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UTRAN Architecture Overview
- 1. Radio Access Network Architecture Jussi Tuominen
- 2. 3GPP Release 99 Reference Architecture Node B RNC Uu UE Node B Iub IuCS SMSC /VLR Iur SS7 SS7 GMSC HLR EIR Auc Node B SGSN RNC Uu Node B IuPS Iub UTRAN Jussi Tuominen 30.1.2002 GGSN Gn Gi Core Network
- 3. UMTS Terrestial Radio Access Network (UTRAN) WCDMA Radio Interface Key Change from GSM UTRAN elements are comparable to GSM BSC & BTS Common Interface (Iu) for both PS and CS Core Core elements do not change dramatically - 3G SMSC/VLR provides ATM based Iu-CS interface - 3G SGSN supports ATM based Iu-PS interface Jussi Tuominen 30.1.2002
- 4. UTRAN Architecture • Hierarchical Architecture Node B • Radio Network Subsystem (RNS) RNC Node B Uu • UTRAN Elements: Iub Iur IuCS – Radio Network Controller – Node B (Base Station) • One RNC controls number of Node B’s Node B RNC Node B Uu Iub RNS UTRAN Jussi Tuominen 30.1.2002 IuPS • Node B is only connected to one RNC • New interface Iur for Macrodiversity
- 5. Macro Diversity Node B Iu RNC Uu Node B Iub Softer Handover Iur UE •1 RNC Node B RNC Uu Node B Iub RNS UTRAN Jussi Tuominen 30.1.2002 •1 BS
- 6. Macro Diversity Node B Iu RNC Uu Node B Iub Soft Handover Iur UE •1 RNC (MDC) Node B RNC Uu Node B Iub RNS UTRAN Jussi Tuominen 30.1.2002 • Number of BSs
- 7. Macro Diversity Node B Iu SRNC Uu Node B Iub Iur UE DRNC Node B Iub RNS UTRAN Jussi Tuominen 30.1.2002 • Number of BSs • 1 Serving RNC (MDC) Node B Uu Soft Handover • Number of Drift RNC
- 8. Macro Diversity Node B Iu SRNC Uu Node B Iub Iur UE Node B DRNC Uu Node B Iub RNS UTRAN Jussi Tuominen 30.1.2002 SRNC Anchoring Iu
- 9. Macro Diversity Node B Iu RNC Uu Node B Iub SRNC Relocation Iur UE Node B SRNC Uu Node B Iub RNS UTRAN Jussi Tuominen 30.1.2002 Iu
- 10. Node B • Standardisation term (normally called as Base Station) • Comparable to Base Tranceiver Station in GSM • Responsible for Air Interface Layer 1 • Key Node B Functions: • Modulation and spreading • RF Processing • Inner-loop power control • Rate matching • Macro diversity combining/splitting inside Node B Jussi Tuominen 30.1.2002
- 11. Radio Network Controller (RNC) • Comparable to Base Station Controller in GSM • Responsible for L2 processing of user data • Responsible for Radio Resource Management • Key RNC Functions: • Closed loop power control • Handover control • Admission control • Code allocation • Packet scheduling • Macro diversity combining/splitting over number of Node Bs Jussi Tuominen 30.1.2002
- 12. General Protocol model for UTRAN Radio Network Layer Control Plane User Plane Application Protocol Data Stream(s) Transport Network Layer Transport Network User Plane Transport Network Control Plane ALCAP(s) Signalling Bearer(s) Signalling Bearer(s) Physical Layer Lähde: 3GPP TS25401-380 Jussi Tuominen 30.1.2002 Transport Network User Plane Data Bearer(s)
- 13. 3GPP Release 99 Reference Architecture Node B RNC Uu UE Node B Iub IuCS SMSC /VLR Iur SS7 SS7 GMSC HLR EIR PSTN Auc Node B SGSN RNC Uu Node B IuPS Iub UTRAN Jussi Tuominen 30.1.2002 GGSN Gn PDN Gi Core Network
- 14. Radio Access Network Application Part (RANAP) Key RANAP functions: • Radio Access Bearer (between UE-CN) • RAB Set-UP • RAB Modification • Clearing RAB • Iu Bearer Release • SRNC Relocation • Paging Commands Jussi Tuominen 30.1.2002 Lähde: 3GPP TS 25410-360
