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3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 Meeting Report of 3GPP SA3 LI#29 Vancouver 22-24 April 2008 Management Team: Chairman: Bernhard Spalt Nokia Siemens Networks Vice Chairman: Alex Leadbeater BT Meeting Secretary: Ian Cooper NTAC List of participants: see annex A List of action points: see annex B 1 Welcome The Chairman welcomed delegates to Vancouver, and thanked Peter Musgrove and North American Friends of 3GPP for the meeting arrangements. 2 Apologies Apologies were received from Peter van der Arend and George Babut. 3 Election of Chairman and Vice Chairman There were no further nominations for these positions and Bernhard Spalt and Alex Leadbeater were re-elected for another period of office to the acclaim of the meeting. 4 Approval of Agenda SA3LI08_020r1 This was accepted without change. The Chair noted that topics may not be handled according to the sequence within the Agenda for the following reasons: : CR‟s on one topic for several specifications Give delegates the change to update / draft Tdoc‟s for the next day Availability of necessary/interested delegates 4.1 Code of Conduct: 1 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 When attending a 3GPP SA3 LI meeting it is expected that each delegate will give the utmost respect to other delegate‟s personal and company possessions. A delegate must not attempt to invade other delegate‟s computers or read their papers without explicit permission. Anyone found violating this trust will be asked to remove himself or herself from the meeting. The offending person will not be welcomed at future meetings and SA3 LI will request the company send another delegate. For your information, a method of protecting your computer from piracy may be found at: http://www.Brookson.com/gsm/howto.htm 4.2 IPR Call Reminder The Chairman reminded delegates of their company's obligations under their SDO's IPR policies: The attention of the delegates to the meeting of this Technical Specification Group was drawn to the fact that 3GPP Individual Members have the obligation under the IPR Policies of their respective Organizational Partners to inform their respective Organizational Partners of Essential IPRs they become aware of. The delegates were asked to take note that they were thereby invited: - to investigate whether their organization or any other organization owns IPRs which were, or were likely to become Essential in respect of the work of 3GPP. - to notify their respective Organizational Partners of all potential IPRs, e.g., for ETSI, by means of the IPR Statement and the Licensing declaration forms (http://webapp.etsi.org/Ipr/). There were no IPR calls from meeting delegates. 5 Approval of last meeting report SA3LI08_021 This was agreed. 5.1Review Action Points 2007 Name Action Item Status AP07-07 Bernhard, Jean T Investigate VCC correlation using call Ongoing- and Alex id and p-charging vectors proposal is to use this method but detail needed. AP07-17 Dionisio SA3LI07_105r2 was missed after the Closed but Zumerle MCC update. Dionisio Zumerle will SA3LI08_39 raised here to handle this make editorial corrections 2 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 6 Reports of other bodies which are relevant to SA3-LI 6.1 SA#39 (held 10-13 March 08, Mexico) Our CR presented for approval at this meeting was agreed, but there was an implementation problem in 33.107 v. 8.3.0. Dionisio Zumerle was aware of this and introduced a CR, Tdoc SA3LI_039 to make the necessary correction. This is action point AP07-17 above. It was agreed that in the future, after the MCC update process, an email will be sent out by Dionisio to SA3LI members to allow one week for peer review. 6.2 SA WG3 SA WG3 had been held the previous week in Vancouver and Dionisio Zumerle introduced an LS forwarded from that meeting which originated at SA#39. The LS, SA3LI_033, contained a list of features which are to be retained for Release 8 work and a list of features to be removed, the most notable of which is MBMS. Alex Leadbeater said that there was no great impact for SA3LI and a reply LS was not needed. The LS was noted. Berthold Wilhelm had been present at SA3 WG3 and said that the main aim of the group is to finalise Release 8 specifications. There will be further meetings at the end of September and in November to achieve this. 6.3 ETSI TC LI Alex Leadbeater reported that there had been a rapporteur‟s meeting in Mainz for the Retained Data Handover Interface (RDHI) WI. This had been very constructive and many outstanding issues resolved. At some point the document will need to be reviewed by SA3 LI but not at this juncture. 