Notes on 802.11-TGu liaison November 2005 Date: 2005-11-14 Authors: Notice: This document has been prepared to assist IEEE 802.11. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <stuart.kerry@philips.com> as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Stefano M. Faccin, Nokia

November 2005 Abstract This document contains the IEEE 802.11 – 3GPP2 liaison report for November 2005. Stefano M. Faccin, Nokia

November 2005 Status of Liaison Liaison letter sent from 802.11 to 3GPP2 after September meeting Liaison presented and discussed at 3GPP2 October meeting Presentation of 11-05-0822-03-000u-tgu-requirements, in TSG-X “Core Networks” 3GPP2 TSG-X ERA (Evolution, Requirements and Architecture), jointly with TSG-S “Services and Systems Aspects” Stefano M. Faccin, Nokia

3GPP2 Activities related to IEEE 802.11: TSG-S November 2005 3GPP2 Activities related to IEEE 802.11: TSG-S Stage-1 Requirements (S.R0087-0) published August 04 Four main scenarios supported: Scenario 1: Common billing & Customer Care Scenario 2: Common authentication & WLAN Direct IP Access Focus on 802.1X authentication with EAP-TLS; EAP-AKA Access to IP connectivity, not 3GPP2 services Scenario 3: WLAN 3GPP2 IP Access Authentication/authorization/accounting based on 3GPP2 Home System Access to the 3GPP2 Home System packet data services Scenario 4: Session Continuity continuity of a packet data session while switching of network connection takes places between the available access systems (e.g. WLAN-3GPP2) Stefano M. Faccin, Nokia

3GPP2 Activities related to IEEE 802.11: TSG-X November 2005 3GPP2 Activities related to IEEE 802.11: TSG-X Stage-2/3 Specification Phase I (X.P0028-0) completed (3Q04). Not published yet. Supports scenarios 1 and 2 Stage-2/3 Specification Phase II (X.P0028-A) Planned to support scenarios 3 and 4 Stefano M. Faccin, Nokia

TSG-S/TSG-X Main Feedback November 2005 TSG-S/TSG-X Main Feedback Main comment is that 3GPP2 has been developing the 3GPP2-WLAN interworking assuming that 802.11 is a black box and no enhancements/changes are possible 3GPP2 indicated that further study of the requirements will take place, and comments will be provided to 802.11 3GPP2 also indicated that for scenarios currently developed for the IW the work in 802.11 TGu is most probably not relevant due to the timelines for TGu However, for longer term aspects of the IW, TGu work can provide valid tools to 3GPP2 3GPP2 suggested 802.11 to look at current 3GPP2-WLAN IW documents, even if it was reminded them that the documents had been studied to create TGu requirements Stefano M. Faccin, Nokia

TSG-C SWG1.4 MMSS Ad-Hoc Group focus is on system selection aspects November 2005 TSG-C SWG1.4 MMSS Ad-Hoc Group focus is on system selection aspects Currently discussing network selection proposals Presentation on 802.21 created some stir since current proposals are either based on: Draft-adrangi, being however deprecated, or cdma-specific L2 solutions 802.21 is now offering an open-standard solution, several parties interested to discuss further Both 802.21 @ L2 and @ L3 raised the group interest “interesting” questions: see appendix Stefano M. Faccin, Nokia

Discussion Items Network selection Authentication Comment: November 2005 Discussion Items Network selection Need to understand more about solution space  we should keep them posted on proposals and ideas Questions: do we want to post them the proposals as soon as they come up and get feedback? Authentication Not clear on authentication to multiple SSPNs through a single AP Not sure of relevance for 3GPP2 Comment: There seem to be some difficulty in gauging the type, extent, and impact of the 802.11 MAC enhancements corresponding to the TGu requirements Stefano M. Faccin, Nokia

Way Forward (A Suggestion to TGu) November 2005 Way Forward (A Suggestion to TGu) We need to keep “educating” 3GPP2 on the type of enhancements being defined E.g. describing types of proposals being submitted in order to create awareness of type, extent, and impact of the 802.11 MAC enhancements corresponding to the TGu requirements Final goal is to generate “practical” feedback from 3GPP2 that can be used by TGu to ensure TGu solutions are relevant for and welcome by 3GPP2 Stefano M. Faccin, Nokia

November 2005 Appendix Stefano M. Faccin, Nokia

Interesting Questions November 2005 Interesting Questions In order of “interest” “Why don’t you just use AAA … ? Just extend EAP!” I had been expecting this … “No need for a new solution, STUN solves the problems.” Almost fell off the chair! But the award goes to … Stefano M. Faccin, Nokia

Interesting Questions November 2005 Interesting Questions “Why does IEEE want to mingle with 3GPP2 where you don’t belong?” No respectable answer could be found. Stefano M. Faccin, Nokia