1. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 1 TGn Sync Complete Proposal Overview Aon Mujtaba, Agere Systems Inc., (mujtaba@agere.com)mujtaba@agere.com Adrian P Stephens, Intel Corporation, (adrian.p.stephens@intel.com)adrian.p.stephens@intel.com Alek Purkovic, Nortel Networks (apurkovi@nortelnetworks.com)apurkovi@nortelnetworks.com Andrew Myles, Cisco Systems (amyles@cisco.com)amyles@cisco.com Brian Johnson, Nortel Networks Corporation, (brjohnso@nortelnetworks.com)brjohnso@nortelnetworks.com Chiu Ngo, Samsung Electronics Co. Ltd., (chiu.ngo@samsung.com)chiu.ngo@samsung.com Daisuke Takeda, Toshiba Corporation, (daisuke.takeda@toshiba.co.jp)(daisuke.takeda@toshiba.co.jp Darren McNamara, Toshiba Corporation, (Darren.McNamara@toshiba-trel.com)Darren.McNamara@toshiba-trel.com Dongjun (DJ) Lee, Samsung Electronics Co. Ltd., (djthekid.lee@samsung.com)djthekid.lee@samsung.com David Bagby, Calypso Consulting, (david.bagby@ieee.org)david.bagby@ieee.org Eldad Perahia, Cisco Systems, (eperahia@cisco.com)eperahia@cisco.com Hiroshi Oguma, Tohoku University, (oguma@wit.riec.tohoku.ac.jp)oguma@wit.riec.tohoku.ac.jp Hiroyuki Nakase, Tohoku University, (nakase@riec.tohoku.ac.jp)nakase@riec.tohoku.ac.jp Huanchun Ye, Atheros Communications Inc., (hcye@atheros.com)hcye@atheros.com Hui-Ling Lou, Marvell Semiconductor Inc., (hlou@marvell.com)hlou@marvell.com Isaac Lim Wei Lih, Panasonic (wllim@psl.com.sg)wllim@psl.com.sg James Chen, Marvell Semiconductor Inc., (jamesc@marvell.com)jamesc@marvell.com

2. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 2 Authors (continued) James Mike Wilson, Intel Corporation, (james.mike.wilson@intel.com)james.mike.wilson@intel.com Jan Boer, Agere Systems Inc., (janboer@agere.com)janboer@agere.com Jari Jokela, Nokia, (jari.jokela@nokia.com)jari.jokela@nokia.com Jeff Gilbert, Atheros Communications Inc., (gilbertj@atheros.com)gilbertj@atheros.com Job Oostveen, Royal Philips Electronics, (job.oostveen@philips.com)job.oostveen@philips.com Joe Pitarresi, Intel Corporation, (joe.pitarresi@intel.com)joe.pitarresi@intel.com Jörg Habetha, Royal Philips Electronics, (joerg.habetha@philips.com)joerg.habetha@philips.com John Sadowsky, Intel Corporation, (john.sadowsky@intel.com)john.sadowsky@intel.com Jon Rosdahl, Samsung Electronics Co. Ltd., (jon.rosdahl@partner.samsung.com)jon.rosdahl@partner.samsung.com Kiyotaka Kobayashi, Panasonic (kobayashi.kiyotaka@jp.panasonic.com)kobayashi.kiyotaka@jp.panasonic.com Li Yuan, Institute for Infocomm Research, (liyuan@i2r.a-star.edu.sg)liyuan@i2r.a-star.edu.sg Luke Qian, Cisco Systems, (lchia@cisco.com)lchia@cisco.com Mary Cramer, Agere Systems (mecramer@agere.com)mecramer@agere.com Masahiro Takagi, Toshiba Corporation, (masahiro3.takagi@toshiba.co.jp)masahiro3.takagi@toshiba.co.jp Monisha Ghosh, Royal Philips Electronics, (monisha.ghosh@philips.com)monisha.ghosh@philips.com Nico van Waes, Nokia, (nico.vanwaes@nokia.com)nico.vanwaes@nokia.com Osama Aboul-Magd, Nortel Networks Corporation, (osama@nortelnetworks.com)osama@nortelnetworks.com Paul Feinberg, Sony Electronics Inc., (paul.feinberg@am.sony.com)paul.feinberg@am.sony.com Pen Li, Royal Philips Electronics (pen.li@philips.com)pen.li@philips.com

3. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 3 Authors (continued) Peter Loc, Marvell Semiconductor Inc., (ploc@marvell.com)ploc@marvell.com Pieter-Paul Giesberts, Agere Systems Inc., (pgiesberts@agere.com)pgiesberts@agere.com Richard van Leeuwen, Agere Systems Inc., (rleeuwen@agere.com)rleeuwen@agere.com Ronald Rietman, Royal Philips Electronics, (ronald.rietman@philips.com)ronald.rietman@philips.com Seigo Nakao, SANYO Electric Co. Ltd., (snakao@gf.hm.rd.sanyo.co.jp)snakao@gf.hm.rd.sanyo.co.jp Sheung Li, Atheros Communications Inc., (sheung@atheros.com)sheung@atheros.com Stephen Shellhammer, Intel, (stephen.j.shellhammer@intel.com)stephen.j.shellhammer@intel.com Sumei Sun, Institute for Infocomm Research, (sunsm@i2r.a-star.edu.sg)sunsm@i2r.a-star.edu.sg Taekon Kim, Samsung Electronics Co. Ltd., (taekon.kim@samsung.com)taekon.kim@samsung.com Takashi Fukagawa, Panasonic, (fukagawa.takashi@jp.panasonic.com)fukagawa.takashi@jp.panasonic.com Takushi Kunihiro, Sony Corporation, (kuni@wcs.sony.co.jp)kuni@wcs.sony.co.jp Teik-Kheong (TK) Tan, Royal Philips Electronics, (tktan@philips.com)tktan@philips.com Tomoko Adachi, Toshiba Corporation, (tomo.adachi@toshiba.co.jp)tomo.adachi@toshiba.co.jp Tomoya Yamaura, Sony Corporation, (yamaura@wcs.sony.co.jp)yamaura@wcs.sony.co.jp Tsuguhide Aoki, Toshiba Corporation, (tsuguhide.aoki@toshiba.co.jp)tsuguhide.aoki@toshiba.co.jp Victor Stolpman, Nokia, (victor.stolpman@nokia.com)victor.stolpman@nokia.com Won-Joon Choi, Atheros Communications Inc., (wjchoi@atheros.com)wjchoi@atheros.com Xiaowen Wang, Agere Systems Inc., (xiaowenw@agere.com)xiaowenw@agere.com

4. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 4 Authors (continued) Yasuhiko Tanabe, Toshiba Corporation, (yasuhiko.tanabe@toshiba.co.jp)yasuhiko.tanabe@toshiba.co.jp Yasuhiro Tanaka, SANYO Electric Co. Ltd., (y_tanaka@gf.hm.rd.sanyo.co.jp)y_tanaka@gf.hm.rd.sanyo.co.jp Yoshiharu Doi, SANYO Electric Co. Ltd., (doi@gf.hm.rd.sanyo.co.jp)doi@gf.hm.rd.sanyo.co.jp Youngsoo Kim, Samsung Electronics Co. Ltd., (KimYoungsoo@samsung.com)KimYoungsoo@samsung.com Yuichi Morioka, Sony Corporation, (morioka@wcs.sony.co.jp)morioka@wcs.sony.co.jp

5. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 5 Scalable PHY Architecture Open Loop SDM Rate Feedback 2 Spatial Streams 20 MHz Regulatory Constraints 40 MHz Low Cost & Robust 6 to 140 Mbps 6 to 243 Mbps Robustness Enhancement Closed Loop TX BF 4 Spatial Streams Throughput Enhancement Conv. Coding LDPC Robustness Enhancement 6 to 630 Mbps Mandatory Hooks for Optional

6. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 6 Benefits of TGn Sync Preamble  Simple baseline channel estimation algorithm ■ No need for complex interpolation/smoothing algorithms  100% backward compatible  Low fluctuation of average receive power ■ low cost ADC & high precision AGC  Flexible per spatial stream training ■ SDM ■ Spatial Spreading (Walsh + CDD) for Nss < Ntx ■ TX Beam-forming ■ STBC (if TGn chooses to add that as an option)  Extensibility ■ upto 4 spatial streams, across 40MHz, with TX beamforming ■ Future PHYs will be backwards compatible to 11a/g/n

7. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 7 Why 40MHz is Mandatory? 0 20 40 60 80 100 120 140 160 180 200 220 240 260 05101520253035 SNR (dB) Over the Air Throughput (Mbps) 2x2-40 MHz 4x4-20 MHz 2x2-20 MHz w/ short GI 2x3-20 MHz w/ short GI 2x2 – 40 MHz Only 2 RF chains => Cost effective & low power Lower SNR at same throughput => Enhanced robustness Basic MIMO MCS set No impairments 1000 byte packets TGn channel model B Sweet spot for 100 Mbps top-of-MAC

8. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 8 Why introduce TX Beamforming? 1000 byte packets No impairment 20MHz, channel D 4 TX-antenna AP 2 RX-antenna client ~10 dB gain of 4x2-ABF over 2x2-SDM => cost effective client

9. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 9 Scalable MAC Architecture BASELINE MAC Robust Aggregation QoS Support (802.11e) Rx assisted link adapt. ADDITIONAL EFFICIENCY Header Compression Multi-Receiver Aggregation Bi-Directional Data Flow BA Enhancements LEGACY INTEROP. Long NAV Pairwise Spoofing Single-Ended Spoofing CHANNEL MANAGEMENT 20/40 MHz Modes Robust & Scalable MAC Architecture

10. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 10 MAC Summary of TGn Sync Proposal  Mandatory Features: ■ MAC level frame aggregation ■ RX assisted link adaptation ■ QoS support (802.11e) ■ MAC header compression ■ Block ACK compression ■ Legacy compatible protection ■ 20/40 MHz channel management  Optional Features: ■ Bi-directional data flow ■ MIMO RX Power management

11. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 11 RX Assisted Link Adaptation Protocol  Support for PHY closed-loop modes with on-the-air signalling  Request for training and feedback are carried in control frames  Rate feedback supported  Transmit beamforming training supported ■ sounding packet ■ calibration exchange  Timing of response is not constrained permitting a wide range of implementation options

12. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 12 Thank You!  We would like to thank all for their feedback, which has strengthed our proposal  We are a technology forum, and are looking forward to merger talks with other proposals  For more info, please visit www.tgnsync.org

13. doc.: IEEE 802.11-04/1506r0 Submission November 2004 Syed Aon Mujtaba, Agere Systems, et. al.Slide 13 Key Features  Scalable PHY & MAC Architecture  20 and 40 MHz channels – fully interoperable  Data rate scalable to 630 Mbps  Legacy interoperability – all modes  Robust preamble  Transmit beamforming  Robust frame aggregation  Bi-directional data flow  Receiver assisted fast link adaptation