- 15. Iu-CS Radio Network Layer User Plane RANAP Transport Network Layer Control Plane Iu UP Protocol Layer Transport Network User Plane Transport Network Control Plane Transport Network User Plane Q.2630.1 SCCP Q.2150.1 MTP3b MTP3b SSCF-NNI SSCF-NNI SSCOP SSCOP AAL5 AAL5 AAL2 ATM Physical Layer Jussi Tuominen 30.1.2002 Lähde: 3GPP TS 25410-360
- 16. Iu-PS Radio Network Layer Control Plane User Plane RANAP Iu UP Protocol Layer Transport Network Layer Transport Network User Plane Transport Network Control Plane Transport Network User Plane SCCP M3UA MTP3-B SCTP SSCF-NNI SSCF-NNI UDP IP SSCOP GTP-U AAL5 IP AAL5 ATM Physical Layer Jussi Tuominen 30.1.2002 ATM Physical Layer Lähde: 3GPP TS 25410-360
- 17. 3GPP Release 99 Reference Architecture Node B RNC Uu UE Node B Iub SMSC /VLR Iur SS7 SS7 GMSC HLR EIR PSTN Auc Node B SGSN RNC GGSN Gn Uu Node B Iub IuBC UTRAN Jussi Tuominen 30.1.2002 PDN Gi CBC Core Network
- 18. Iu-BC Radio Network Layer Transport Network Layer SA Broadcast Plane SABP Protocol Layer Transport Network User Plane •Between RNC and Common Broadcast Center CBC •Service Area Broadcast Protocol (SABP) TCP IP AAL5 ATM Physical Layer Jussi Tuominen 30.1.2002 Lähde: 3GPP TS 25410-360
- 19. 3GPP Release 99 Reference Architecture Node B RNC Uu UE Node B Iub IuCS SMSC /VLR Iur SS7 SS7 GMSC HLR EIR PSTN Auc Node B SGSN RNC Uu Node B IuPS Iub UTRAN Jussi Tuominen 30.1.2002 GGSN Gn PDN Gi Core Network
- 20. Radio Network Subsystem Application Part (RNSAP) Key RNSAP Functions: •Radio Link • Management (between SRNC and DRNC) • Reconfiguration (between SRNC and DRNC) • Supervision (reports from DRNC to SRNC) • Common Control Channel (CCCH) Signalling Transfer • Paging • Relocation Execution Jussi Tuominen 30.1.2002
- 21. Iur Radio Network Layer Transport Network Layer Control Plane User Plane RNSAP Iur Data Stream(s) Transport Network User Plane Transport Network Control Plane Transport Network User Plane ALCAP(Q.2630.1) STC (Q.2150.1) SCCP MTP3-B M3UA MTP3-B M3UA SSCF-NNI SSCF-NNI SCTP SSCF-NNI SSCF-NNI SCTP SSCOP IP SSCOP IP AAL5 AAL5 AAL2 ATM Physical Layer Jussi Tuominen 30.1.2002 Lähde: 3GPP TS 25420-340
- 22. 3GPP Release 99 Reference Architecture Node B RNC Uu UE IuCS SMSC /VLR Node B Iub Iur SS7 SS7 GMSC HLR EIR PSTN Auc Node B SGSN RNC Uu Node B IuPS Iub UTRAN Jussi Tuominen 30.1.2002 GGSN Gn PDN Gi Core Network
- 23. Node B Application Part (NBAP) Key NBAP Functions: • Cell Configuration Management • Common Transport Channel Management • System Information Management • Configuration Verification/Alignment • Measurements on Common Resources • Radio Link Management & Supervision Jussi Tuominen 30.1.2002
- 24. Iub Radio Network Control Plane Q.2630.1 Q.2150.2 Transport Layer SSCF-UNI SSCF-UNI SSCOP SSCOP AAL Type 5 AAL Type 5 AAL Type 2 ATM Physical Layer Jussi Tuominen 30.1.2002 Lähde: 3GPP TS 25420-340 CPCH FP ALCAP USCH FP DSCH FP PCH FP FACH FP RACH FP Node B Application Part (NBAP) User Plane DCH FP Radio Network Layer Transport Network Control Plane
- 25. 3GPP Release 99 Reference Architecture Node B IuCS RNC Uu UE Node B Iub SMSC /VLR Iur SS7 SS7 GMSC HLR EIR PSTN Auc Node B SGSN RNC Uu Node B IuPS Iub GGSN Gn PDN Gi RNS UTRAN Jussi Tuominen 30.1.2002 Core Network
- 26. 3GPP Release 4 Reference Architecture Node B IuCS RNC Uu UE Node B Nb SMSC Server Mc Mc Nc MGW Iub GMSC Server Iur SS7 MGW HLR EIR PSTN Auc Node B SGSN RNC Uu Node B IuPS Iub GGSN Gn PDN Gi RNS UTRAN Jussi Tuominen 30.1.2002 Core Network
- 27. 3GPP Release 5 Reference Architecture Node B MGCF Cx RNC Uu UE Iub Iur Gr MGW MRF Gi SGSN RNC Node B PSTN Mr Node B Uu Mc CSCF HSS Node B Mg SGW IuPS Iub Mm PDN GGSN Gn Gi RNS UTRAN Jussi Tuominen 30.1.2002 Core Network NOTE: Standardisation on-going!
