1. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 1 IEEE802.11 for high speed mobility 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, 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 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.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfstuart.kerry@philips.compatcom@ieee.org Date: 2009-9-22 Authors:

2. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 2 Abstract We talk about IEEE802.11 enhancement for high speed mobility support. –Mobile vs. Nomadic –Limitation of Market –Connectivity Lost –How to solve the issue –2 Straw Polls

3. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 3 Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 3 Mobile vs. Nomadic Let’s quote definitions from RECOMMENDATION ITU-R F.1399-1 “Vocabulary of terms for wireless access” Mobile wireless access (MWA) –Wireless access application in which the location of the end-user termination is mobile. Nomadic wireless access (NWA) –Wireless access application in which the location of the end-user termination may be in different places but it must be stationary while in use.

4. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 4 Limit of market growth in the existing 802.11 Bandwidth? –No! We are getting wide bandwidth day by day 11b, g, a, n, ac, ad Securities? –No! 802.11 incorporates new security system too. WEP, 802.11i… Propagation range? –No! it is true, but it is not limit of technologies. –It’s depends on regulatory. –And it’s good for avoiding congestion. Service model? –Yes! we are still in nomadic services.

5. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 5 Beyond “Nomadic” If we got actual mobility on Wi-Fi We will get Wi-Fi IP mobile phone (not only in-house phone) Wi-Fi on a car (high context navigation) Wi-Fi on a train (passenger services) Wi-Fi real-time audio (anywhere anytime) Wi-Fi real-time video (anywhere anytime) skype, etc.,

6. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 6 Existing Wi-Fi Service Area Huge number of APs were deployed by different owners. –APs owned by one owner can be operated by 802.11r technology to provide fast roaming inside one ESS. An STA is always receiving at least one or more signals from someone's APs continuously. However, we have to spend a couple of seconds to connect to another ESS every time. –In other words, we lost connectivity at every border of ESS. This is not suitable for mobile communication.

7. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 7 Reasons of Connectivity Loss Waste much time to … 1.Discover a new AP. Latency can be reduced by 11k or background scan. 2.Make association with a new AP. (includes authentication/key exchange…) 11i authentication is NOT fast. –It needs many packet exchanges. 3.Upper layer setup. (Out of Scope) 4.Upper layer handover. (Out of Scope) Fast authentication and key management (AKM) can reduce connectivity loss.

8. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 8 Protocol Sequence of IEEE802.11i (EAP-TLS) STA AP RADIUS Server Beacon Probe Request Probe Response Authentication Request Authentication Reply Association Request Association Accept EAPOL-Start EAP-Request/Identity EAP-Response/Identity EAP-Request/TLS-Start RADIUS-Access-Request/Identity RADIUS-Access-Challenge/TLS-Start EAP-Response/TLS-client Hello EAP-Success RADIUS-Access-Request/Pass Through RADIUS-Access-Challenge/ Server Certificate EAP-Key EAP-Request/Pass Through EAP-Response/Client Certificate RADIUS-Access-Request/Pass Through RADIUS-Access-Challenge/Encryption Type EAP-Request/Pass Through EAP-Response RADIUS-Access-Request RADIUS-Access-Accept

9. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 9 Authentication and PTK exchange Utilize Pre-RSNA Security Framework –Authentication and PTK exchange can be done in pre-RSNA security framework. –After PTK setup, GTK can be securely delivered. STA AP Authentication Server Beacon (Probe Request) (Probe Response) Authentication Request Authentication Reply Access Request Access Response (Association Request) (Association Accept)

10. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 10 Benefits Reduce AKM time Reduce air time occupied by management frames Prevent association ID from depletion by DoS attack Support high speed mobile communication.

11. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 11 Conclusion Limitation of IEEE802.11 is “NOMADIC” use only. Mobile communication will expand IEEE802.11 market. Long AKM time is not suitable for mobile use. We have to reduce AKM time toward mobile. So fast AKM is required for mobile use.

12. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 12 Questions & Comments

13. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 13 Straw Poll 1 “IEEE802.11 should proceed to mobile communication.” Yes: No: Need More Discussion: Don’t Care:

14. doc.: IEEE 802.11-09/1000r0 Submission Sep 2009 Hitoshi MORIOKA, ROOT Inc.Slide 14 Straw Poll 2 “A Study Group to develop a PAR and 5C for Fast Authentication and Key Exchange Method should be created” Yes: No: Need More Discussion: Don’t Care: