1. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 1 TGn Sync March 5min Summary 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: 2005-03-16 Author NameCompanyAddressPhoneEmail Syed Aon Mujtaba Agere Systems 555 Union Blvd., Allentown, PA 18109, USA +1 610 712 6616mujtaba@agere.com

2. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 2

3. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 3

4. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 4

5. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 5 Abstract  TGn Sync 5 minute summary

6. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 6 TGn Sync Represents Broad Industry Consensus  OEM / System Vendors ■ Cisco ■ C-Cation (New) ■ Interdigital (New) ■ Mitsubishi Electric ■ Nortel ■ Panasonic ■ Samsung ■ Sanyo ■ Sharp ■ Sony ■ Toshiba ■ Wavebreaker/ATcrc ■ Wavion  Semi-Conductor Vendors ■ Agere ■ Atheros ■ Infineon (New) ■ Intel ■ Marvell ■ Metalink (New) ■ Philips ■ Qualcomm  Academia ■ Infocomm ■ Tohoku University ■ Univ of Victoria ■ Polytech Inst. of NY (New)

7. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 7 TGn Sync is Fastest Path to a Final Standard  Well defined & well documented proposal  Developed using the IEEE consensus process  TGn Sync is the solution that best represents broad TGn interests  Limited or incomplete solutions delay the ballot process ■ Delaying answers to questions will delay the standard process

8. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 8 WWiSE Proposal has Many Outstanding Issues after Q&A  Tim Wakeley’s question, re RTS/CTS + greenfield mode - answer deferred  Preamble auto-detection techniques undefined ■ Detection of new second SIG-N undefined  Rate feedback still incomplete  Legacy compatibility with 3 and 4 spatial streams – answer deferred  Legacy compatibility with greater then 50nsec – answer deferred  …

9. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 9 WWiSE Proposal has Many Outstanding Issues after Q&A  3x1, 4x1 performance claimed, but no supporting data  Channel estimation issue not answered since Jan 2005  Performance with only mandatory features unknown  2-pilot tone robustness concerns not addressed  Extended spoofing - one sentence is insufficient  …

10. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 10 WWiSE Proposal has Many Outstanding Issues after Q&A  N-beacon– not defined in specification ■ Raises significant new co-existence issues  Embraced TxBF; but said not interested in completing the specification  …  Lots of key information is just not available

11. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 11 The Real Concern  The open issues with WWiSE proposal will create significant problems for TGn ■ Huge letter ballot implications.  That is EXACTLY the problem TGe had  TGn cannot afford to make the same mistake

12. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 12 TGn Needs The Best Technical Proposal  TGn Sync offers the Best Performance ■ Best rate at range capability ■ Most Effective MAC  The Most Extensibility ■ Advanced Beamforming ■ 20/40 MHz channel Interoperability  Is Thoroughly Defined & Well Documented ■ Developed & Proven on strong technical merit ■ Solution evolved from over 20 months of consensus TGn Sync offers the best 802.11n proposal

13. doc.: IEEE 802.11-05/266r0 Submission March 2005 Syed Aon Mujtaba, Agere Systems, et. al.Slide 13 Conclusion  TGn Sync is the fastest path to an 802.11n standard  Offers the most Effective MAC  Offers the most Extensible PHY  TGn Sync offers the Best 802.11n Technical Proposal