From: Stephen Hayes (PL/EUS) [stephen.hayes@ERICSSON.COM]
Sent: 11 December 2006 17:58
To: 3GPP_TSG_SA
Subject: Chairman's Summary of SA#34

Dear Colleagues,

Please find below my summary of major decisions from SA#34. It serves to highlight key agreements reached during the meeting and forms the basis of the summary of the SA meeting on the 3GPP web site. I have not included the specific guidance to the SA WGs as the WG chairs and MCC provide that guidance to the WGs. Please let me know any errors or omissions.

A recent joint meeting between TISPAN WGs and 3GPP WGs resulted in a short term decision to maintain parallel stage 3 specifications for IMS multimedia telephony services. Such a working arrangement is not optimal and it was noted that there are ongoing efforts at the PCG/OP level to investigate possibilities for transferring IMS related work in TISPAN into 3GPP to avoid situations such as this. As a result of the latest IMS Workshop, options for opening up the IMS requirements process are also being looked at. This work is being done by the IMS OP Ad-Hoc of which the CT and SA chair are members. The SA chair will endeavor to keep SA informed of the progress of this activity. It was decided not to delay any SA WG elections as it was unclear when the OP level recommendations (if any) would become effective.

SA2 requested that SA resolve a deadlock between two competing SAE architectures. After extensive discussion, guidance was given to SA2 in the form of documents SP-060925 and SP-060926. This provides a compromise architecture as well as guidance on how to structure work between the 3GPP and non-3GPP accesses. Although these documents capture the consensus of SA, some companies felt that the consensus obtained regarding functionality of the 5a interface was too weak. However, SA2 still has many key architectural issues to address as documented in the endorsed SAE workplan (SP-060937). It is therefore requested that any challenges to SP-060925 be directed towards SA instead of SA2, so that SA2 can proceed with the remaining SAE architectural issues.

A SA Workshop on LTE GSM Handovers is planned for January 10-11 (SP-060894). SA1 input is provided to the workshop (SP-060853).

Some other specific decisions by the SA plenary were:

- A proposal to introduce Operator Determined Barring (ODB) for IMS in Rel 7 was rejected as being new functionality. There were concerns that requirement was not sufficiently clear to drive the stage 2 and stage 3 work. This new functionality may be considered for Rel 8. ODB for I-WLAN was however re-introduced into Rel 7 since it now seems possible to provide this functionality in the Rel 7 timeframe.
- The study on GSM Direct Mode Operation (DMO) was not agreed (SP-060784). SA1 is requested to provide additional clarification on the scope and frequency bands targeted for this work as well as identifying key regulatory issues and liaise with GERAN WGs on the implications of this work.
- It was agreed that stage 3 work on Personal Network Management (PNPAN) can proceed in CT since it has been difficult to identify any architectural impacts. The CT groups are requested to inform SA2 of any architectural issues they identify (SP-060920).
- CT wishes to retain support of conferencing floor control in Rel 7. Protocol support of conferencing policy does not seem possible. SA1 should ensure that there is requirement alignment with the Rel 7 stage 3 requirements.
- A working assumption was taken that LTE access using 2G SIMs shall be prohibited. Companies are asked to bring in arguments to the contrary by SA#35. Otherwise prohibition of LTE for users with 2G SIMs shall be taken as a requirement.
- It was agreed that support of HTTP Digest should be documented in “Coexistence between TISPAN and 3GPP Authentication Schemes” since there are coexistence issues and it is clearly documented that HTTP Digest is not applicable to 3GPP access networks.
- It was noted that SA4 has reached a compromise on Dynamic and Interactive Multimedia Scenes (DIMS) that combines the best from the LASeR and MORE candidates.
- SA1, SA2, and CT4 are requested to provide feedback on the SA5 Common Profile Storage (CPS) Framework (SP-060929).
- It was agreed that a WID for subscriber identification to support MVNOs (SP-060927) should be more properly led by SA5 instead of SA1 since SA1 work on this issue appears complete. Further discussion of this WID should occur in SA5
- SIP based IMS trace is not progressing and again needs to be moved out of the current release (Rel 7). The critical dependency is work in the IETF where some resistance to the concept is expected. SA5 is asked to ensure that there continues to be support for this work item in Rel 8 with the understanding that supporting companies will need to actively push this item in IETF.
- The LS endorsing the ITU-R M.[IP.CHAR] recommendation was endorsed by SA (SP-060886). In consultation with ITU-T SG19 leadership, it was agreed that the production of Q.1741.5 (Rel 7 specs) should be based upon the September 2007 specifications. This aligns with the proposed production of RAN input into M.1457.8.