- 28. SS7 signalling in UMTS Core 7KH RULJLQDO 073 VWDFN RPPRQO XVHG LQ *60 RUH LQWHUIDFHV 7KH $70 EDVHG 66 VWDFN SURYLGHV %URDGEDQG 66 DUFKLWHFWXUH 7KH ,3 EDVHG VWDFN XVHV 6WUHDP RQWURO 7UDQVPLVVLRQ 3URWRFRO 673
- 29. WR GHOLYHU 66 VLJQDOOLQJ RYHU ,3 QHWZRUNV MTP-3 User Part MTP-3 User Part MTP-3 User Part MTP-3 User Part MTP-3 MTP-3 B MTP-3 B M3UA MTP-2 SSCF SSCF SCTP MTP-1 SCCOP SCCOP IP AAL5 AAL5 ATM G.804 $70 RYHU 6'+ Jussi Tuominen 30.1.2002 $70 RYHU 3'+ Lähde: 3GPP TS 25420-340
- 30. MTP3 User Adaptation Layer (M3UA) ‡08$ LV DQ 8VHU DGDSWDWLRQ VXEODHU WKDW SURYLGHV IXQFWLRQV UHTXLUHG E VLJQDOLQJ DSSOLFDWLRQ SURWRFROV ‡,(7) LV FXUUHQWO VWDQGDUGLVLQJ ILYH DGDSWDWLRQ VXEODHUV 03$ 08$ 08$ 68$ DQG ,8$ 1RWH WKDW HDFK SURWRFRO FDQ EH LPSOHPHQWHG VHSDUDWHO IURP RWKHU SURWRFROV HJ 08$ GR QRW UHTXLUH VHUYLFHV IURP 08$ Jussi Tuominen 30.1.2002 MTP-3 User Part M3UA SCTP IP
- 31. Stream Control Transmission Protocol (SCTP) :K XVH 673 LQVWHDG RI VLPSO XWLOVLQJ 73 73 DSSOLFDWLRQV KDYH DQ LQFRQYHQLHQFH UHTXLUHPHQW WR PDQDJH DQG PDUN WKH VHTXHQFH QXPEHUV RI HDFK SDFNHW 7KH OLPLWHG VFRSH RI 73 VRFNHWV GRHV QRW VXSSRUW WKH GDWD WUDQVIHU FDSDELOLW XVLQJ PXOWLKRPHG KRVWV Jussi Tuominen 30.1.2002 $OWKRXJK WKH 73 SURYLGHV UHOLDEOH GHOLYHU RI GDWD LW RIWHQ DGGV XQQHFHVVDU VLJQDOOLQJ DQG WKXV FDXVHV XQZDQWHG GHOD RI VHUYLFH 6HFXULW RI 73 LV OLPLWHG )RU H[DPSOH WKH 73 LV UHODWLYHO YXOQHUDEOH WR GHQLDO RI VHUYLFH DWWDFNV VXFK DV 61 DWWDFNV MTP-3 User Part M3UA SCTP IP
- 32. Stream Control Transmission Protocol (SCTP) $FNQRZOHGJHG HUURUIUHH DQG QRQ GXSOLFDWHG SDFNHWRULHQWHG GHOLYHU RI VLJQDOOLQJ PHVVDJHV :KDW GRHV 673 GR MTP-3 User Part ,Q VHTXHQFH GHOLYHU RI XVHU PHVVDJHV ZLWKLQ PXOWLSOH VWUHDPV ZLWK DQ RSWLRQ IRU RUGHURIDUULYDO GHOLYHU RI LQGLYLGXDO PHVVDJHV M3UA SCTP IP Jussi Tuominen 30.1.2002 2SWLRQDOO PXOWLSOH[LQJ PXOWLSOH XVHU PHVVDJHV LQWR D VLQJOH 673 GDWDJUDP 1HWZRUN OHYHO IDXOW WROHUDQFH E VXSSRUWLQJ PXOWLKRPLQJ $GYDQFHG FRQJHVWLRQ PHFKDQLVPV IRU UHVLVWDQFH WR IORRGLQJ DQG PDVTXDUDGH DWWDFNV
- 33. Stream Control Transmission Protocol (SCTP) %WHV :KDW LV WKH VWUXFWXUH RI 673 Source Port Number ELWV
- 34. Destination Port Number 5RZ MTP-3 User Part Verification Tag M3UA Checksum Chunk Type ´ ´ SCTP Chunk Flags Chunk Length Chunk Value field ( information to be transferred in the chunk) ´ 1´ 673 +HDGHU 673 3DORDG HJ 08$ PHVVDJH
- 36. MAP CAP T CAP INAP B S S AP R ANAP B ICC S CCP M3UA S CT P (16+B ytes ) IP v4 (20 bytes ), IP v6 (40 bytes ) Gbe,AT M, etc. IS UP H.248 RT P UDP (8) T CP (20)