) SUGR (Binding ID!!) AAL2 Destination Address of Node-B Channels STP.2 / SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [PRACH, AICH, RACH] NBAPNBAP Common TrCH Setup Response [TLA, Binding ID] ALCAPALCAP ALCAP Establish Request (ERQ) [OSAID,DSAID,SUGR,AAL2 Address]
  • 24. 24 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: ALCAP Establish Confirm Message Description: Node-B ALCAP verifies received Binding ID; and respond successful establishment of AAL2 bearer using ALCAP confirm message. Main IEs OSAID DSAID Channels STP.2 / SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [PRACH, AICH, RACH] NBAPNBAP Common TrCH Setup Response [TLA, Binding ID] ALCAPALCAP ALCAP Establish Confirm (ECF) [OSAID,DSAID] ALCAPALCAP ALCAP Establish Request (ERQ) [OSAID,DSAID,SUGR,AAL2 Address]
  • 25. 25 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: Common TrCH Setup Request Message Description: RNC use this procedure to setup Common transport channel(s), along with associated physical channels, on which they are mapped, in Node-B. (e.g. One SCCPCH, PICH, PCH, FACH(s) in single message!!.) Main IEs Transaction ID, Cell ID, SCCPCH parameters [e.g. ID, TFCS, SF, Codes, etc..] PCH parameters [ e.g. ID, TFS,Window(ToAWS, ToAWE), PICH Code, Max Power, .. ] FACH(s) parameters [ e.g. ID, TFS, Window(ToAWS, ToAWE), Max Power, .. ] Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup NBAPNBAP Common TrCH Setup Request [ SCCPCH, PCH+PICH, FACH(s) ]
  • 26. 26 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: Common TrCH Setup Response Message Description: Node B configure and activate indicated SCCPCH, PICH, associated PCH and FACH(s) transport channel, and sends successful response to RNC (with TLA and Binding ID for PCH, FACH IuB AAL2 Bearer!!). Main IEs Transaction ID, PCH parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ] FACH(s) parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ] Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [ SCCPCH, PCH+PICH, FACH(s) ] NBAPNBAP Common TrCH Setup Response [TLA(s), Binding ID(s)] Common TrCH(PRACH, AICH, RACH) Setup
  • 27. 27 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: ALCAP Establish Request Message Description: RNC initiates establishment of AAL2 bearer for PCH and FACH(s), using received respective Transport Layer Address and Binding ID information, in response from Node-B. Main IEs OSAID DSAID + CEID SUGR (Binding ID!!) AAL2 Destination Address of Node-B Channels STP.2 / SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [ SCCPCH, PCH+PICH, FACH(s) ] NBAPNBAP Common TrCH Setup Response [TLA(s), Binding ID(s)] ALCAPALCAP ALCAP ERQ [OSAID,DSAID,SUGR,AAL2 Address] Common TrCH(PRACH, AICH, RACH) Setup For PCH & FACH(s) bearers
  • 28. 28 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: ALCAP Establish Confirm Message Description: Node-B ALCAP verifies received Binding ID; and respond successful establishment of AAL2 bearer using ALCAP confirm message. Main IEs OSAID DSAID Channels STP.2 / SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [ SCCPCH, PCH+PICH, FACH(s) ] NBAPNBAP Common TrCH Setup Response [TLA(s), Binding ID(s)] ALCAPALCAP ALCAP Establish Request (ERQ) [OSAID,DSAID,SUGR,AAL2 Address] ALCAPALCAP ALCAP Establish Confirm (ECF) [OSAID,DSAID] Common TrCH(PRACH, AICH, RACH) Setup For PCH & FACH(s) bearers
  • 29. 29 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: FP DL Synchronization Frame Description: After successful establishment of AAL2 bearer, at RNC, PCH and FACH(s) FPs initiates L2 synchronization by sending DL synchronization control frame with current CFN. Main IEs CFN (Connection Frame Number) Channels FP / AAL2 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [ SCCPCH, PCH+PICH, FACH(s) ] NBAPNBAP Common TrCH Setup Response [TLA(s), Binding ID(s)] ALCAPALCAP ALCAP Establish Request (ERQ) [OSAID,DSAID,SUGR,AAL2 Address] ALCAPALCAP ALCAP Establish Confirm (ECF) [OSAID,DSAID] FPFP DL Synchronization [ CFN ] Common TrCH(PRACH, AICH, RACH) Setup For PCH & FACH(s) bearers
  • 30. 30 Channels Main IEs RNC MSCNode-BUE Node-B InitializationCommon TrCH Setup Procedure: FP UL Synchronization Frame Description: Node-B RACH FP verifies relationship of SFN with received CFN, and respond back with UL synchronization control frame, containing Time of Arrival [ToA - required timing adjustment!!] information. Main IEs CFN (Connection Frame Number), ToA [Time of Arrival] Channels FP / AAL2 Audit Procedure Cell Setup Procedure System Information Update NBAPNBAP Common TrCH Setup Request [ SCCPCH, PCH+PICH, FACH(s) ] NBAPNBAP Common TrCH Setup Response [TLA(s), Binding ID(s)] ALCAPALCAP ALCAP Establish Request (ERQ) [OSAID,DSAID,SUGR,AAL2 Address] ALCAPALCAP ALCAP Establish Confirm (ECF) [OSAID,DSAID] FPFP DL Synchronization [ CFN ] FPFP UL Synchronization [ CFN, ToA ] Common TrCH(PRACH, AICH, RACH) Setup For PCH & FACH(s) bearers
  • 31. 31 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: After successful setup of all common physical and transport channels for a Cell, RNC sends System Information, Scheduling Information, etc (i.e. SIB5 [& SIB6!!] of respective configured cell) to Node-B. Main IEs Transaction ID Global (C-ID) Cell ID BCCH Modification Time Reference to other SIBs Segment Info [SIB5 with PRACH info, SCCPCH info, AICH info, PICH info, etc ..] Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup NBAPNBAP System Information Update Request [ SIB5 segment info. ]
  • 32. 32 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: Node-B process received SIB5 (and SIB6!!) System Information, Scheduling Information, System Information Update time, etc and send successful response to RNC. Main IEs Transaction ID Global (C-ID) Cell ID Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup NBAPNBAP System Information Update Request [ SIB5 segment info. ] NBAPNBAP System Information Update Response
  • 33. 33 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: Node-B sends resource indication message to indicate that it has successfully change cell capacity and communication control port operational state (and ready to unblock cell!!) Main IEs Transaction ID Communication Control Port ID Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup NBAPNBAP Resource Status Indication [ Communication Control port ID ] SIB5 System Information Update
  • 34. 34 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: Node-B sends resource unblock indication message to RNC, to indicate that respective Cell is operational and can be unblocked. Main IEs Transaction ID Global (C-ID) Cell ID Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup NBAPNBAP Resource Status Indication [ Communication Control port ID ] NBAPNBAP Unblock Resource Indication [ C-ID ] SIB5 System Information Update
  • 35. 35 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: After successful unblocking cell resource, RNC sends updated SIB3 System Information (with cell status as unbarred!!) to Node-B. Main IEs Transaction ID Global (C-ID) Cell ID BCCH Modification Time Reference to other SIBs Segment info [ SIB3 with Cell status unbarred!! ] Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup NBAPNBAP Resource Status Indication [ Communication Control port ID ] NBAPNBAP Unblock Resource Indication [ C-ID ] NBAPNBAP System Information Update Request [ SIB3 segment info. ] SIB5 System Information Update
