1. Packet Extension Follow Up
January, 2016
Packet Extension Follow Up
Date:
Authors:
Name
Affiliation
Address
Phone
Ron Porat
Broadcom
Sriram Venkateswaran
Matthew Fischer
Zhou Lan
Mingyue Ji
Leo Montreuil
Andrew Blanksby
Vinko Erceg
Ron Porat, Broadcom, et. al.

2. 2111 NE 25th Ave, Hillsboro OR 97124, USA
January, 2016
Authors (continued)
Robert Stacey
Intel
2111 NE 25th Ave, Hillsboro OR 97124, USA     
Shahrnaz Azizi
Po-Kai Huang
Qinghua Li
Xiaogang Chen
Chitto Ghosh
Laurent Cariou
Yaron Alpert
Assaf Gurevitz
Ilan Sutskover
Ron Porat, Broadcom, et. al.

3. Authors (continued) January, 2016 Hongyuan Zhang Marvell
Name
Affiliation
Address
Phone
Hongyuan Zhang
Marvell
5488 Marvell Lane, Santa Clara, CA, 95054
Yakun Sun
Lei Wang
Liwen Chu
Jinjing Jiang
Yan Zhang
Rui Cao
Sudhir Srinivasa
Bo Yu
Saga Tamhane
Mao Yu
Xiayu Zheng
Christian Berger
Niranjan Grandhe
Hui-Ling Lou
Ron Porat, Broadcom, et. al.

4. Authors (continued) January, 2016 Alice Chen Albert Van Zelst
Name
Affiliation
Address
Phone
Alice Chen
Qualcomm
5775 Morehouse Dr. San Diego, CA, USA
Albert Van Zelst
Straatweg 66-S Breukelen, 3621 BR Netherlands
Alfred Asterjadhi
Arjun Bharadwaj
Bin Tian
Carlos Aldana
1700 Technology Drive San Jose, CA 95110, USA
George Cherian
Gwendolyn Barriac
Hemanth Sampath
Lin Yang
Menzo Wentink
Naveen Kakani
2100 Lakeside Boulevard Suite 475, Richardson TX 75082, USA
Raja Banerjea
1060 Rincon Circle San Jose CA 95131, USA
Richard Van Nee
Ron Porat, Broadcom, et. al.

5. Authors (continued) January, 2016 Rolf De Vegt Sameer Vermani Qualcomm
Name
Affiliation
Address
Phone
Rolf De Vegt
Qualcomm
1700 Technology Drive San Jose, CA 95110, USA
Sameer Vermani
5775 Morehouse Dr. San Diego, CA, USA
Simone Merlin
Tao Tian
Tevfik Yucek  
VK Jones
Youhan Kim
Ron Porat, Broadcom, et. al.

6. Authors (continued) January, 2016 James Yee Mediatek
Name
Affiliation
Address
Phone
James Yee
Mediatek
No. 1 Dusing 1st Road, Hsinchu, Taiwan  
Alan Jauh
Frank Hsu
Thomas Pare
USA
2860 Junction Ave, San Jose, CA 95134, USA
ChaoChun Wang
James Wang
Jianhan Liu
Tianyu Wu
Russell Huang
Joonsuk Kim
Apple
Aon Mujtaba  
Guoqing Li
Eric Wong
Chris Hartman
Ron Porat, Broadcom, et. al.

7. Authors (continued) January, 2016 Peter Loc Le Liu Jun Luo Yi Luo
Name
Affiliation
Address
Phone
Peter Loc
Huawei
Le Liu
F1-17, Huawei Base, Bantian, Shenzhen
Jun Luo
5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai
Yi Luo
Yingpei Lin
Jiyong Pang
Zhigang Rong
10180 Telesis Court, Suite 365, San Diego, CA  NA
Rob Sun
303 Terry Fox, Suite 400 Kanata, Ottawa, Canada
David X. Yang
Yunsong Yang
Junghoon Suh
Jiayin Zhang
Edward Au
Teyan Chen
Yunbo Li
Ron Porat, Broadcom, et. al.

