TSG#26 Highlights

What is a Release? | What's in Release 5?| What's in Release 6?
| TSG T | TSG CN | TSG SA | TSG RAN | 

Previous Highlights: TSG#25 | TSG#24 | TSG#23 | TSG#22
TSG#21 | TSG#20 | TSG#19 | TSG#16 | TSG#15

Welcome!

Welcome to the latest edition of TSG Highlights! The aim is to provide you with a concise summary of the decisions and actions of the most recent 3GPP Technical Specification Group meetings held in December 2004 in Athens, Greece.

3GPP has five TSGs: CN (Core Network); RAN (Radio Access Network); T (Terminals); SA (Services and Systems Aspects)and GERAN (GSM EDGE Radio Access Network). This summary reports on the first four of these, as GERAN meetings take place separately from the other TSGs.

Please note, these summaries to do not constitute formal, approved reports of the meetings – they are opinions only and also may not be complete. They are offered for guidance only.

What's in a 3GPP Release?

For an overview of 3GPP Release 99, Release4 and Release 5 please have a look here >>>. These documents have been produced by the ETSI Mobile Competence Centre and each is a summary of the Features contained in each of the above Releases.

What's in Release 6? What's the schedule? What follows that?

The expected contents of Release 6 (and even what lies beyond Release 6) can be found in the 3GPP workplan .

TSG-T (Terminals)

 At its recent meeting in December 2004 in Vouliagmeni near Athens, Greece, TSG-T has been working on the maintenance of the existing Releases, and has completed most of its work on Release 6. Work on testing always follows the main specification task, and this is so for User Equipment (UE) testing, which is ongoing for Release 99, Release 4, and for Release 5 (see the "Testing" section below).

Maintenance work was performed on the existing Releases of Multimedia Messaging Services (MMS) specifications, functional improvements were made to several areas, and new functionality was added to Release 6. MMS Release 6 will add new functionality to the existing MMS standard in several areas which will further enhance the user experience. The functional enhancements approved at this meeting were the support of replacing and cancelling Multimedia Message in the Recipient Terminal, the support of deletion of deferred MMs from the MMS Relay/Server, the addition of recipient handset capabilities in the MM7_delivery_report.REQ and MM7_deliver.REQ transactions, the addition of an error situation in MM7_Deliver.RES, the addition of the Information Elements VAS-ID and VASP-ID in MM7_DeliveryReport and MM7_ReadReplyReport. TS 29.140 MMS, MM10 interface based on Diameter protocol, stage 3 was approved as a Rel-6 specification. With this, the MMS work on the MMS core spec 23.140 Release 6 is basically complete.

Several CRs on AT commands to TS 27.007 were approved including the addition of AT commands for the support of EAP authentication +CEAP and the UICC Application Discovery Command +CUAD.  More work seems required in the area of improving security in UICC generic access command +CGLA. It might be necessary to prevent illegal or accidental use also in other than the GSM contexts.

An LS was approved (TP-040287) to 3GPP2 and OMA on the Status of MMS work in TSG-T reporting about the completion of MMS Rel-6 and that there are currently no MMS Rel-7 work items.

An LS was approved (TP-040298) to 3GPP2 on the support of 3GPP2 MMS parameters. TSG-T advises 3GPP2 TSG-C to point to USIM specifications (here, TS 31.102) rather than to SIM specifications.

A large number of Change Requests were approved on (Universal) Subscriber Identity Module (SIM/USIM) related subjects. Most of the outstanding Release 6 work was completed at this meeting.

Several functional enhancements were approved to TS 31.102 Characteristics of the USIM application. Amongst them are the Introduction of EHPLMN data field, Interpretation of  “data”  in EF_CFIS, Enable multiple Terminal Profile downloads in UST, Storage of the lifetime of the GBA_U bootstrapped keys.

Several functional enhancements were approved to TS 31.111 USIM Application Toolkit (USAT). Amongst them are the Clarification of Terminal Profile procedure, Display Multimedia Messages from the USIM, UICC initiated GBAU Bootstrap.

Significant enhancements were also done to the USIM/USAT related test specifications.

TS 31.048 Rel-5: Test specification for TS 23.048 was approved. The document covers the minimum characteristics considered as necessary in order to provide compliance to 3GPP TS 23.048 " Security Mechanisms for the (U)SIM application toolkit; Stage 2".