  • 36. 36 Channels Main IEs RNC MSCNode-BUE Node-B InitializationSystem Info Update Procedure: System Info Update Request Message Description: Node-B process received SIB3 System Information, Scheduling Information, System Information Update time, etc and send successful response to RNC. Main IEs Transaction ID Global (C-ID) Cell ID Channels SSCF / SSCOP / AAL5 Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup NBAPNBAP Resource Status Indication [ Communication Control port ID ] NBAPNBAP Unblock Resource Indication [ C-ID ] NBAPNBAP System Information Update Request [ SIB3 segment info. ] NBAPNBAP System Information Update Response SIB5 System Information Update
  • 37. 37 Channels Main IEs RNC MSCNode-BUE Node-B InitializationNode-B initialization with operational Cell Context!!.. Main IEsChannels Audit Procedure Cell Setup Procedure System Information Update Common TrCH(PRACH, AICH, RACH) Setup Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup SIB5 System Information Update Un-block and Un-barred Cell
  • 38. 38 RRC Connection Management RNC MSCNode-BUE Random Access Procedure RRC Connection Request UE Context Setup RRC Connection Setup RRC Connection Release UE Context Cleanup
  • 39. 39 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementRandom Access Procedure: System Information Broadcast Description: Node-B transmits system information blocks according to scheduling information, on BCCH: BCH: PCCPCH, in Cell. UE acquires system information blocks required for initial access in idle mode. Main IEs Master Information Block, Scheduling Block, System Information Block [SIB 1, SIB 2, SIB 3, etc..] Channels BCCH / BCH / PCCPCH RRCRRC BCCH: System Information RRCRRC BCCH: System Information
  • 40. 40 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementRandom Access Procedure: Physical Layer Access attempts Description: UE use cell system information to determine common physical channel configuration, initial power, etc.. It use received PCPICH power, calculates initial uplink power (open loop!!) and initiate access to network. Main IEs Signature Sequence Channels PRACH RRCRRC BCCH: System Information RRCRRC BCCH: System Information PHYPHY Preamble PHY Preamble PHY Preamble Wait for AICH response, No response, Step-up power!! Retransmit Preamble Wait for AICH response, No response, Step-up power!! Retransmit Preamble
  • 41. 41 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementRandom Access Procedure: Physical Layer Access detection Description: UE use cell system information to determine common physical channel configuration, initial power, etc.. It use received PCPICH power, calculates initial uplink power (open loop!!) and initiate access to network. Main IEs AICH Response Sequence Channels AICH RRCRRC BCCH: System Information RRCRRC BCCH: System Information PHYPHY Preamble PHY Preamble PHY Preamble Wait for AICH response, No response, Step-up power!! Retransmit Preamble Wait for AICH response, No response, Step-up power!! Retransmit Preamble PHYPHY Access Indication
  • 42. 42 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementInitial Access Request: RRC Connection Request Message Description: On successful physical layer access detection, UE transmits RRC Connection Request message to network on RACH : PRACH. Main IEs Initial UE identity [ e.g. IMSI, TMSI, P-TMSI, IMEI, etc. ] Establishment Cause [ e.g. Originating or Terminating voice,data..;Emergency, etc] Measurement Information Channels CCCH : RACH : PRACH Random Access Procedure RRCRRC CCCH: RRC Connection Request PHYPHY RACH Message [ Data, Control (TFCI) ] FPFP RACH Data Frame [ CFN, TFI, TB(s), CRCI indicator ] RLC MAC RLC MACProcess received PRACH data; Decode it using control info(TFCI);
  • 43. 43 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Setup Procedure: Radio Link Setup Request Message Description: On reception of RRC Connection Request message, RNC selects L1, L2 parameters according to UE RRC state and allocate resources. If selected RRC state Cell DCH, initiates RL setup towards Node-B. Main IEs Cell ID, Comm Ctxt ID, UL/DL DPCH info [ e.g. Codes, TFCS, etc ] DCH info [ e.g. TrCH ID, UL/DL TFS, Window(ToAWS, ToAWE), Priority, etc..] Power Information [ e.g. Initial power, SIR target, Max/Min DL power, etc ] Channels SSCF / SSCOP / AAL5 Random Access Procedure RRC Connection Setup Request NBAPNBAP Radio Link Setup Request [ UL/DL DPCH info, RL info, DCH ]
  • 44. 44 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Setup Procedure: Radio Link Setup Response Message Description: On reception Radio Link Setup Request message, Node-B reserves necessary resources and configure new radio link(s) according to received parameters, and respond success to RNC. Main IEs Transaction ID, Node-B Communication Context ID DCH parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ] Channels SSCF / SSCOP / AAL5 Random Access Procedure RRC Connection Setup Request NBAPNBAP Radio Link Setup Request NBAPNBAP Radio Link Setup Response [ Comm Ctxt info, TLA, Binding ID ]
  • 45. 45 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Setup Procedure: ALCAP Establish Request/Confirm Message Description: RNC initiates AAL2 bearer establishment for DCH, using received AAL2 TLA and Binding ID. Node-B ALCAP verifies received Binding ID; and respond successful establishment with ALCAP Confirm msg. Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 destination Address OSAID, DSAID Channels SSCF / SSCOP / AAL5 Random Access Procedure RRC Connection Setup Request NBAPNBAP Radio Link Setup Request NBAPNBAP Radio Link Setup Response ALCAPALCAP ALCAP Establish Request (ERQ) [OSAID,DSAID,SUGR,AAL2 Address] ALCAPALCAP ALCAP Establish Confirm (ECF) [OSAID,DSAID]
  • 46. 46 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Setup Procedure: FP DL/UL Synchronization Frame Description: At RNC, DCH FP initiates L2 synchronization using DL synchronization Control Frame with CFN. Node-B DCH FP verifies CFN to SFN relationship; & respond back with ToA(required timing adjustment) Info. Main IEs CFN (Connection Frame Number) CFN (Connection Frame Number), ToA (Time of Arrival) Channels FP / AAL2 Random Access Procedure RRC Connection Setup Request NBAPNBAP Radio Link Setup Request NBAPNBAP Radio Link Setup Response ALCAPALCAP ALCAP Establish Request (ERQ) ALCAPALCAP ALCAP Establish Confirm (ECF) FPFP DL Synchronization [ CFN ] FPFP UL Synchronization [ CFN, ToA ]
  • 47. 47 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementInitial Access Response: RRC Connection Setup Message Description: On successful setup of UE context, RNC sends RRC Connection Setup message to UE over CCCH : FACH : SCCPCH, with information about allocated resources/configuration. Main IEs Received Initial UE ID, RRC State [DCH, FACH] RNTIs [U-RNTI, C-RNTI] SRB info [RLC, mapping], UL/DL DCH info [e.g. ID, TFS, TFCS, etc..] RL info [e.g. Frequency, Codes, etc] Power Info, etc.. Channels CCCH : FACH : SCCPCH Random Access Procedure RRC Connection Setup Request UE Context Setup RRCRRC CCCH: RRC Connection Setup PHYPHY SCCPCH Message [ Data, Control (TFCI) ] FPFP FACH Data Frame(s) [ CFN, TFI, TB(s) ] RLC MACRLC MAC RRC Connection Setup message would be split into several TB(s), hence this sequence will repeat!!
