1. MAC trigger frame padding follow up
July, 2016
MAC trigger frame padding follow up
Date:
Authors:
Name
Affiliation
Address
Phone
Zhou Lan
Broadcom
Matthew Fischer
Sriram Venkateswaran
Ron Porat
Leo Montreuil
Andrew Blanksby
Vinko Erceg
Zhou Lan, Broadcom et al

2. 2111 NE 25th Ave, Hillsboro OR 97124, USA
July, 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
Zhou Lan, Broadcom et al .

3. Authors (continued) July, 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
Zhou Lan, Broadcom et al

4. Authors (continued) July, 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
Zhou Lan, Broadcom et al

5. Authors (continued) July, 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
Zhou Lan, Broadcom et al

6. Authors (continued) July, 2016 James Yee Mediatek
Name
Affiliation
Address
Phone
James Yee
Mediatek
No. 1 Dusing 1st Road, Hsinchu, Taiwan  
Alan Jauh
Chingwa Hu
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
Zhou Lan, Broadcom et al .

7. Authors (continued) July, 2016 Peter Loc Jun Luo Yi Luo Yingpei Lin
Name
Affiliation
Address
Phone
Peter Loc
Huawei
Jun Luo
5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai
Yi Luo
F1-17, Huawei Base, Bantian, Shenzhen
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
Zhou Lan, Broadcom et al

8. Authors (continued) July, 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
Zhou Lan, Broadcom et al

9. Authors (continued) July, 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
Zhou Lan, Broadcom et al

10. Authors (continued) July, 2016 Zhou Lan, Broadcom et al Name
Affiliation
Address
Phone
Masahito Mori
Sony Corp.
Yusuke Tanaka
Yuichi Morioka
Kazuyuki Sakoda
William Carney
Minho Cheong
Newracom, Inc.
9008 Research Dr, Irvine, CA 92618
Reza Hedayat
Young Hoon Kwon
Yongho Seok
Daewon Lee
Yujin Noh
Sigurd Schelstraete
Quantenna
3450 W. Warren Ave, Fremont, CA 94538
Huizhao Wang
Zhou Lan, Broadcom et al

11. Abstract July, 2016 Passed motion related with Trigger Frame padding
The spec shall define a MAC padding scheme (TBD) for trigger frame sent in Non-HT PPDUs ( MU Motion 45, January 2016, see 16/0067r0 )
The draft specification shall specify that when a Trigger needs to be padded to allow sufficient UL PPDU transmission preparation time, the padding shall be at the MAC layer and the padding shall not include an FCS ( MAC Motion 75, March 2016, see 16/368r1 )
This contribution attempts to conclude the TBD MAC padding scheme for Trigger Frame
Comments that are associated
CID # 2890, 2896, 1643
Frame Control
Duration
(RA) TA
Common Info
Per User Info …
Padding
FCS
Octets: 2 6
TBD
 TBD 4
Zhou Lan, Broadcom et al

12. Recap: three proposed MAC padding options
July, 2016
Option 1-RU length indication in Common part
Option 2-Per STA part contains first/last Per STA part indication
Option 3-Using a special AID value to indicate the start of padding
Option 3 offers least overhead and simplest implementation with the following possible enhancement
No need to repeat the Per STA Block
No need to define Special RU allocation value
Zhou Lan, Broadcom et al

13. Proposal: harmonized MAC padding scheme
July, 2016
Proposal: harmonized MAC padding scheme
Option 4- an enhancement of option 3
MAC padding is performed with a special Per STA info
STAID value is set as a reserved value to indicate the Per STA info is padding and needs no processing
STAID[11:0] = 0xFFF is defined as the special STAID to indicate MAC padding
The rest padding bits are all set to one
The Padding field of the Trigger frame, if present, is an integer number of bytes >= 2: Padding field starts with special STAID[11:0] as 0xFFF and the rest bits of the Padding field are all set to one.
Zhou Lan, Broadcom et al

14. TF MAC Padding Duration
March, 2016
TF MAC Padding Duration
Propose that each STA may announce its “TF MAC Padding Duration Capability” in HE Capabilities Field.
Possible values: [0, 8, 16]us.
In the case of HE PPDU, “16us” duration results in at least one more OFDM symbol.
AP is allowed to transmit TF with any PPDU format (11a/g/n/ac/ax).
AP shall apply the TF MAC Padding field with length corresponding to the longest TF MAC Padding Duration Capability among all the destination STAs.
Zhou Lan, Broadcom et al

15. Length Calculation for TF MAC Padding Field
March, 2016
Length Calculation for TF MAC Padding Field
Case-1: For TF in Non-HT (OFDM), HT and VHT PPDUs
Case-2: For TF in HE PPDUs
where
Zhou Lan, Broadcom et al

16. March, 2016
On STBC
When transmitting a TF, the AP is free to use any PHY format, except STBC.
Proposed to disallow using STBC in a PPDU carrying Trigger Frame.
For STBC, buffering every two OFDM symbols to process may cause extra processing delay at the receiver.
Zhou Lan, Broadcom et al

17. July, 2016
Straw Poll
Do you support to direct TGax editor to adopt doc r0 into TGax Draft per editing instruction in doc r0 to conclude MAC trigger padding TBDs
Yes No
Abstain
Do you support to adopt the resolution text for comment CID 2890, 2896, 1634 as provided in r0.
Yes No
Abstain
Zhou Lan, Broadcom et al