6.4 WTSC-LI Peter Musgrove reported that this group would be meeting week commencing 28 April in Miami. Topics to be discussed include PoC for which the FBI have some contributions, Canadian location update requirements and the fixing of some issues in LAES for VoIP. Of particular interest to SA3 LI will be proposals on how to address US specific issues which are deltas to 33.106, 33.107 and 33.108. He further reported on joint discussions with the PTSC group regarding VoIP mapping tables for WiMAX LAES VoIP. A further joint topic is LI for NGN both fixed and mobile. 6.5 TISPAN WG 7 Alex Leadbeater said that a colleague from BT attended the last meeting where there was a concern over the approach SA3 LI is proposing for Common IMS. This concern is reflected in LS SA3LI08_022 from TISPAN. 3 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 6.6 PTSC LAES and WiMAX Ron Ryan reported that ATIS PTSC currently has five active projects: 1. Supplement-A to ATIS-1000013.2007 LAES for Internet Access and Services (IAS): IAS provides LI support for IP broadband data internet access (e.g., DSL, WiFi, WiMAX, Cable). The supplement addresses corrections, clarifications, and enhancements. The projection is the supplement will be completed and ready for balloting at the end of April ‟08. 2. Supplement-B to ATIS-1000678.2007 LAES for VoIP (678): 678 provides a „mapped‟ (SIP-to-025) LI solution for VoIP. The supplement will address corrections, clarifications, and enhancements. Work has just begun. The projection is the supplement will be completed and ready for ballot at the end of July ‟08. 3. LAES for Advanced Conferencing Services (ACS): ACS addresses LI support for network based advanced conferencing services such as arranging for „meet-me‟ conferences. The work is maturing. The scope is limited to subject initiated conferences. The projection is the Technical Report will be completed and ready for ballot at the end of August ‟08. 4. ATIS-1000013.2007 IAS Implementation Guide (IAS-G): IAS-G is a new project to provide implementation guidelines for IAS. This Technical Report is planned for completion and ballot ready at the end of October ‟08. 5. LAES for Next Generation Networks (NGN): The work on NGN is progressing slowly. Architecture issues have been resolved. The current view seems to be that existing LI capabilities (e.g., LI capabilities for broadband data access [the IAS standard] and VoIP [the 678 standard]) are adequate with only a need to investigate Voice Call Continuity (VCC). This Technical Report is planned for completion and ballot ready at the end of August ‟08. Ron also provided this update on WiMAX LI: the North American WiMAX broadband data access LI capabilities are being based on the ATIS-1000013.2007 IAS. Liaisons and information are being exchanged between WiMAX and ATIS. WiMAX is seeking copyright permission for use of the ATIS material. Mobility aspects of WiMAX, such as roaming, are being handled in WiMAX. 6.7 TIA TR-45.6 LIG Ron Ryan reported that this group currently has two active projects: 1. cdma2000 WLAN Interworking (WLAN-I): WLAN-I provides support for lawful intercept of broadband data via a wireless LAN access into a cdma2000 network. The proposed standard is in ballot. The ballot comments are expected to be addressed by June ‟08. Unless the three No votes can be resolved, another ballot is likely. If another ballot is required the earliest projected date for publication is 3Q08. 4 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 2. J-STD-025-0B cdma2000 Packet Data Study: A study of the impact of the DoJ deficiency petition to the FCC on the cdma2000 Packet Data solution in J-STD- 025-B. The study has not begun and will likely start after addressing the WLAN-I ballot comments. 6.8 Other bodies The WiMAX Forum, which was mentioned by Ron Ryan, has been working on an LI document. This will soon be ready for review for which a process exists. . The Chairman reported that he made a presentation on 3GPP at ISS Dubai. 7 Incoming liaisons SA3LI08_022 Request for joint meeting to develop common IMS interception in 33.107 - TISPAN WG 7 This was discussed in 6.5 above, the report from TISPAN WG 7, and requests a joint meeting to address TISPAN concerns over the way that SA3 LI is planning to implement LI for Common IMS. The LS was noted and considered by the meeting. The Chairman suggested holding a conference call with TISPAN WG 7 followed by a joint meeting before the next SA3 LI meeting in August. Alex Leadbeater offered to draft a response to the LS which clarified the approach being taken and proposed two dates – 11 June for the conference call and 25 August for a joint meeting in Sophia Antipolis. This was agreed as SA3LI08_043. SA3LI08_033 LS on Release 8 non-essential SAE features SA#39 This was addressed previously in 6.2, the report from SA WG3. There was no need for a response LS. SA3LI08_035r1CAT(Customized Alerting Tones) interactions with LI CT4 Alex Leadbeater summarised the LS from CT4. It requested SA3 LI‟s response to the need to provide LI for the user programmable alerting messages which will be a feature of Rel-8. The LEA members of the group confirmed that it would be requirement for LI but that