  • 48. 48 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementInitial Access Response: RRC Connection Setup Complete Message Description: On reception of RRC Connection Setup message, UE configures its L1, L2 according RRC state and respective received parameters, and responds to RNC using RRC Connection Setup Complete message. Main IEs RRC transaction ID, START List [CS, PS] Radio Access Capabilities [e.g. Basic, extended, inter- system, etc] Channels DCCH : DCH : DPDCH Random Access Procedure RRC Connection Setup Request UE Context Setup RRCRRC CCCH: RRC Connection Setup PHYPHY SCCPCH Message [ Data, Control (TFCI) ] FPFP FACH Data Frame(s) [ CFN, TFI, TB(s) ] RLC MACRLC MAC RRC Connection Setup message would be split into several TB(s), hence this sequence will repeat!! RRCRRC DCCH: RRC Connection Setup Complete RLC MAC PHYPHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TFC,Pilot) ] FPFP DCH Data Frame [ CFN, TFI, TB(s), CRCI indicator ] RLC MAC
  • 49. 49 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementRRC Connection Release: RRC Connection Release Message Description: RNC anytime can release RRC Connection in Cell FACH or Cell DCH state, by sending RRC Connection Release message on DCCH. [exceptionally on CCCH, when UE in Cell FACH state!!] Main IEs RRC transaction ID, Release Cause[e.g. normal, inactivity, directed re- establishment, congestion, ..] Rplmn information Channels DCCH : DCH : DPDCH Random Access Procedure RRC Connection Setup Request UE Context Setup RRC Connection Setup RRCRRC DCCH: RRC Connection Release PHYPHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TPC,Pilot) ] FPFP DCH Data Frame(s) [ CFN, TFI, TB(s) ] RLC MACRLC MAC
  • 50. 50 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementRRC Connection Release: RRC Connection Release Complete Message Description: On reception of RRC Connection Release message, responds to RNC with RRC Connection Release Complete message on DCCH, terminates RRC Connection and move to idle state. Main IEs RRC transaction ID Channels DCCH : DCH : DPDCH Random Access Procedure RRC Connection Setup Request UE Context Setup RRC Connection Setup RRCRRC DCCH: RRC Connection Release PHYPHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TPC,Pilot) ] FPFP DCH Data Frame(s) [ CFN, TFI, TB(s) ] RLC MACRLC MAC RRCRRC DCCH: RRC Connection Release Complete RLC MAC PHYPHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TFC,Pilot) ] FPFP DCH Data Frame [ CFN, TFI, TB(s), CRCI indicator ] RLC MAC
  • 51. 51 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Cleanup: NBAP Radio Link Deletion Request Message Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context. If RRC Connection in Cell DCH state, initiate Radio Link Deletion Request towards Node-B. Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID, RL ID(s) Channels SSCF : SSCOP : AAL5 Random Access Procedure RRC Connection Setup Request UE Context Setup RRC Connection Setup RRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ]
  • 52. 52 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Cleanup: NBAP Radio Link Deletion Response Message Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids. On success, respond with Radio Link Deletion Response message to RNC. Main IEs Transaction ID, CRNC Communication Context ID Channels SSCF : SSCOP : AAL5 Random Access Procedure RRC Connection Setup Request UE Context Setup RRC Connection Setup RRC Connection Release NBAPNBAP Radio Link Deletion Request NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ]
  • 53. 53 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementUE Context Cleanup: ALCAP Release Request/Confirm Message Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data stream. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message. Main IEs DSAID Cause DSAID Channels STC.2 / SSCF / SSCOP / AAL5 Random Access Procedure RRC Connection Setup Request UE Context Setup RRC Connection Setup RRC Connection Release NBAPNBAP Radio Link Deletion Request NBAPNBAP Radio Link Deletion Response ALCAPALCAP ALCAP Release Request [ DSAID, Cause ] ALCAPALCAP ALCAP Release Confirm [ DSAID ]
  • 54. 54 Channels Main IEs RNC MSCNode-BUE RRC Connection ManagementRRC Connection Established and Released!!.. Main IEsChannels Random Access Procedure RRC Connection Setup Request UE Context Setup RRC Connection Setup RRC Connection Release UE Context Cleanup
  • 55. 55 Mobility Management – Location Update RNC MSC/VLRNode-BUE RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification /Authentication / Security Procedure (Optional!!) Location Update Accept (Optional TMSI Reallocation!!) Procedure RRC Connection Release UE Context Cleanup Iu Connection Release
  • 56. 56 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Signalling Connection Establishment: RRC Initial Direct Transfer Message Description: On successful establishment of RRC Connection, UE sends first NAS message, enclosed in RRC Initial Direct Transfer message on DCCH. Main IEs RRC transaction ID, CN Domain Identity [e.g. CS, PS], NAS Message [ Encoded – Update Type, Cipher Key Seq No, LAI, Classmark, .. ] Measurement Results Channels DCCH : DCH : DPDCH RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ]
  • 57. 57 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Signalling Connection Establishment: RANAP Initial UE Message Description: RNC uses received CN domain identity in Initial Direct Transfer Message, and initiate Iu (Iu-CS) connection setup, and transfer of received Initial UE NAS message using RANAP to core network (MSC/VLR). Main IEs CN Domain ID [CS or PS] Location Info [ e.g. LAI, RAC, SAI, etc..] NAS–PDU [ Encoded – Update Type, Cipher Key Seq No, LAI, Classmark, .. ] Global RNC ID Iu Signalling Connection Identifier Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Initial UE Message [ CN Domain ID, LAI, NAS-PDU ] SCCPSCCP Connection Confirm (CC) [ SRC/DST References ] SCCPSCCP Connection Request (CR) [ Reference, SRC/DST Add, User Data ] Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be sent over this established SCCP Connection!!
  • 58. 58 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Identification Procedure: RANAP Direct Transfer Message Description: MM (optionally!!) initiates Identification Procedure, with Identity Request message. MSC forwards Identity Request message, encoded NAS PDU, using RANAP Direct Transfer Message to RNC. Main IEs NAS–PDU [ Encoded – Identity Request, Identity Type (e.g. IMSI, TMSI, etc)] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Direct Transfer [ NAS PDU (Identity Request!!) ]
  • 59. 59 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Identification Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, CN Domain ID [CS or PS], NAS Message [ Encoded – Identity Request, Identity Type (e.g. IMSI, TMSI, etc)] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Identity Request!!) ]
  • 60. 60 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Identification Procedure: RRC Uplink Direct Transfer Message Description: UE (MM) responds with Identity Response, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3). Main IEs RRC Transaction ID, CN Domain ID [CS or PS], NAS Message [ Encoded – Identity Response, Requested Identity Value ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Identity Request!!) ] RRCRRC DCCH: Uplink Direct Transfer [ CN Domain ID, NAS Message ]
  • 61. 61 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Identification Procedure: RANAP Direct Transfer Message Description: RNC forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS Message [ Encoded – Identity Response, Requested Identity Value ] Location Info [ e.g. LAI, RAC, SAI, etc..] optional Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Identity Request!!) ] RRCRRC DCCH: Uplink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Identity Response!!) ]
  • 62. 62 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Authentication Procedure: RANAP Direct Transfer Message Description: MM (optionally!!) initiates Authentication Procedure, with Identity Request message. MSC forwards Authentication Request message, encoded NAS PDU, using RANAP Direct Transfer Message to RNC. Main IEs NAS–PDU [ Encoded – Authentication Request, CKSN, RAND, AUTN, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Direct Transfer [ NAS PDU (Authentication Request!!) ] Identification Procedure
  • 63. 63 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Authentication Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, CN Domain ID [CS or PS], NAS Message [ Encoded – Authentication Request, CKSN, RAND, AUTN, .. ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Authentication Request!!) ] Identification Procedure
  • 64. 64 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Authentication Procedure: RRC Uplink Direct Transfer Message Description: UE (MM) responds with Authentication Response, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3). Main IEs RRC Transaction ID, CN Domain ID [CS or PS], NAS Message [ Encoded – Authentication Response, SRES (UE Calculated!!) ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Authentication Request!!) ] RRCRRC DCCH: Uplink Direct Transfer [ CN Domain ID, NAS Message ] Identification Procedure
  • 65. 65 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Authentication Procedure: RANAP Direct Transfer Message Description: RNC forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS Message [ Encoded – Authentication Response, SRES (UE Calculated!!) ] Location Info [ e.g. LAI, RAC, SAI, etc..] optional Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Authentication Request!!) ] RRCRRC DCCH: Uplink Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Authentication Response!!) ] Identification Procedure
  • 66. 66 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Security Procedure: RANAP Security Mode Command Message Description: MSC (optionally!!) initiates Security Procedure, using RANAP Security Mode Command Message to RNC. Main IEs Integrity Protection Info [e.g. Permitted algorithms, Integrity Protection Key, . ] Encryption Info [e.g. Permitted Algorithm Set, Encryption Key, . ] Key Status [Old or New] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Security Mode Command [ Integrity Protection, Encryption info ] Identification / Authentication Procedure
