1. September 22, 2005David Hunter Panasonic IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-05-0381-00-0000 Title: Liaison Report – 802.11 Work Related to 802.21 Date Submitted: September 22, 2005 Presented at IEEE 802.21 session in Garden Grove Authors or Source(s): David Hunter Abstract: 802.11r is developing the 802.11 amendment for Fast BSS Transitions. This amendment will become a requirement for 802.21 operations with 802.11.

2. September 22, 2005David Hunter Panasonic –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 IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs 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. September 22, 2005David Hunter Panasonic Liaison Report IEEE 802.11 work related to 802.21 David Hunter Panasonic hunter@timefactor.com

4. September 22, 2005David Hunter Panasonic 802.11r – Fast BSS Transition –Between BSSes within the same ESS –Interacts with both 802.11k (esp. neighbor report) and 801.11w 802.11u – Interworking with External Networks –MAC changes to accommodate, among others, 802.21 –Interacts with both 802.11k and 802.11r 802.11v – Wireless Network Management –Management protocol additions –AP-AP negotiations; load balancing; additional access controls 802.11w – Protecting Management Frames –Security for management frames, including broadcast frames –Interacts with both 802.11r and 802.11u 802.11 Groups Related to 802.21 (the usual suspects)

5. September 22, 2005David Hunter Panasonic 802.11r – Fast BSS Transition –I'll cover some points in the following slides 802.11u – Interworking with External Networks –We had one joint session this meeting –Ill only add one note at the end of this presentation 802.11v – Wireless Network Management –Completing objectives list this week: 11-05-0827-03 Including location support, reports for degradation due to multi-radios, multi-antenna management –Issuing initial call for proposals 802.11w – Protecting Management Frames –Reviewing initial proposals 802.11 Group Status

6. September 22, 2005David Hunter Panasonic 802.11r Background Fast Transition is an optional capability that APs and STAs may have –TAP= Fast Transition Enabled AP –TSTA= Fast Transition Enabled STA Five stages of BSS – BSS transition: –Scanning – active or passive for other APs in the area –Authentication with a (one or more) target AP –Re-association to establish connection at target AP Have a connection, but still can't *DO* anything… –PTK derivation – 4-way handshake of session keys Based on 802.1x authentication –QoS admission control to re-establish QoS streams

7. September 22, 2005David Hunter Panasonic 802.11r Current Work No longer looking for proposals Debate settled this week: OTA pre-reservations –DS is planned to be the major resource negotiation path –So OTA seems to be an additional nicety –Vote was unanimous to keep OTA pre-reservations Key point to 802.21: TGr is completing its detail phase –Except for minor changes, things are basically set in stone now Current draft –P802.11r-D0.08.pdf – but D0.09 will be out in a few days –Not in 802wirelessworld.com, but in www.ieee802.org Members Area –There will be a 15-day internal call for comments and using the bi-weekly Wednesday teleconferences (Oct 12 th +) to work out changes –Then in November will go to full WG Letter Ballot

8. September 22, 2005David Hunter Panasonic 802.11r Current Status Mobility Domain –Mobility Domain is the set of all other 802.11 APs to which a STA can roam right now –Last week there were Resource Mobility Domains and Security Mobility Domains –These are now combined into a single Mobility Domain concept –With a single MDIE (8 octets = Element ID + Len + 6 octet MD identifier number) Fast Transition IE –The TRIE and TSIE are now just FTIE (Fast Transition IE) FTIE is 35 octets long – including the R0 KeyHolder and R1 KeyHolder IDs (16 octets each) –FTIE is advertised in beacons and probe responses Association requests and responses –If Fast Transition is supported, then the MDIE and FTIE are in all association reqs/resps Pre-allocation of reservations –Both direct to the next AP (OTA, over-the-air) and through a proxy/broker (OTD, over the DS) –The AP advertises in its beacons and probe responses whether it supports OTD –Note: OTA is important for supporting APs that either have very complicated or slow DSes behind them, or no DS at all

9. September 22, 2005David Hunter Panasonic Background Issues Beware of 802.11 dependence on EtherTypes –It was pointed out Tuesday that some of the groups propose specific EtherTypes to transport information over the DS –Problem: DS is not required to be Ethernet, nor even Ethernet compatible –Consequently: the information that these groups are defining in terms of EtherTypes needs to be more generically defined –In the meantime, 802.21 needs to make sure that all of these new information definitions are generic enough to be usable over other DS protocols

10. September 22, 2005David Hunter Panasonic 802.11r Timeline Draft D0.09 available early next week Issue internal-to-TGr 15-day request for comments Then bi-weekly teleconferences through November 30 –Emphasis on comment resolution from the 15-day request Progress is much faster toward Letter Ballot than expected last July –Likely November 2005 Very likely to go to sponsor ballot long before the 802.21 Draft goes to sponsor ballot

11. September 22, 2005David Hunter Panasonic 802.11u Note 802.11u Liaison Letter being Issued –The 802.11 WG is sending liaison letters, explaining 802.11us work, to a wide assortment of standards and industry groups –Recipients include: 802.21, 802.1, 802.16, 3GPP, 3GPP2, GSMA, IETF, IRAP, WiFi Alliance, WiMAX, etc. –Letter enclosures are: 11-05-0960-00, Generic Requirements Liaison (letter) 11-05-0822-03, Requirements for TGu 11-05-0333-10, Terms and Definitions Calls for a formal response from 802.21