TS 31.124 Rel-6: Application Toolkit (USAT) conformance specification was presented for information.

Joint meetings between TSG-T and TSG-CN, and between TSG-T and TSG-RAN were held regarding the upcoming TSG restructuring. Several transition details were decided. The Terms of Reference for TSG-CT and for the "new" TSG-RAN were endorsed. March 2004 will be the last meeting under the existing structure.

TSG-T endorsed the proposals from T1, T2, T3 regarding specification upgrades.

An updated version of the Release 4 overview document was presented (TP-040277).

Testing

Progress was reported on the area of Tree & Tabular Combined Notation (TTCN) test case development. The high pace of TTCN test case approvals has been maintained. GCF (Global Certification Forum) Batch 1: 94 test cases; GCF Batch 2: 84 test cases; GCF Batch 3: 82 test cases, GCF Batch 4: 72 test cases. The important milestone of completing 80% of all batches was achieved in time. This should allow the commencement of 3G Certification by GCF which is currently planned for February 2005.

The proportion of complete Radio Resource Management (RRM) tests is now approximately 95%. There has been good progress on outstanding RRM test cases.

Good progress on HSDPA was reported. Protocol tests are now 82% complete and RF tests are now 87% complete. There was no input for TDD RF. 10 new HSDPA RRC test cases were introduced. HSDPA tests are being considered by GCF prioritisation based on T1 output.

TDIA continues to supply experts to work alongside STF 160 to develop LCR TDD TTCN. 197 test cases have been coded. Target is to code around 400 tests in 2005. 33 man months required to continue its work at ETSI in 2005. TDIA committed to providing 17 man months (voluntary) on site.

6 new A-GPS tests introduced to TS 34.123 – 1. Tests for UE-based and UE assisted to cover GPS assisted emergency calls to cover transfer of positioning results to third party and privacy options. Adequate assistance data defined for UE assisted. Regarding RF, 6 tests introduced from RAN4 core specification TS 25.171. A new test specification was presented for information TS 34.171 Assisted Global Positioning System (A-GPS) Performance Frequency Division Duplex (FDD). Work estimated 50% complete.

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 TSG-SA

The 26^th meeting of TSG SA took place in Vouliagmeni near Athens, Greece, starting Monday 13^th and finishing Thursday 16^th of December, 2004. It gathered together 145 participants and 225 documents were handled.

Cooperation with external fora

ITU

2 LSs were received from ITU:

• SP‑040829. The ITU Study Group Management Team requested further comments on the draft Technical Report Q.TRMMR on Mobility Management Requirements. The 3GPP companies were asked to individually analyse the TR and provide any comments back to ITU.
• SP‑040878. on the 3GPP Answer on "Mobility between H.323 Multimedia Systems and GPRS/IMT2000 Networks". ITU T SG16 had reviewed the points mentioned on the LS from TSG SA and will take the points mentioned into account when progressing their work on "Mobility between H.323 Multimedia Systems and GPRS/IMT2000 Networks".

Updated information on the Roadmap for IMT-2000 CDMA DS and IMT-2000 CDMA TDD, with reference to the main technical areas under investigation within 3GPP TSG RAN to ITU-R is provided by RAN in SP-040909.

OMA

3 LS were received from OMA:

• SP‑040711 on Availability of OMA Work Programme Information. It is understood that further communication on this could be expected from the OMA.
• SP‑040715 on the Status of OMA BAC: Mobile Broadcast Services, asking both 3GPP and 3GPP2 to provide feedback on applicability of the preliminary OMA Mobile Broadcast Services architecture to their broadcast-multicast work items. SA1 were asked to study this and provide feedback to OMA if necessary.
• SP‑040874 which encouraged 3GPP to review the status of IMS in OMA and provide any feedback if appropriate. TSG SA decided to send it to the SA2 e-mail list in order to determine if there are any comments from the Architecture experts.

Release 6 content and timing

Release 6 was functionally frozen at this meeting. The process, provided in SP‑040927, is the following:

• Features already completed belong to Release 6.
• Items which are near completion, but expected completion by March 2005 will be reviewed for completion at the next meeting. This includes Features that have strong industry interest to be included in Release 6 and some items awaiting IETF work completion in order to confirm their completion.

Features which are not completed, or in the list of "near completed" items belong to Release 7 or higher.