further time was necessary to study the precise details. Koen Jaspers and Jean Trakinat agreed to write a LS response which was agreed as SA3LI08_040 Response LS to CT4 regarding CAT functionality 5 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 8 TS 33.106 Rel. 7 and Rel. 8 8.1 Release 7 33.106v7.0.1 No input 8.2 Release 8 33.106v8.0.0 No input 9 TS 33.107 Rel. 7 and Rel. 8 9.1. Release 7 33.107v7.7.0 No input 9.2. Release 8 33.107v8.3.0 SA3LI08_023 CSCF SIP Event Reporting BT Group Alex Leadbeater presented this Tdoc as a result of Rel-8 changes whereby in certain scenarios the CSCF may change the original SIP messages. The CR clarifies that the CSCF must deliver both original and changed messages to LEAs. After comments from Maurizio Iovieno and Ron Ryan this was agreed at SA3LI08_023r1. SA3LI08_031 General updates on TS 33.107 to support LI for EPS Ericsson Following on from his work in analysing LI for the Enhanced Packet System of Rel-8, Maurizio Iovieno presented this CR with the general updates needed for TS 33.107. It also introduced the need for a new chapter X dedicated to LI for EPS, the detail for which is in the following CR in Tdoc 032. He proposed that the way forward was to combine the two after taking comments into account. There was broad agreement on the document. Some wished to accept it and proceed with work on 33.108 but others asked for more time for consideration before the next meeting. The Chairman proposed that 031 and 032 be combined into SA3LI08_42 as the outcome from this meeting with the aim being to agree the CR in Sophia Antipolis in August. SA3LI08_032 LI for EPS – E-UTRAN access Ericsson Maurizio Iovieno presented this second CR on LI for EPS which provides the detailed architecture and events for the new chapter X in 33.107. It is based on his Tdoc SA3LI08_28 which discusses involved nodes and events in LI for EPS. Alex Leadbeater made some detailed comments and Maurizio agreed to make changes and to combine this Tdoc with Tdoc 031 into SA3LI_042. There are still some open issues and this CR will not be presented yet but the document is the agreed position to take forward to the next meeting. SA3LI08_038 Updates on TS 33.107 to support “Common IMS” Ericsson Maurizio Iovieno presented this CR and explained that he aimed to re-use 33.107 and remove access dependent elements when specifying Common IMS details. He added 6 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 a new chapter X specifically for the Common IMS LI. There was a long discussion on Figure 1f. Peter Musgrove and Ron Ryan asked about the interface between the IMS media control node and the IMS media handling node which is standardised but not for LI purposes. Maurizio said there will be some LI additions. Rao Nagaraja queried references to MRFC and MRFP as they are not normally involved in IMS calls. The Chairman summarised by saying that it was not possible to agree the CR at this meeting. He asked the group for contributions to be sent to Maurizio in order for progress to be made at the next meeting. SA3LI08_039 Editorial corrections to TS33.107 Dionisio Zumerle This the correction referred to in 6.1 above and was agreed. 10 TS 33.108 Rel. 7 and Rel. 8 10.1 Release 7 33.108v7.9.0 10.2 Release 8 33.108v8.3.0 SA3LI08_024 MBMS LI 33.108 BT Group Alex Leadbeater presented this Stage 3 CR after his work on MBMS Stage 2. After discussions in the group it was agreed at SA3LI08_024r2. 11 Continued Discussion and New Business 11.1 Common IMS SA3LI08_036r1 Interface for COMMON IMS LI Handover ZTE Corporation Yu Meng introduced this contribution which was a discussion paper suggesting ways to address the needs of Common IMS LI in addition to that already covered in 33.107/8. In particular he noted the need to develop a general correlation method to associate CSCF IRI with bearer CC for different access scenarios. To illustrate likely changes, he tabled an example CR, Tdoc SA3LI08_41. There was discussion and some agreement for the proposals. Peter Musgrove said that companies who have both wireless and wireline access networks will have a single IMS and would support generic correlation and LI methods. The Chairman noted the Tdocs but said it was too soon to make a decision and asked for further contributions. SA3LI08_037 33.107 adding Common IMS details V.2.0 r2 Nokia Siemens Networks This document, tabled at the previous meeting in Sophia Antipolis, was presented for information. 7 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 11.2 Conference LI functions SA3LI08_034 Conference Events LI 33.107 TPS Jean Trakinat presented this CR with tracked changes against the previous draft of the working document. She noted that reporting of Floor Control events is for further study. In discussing the CR, Ron Ryan and Peter Musgrove both had issues with the case of the subject joining an associate‟s conference, Ron from a technical feasibility angle and Peter from a legality in the US position. Jean agreed to make this case “for further study” and to create a new chapter for IMS Conference Services in 33.107. The meeting then agreed SA3LI08_034r2. 