March 2007 (May 2007 for GERAN) continues to be the goal for freezing of Rel 7. Stage 2 exceptions were granted for

- PS domain and IMS impacts for supporting Emergency calls
- GPRS One Tunnel
- CSI Terminating Session Handling
- Study on IMS Enhancements and Optimisations
- LCS for I-WLAN
- SMS over IP
- LI for MBMS
- Mixed Mode of Bearer Control (does not imply SA endorsement of mixed mode)

Requests for stage 3 exceptions should be documented using the template in SP-060939 and presented at SA#35. The overall workplan for 3GPP is documented in SP-060940.

GERAN has several WIDs with expected completion dates that extend well beyond the proposed March Rel 7 cutoff. It was agreed that GERAN will analyze these items and bring in recommendations for which release they should be part of into SA#35.

At SA#35, there we will attempt to set a freeze date for the R8 stage 1 specifications.

According to the results of the MCC satisfaction survey, delegates are quite satisfied with MCC performance. An MCC expert to replace Yoshikazu Ishii for RAN1 is still solicited.

Several issues related to working procedures were discussed:

- MCC should not “improve” WG agreed CRs to make them more readable
- MCC shall clearly identify when the document in CR is different from the WG agreed version. The preferred way is to use a different WG document number
- It was agreed that CRs which are corrections to implementation errors shall have their source to Plenary marked as “MCC”.
- Companies are asked to bring to SA#35, any concerns they have with expanding the CR database to provide the “Source to WG” and “Source to Plenary” fields matching the CR cover sheets.
- It was agreed that all SA WGs will transition to early allocation of CR numbers.
- SP-060699 raises concerns about handling of alignment CRs. Discussion of modifications to the working procedures relating to this will be taken via e-mail (SA list).
- SP-060700 raises concerns about the release independence of WIDs and associated SIDs. Discussion of modifications to the working procedures relating to this will be taken via e-mail (SA list).
- SA will introduce a few trial rapporteur reports at SA#35 to see if it helps to coordinate complex areas.

The following new TSs were approved: TS 22.278 Service Requirements for Evolution of the 3GPP System (SP-060783), a large number of O&M TS’s in the 32.xxx series (SP-060736, SP-060740 – SP-060752), TS 33.110 Key Establishment between a UICC and a Terminal (SP-060807).

The following new TRs were approved: TR 22.982 Study of Customised Alerting Tones (CAT) Requirements (SP-060778) and TR 32.809 Study of XML-based (SOAP/HTTP) IRP Solution Sets (SP-060755).

Several new work items (WIDs) were approved: Notification XML Schema (SP-060754), Support of Customized Alerting Tone Service (SP-060779), LCS for 3GPP Interworking WLAN (SP-060818), Key Establishment between a UICC hosting device and a remote device (SP-060839), Support of Service-Level Interworking for Messaging Services (SP-060915), WLAN NSP (SP-060932), IMS Enhancements for Security Requirements in Support of Cable Deployments (SP-060933).

Several WIDs were updated: Subscription Management (SuM) IRP Solution Sets (SP-060739) – to add production of 32.665, Multimedia Priority Service Requirements (SP-060780) – editorial corrections, One Tunnel Solution for Optimisation of Packet Data Traffic (SP-060819) – to add a deployment guidelines TR, 3GPP System Architecture Evolution Specification (SP-060926) – to capture SA meeting agreements.

Several new study items (SIDs) were approved: Study of Management for LTE and SAE (SP-060753), Study on Value Added Services for Short Message Service (SP-060786), Non 3GPP Access NSP (SP-060930), Requirements for Seamless Roaming and Service Continuity between Mobile and WLAN Networks (SP-060936).

Several SIDs were updated: Study on Support of a Public Warning System (PWS) (SP-060781) – to indicate that requirements from other regions may differ, Paging Permission with Access Control (SP-060785) – to add TR number, Transferring of Emergency Call Data – In-band Modem Solution (SP-060935) – to add various clarifications to the scope.

Elections for TSG officers will occur in March 2007. The official announcement will be forthcoming from the MCC. A seminar celebrating the 20 year anniversary of GSM will be held immediately following SA#35.

2006 was a busy and productive year. Thanks to all of you, 3GPP is clearly established as one of the leading standardization bodies in the world. Success comes with a price. 2007 looks to be the busiest year yet. Rel 7 must be completed, SAE and LTE must be specified, and we must cope with the industry wide acceptance of IMS. Enjoy the well earned break during the holidays as the travel will soon start again.

Stephen Hayes
3GPP TSG-SA Chair
Ericsson Inc.
Tel: +1 817-491-4015
Fax: +1 817-977-8920
Mobile: +1 469 360 8500
mailto:stephen.hayes@ericsson.com