Fixed access or "NGN" (TISPAN)

ETSI EP TISPAN sent a liaison to TSG SA in SP-040869 and proposed for a second Workshop on "IMS over Fixed Access". Participation in such a workshop was considered beneficial and a reply to to TISPAN on this was provided in SP-040929.

Progression of work on WLAN Interworking Scenario 4 & 5.

TSG SA noted that the All-IP Network work is likely to need session continuity in general as well as between I WLAN and 3GPP systems. TSG SA asked SA1 to take a co-ordinated approach on work on session continuity. SA1 were asked to consider additional requirements to allow for a smooth evolution of the 3GPP System and to take note of the work in SA2 on the Work Item "Feasibility Study on 3GPP System Architecture Evolution". The work should take into account the specification work resulting from the AIPN Feasibility Study.

Other issues

GALILEO work is stalled due to the unavailability of the GALILEO specifications. Efforts were requested from the 3GPP Members who are also involved in the GALILEO Project to resolve this problem.

Meeting locations for 3GPP TSG and WG meetings was discussed (SP‑040873). TSG SA strongly recommended that before accepting an invitation for a meeting which is not within easy reach, the delegates should be asked whether there is a problem for attendance. The current rules for meeting venues were considered adequate to avoid most of the problems outlined by the contribution. In addition to consideration of the geographic distribution of Members, also take into account that meeting location is reasonably easy to reach for the delegates. 

Working Groups Matters

SA1

SA1 Work progressing on Rel-7 work items particularly AIPN, XIX, Fine tuning of the work items. New WID on CAMEL trunk triggers and have agreed a number of essential corrections to earlier releases.

All CRs, except those in SP-040725 and SP-040726 were approved.

2 Rel-7 TRs were provided for information and were noted.

1 GUP WID was revised and a new one on CAMEL Trunk Triggers was approved. A proposed new WID on Combinational Services was combined into an SA2 WID.

SA2

SA2 is working on the following Release 6 aspects: Overall Architecture, GPRS Stage 2, QoS, IP Flow Based Bearer Level Charging, IMS Phase 2, WLAN, GUP Stage 2,  MBMS Stage 2, Network Sharing, Location Services Stage 2, PoC, IPv4 based IMS implementations and CS Voice and Video. For Release 7, SA2 works on Access Class Baring and Overload Protection, Combination of CS and IMS, PS domain and IMS impacts for supporting IMS Emergency calls and Study on E2E QoS Enhancements. The study on the applicability of GALILEO for LCS has received no recent contribution.

One new TR and one new TS were approved: TR 23.903: "Redial Solution for Voice-Video Switching" and "TS 23.979: 3GPP enablers for OMA PoC Services".

One new TR was presented for information (v.1.0.0): TR 23.903 on " Redial Solution for Voice-Video Switching".

All CRs, except 23.125 CR 076r1 and CR 082r1 (in SP‑040875), were approved.

A new WID on "Combining CS and IMS services & Capability Detection and Exchange mechanism" (SP‑040926) and an updated WID on "PS domain and IM CN subsystem support for IMS Emergency sessions" (SP‑040746) were approved.

SA3

SA3 works on defining the security mechanisms for IMS, MBMS, UTRAN and GERAN access, WLAN inter-working,  Presence, as well as on Lawful Interception, Generic Authentication Architecture (GAA, containing several aspects) and on Network domain security (MAP layer, IP layer, and authentication framework).

One TR was provided and noted for information to study the impacts on other Groups: TR 33.878-100 "Security Aspects of Early IMS". It was agreed that this will become a 33.9xx-series document for referencing purposes.

All CRs, except the alternative CRs due to the late completion of PKS-TLS from the IETF (SP‑040890) were approved. It was agreed to postpone a decision on the inclusion of PKS-TLS until March 2005 and to review the IETF completeness at that time.

3 new WIDs were approved: "Trust Requirements for Open Platforms in 3GPP", "3GPP backup algorithm work, UEA2&UIA2" and "Access Security  Enhancements".

SA4

SA4 is working on codec aspects of Packet Switched Streaming Services, Multimedia Messaging Enhancements, Speech Recognition Framework for Automated Voice Services, IMS Messaging and Support of Presence Capability, MBMS user services. SA4 also works on defining formats and transport/application protocols using MBMS, Extended AMR-WB codec, media codecs, Performance Characterisation of Default Codecs for PS Conversational Multimedia Applications, Codec Enhancements for Packet Switched Conversational Multimedia Applications and CS Multimedia Telephony Service Terminal (3G-324M Improvements).