  • 67. 67 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Security Procedure: RRC Security Mode Command Message Description: RNC RRC initiates security procedure, by sending RRC Security Mode Command message to UE on DCCH (SRB-2). Main IEs CN Domain ID [CS or PS], Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Integrity Prot Mode Info [ Cmd(S/M), Algo, FRESH, DL Act time for SRBs ] Ciphering Mode Info [ e.g. Cmd(Start/Restart), Algo, DL Act time for all RBs ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Security Mode Command [ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ] RANAPRANAP Security Mode Command [ Integrity Protection, Encryption info ] Identification / Authentication Procedure
  • 68. 68 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Security Procedure: RRC Security Mode Complete Message Description: UE RRC send successful response of security procedure, by sending RRC Security Mode Complete message to RNC on DCCH (SRB-2). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] UL Integrity Protection activation time for SRBs [ i.e. RRC Msg Seq Numbers ] UL Ciphering activation time for all RBs [ i.e. RLC Seq Numbers ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Security Mode Command [ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ] RANAPRANAP Security Mode Command [ Integrity Protection, Encryption info ] Identification / Authentication Procedure RRCRRC DCCH: Security Mode Complete [ Integrity Check Info, UL Integrity Protection/Ciphering Activation Time ]
  • 69. 69 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Security Procedure: RANAP Security Mode Complete Message Description: RNC send successful response of Security Procedure, using RANAP Security Mode Complete message towards MSC. Main IEs Chosen Integrity Protection Algorithm [ i. e. UIA1 ] Chosen Encryption Algorithm [ No Encryption, or, UEA1 ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Security Mode Command [ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ] RANAPRANAP Security Mode Command [ Integrity Protection, Encryption info ] Identification / Authentication Procedure RRCRRC DCCH: Security Mode Complete [ Integrity Check Info, UL Integrity Protection/Ciphering Activation Time ] RANAPRANAP Security Mode Complete [ Chosen Integrity, Encryption Algorithm ]
  • 70. 70 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Security Procedure: RANAP Common ID Message Description: MSC provide permanent NAS UE identity (i.e. IMSI) to RNC using RANAP Common ID message. RNC use same for paging co-ordination functionality. Main IEs Permanent NAS UE identity ( i.e. IMSI value ) Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RRCRRC DCCH: Security Mode Command [ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ] RANAPRANAP Security Mode Command [ Integrity Protection, Encryption info ] Identification / Authentication Procedure RRCRRC DCCH: Security Mode Complete [ Integrity Check Info, UL Integrity Protection/Ciphering Activation Time ] RANAPRANAP Security Mode Complete [ Chosen Integrity, Encryption Algorithm ] RANAPRANAP Common ID [ Permanent NAS UE Identity ]
  • 71. 71 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Location Update Accept Procedure: RANAP Direct Transfer Message Description: Core network MM confirms location update procedure by Location Update Accept message to UE. MSC transfers Location Update Accept, encoded NAS PDU, in RANAP Direct Transfer message to RNC. Main IEs NAS–PDU [ Encoded – Location Update Accept, LAI, New mobile id(TMSI),] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Direct Transfer [ NAS PDU (Location Update Accept) ] Identification / Authentication / Security Procedure
  • 72. 72 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Location Update Accept Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID [CS or PS] NAS–PDU [ Encoded – Location Update Accept, LAI, New mobile id(TMSI),] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Direct Transfer [ NAS PDU (Location Update Accept) ] Identification / Authentication / Security Procedure RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 73. 73 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Location Update Accept Procedure: RRC Uplink Direct Transfer Message Description: (Optionally!!) If TMSI has been reallocated as part of Location Update Accept Message, UE (MM) responds with TMSI Reallocation Complete, encoded NAS PDU, in RRC Uplink Direct Transfer message. Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID [CS or PS] NAS–PDU [ Encoded – TMSI Reallocation Complete Message Type ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Direct Transfer [ NAS PDU (Location Update Accept) ] Identification / Authentication / Security Procedure RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 74. 74 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Location Update Accept Procedure: RANAP Direct Transfer Message Description: RNC forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS–PDU [ Encoded – TMSI Reallocation Complete Message Type ] Location Info [ e.g. LAI, RAC, SAI, etc..] optional Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) RANAPRANAP Direct Transfer [ NAS PDU (Location Update Accept) ] Identification / Authentication / Security Procedure RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (TMSI Realloc Complete) ]
  • 75. 75 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Iu Connection Release: RANAP Iu Release Command Message Description: On successful completion of Location Update procedure, CN initiate Iu (Signalling!!) Connection Release procedure, using RANAP Iu Release Command towards RNC. Main IEs Cause ( Normal Release!! ) Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure RANAPRANAP Iu Release Command [ Cause ]
  • 76. 76 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Iu Connection Release: RANAP Iu Release Complete Message Description: RNC confirms Iu signalling connection release, using RANAP Iu Release Complete message to CN. It also initiates lower layer (SCCP) connection release, established for respective Iu signalling Connection. Main IEsChannels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure RANAPRANAP Iu Release Command [ Cause ] RANAPRANAP Iu Release Complete SCCPSCCP Released [ SRC/DST References, Cause ] SCCPSCCP Release Complete [ SRC/DST References ] triggers
  • 77. 77 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update RRC Connection Release: RRC Connection Release Message Description: RNC initiates RRC connection release, by sending RRC Connection Release message to UE on DCCH (SRB1). Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Release Cause[e.g. normal, inactivity, directed re- establishment, congestion, ..] Rplmn information Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure Iu Connection Release RRCRRC DCCH: RRC Connection Release [ Integrity Check info, Release Cause ] triggers
  • 78. 78 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update RRC Connection Release: RRC Connection Release Complete Message Description: UE responds with RRC Connection Release Complete message on DCCH to RNC, terminates RRC connection and move to RRC IDLE state. Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure Iu Connection Release RRCRRC DCCH: RRC Connection Release [ Integrity Check info, Release Cause ] triggers RRCRRC DCCH: RRC Connection Release Complete [ Integrity Check info ]
  • 79. 79 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update UE Context Cleanup: NBAP Radio Link Deletion Request Message Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context. If RRC Connection in Cell DCH state, initiate Radio Link Deletion Request towards Node-B. Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID, RL ID(s) Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ]
  • 80. 80 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update UE Context Cleanup: NBAP Radio Link Deletion Response Message Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids. On success, respond with Radio Link Deletion Response message to RNC. Main IEs Transaction ID, CRNC Communication Context ID, Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ] NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ]
  • 81. 81 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update UE Context Cleanup: ALCAP Release Request/Confirm Message Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data stream. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message. Main IEs DSAID Cause DSAID Channels STC.2 / SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ] NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ] ALCAPALCAP ALCAP Release Request [ DSAID, Cause ] ALCAPALCAP ALCAP Release Confirm [ DSAID ]
  • 82. 82 Channels Main IEs RNC MSCNode-BUE Mobility Management – Location Update Location Update Complete!!.. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Location Update Request Procedure) Identification / Authentication / Security Procedure Location Update Accept (Optional TMSI Reallocation!!) Procedure Iu Connection ReleaseRRC Connection Release UE Context Cleanup
  • 83. 83 Connection Management – CS Call Setup and ReleaseRNC MSC/VLRNode-BUE RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification /Authentication / Security Procedure (Optional!!) Call Setup Procedure RRC Connection Release UE Context Cleanup Iu Connection Release RAB Assignment Procedure ( Iu, IuB, Uu Setups!! ) Call Connect Procedure Iu Resource SetupIuB Resource Setup Radio Bearer (Uu) Setup Call Release Procedure Call Connected : Voice Transfer!!
  • 84. 84 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Signalling Connection Establishment: RRC Initial Direct Transfer Message Description: On successful establishment of RRC Connection, UE MM sends Service Request message, encoded NAS message, enclosed in RRC Initial Direct Transfer message on DCCH. Main IEs RRC transaction ID, CN Domain Identity [e.g. CS, PS], NAS Message [ Encoded – CM service request, Service type, CKSN, Classmark, .. ] Measurement Results Channels DCCH : DCH : DPDCH RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ]
  • 85. 85 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Signalling Connection Establishment: RANAP Initial UE Message Description: RNC uses received CN domain identity in Initial Direct Transfer Message, and initiate Iu (Iu-CS) connection setup, and transfer of received Initial UE NAS message using RANAP to core network (MSC/VLR). Main IEs CN Domain ID [CS or PS] Location Info [ e.g. LAI, RAC, SAI, etc..] NAS–PDU [ Encoded – CM service request, Service type, CKSN, Classmark, .. ] Global RNC ID Iu Signalling Connection Identifier Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Initial UE Message [ CN Domain ID, LAI, NAS-PDU ] SCCPSCCP Connection Confirm (CC) [ SRC/DST References ] SCCPSCCP Connection Request (CR) [ Reference, SRC/DST Add, User Data ] Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be sent over this established SCCP Connection!!