11.3 EPS Evolved Packet System SA3LI08_028 LI for Evolved Packet System (EPS): involved nodes and events v 2.0 Ericsson This was a revision of Maurizio Iovieno‟s paper from the last meeting because of changes to TS 23.401 from SA2 and comments received. It, and the following Tdoc proposing parameters for events formed the basis of the two CRs in 9.2. After discussion the two CRs were merged into SA3LI08_042 which is the agreed position at the end of the meeting on LI for EPS. SA3LI08_029 LI for EPS: proposed parameters for events applicable to GTP based S5/S8 interfaces Ericsson The following reference urls were provided for information: TS 23.401 v 8.1.0 GPRS Enhancements for E-UTRAN access SA 2 http://www.3gpp.org/ftp/Specs/archive/23_series/23.401/23401-810.zip TS 23.402 v 8.1.1 Architecture Enhancements for non-3GPP accesses SA 2 http://www.3gpp.org/ftp/Specs/archive/23_series/23.402/23402-811.zip 11.4 Others SA3LI08_025 Need of new document / WI for SAE / EPS? Chairman In this Tdoc, the Chairman discussed the pros and cons of creating a new document for EPS LI or adapting the existing 33.107/8. Dionisio Zumerle said that SA wish to fresh all Rel-8 Stage 2 work at the next plenary in June. Given the time pressure, the only conclusion is to adapt the existing specifications. SA3LI08_026 IMS CC Dynamic Triggering (in common IMS?) BT Group Alex Leadbeater presented his proposal to the meeting following on from his related paper at the previous meeting and an email discussion. His view is that with complex call scenarios in the future involving multiple service providers, there is a need to 8 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 develop a standardised triggering interface within the Common IMS sections of 33.107/8. This would be for Rel-9 at the earliest. Terry Jacobson wondered whether passing LI information across networks was allowed. Peter Musgrove said this was prohibited in the US at the moment. It was clear such a triggering interface would have to be well secured. It was believed to be possible in Germany. Ron Ryan said there might be existing solutions from bodies such as Packetcable and the IETF which could be used. The Chairman summed up by inviting contributions to the topic for consideration at the next meeting. SA3LI08_027 CC Decryption and Encryption Key Handover BT Group In this Tdoc, Alex Leadbeater advised the meeting that he is planning to raise a work item in TC LI to report on the standardisation of encrypted media and key handover. He said that there may be some involvement with SA3 for guidance on mobile specific issues. The Tdoc was noted. 12 Review meeting output / agreed The following documents were agreed as CRs: SA3LI08_023 r1 CSCF SIP Event Reporting BT Group SA3LI08_39 Editorial Corrections on 33.107 MCC SA3LI08_024r2 MBMS LI 33.108 BT Group SA3LI08_034r2 Conference Events LI 33.107 TPS The following document is the agreed position at this meeting for LI for EPS combining SA3LI08_31 and SA3LI08_32 but is not ready to go forward as a CR yet : SA3LI08_042 LI for EPS Ericsson The Chairman asked for further input and for work to start on Stage 3 of LI for EPS. 13 Outgoing Liaisons SA3LI08_040 Response LS to CT4 regarding CAT functionality SA3LI08_043 LS on Common IMS LI to TISPAN WG4 9 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 14 Meeting dates and venue for next meeting Organisation Meeting Date Meeting Venue Sponsor Notes SA#40 2. – 5. Jun. „08 Prague SA3#52 23 - 27 Jun „08 Sophia SA3 LI 25 Aug 08 Sophia Antipolis Joint with TISPAN /TISPANWG WG7 7 SA 3 LI#30 26. – 28. Aug. ‟08 Sophia Antipolis SA#41 15. – 18. Sep. „08 JP SA3#53 13. – 17. Oct.„08 SA3 LI#31 11. – 13. Nov.‟08 Washington DC SA#42 8. – 11. Dec.‟08 Athens 10 3GPP TSG SA WG3-LI#29 SA3L Vancouver, Canada, 22-24 Apr. 2008 Annex A List of participants Name Role Organization National Cooper, Ian Attendee Technical Assistance Daly, Brian Attendee AT&T K. Iovieno, Telefon AB LM Attendee Maurizio Ericsson Jacobson, Attendee Alcatel-Lucent Terry Jaspers, Attendee PIDS Koen Leadbeater, ViceChairman BT Group Plc Alex FED. MINISTRY Marxt, Attendee FOR Walter C. TRANSPORT Meng, Yu Attendee ZTE Corporation Musgrove, Attendee AT&T Peter Nagaraja, Nokia Siemens Attendee Rao Networks Ryan, Ronald D. Attendee Nortel Networks (Ron) Schmalbach, Attendee BMWi Ralf Spalt, Nokia Siemens Chairman Bernhard Networks Steinrücke, Attendee BfV Gerd Trakinat, Attendee TPS Jean Wilhelm, Attendee BMWi Berthold Zumerle, Attendee ETSI Secretariat Dionisio Annex B List of actions Number Name Action Item Status AP07-07 Bernhard, Jean T Investigate VCC correlation Ongoing-proposal is and Alex using call id and p-charging to use this method but detail needed. vectors 11
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