8. Authors (continued) January, 2016 Jinmin Kim LG Electronics
Name
Affiliation
Address
Phone
Jinmin Kim
LG Electronics
19, Yangjae-daero 11gil, Seocho-gu, Seoul , Korea
Kiseon Ryu
Jinyoung Chun
Jinsoo Choi
Jeongki Kim
Dongguk Lim
Suhwook Kim
Eunsung Park
JayH Park
HanGyu Cho
Thomas Derham
Orange
Bo Sun
ZTE
#9 Wuxingduan, Xifeng Rd., Xi'an, China
Kaiying Lv
Yonggang Fang
Ke Yao
Weimin Xing
Brian Hart
Cisco Systems
170 W Tasman Dr, San Jose, CA 95134
Pooya Monajemi
Ron Porat, Broadcom, et. al.

9. Authors (continued) January, 2016 Fei Tong Samsung Hyunjeong Kang
Name
Affiliation
Address
Phone
Fei Tong
Samsung
Innovation Park, Cambridge CB4 0DS (U.K.)
Hyunjeong Kang
Maetan 3-dong; Yongtong-Gu Suwon; South Korea
Kaushik Josiam
1301, E. Lookout Dr, Richardson TX 75070
(972)
Mark Rison
Rakesh Taori
(972)
Sanghyun Chang
Yasushi Takatori
NTT
1-1 Hikari-no-oka, Yokosuka, Kanagawa Japan  
Yasuhiko Inoue  
Shoko Shinohara
Yusuke Asai  
Koichi Ishihara  
Junichi Iwatani  
Akira Yamada
NTT DOCOMO
3-6, Hikarinooka, Yokosuka-shi, Kanagawa, , Japan
 3759
Ron Porat, Broadcom, et. al.

10. Authors (continued) January, 2016 Ron Porat, Broadcom, et. al. Name
Affiliation
Address
Phone
Masahito Mori
Sony Corp.
Yusuke Tanaka
Yuichi Morioka
Kazuyuki Sakoda
William Carney
Ron Porat, Broadcom, et. al.

11. January, 2016
Background
In 11ax, the number of tones has quadrupled relative to 11ac (for the same BW) but SIFS has remained unchanged.
Packet Extension (PE) is an optional TBD waveform added to the end of the frame to postpone the start of SIFS and provide additional processing time for the receiver
A receiver advertises the requirement PE as a function of constellation using two capability thresholds for each {NSS, BW/RU} during association
However, the current IEEE spec framework has the following restrictions on the use of PE
When  80MHz is supported, no thresholds are defined for RU size less than or equal to 242 tones (20MHz); otherwise, thresholds are defined down to a TBD RU size
Ron Porat, Broadcom, et. al.

12. January, 2016
Proposal
For some low-power use cases it would be advantageous to use Packet Extension (PE) for 20MHz bandwidth / Resource Unit (RU) 242
E.g. use PE rather than run PHY clocks faster, or add hardware, to meet SIFS
Propose changing the current text:
When  80MHz is supported, no thresholds are defined for RU size less than or equal to 242 tones (20MHz); otherwise, thresholds are defined down to a TBD RU size To
Packet extension device capability thresholds are defined for all RU sizes greater than or equal to 242 tones. No packet extension permitted and no thresholds defined for an RU size less than 242 tones
Hence device capability constellation thresholds for the max packet extension modes of 8µs and 16µs will be defined for RU sizes  242 tones
Ron Porat, Broadcom, et. al.

13. January, 2016
SP #1
Do you support changing the current text in the TG Specification Framework:
When  80MHz is supported, no thresholds are defined for RU size less than or equal to 242 tones (20MHz); otherwise, thresholds are defined down to a TBD RU size
with:
Packet extension device capability thresholds are defined for all RU sizes greater than or equal to 242 tones. No packet extension permitted and no thresholds defined for an RU size less than 242 tones
Yes No
Abstain
Ron Porat, Broadcom, et al.