  • 86. 86 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Signalling Connection Establishment: RANAP Direct Transfer Message Description: Core network MM confirms CM Service Request acceptance, using CM Service Accept message to UE. MSC transfers CM Service Accept, encoded NAS PDU, in RANAP Direct Transfer message to RNC. Main IEs NAS–PDU [ Encoded – CM service Accept, Only message type!! ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Initial UE Message [ CN Domain ID, LAI, NAS-PDU ] SCCPSCCP Connection Confirm (CC) [ SRC/DST References ] SCCPSCCP Connection Request (CR) [ Reference, SRC/DST Add, User Data ] Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be sent over this established SCCP Connection!! RANAPRANAP Direct Transfer [ NAS PDU (CM Service Accept) ]
  • 87. 87 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Signalling Connection Establishment: RRC Downlink Direct Transfer Message Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, CN Domain ID (CS!!), NAS–PDU [ Encoded – CM service Accept, Only message type!! ] Channels DCCH : DCH : DPDCH RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Initial UE Message [ CN Domain ID, LAI, NAS-PDU ] SCCPSCCP Connection Confirm (CC) [ SRC/DST References ] SCCPSCCP Connection Request (CR) [ Reference, SRC/DST Add, User Data ] Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be sent over this established SCCP Connection!! RANAPRANAP Direct Transfer [ NAS PDU (CM Service Accept) ] RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ]
  • 88. 88 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Identification/Authentication/Security Procedure: UE  RNC  CN Description: After successful establishment of signalling connection, optionally, CN NAS initiates identification, authentication and security procedures. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure
  • 89. 89 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Setup Procedure: RRC Uplink Direct Transfer Message Description: After service accept and security procedure, UE (CC) UE initiates Call Setup Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS Msg [ Encoded – Call Setup, Calling/Called Party No, Bearer Capabilities, .. ] Channels DCCH : DCH : DPDCH RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure
  • 90. 90 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Setup Procedure: RANAP Direct Transfer Message Description: RNC transparently forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS-PDU [Encoded – Call Setup, Calling/Called Party No, Bearer Capabilities, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure RANAPRANAP Direct Transfer [ NAS PDU (Call Setup) ]
  • 91. 91 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Setup Procedure: RANAP Direct Transfer Message Description: MSC Call Control functionality analyze received information in Call Setup message; responds back to UE with Call Proceeding, encoded NAS PDU, using RANAP Direct Transfer Message towards RNC. Main IEs NAS-PDU [Encoded – Call Proceeding, Chosen Bearer Capabilities, Priority, ..] Channels SCCP : MTP3b : SAAL : AAL5 RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure RANAPRANAP Direct Transfer [ NAS PDU (Call Setup) ] RANAPRANAP Direct Transfer [ NAS PDU (Call Proceeding) ]
  • 92. 92 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Setup Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS-PDU [Encoded – Call Proceeding, Chosen Bearer Capabilities, Priority, ..] Channels SCCP : MTP3b : SAAL : AAL5 RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure RANAPRANAP Direct Transfer [ NAS PDU (Call Setup) ] RANAPRANAP Direct Transfer [ NAS PDU (Call Proceeding) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 93. 93 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: RANAP RAB Assignment Request Message Description: After accepting call setup request, MSC initiates RAB setup, using RANAP RAB Assignment Request message towards RNC. Main IEs RAB Setup list, RAB ID RAB Info [e.g. QoS Info, Alloc/Ret Priority, ..] SDU Params per Sub-flow [BLER, BER, SDU Format info combination(SDU Size)] User Plane Info[mode,ver] Transport Layer Info [ i.e. TLA, Binding ID ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ]
  • 94. 94 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: ALCAP Establish Request/Confirm Message Description: RNC initiates AAL2 bearer establishment towards MSC, using received AAL2 TLA & Binding ID. MSC ALCAP verifies received Binding ID; and respond successful establishment with ALCAP ECF Message. Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 Destination Address OSAID, DSAID Channels STC.1 : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] ALCAPALCAP ALCAP Establish Confirm [ OSAID,DSAID ] ALCAPALCAP ALCAP Establish Request [ OSAID,DSAID,SUGR,AAL2 Address ] triggers
  • 95. 95 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: IuUP INIT and INIT ACK Frame Description: After successful AAL2 bearer creation, RNC IuUP initiates initialization procedure with peer IuUP in MSC, to negotiate IuUP version and supported RFCIs (i.e. SDU Sizes, Inter-Frame Time, etc) for this Call. Main IEs IuUP Version Number of Sub-flows in evey RFCI RFCIs, SDU Sizes Channels FP: AAL2 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] ALCAPALCAP ALCAP Establish Confirm [ OSAID,DSAID ] ALCAPALCAP ALCAP Establish Request [ OSAID,DSAID,SUGR,AAL2 Address ] IuUPIuUP INITIALIZATION ACK IuUPIuUP INITIALIZATION [ IuUP Version, RFCIs, SDU Sizes ] triggers
  • 96. 96 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: NBAP RL Reconfiguration Prepare Message Description: After (or along with!!) Iu resource allocation, RNC reserves additional radio resources, according to RAB requirement and initiates resource allocation over IuB, using NBAP RL Reconfiguration Prepare Message. Main IEs NodeB Comm Ctxt ID, UL/DL DPCH info [ e.g. Codes, TFCS, etc ] DCH info [ e.g. TrCH ID, UL/DL TFS, Window(ToAWS, ToAWE), Priority, etc..] RL Info, [e.g. RL ID, DL Code, Power Information, Max/Min DL power, etc ] Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure (Iu Setup) NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
  • 97. 97 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: NBAP RL Reconfiguration Ready Message Description: Node B reserves necessary resources for new configuration of Radio Link(s), Coordinated DCH for Voice, etc according to received parameters; and send success response to RNC. Main IEs Transaction ID, CRNC Comm Ctxt ID, RL IDs DCH Info Response [ e.g. TrCH ID, Transport Layer Address and Binding ID ] Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu Setup ) NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ]
  • 98. 98 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: ALCAP Establish Request/Confirm Message Description: RNC initiates AAL2 bearer establishment for voice DCH, using received AAL2 TLA & Binding ID. Node-B ALCAP verifies received Binding ID; and respond successful establishment with ALCAP Confirm Msg. Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 Destination Address OSAID, DSAID Channels STC.2 : SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu Setup ) NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ] ALCAPALCAP ALCAP Establish Request [ OSAID, DSAID, SUGR, AAL2 Address ] ALCAPALCAP ALCAP Establish Confirm [ OSAID, DSAID ]
  • 99. 99 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: FP DL/UL Synchronization Frames Description: New DCH voice FP initiates L2 synchronization using DL synchronization frame with current CFN. Node-B FP(peer!!) verifies CFN to SFN relationship; & respond back with ToA(required timing adjustment) info Main IEs CFN (Connection Frame Number) CFN (Connection Frame Number), ToA (Time of Arrival) Channels STC.2 : SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu Setup ) NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ] ALCAPALCAP ALCAP Establish Request [ OSAID, DSAID, SUGR, AAL2 Address ] ALCAPALCAP ALCAP Establish Confirm [ OSAID, DSAID ] FPFP DL Synchronization [ CFN ] FPFP UL Synchronization [ CFN, ToA ]
  • 100. 100 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: NBAP RL Reconfiguration Commit Message Description: After successful Iu, IuB Resource setup (and User Plane, L1/L2 at RNC!!), RNC calculates CFN, activation time, for this synchronized procedure; and provide same to Node-B (and UE along with RB Setup!!). Main IEs Transaction ID, Node-B Communication Context ID, CFN (Connection Frame Number – Activation time for new configuration!!) Channels STC.2 : SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu Setup ) NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ] ALCAPALCAP ALCAP Establish Request [ OSAID, DSAID, SUGR, AAL2 Address ] ALCAPALCAP ALCAP Establish Confirm [ OSAID, DSAID ] FPFP DL Synchronization [ CFN ] FPFP UL Synchronization [ CFN, ToA ] NBAPNBAP RL Reconfiguration Commit [ Activation CFN ]
  • 101. 101 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: RRC Radio Bearer Setup Message Description: On successful Iu, IuB resource (and User Plane, L1/L2 at RNC!!), RNC initiates Radio Bearer Setup towards UE on DCCH, for requested voice RAB, with selected configuration and allocated resource information. Main IEs Activation time (CFN!!) RB info [ RAB ID, CN ID, RLC Config, RB mapping ..] RRC State (Cell DCH!!) TrCH info [ UL/DL TFCS, DCH IDs, TFS, etc.. ] Radio info[e.g. Frequency, Codes, Power info, etc.. ] … Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB Setup!! ) RRCRRC DCCH: Radio Bearer Setup [ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
  • 102. 102 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: RRC Radio Bearer Setup Complete Message Description: UE RRC validates, received RB setup configuration, stores it and activates the same at specified activation CFN. After activation of new configuration, it sends Radio Bearer Setup Complete message to RNC. Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq no ] START Value (CS!!) Ciphering Count-C Activation Time (CFN!!) Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB Setup!! ) RRCRRC DCCH: Radio Bearer Setup [ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ] RRCRRC DCCH: Radio Bearer Setup Complete [ RRC Transaction ID, Integrity Check info, START value ] On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!.