It was decided by TSG SA that both the Enhanced aacPlus and AMR-WB+ Codecs should be recommended and that no Codec will be mandated.

Three TSs and TRs were approved:

• TS 26.177 "Speech Enabled Services; DSR Extended Advanced Front-end test sequences".
• TR 26.943 "Recognition performance evaluations of Codecs for Speech Enabled Services (SES)".
• TS 26.141 "IP Multimedia System (IMS) Messaging and Presence; Media formats and Codecs".

One TS was noted: TS 26.346 "Multimedia Broadcast/Multicast Service; Protocols and Codecs".

One new WID was approved (Rel-7) on Video Codec Performance Requirements.

All CR were approved.

SA5

SA5 works on the definition of Subscription Management, Charging Management (at the Bearer level, for IMS, and for the Service domain) and OAM&P (Operations, Administration, Maintenance and Provisioning) related to Subscriber and Equipment Trace, Subscription, Performance and Network Infrastructure.

Nineteen TSs were approved to be raised in v.6.0.0 in different areas. One TR was approved and one TS was provided for information.

Eight revised WIDs were approved and one new WID on "MBMS charging (MBMS-CH)" was approved.

All CRs, except editorial changes in 32.102 CR037, were approved.

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TSG-RAN (Radio Access Network)

TSG RAN meeting #26 took place in Astir Palace Hotel, Vouliagmeni Athens, Greece. The meeting started at 9:00 on Wednesday 8^th December 2004 and finished at Friday 10^th at 12:45. 109 participants were registered and 161 documents were submitted.

The approved Change Requests to TSG RAN specifications are summarized in the following table:

Organization issues

The re-organization of 3GPP TSGs had been approved at 3GPP PCG meeting #13. A new TSG RAN (the name is preserved) is created, inheriting the WGs from TSG RAN and WG1 from TSG T.3GPP PCG had also tasked TSG RAN and GERAN chairmen to look at ways for a future merge of these two TSGs, with the goal of overall cost reduction.

RAN WGs had reviewed their Terms of Reference in their last meeting. As a result, revisions are proposed for WG1 and WG3. In the first case, the proposal was debated due to a possible overlap with WG4 scope, and finally postponed for March. The latter was approved without comments.

A joint TSG T/TSG RAN meeting took place to handle organization issues and Terms of Reference of the new TSG RAN. The following points were discussed:

• It was agreed that current TSG T WG1 will be renamed TSG RAN WG5

• After a long on-line drafting, the new Terms of Reference were endorsed. Approval will take place at 3GPP OP.

• It was agreed that WG elections for chairmen will be postponed after March TSGs, where TSG RAN elections will take place.

TSG RAN Long Term Evolution

The results of the Long Term Evolution Work Shop (2 – 3 November, Toronto) were presented. Operators and manufacturers had debated the requirements and technical proposals for the Future RAN, and a set of requirements were compiled as a conclusion.

The work on Evolution will start as a Study Item, where proposals for a new radio interface and network architecture will be presented and compared. As a conclusion of this Study, a number of Work Items will be created. The Study will be jointly led by all WGs and the completion is expected for June 2006.

The organizative frame of work was extensively discussed. Some companies believed that it was preferable to have a separate Ad Hoc group to deal with evolution. A large group of companies presented a proposal where no new structures are created, the Study phase will be carried out in joint meetings with participants from all the WGs. These joint meetings will ensure coordination and allocate tasks to the WGs. Once the Study phase is achieved, work will continue as usual with Work Items in the WGs. This was the way forward finally agreed

Liaison with other groups

A Liaison Statement was received from ETSI MSG on the issue of GSM service being operated onboard commercial aircrafts. Such systems may interfere terrestrial UMTS networks, WG4 is tasked to study the impacts. TSG GERAN had also reviewed the issue and had already produced a LS with some observations.

SA WG4 has asked for guidance on the error patterns to be expected in the MBMS streaming. It is a difficult issue, involving various RAN WGs, so SA WG4 experts are invited to joint the collocated meetings in February to jointly discuss the issue.

ITU-R matters

The schedule for the Update 6 of ITU-R Recommendation M.1457, as approved in ITU-R WP8F, was presented. Technical inputs are to be submitted by October 2005. It is difficult for TSG RAN to estimate now what items will be finished by that date, but it is agreed to go for a "complete" submission, including a revision of the prose descriptions in the Recommendation and a revised list of references.

