1. 21-07-0126-00-0000 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-07-0126-00-0000 Title: Liaison Report – 802.11 Work Related to 802.21 Date Submitted: March 15, 2007 Presented at IEEE 802.21 session 19 in Orlando, FL, U.S. Authors or Source(s): David Hunter Abstract: 802.11 is one of the technologies that 802.21 MIH is required to support.

2. 21-07-0126-00-0000 IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. 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. 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 802.21. The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html

3. 21-07-0126-00-0000 Liaison Report IEEE 802.11 work most related to 802.21 David Hunter Panasonic hunter@timefactor.com

4. 21-07-0126-00-0000 802.11k – Radio Resource Measurement Measurements provided for runtime adjustment of radios Available to internal STA components, higher layers, and external devices 802.11m – Maintenance (compilation of all approved amendments) IEEE Std. 802.11-2007 approved by SASB March 8, 2007 New 802.11mb Maintenance Task Group was started in this (March 2007) meeting 802.11r – Fast BSS Transition Between BSSes within the same ESS Relies on 802.11k (especially neighbor reports) 802.11u – Interworking with External Networks MAC changes to accommodate, among others, 802.21 Relies on 802.11k and 802.11r; has scope agreement with 802.11v 802.11v – Wireless Network Management Management protocol additions; AP-AP negotiations; load balancing; access controls New Chair of the group TG is recommending Dorothy Stanley to the WG; WG will decide tomorrow 802.11w – Protecting Management Frames Security for management frames, including broadcast frames Relies on 802.11k, 802.11r and perhaps 802.11u 802.11aa (??) – New DLS May be approved by IEEE 802 EC tomorrow 802.11 Groups Related to 802.21 (more than the usual suspects)

5. 21-07-0126-00-0000 802.11aa(??) New DLS New Proposed Task Group DLS: Direct Link Setup Direct communications between two non-AP STAs Problem with Current DLS Definition Must be set up by communications with the AP Requires AP specifically to be capable of supporting this Not many APs today have this capability Want a DLS that can be set up between STAs without a special AP In addition, current DLS definition does not support Power Save Proposed TG A couple of groups have clear ideas (and trials) of how to accomplish this –11-07-0478-00-0000-ndls.ppt –11-06-1566-01-0wng-flexwifi-distributed-dls.ppt Proposed PAR and 5C 11-07-0225-02-0000-draft-par-and-5-criteria-dls-sg.doc Likely approval by 802.11 WG Tomorrow Morning May be approved by 802 WG EC Tomorrow Afternoon

6. 21-07-0126-00-0000 802.11u Highlights (Quick Summary, since 802.21 has great interaction with 11u) Summary of February Ad-Hoc with 802.21: 11-07-0270-02 Motions summary; Motions for new text passed 11-07-0445-02 (available after this meeting) 11-07-0257-00 – MIME Corrections: 8:0:2 11-07-0273-01 – GAS Comment Resolutions: 9:0:2 11-07-0274-01 – SSPN Interface: 10:0:1 11-07-0275-01 – QoS Map Interworking: 10:0:1 11-07-0323-02 – GAS MIB: 12:0:0 11-07-0276-01 – ES Capability IE: 12:0:3 11-07-0311-00 – ES Alert Notification: 12:0:3 11-07-0443-00 – Intro Text for Clause 5: 13:0:2 11-06-1935-01 (see also 11-06-1473-03) – Multi-SSID (mSSID): 24:0:9 11-07-0461-00 – Rewrite of QoS Mapping Sections: 15:0:15 11-07-0407/0408-00 – ES Public Credentials / Usage: 17:0:12 11-07-0411-00 – SSPN Admission Control: 14:0:9 New development material – looking for additional inputs 11-07-0448-00 – Using 802.21 for Emergency Services 11-07-0446-00 – HotSpot Identification (search, sort, categories) One presentation remaining this afternoon Timeline: 11-06-0701-04  will become an 11-07 document Current Draft: D0.04 275 comments from Draft 0.02; still filling in blank spots in text But a LOT of changes in this session *Might* go to Letter Ballot in May 2007

7. 21-07-0126-00-0000 802.11r Letter Ballot Status Latest re-circulation ballot comments completed Current Draft 4.3 was available this morning Authorized re-circulation ballot on Draft 5.0 (same as 4.3) Finished all comments this week Complete comment resolutions: 11-06-1895-18-000r-d4-comments.xls Deciding on another recirculation ballot late today 15-day, so will be complete in early April Ad-hoc April 24-26, Arlington, VA for comment resolution Scheduled also a backup ad-hoc June 19-21 in Toronto

8. 21-07-0126-00-0000 802.11r This Session, 1 Controversy #1 Ruling by the TGr Chair In November a motion to make a group of key distribution changes was first defeated, then, with a text change, successful For the ruling controversy, compare 11-06-1765-00 and 11-06- 1765-01, then see documents: –11-06-1906-00-000r-response-to-ieee-802-11-appeal-december-5 th - 2006.doc –11-07-0181-00-000r-chair-ruling-2007-01-18.doc March session: –Special board appointed by 802.11 Chair upheld the ruling of the TGr Chair –Judgment: 11-07-0228-00-0000-appeal-panel-decision.pdf So the “Push Model” is now in place Reference: 11-06-1613-02-000r-key-distribution-push- capability.doc – but see final version in Draft 4.3

9. 21-07-0126-00-0000 802.11r This Session, 2 Controversy #2 Architecture of non-AP STA Does it need to have the same logical security blocks as the AP? Some argue that symmetry between AP and non-AP is required for security. Still an issue So far symmetry has been retained Symmetry likely to be retained as long as gain from asymmetry is minor

10. 21-07-0126-00-0000 802.11r This Session, 3 Controversy #3 Abandonment of non-CCMP security Early this week the TG voted not to support TKIP in Fast Transitions –TKIP is still allowed in 802.11 –The decision was just not to support it in 802.11r –A vendor may still extend 802.11r to cover TKIP But wording of the text now says: must support CCMP Proposal to allow old wording Supporting TKIP, but also other security systems Debate over whether this proposal was complete Vote: 9:7:7 (failed) Issue will definitely come back next meeting Proposers need to create motion with text changes throughout the Draft that say “CCMP or better security”

11. 21-07-0126-00-0000 802.11r Timeline PAR was approved over 2 years ago Note: External Security Review is starting now Over 20 experts involved Circulations Still possible to go to Sponsor Ballot after July, 2007 Plenary Limitations IETF support : Key Management 11r is putting very specific requirements on key management Correction: IETF is not working on this; decision is to be vendor-specific 802.11k dependencies If 802.11k doesn’t finish first, arrangement is to copy the portions of 802.11k that 802.11r needs Key point: So 802.11r sponsor ballot still before 802.21 sponsor ballot