  • 103. 103 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RAB Assignment Procedure: RANAP RAB Assignment Response Message Description: On reception of RRC Radio Bearer Setup Complete message, RNC send successful response to RAB Assignment procedure, using RANAP RAB Assignment Response message towards MSC. Main IEs RAB ID (of successfully established RAB!!) Assigned (Chosen) RAB Parameters (if RAB QoS negotiation has performed!!) Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB Setup!! ) RRCRRC DCCH: Radio Bearer Setup [ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ] RRCRRC DCCH: Radio Bearer Setup Complete [ RRC Transaction ID, Integrity Check info, START value ] On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!. RANAPRANAP RAB Assignment Response [ RAB ID ]
  • 104. 104 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connect Procedure: RANAP Direct Transfer Procedure Description: After called party user reached/alerted, MSC Call Control respond with Alerting message back to UE. Alerting message, encoded NAS PDU, is forwarded using RANAP Direct Transfer Message towards RNC. Main IEs NAS–PDU [ Encoded – Alerting Message Type, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Alerting) ]
  • 105. 105 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connect Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS Message [ Encoded – Alerting Message Type, .. ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Alerting) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 106. 106 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connect Procedure: RANAP Direct Transfer Message Description: After called party user accept the Call, MSC Call Control respond with Connect message back to UE. Connect message, encoded NAS PDU, is forwarded using RANAP Direct Transfer Message towards RNC. Main IEs NAS–PDU [ Encoded – Connect Message Type, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Alerting) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Connect) ]
  • 107. 107 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connect Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs NAS Message [ Encoded – Connect Message Type, .. ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Alerting) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Connect) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 108. 108 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connect Procedure: RRC Uplink Direct Transfer Message Description: On reception of Connect message, UE NAS (CC) responds it with Connect Acknowledge message, encoded NAS PDU, in RRC Uplink Direct Transfer Message on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS Message [ Encoded – Connect Acknowledge Message Type, .. ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Alerting) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Connect) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 109. 109 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connect Procedure: RANAP Direct Transfer Message Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer Message, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS Message [ Encoded – Connect Acknowledge Message Type, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Alerting) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Connect) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Connect Acknowledge) ]
  • 110. 110 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Connected: Voice Transfer!! Description: Once call in connected state, two way voice transfer continues until, either of party initiates Call Release Procedure. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!!
  • 111. 111 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Release Procedure: RRC Uplink Direct Transfer Message Description: When calling user disconnects call, UE NAS (CC) initiates Disconnect Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS Message [ Encoded – Disconnect Message Type, ..] Channels DCCH : DCH : DPDCH RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!!
  • 112. 112 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Release Procedure: RANAP Direct Transfer Message Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS Message [ Encoded – Disconnect Message Type, ..] Channels SCCP : MTP3b : SAAL : AAL5 RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! RANAPRANAP Direct Transfer [ NAS PDU (Disconnect) ]
  • 113. 113 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Release Procedure: RANAP Direct Transfer Message Description: MSC Call Control functionality responds back to UE with Release, encoded NAS PDU, using RANAP Direct Transfer Message towards RNC. Main IEs NAS Message [ Encoded – Release Message Type, ..] Channels SCCP : MTP3b : SAAL : AAL5 RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! RANAPRANAP Direct Transfer [ NAS PDU (Disconnect) ] RANAPRANAP Direct Transfer [ NAS PDU (Release) ]
  • 114. 114 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Release Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS Message [ Encoded – Release Message Type, ..] Channels DCCH : DCH : DPDCH RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! RANAPRANAP Direct Transfer [ NAS PDU (Disconnect) ] RANAPRANAP Direct Transfer [ NAS PDU (Release) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 115. 115 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Release Procedure: RRC Uplink Direct Transfer Message Description: On reception of Release message, UE NAS (CC) responds with Disconnect Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (CS!!) NAS Message [ Encoded – Release Complete Message Type, ..] Channels DCCH : DCH : DPDCH RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! RANAPRANAP Direct Transfer [ NAS PDU (Disconnect) ] RANAPRANAP Direct Transfer [ NAS PDU (Release) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 116. 116 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Call Release Procedure: RANAP Direct Transfer Message Description: RNC transparently forwards received NAS Message received in RRC Uplink Direct Transfer message, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS Message [ Encoded – Release Complete Message Type, ..] Channels SCCP : MTP3b : SAAL : AAL5 RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! RANAPRANAP Direct Transfer [ NAS PDU (Disconnect) ] RANAPRANAP Direct Transfer [ NAS PDU (Release) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Release Complete) ]
  • 117. 117 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Iu Connection Release Procedure: RANAP Iu Release Command Message Description: On successful completion of Call Release procedure, CN initiate Iu (Signalling!!) Connection Release procedure, using RANAP Iu Release Command towards RNC. Main IEs Cause ( Normal Release!! ) Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure RANAPRANAP Iu Release Command [ Cause ]
  • 118. 118 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Iu Connection Release Procedure: RANAP Iu Release Complete Message Description: RNC confirms Iu signalling connection release, using RANAP Iu Release Complete message to CN. It also initiates lower layer (SCCP) connection release, established for respective Iu signalling Connection. Main IEsChannels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure RANAPRANAP Iu Release Command [ Cause ] RANAPRANAP Iu Release Complete triggers SCCPSCCP Released [ SRC/DST References, Cause ] SCCPSCCP Release Complete [ SRC/DST References ]
  • 119. 119 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release Iu Connection Release Procedure: ALCAP Release Request/Confirm Message Description: Iu Connection Release Procedure, also initiates release of AAL2 bearers allocated over Iu (for Voice flow!!). Main IEs DSAID Cause (Normal!!) DSAID Channels STC.1 : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection Release ALCAPALCAP ALCAP Release Confirm [ DSAID ] ALCAPALCAP ALCAP Release Request [ DSAID, Cause ] triggers
  • 120. 120 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RRC Connection Release: RRC Connection Release Message Description: RNC initiates RRC connection release, by sending RRC Connection Release message to UE on DCCH (SRB1). Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Release Cause (Normal!!) Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection Release triggers RRCRRC DCCH: RRC Connection Release [ Integrity Check info, Release Cause ]
  • 121. 121 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release RRC Connection Release: RRC Connection Release Complete Message Description: UE responds with RRC Connection Release Complete message on DCCH to RNC, release resources allocated for voice RAB, RB, etc.. terminates RRC connection and move to RRC IDLE state. Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection Release triggers RRCRRC DCCH: RRC Connection Release [ Integrity Check info, Release Cause ] RRCRRC DCCH: RRC Connection Release Complete [ Integrity Check info ]
  • 122. 122 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release UE Context Cleanup: NBAP Radio Link Deletion Request Message Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context, to release resources allocated for voice RAB, RB, etc.. initiate Radio Link Deletion Request towards Node-B, Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID, RL ID(s) Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ]
  • 123. 123 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release UE Context Cleanup: NBAP Radio Link Deletion Response Message Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids, allocated for voice call. On success, respond with Radio Link Deletion Response message to RNC. Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID, RL ID(s) Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ] NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ]
  • 124. 124 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release UE Context Cleanup: ALCAP Release Request/Confirm Message Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data streams. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message. Main IEs DSAID Cause DSAID Channels STC.2 / SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ] NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ] ALCAPALCAP ALCAP Release Request [ DSAID, Cause ] ALCAPALCAP ALCAP Release Confirm [ DSAID ] Twice!!, One for Signalling DCH and other for Voice DCH AAL2 bearer Release!!