Release 99, Release-4 & Release-5

A LS from RAN WG4 was received proposing the removal of TGPL2 (Transmission Gap Length 2) for compress mode from all RAN specifications The arguments are that performance requirements, that networks could rely upon, have not been specified; and that studies in WG4 show that it doesn't bring benefits although it is mandatory in the UE. WG4 proposes to delete from Rel99 onwards. There was some debate on the Release of application of the deletion, and since some of the CRs presented have technical aspects unclear, it was agreed to postpone the approval and to task the WGs to review the CRs.

Release 6 and beyond

TSG RAN examined the active Work Items under its responsibility with the consideration that Release-6 was to be frozen by TSG SA in December 2004, as it was the case. It was however decided that some of the active Work Items, not finished by December, were to be kept inside Rel-6.

The work on HSDPA UE receiver performance requirements is progressing normally; completion is expected by June 2005, the group agreed to keep the WI in Rel-6.

The WI Description Sheet of UMTS 2.6 GHz was revised to cover co-existence with other IMT2000 technologies.

ROHC for IMS is mandatory for Rel-6 IMS, under the RAB enhancements WI. It was discussed if a particular ROHC implementation/parameters should be mandated in 3GPP, and how to ensure a given performance of the compressor. WG2 is asked to continue to look at this, with an expected completion in March 2005. The feature is to be kept in Rel-6.

The WI Optimization of downlink channelization code utilization for FDD is to be completed in March 2005 but proposed to be kept in Rel-6.

Optimization of downlink channelization code utilization for TDD is splitted in two WIs, 3.84 Mcps and 1.28 Mcps. The first is to be completed by June and proposed to be kept in Rel-6, the second by September.

The HS-DPCCH ACK/NACK enhancement feature is completed, the CRs are presented and approved

The parts in WG1, WG2 & WG3 of MBMS are completed and the CRs approved. WG4 WI on MBMS UE performance is to be completed by September, but the requirements arising will be kept in Rel-6 (sec. 8.4)

The way forward in the MIMO Work Item was discussed. MIMO is clearly going to be part of the Long Term Evolution, but it is also an active Work Item. Alternatives are to continue with MIMO apart of the LTE, or to close the WI and move the work to LTE. For the time being, it is agreed to stop MIMO work in WG1 for 6 months, and to revise the situation in June 2005.

FDD Enhanced Uplink Stage 2 is concluded and the work in WG1 is almost finished. WG2 and WG3 will need 3 additional months. WG4 is progressing fast on the performance requirements, expected for June 2005. The feature is to be kept in Rel-6.

The Study on Evolution of UTRAN Architecture, which was kept on hold for the last 9 months, is closed and the activity is moved under the Long Term Evolution frame.

The completion date of the Study on Uplink enhancements for UTRA TDD is delayed to March 2005.

Under the TEI6 (small Technical Enhancements and Improvements Rel-6) basket, two alternatives were presented for the introduction of Network-initiated Scudif (sec. 8.9). Since CN still has to conclude on the issue, it was preferred to delay the decision in RAN also.

A proposal for a new network measurement 'DL Transmission Branch Load' was presented, also under TEI6. Although some companies raised concerns about its usefulness, the principle was agreed. WG3 CRs need to be revised, and the full set will be presented in March 2005.

The following new Work Items were approved:

• Study Item on Evolved UTRA and UTRAN

• UE Antenna Performance Evaluation Method and Requirements

• UMTS 2600 MHz TDD

• UMTS 900 MHz

• Optimization of Channelisation Code Utilisation for 3.84 Mcps TDD

• Optimization of Channelisation Code Utilisation for 1.28 Mcps TDD

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TSG-CN (Core Network)

Release 6 content and timing

Several CN Rel 6 items were granted extensions until TSG#27 (March. 2005).  All remaining CN Rel 6 work items are currently scheduled for completion in March.  The following items were granted extensions until March.