  • 125. 125 Channels Main IEs RNC MSCNode-BUE Connection Management – CS Call Setup and Release CS Call Setup and Released!! Description: CS Call Setup, Connected, Voice Transferred, Released, UE back to Idle mode!!.. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Service Request Procedure) Identification / Authentication / Security Procedure Call Setup Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) Call Connect Procedure Call Connected : Voice Transfer!! Call Release Procedure Iu Connection ReleaseRRC Connection Release UE Context Cleanup
  • 126. 126 Session Management – PS Session Setup and ReleaseRNC SGSNNode-BUE RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification /Authentication / Security Procedure (Optional!!) PDP Context Activation (Session Establishment) Request Procedure RRC Connection Release UE Context Cleanup Iu Connection Release RAB Assignment Procedure ( Iu, IuB, Uu Setups!! ) PDP Context Activation (Session Establishment) Accept Procedure Iu Resource SetupIuB Resource Setup Radio Bearer (Uu) Setup PDP Context De-activation (Session Release) Procedure Call Connected : Data Transfer!! Attach Accept Procedure
  • 127. 127 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Signalling Connection Establishment: RRC Initial Direct Transfer Message Description: On successful establishment of RRC Connection, UE MM sends Attach Request message, encoded NAS message, enclosed in RRC Initial Direct Transfer message on DCCH. Main IEs RRC transaction ID, CN Domain Identity (PS), NAS Message [ Encoded – Attach request, Attach type, N/w capability, CKSN, .. ] Measurement Results Channels DCCH : DCH : DPDCH RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ]
  • 128. 128 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Signalling Connection Establishment: RANAP Initial UE Message Description: RNC uses received CN domain identity in Initial Direct Transfer Message, and initiate Iu (Iu-PS) connection setup, and transfer of received Initial UE NAS message using RANAP Initial UE Message to CN. Main IEs CN Domain ID [CS or PS] Location Info [ e.g. LAI, RAC, SAI, etc..] NAS–PDU [ Encoded – Attach request, Attach type, N/w capability, CKSN, .. ] Global RNC ID Iu Signalling Connection Identifier Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment RRCRRC DCCH: Initial Direct Transfer [ CN Domain ID, NAS Message ] RANAPRANAP Initial UE Message [ CN Domain ID, LAI, NAS-PDU ] SCCPSCCP Connection Confirm (CC) [ SRC/DST References ] SCCPSCCP Connection Request (CR) [ Reference, SRC/DST Add, User Data ] Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be sent over this established SCCP Connection!!
  • 129. 129 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Identification/Authentication/Security Procedure: UE  RNC  CN Description: After successful establishment of signalling connection, optionally, CN NAS initiates identification, authentication and security procedures. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure
  • 130. 130 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Attach Accept Procedure: RANAP Direct Transfer Message Description: Core network confirms Attach Request acceptance, using Attach Accept message to UE. SGSN transfers Attach Accept, encoded NAS PDU, in RANAP Direct Transfer message to RNC. Main IEs NAS–PDU [ Encoded – Attach accept, Attach result, RAI, P-TMSI, RA Timer, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment RANAPRANAP Direct Transfer [ NAS PDU (Attach Accept) ] Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure
  • 131. 131 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Attach Accept Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, CN Domain ID (CS!!), NAS Message [ Encoded – Attach accept, Attach result, RAI, P-TMSI, RA Timer, .. ] Channels DCCH : DCH : DPDCH RRC Connection Establishment RANAPRANAP Direct Transfer [ NAS PDU (Attach Accept) ] RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure
  • 132. 132 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Attach Accept Procedure: RRC Uplink Direct Transfer Message Description: (Optionally!!) If TMSI/P-TMSI has been reallocated as part of Attach Accept Message, UE (GMM) responds with Attach Complete, encoded NAS PDU, in RRC Uplink Direct Transfer message. Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (PS) NAS Message [ Encoded – Attach Complete Message Type ] Channels DCCH : DCH : DPDCH RRC Connection Establishment RANAPRANAP Direct Transfer [ NAS PDU (Attach Accept) ] RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 133. 133 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Attach Accept Procedure: RANAP Direct Transfer Message Description: RNC forwards received NAS Message in RRC Uplink Direct Transfer message, to Core Network (SGSN), using RANAP Direct Transfer Message. Main IEs NAS Message [ Encoded – Attach Complete Message Type ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment RANAPRANAP Direct Transfer [ NAS PDU (Attach Accept) ] RRCRRC DCCH: Downlink Direct Transfer [ CN Domain ID, NAS Message ] Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Attach Complete) ]
  • 134. 134 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Setup Request Procedure: RRC Uplink Direct Transfer Message Description: After attach accept procedure, UE (SM) UE initiates PDP Context Activation, using Activate PDP Context Request Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (PS!!) NAS Msg [ Activate PDP Context Req, Req N-SAPI, QoS, PDP Address, APN, .. ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 135. 135 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Setup Request Procedure: RANAP Direct Transfer Message Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer message, to Core Network (SGSN), using RANAP Direct Transfer Message. Main IEs NAS–PDU [ Activate PDP Context Req, Req N-SAPI, QoS, PDP Address, APN, .. ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (Activate PDP Context Request) ]
  • 136. 136 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: RANAP RAB Assignment Request Message Description: On reception of Active PDP Context Request, SGSN initiates resource reservation according to requested Service, QoS type, etc in CN, and towards UTRAN, using RANAP RAB Assignment Request message. Main IEs RAB Setup list, RAB ID RAB Info [e.g. QoS Info, Alloc/Ret Priority, Delay, Max Rate, Guaranteed Rate, Max SDU Size, etc..] SDU Params[BLER, BER] Transport Layer Info [ i.e. TLA(IP),Binding ID(TEID)] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ]
  • 137. 137 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: NBAP RL Reconfiguration Prepare Message Description: On receipt of RAB Assignment Request, RNC reserves additional radio resources, according to new RAB requirement and initiates resource allocation over IuB, using NBAP RL Reconfiguration Prepare Message. Main IEs NodeB Comm Ctxt ID, UL/DL DPCH info [ e.g. Codes, TFCS, etc ] DCH info [ e.g. TrCH ID, UL/DL TFS, Window(ToAWS, ToAWE), Priority, etc..] RL Info, [e.g. RL ID, DL Code, Power Information, Max/Min DL power, etc ] Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
  • 138. 138 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: NBAP RL Reconfiguration Ready Message Description: Node B reserves necessary resources for new configuration of Radio Link(s), packet service DCH transport channel, etc.., according to received parameters; and send success response to RNC. Main IEs Transaction ID, CRNC Comm Ctxt ID, RL IDs DCH Info Response [ e.g. TrCH ID, Transport Layer Address and Binding ID ] Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ]
  • 139. 139 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: ALCAP Establish Request/Confirm Message Description: RNC initiates AAL2 bearer establishment for voice DCH, using received AAL2 TLA & Binding ID. Node-B ALCAP establish required bearer; and respond successful establishment with ALCAP Confirm message. Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 Destination Address OSAID, DSAID Channels STC.2 : SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ] ALCAPALCAP ALCAP Establish Request [ OSAID, DSAID, SUGR, AAL2 Address ] ALCAPALCAP ALCAP Establish Confirm [ OSAID, DSAID ]
  • 140. 140 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: FP DL/UL Synchronization Frames Description: New PS DCH FP initiates L2 synchronization using DL synchronization frame with current CFN. Node- B FP(peer!!) verifies CFN to SFN relationship; & respond back with ToA(required timing adjustment) info Main IEs CFN (Connection Frame Number) CFN (Connection Frame Number), ToA (Time of Arrival) Channels FP : AAL2 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ] ALCAPALCAP ALCAP Establish Request [ OSAID, DSAID, SUGR, AAL2 Address ] ALCAPALCAP ALCAP Establish Confirm [ OSAID, DSAID ] FPFP DL Synchronization [ CFN ] FPFP UL Synchronization [ CFN, ToA ]
  • 141. 141 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: NBAP RL Reconfiguration Commit Message Description: After successful Iu, IuB Resource setup (and User Plane, L1/L2 at RNC!!), RNC calculates CFN, activation time, for this synchronized procedure; and provide same to Node-B (and UE along with RB Setup!!). Main IEs Transaction ID, Node-B Communication Context ID, CFN (Connection Frame Number – Activation time for new configuration!!) Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RANAPRANAP RAB Assignment Request [ RAB ID, RAB Params, User Plane Info ] NBAPNBAP RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ] NBAPNBAP RL Reconfiguration Ready [ TLA, Binding ID ] ALCAPALCAP ALCAP Establish Request [ OSAID, DSAID, SUGR, AAL2 Address ] ALCAPALCAP ALCAP Establish Confirm [ OSAID, DSAID ] FPFP DL Synchronization [ CFN ] FPFP UL Synchronization [ CFN, ToA ] NBAPNBAP RL Reconfiguration Commit [ Activation CFN ]
  • 142. 142 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: RRC Radio Bearer Setup Message Description: On successful Iu, IuB resource (and User Plane, L1/L2 at RNC!!), RNC initiates Radio Bearer Setup towards UE on DCCH, for requested PS RAB, with selected configuration and allocated resource information. Main IEs Activation time (CFN!!) RB info [ RAB ID, CN ID, RLC Config, RB mapping ..] RRC State (Cell DCH!!) TrCH info [ UL/DL TFCS, DCH IDs, TFS, etc.. ] Radio info[e.g. Frequency, Codes, Power info, etc.. ] … Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( IuB Setup!! ) RRCRRC DCCH: Radio Bearer Setup [ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
  • 143. 143 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: RRC Radio Bearer Setup Complete Message Description: UE RRC validates, received RB setup configuration, stores it and activates the same at specified activation CFN. After activation of new configuration, it sends Radio Bearer Setup Complete message to RNC. Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq no ] START Value (PS!!) Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( IuB Setup!! ) RRCRRC DCCH: Radio Bearer Setup [ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ] RRCRRC DCCH: Radio Bearer Setup Complete [ RRC Transaction ID, Integrity Check info, START value ] On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!.
  • 144. 144 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: RANAP RAB Assignment Response Message Description: On reception of RRC Radio Bearer Setup Complete message, RNC send successful response to RAB Assignment procedure, using RANAP RAB Assignment Response message towards SGSN. Main IEs RAB ID (of successfully established RAB!!) Assigned (Chosen) RAB Parameters (if RAB QoS negotiation has performed!!) Transport Layer Info [ i.e. TLA(IP),Binding ID(TEID)] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( IuB Setup!! ) RRCRRC DCCH: Radio Bearer Setup [ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ] RRCRRC DCCH: Radio Bearer Setup Complete [ RRC Transaction ID, Integrity Check info, START value ] On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!. RANAPRANAP RAB Assignment Response [ RAB ID ]
  • 145. 145 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Setup Accept Procedure: RANAP Direct Transfer Message Description: After successful RAB setup in UTRAN and GTP Tunnel setup towards GGSN, SGSN SM respond with Activate PDP Context Accept message back, which is forwarded using RANAP Direct Transfer Message. Main IEs NAS–PDU [Activate PDP Context Accept, Negotiated QoS, Priority, PDP address,] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Active PDP Context Accept) ]
  • 146. 146 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RAB Assignment Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (PS!!) NAS–PDU [Activate PDP Context Accept, Negotiated QoS, Priority, PDP address,] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) RANAPRANAP Direct Transfer [ NAS PDU (Active PDP Context Accept) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 147. 147 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Established: Data Transfer!! Description: Once session is established, data transfer continues until, either of side initiates Session Release (PDP context deactivation!!) Procedure. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!!
  • 148. 148 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Release Procedure: RRC Uplink Direct Transfer Message Description: Either MS or n/w NAS (SM) can initiate session release!! e.g.UE NAS (SM) initiates session release using De-activate PDP Context Request message, encoded NAS PDU, in RRC Uplink Direct Transfer message. Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (PS!!) NAS–PDU [De-activate PDP Context Request, SM Cause, Teardown Indicator] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 149. 149 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Release Procedure: RANAP Direct Transfer Message Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer, to Core Network (MSC/VLR), using RANAP Direct Transfer Message. Main IEs NAS–PDU [De-activate PDP Context Request, SM Cause, Teardown Indicator] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (De-activate PDP Context Request) ]
  • 150. 150 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Release Procedure: RANAP Direct Transfer Message Description: SGSN SM, preserves or initiate release of CN resources as per teardown indicator, responds back to UE with De-activate PDP Context Accept message, encoded NAS PDU, using RANAP Direct Transfer message. Main IEs NAS–PDU [ De-activate PDP Context Accept Msg type, Transaction ID ] Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (De-activate PDP Context Request) ] RANAPRANAP Direct Transfer [ NAS PDU (De-activate PDP Context Accept) ]
  • 151. 151 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Session Release Procedure: RRC Downlink Direct Transfer Message Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3). Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] CN Domain ID (PS!!) NAS–PDU [ De-activate PDP Context Accept Msg type, Transaction ID ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! RRCRRC DCCH: Uplink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ] RANAPRANAP Direct Transfer [ NAS PDU (De-activate PDP Context Request) ] RANAPRANAP Direct Transfer [ NAS PDU (De-activate PDP Context Accept) ] RRCRRC DCCH: Downlink Direct Transfer [ Integrity Check info, CN Domain ID, NAS Message ]
  • 152. 152 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Iu Connection Release Procedure: RANAP Iu Release Command Message Description: On successful completion of Session Release (PDP context de-activation) procedure, SGSN initiate Iu (Signalling!!) Connection Release procedure, using RANAP Iu Release Command towards RNC. Main IEs Cause ( Normal Release!! ) Channels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure RANAPRANAP Iu Release Command [ Cause ]
  • 153. 153 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release Iu Connection Release Procedure: RANAP Iu Release Complete Message Description: RNC confirms Iu signalling connection release, using RANAP Iu Release Complete message to CN. It also initiates lower layer (SCCP) connection release, established for respective Iu signalling Connection. Main IEsChannels SCCP : MTP3b : SAAL : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure RANAPRANAP Iu Release Command [ Cause ] RANAPRANAP Iu Release Complete triggers SCCPSCCP Released [ SRC/DST References, Cause ] SCCPSCCP Release Complete [ SRC/DST References ]
  • 154. 154 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RRC Connection Release: RRC Connection Release Message Description: RNC initiates RRC connection release, by sending RRC Connection Release message to UE on DCCH (SRB1). Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Release Cause (Normal!!) Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure Iu Connection Release triggers RRCRRC DCCH: RRC Connection Release [ Integrity Check info, Release Cause ]
  • 155. 155 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release RRC Connection Release: RRC Connection Release Complete Message Description: UE responds with RRC Connection Release Complete message on DCCH to RNC, release resources allocated for PS RAB, RB, etc.. terminates RRC connection and move to RRC IDLE state. Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ] Channels DCCH : DCH : DPDCH RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure Iu Connection Release triggers RRCRRC DCCH: RRC Connection Release [ Integrity Check info, Release Cause ] RRCRRC DCCH: RRC Connection Release Complete [ Integrity Check info ]
  • 156. 156 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release UE Context Cleanup: NBAP Radio Link Deletion Request Message Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context, to release resources allocated for PS RAB, RB, etc.. initiate Radio Link Deletion Request towards Node-B. Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID, RL ID(s) Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ]
  • 157. 157 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release UE Context Cleanup: NBAP Radio Link Deletion Response Message Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids, allocated for PS call. On success, respond with Radio Link Deletion Response message to RNC. Main IEs Transaction ID, CRNC Comm Ctxt ID, Channels SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ] NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ]
  • 158. 158 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release UE Context Cleanup: ALCAP Release Request/Confirm Message Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data streams. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message. Main IEs DSAID Cause DSAID Channels STC.2 / SSCF : SSCOP : AAL5 RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release!!) Procedure Iu Connection ReleaseRRC Connection Release NBAPNBAP Radio Link Deletion Request [ RL ID(s) ] NBAPNBAP Radio Link Deletion Response [ CRNC Comm Ctxt ID ] ALCAPALCAP ALCAP Release Request [ DSAID, Cause ] ALCAPALCAP ALCAP Release Confirm [ DSAID ] Twice!!, One for Signalling DCH and other for PS DCH AAL2 bearer Release!!
  • 159. 159 Channels Main IEs RNC SGSNNode-BUE Session Management – PS Session Setup and Release PS Session Setup and Released!! Description: PS Session Established, Packet data Transferred, Session Released, UE back to Idle mode!!.. Main IEsChannels RRC Connection Establishment Signalling Connection Establishment (Attach Request) Procedure Identification / Authentication / Security Procedure Attach Accept Procedure PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! ) PDP Context Activation (Session Establishment) Accept Procedure Session Established : Data Transfer!! PDP Context De-activation (Session Release) Procedure Iu Connection ReleaseRRC Connection Release UE Context Cleanup
  • 160. Thank You!!.. Mahesh Khade (mahesh.khade@flextronicssoftware.com) Flextronics Software Systems, Bangalore
  • 161. 161 Backup!!.. • Misc..