• Flow Based Charging (Rx interface not complete)

• IMS Phase 2 (Conferencing, Messaging, IMS MO not complete)

• OSA 3 (Completion of stage 2)

• Presence (IETF Dependencies, Pk interface)

• TEI (Domain Specific Access Class Barring not complete)

• Subscriber & Equipment Trace (SA5 discussions ongoing)

• WLAN Interworking (Mechanism for manual PLMN selection)

Work Progress

There was considerable progress at this plenary with:

• 5 specifications put under change control

• 4 specifications were presented for information

• 6 WIDs were updated

• 5 New WIDs were approved

Cooperation with external fora

GSMA IREG

Manual PLMS Selection solution needs more work.
GSMA IREG has indicated that the CN4 proposed solution for manual PLMN selection (Alternative NAI) is unacceptable.  Peter Schmidt will coordinate discussions with CN1, CN4, GSMA IREG, and SA1 to find a way around this problem.  The CN4 mailing list should be used for these discussions.

ETSI TISPAN

Continued cooperation between 3GPP and TISPAN on harmonized IMS.
A second workshop with TISPAN on IMS for fixed broadband was agreed.  CN & SA supported the dates of March 30-31, 2005.  The response to TISPAN may be found in the LS SP-040929.

ITU-T

A LS was generated to the 3GPP OPs to start the Rel 6 transposition process towards ITU-T SG-19 (NP-040602).  This LS will be populated based upon the list of specs from TSG#26.

Organization issues

Creation of the new TSG CT
A joint meeting of CN and T was held to discuss the PCG approved transition to CT.  CT will consist of all the CN WGs + T2 and T3.  The following was agreed:

• The CT ToR (NP-040626) was agreed.  This must be approved by the PCG.

• WG renaming defaults, meeting numbering, file naming, and file storage conventions were agreed (NP-040627)

• WG elections (for groups that will be in CT) will be delayed until after the March TSG elections (NP-040627)

• WGs are by default considered "old" after the transition unless CT decides differently (NP-040627)

• There will be 3 TSG vice chair positions in CT at the March TSG elections. (NP-040627)

• An initial meeting of CT (CT#27) will be held on Friday afternoon (March 11, 2005).  The scope of the meeting will be to discuss possible WG reorganization.

Activities by WG:

The following are the actions requested by the CN and SA plenaries for the CN WGs.  Note that the supporting companies are still required to introduce the appropriate contributions into the WGs to ensure that the actions occur.

CN1:

If the IETF drafts on conference-package, cpcp, and bfcp have not completed WGLC by the start of the February CN1 meeting, then the corresponding functionality should be removed from Rel 6 conferencing contents.  Companies are urged to provide input on prioritization of cpcp functionality to the CN chair.

SA1 has been requested to review the documentation structure and requirements for group management.  CN1 is requested to align their specs to reflect any updates.

The SA1 CR updating the definition of radio access technology and adding additional definitions was rejected.  SA1 has decided to not pursue modifying the definitions.

Several critical drafts on presence in IETF need to progress in order to satisfy the outstanding 3GPP dependencies.  Companies are urged to become active in the IETF to progress this work with special focus on the presence data model and the partial publication/notification drafts.

CN1 is requested to review the latest version of 33.878 (early IMS security) for consistency.  Note that this TR will be renumber to a 900 series TR.

A proposed WID on Combinational Services could not be approved by CN because CN1 first needs to review it.  Since there was general support for this work in CN, work can proceed on this topic with the expectation that a CN1 agreed WID will be presented at CN#27.  The corresponding SA1 WID (SP-040926) which also includes stage 2 aspects was approved in SA.

All outstanding Rel 6 items should be completed by March.  For any work not completed, form SP-040932 must be filled in to justify continued inclusion in Rel 6.

CN3:

CN3 must complete the work on Pk or it will likely be dropped from Rel 6.

CN3 is requested to review the latest version of 33.878 (early IMS security) for consistency.  Note that this TR will be renumber to a 900 series TR.

CN3 should conclude the discussions on network initiated SCUDIF as RAN is waiting to approve CRs.

All outstanding Rel 6 items should be completed by March.  For any not completed, form SP-040932 must be filled in to justify continued inclusion in Rel 6.

CN4:

It was noted that the Pr (to AAA server) and Pp (to PDG) presence interfaces (and possibly other interfaces) are not currently being addressed in CN.  CN4 should include or exclude this work in Rel 6 and inform SA2 so they can align the architecture accordingly.

All outstanding Rel 6 items should be completed by March.  For any not completed, form SP-040932 must be filled in to justify continued inclusion in Rel 6.

CN5:

All outstanding Rel 6 items should be completed by March.  For any not completed, form SP-040932 must be filled in to justify continued inclusion in Rel 6.

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