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doc.: IEEE 802.11-15/1103r0
Submission
September 2015
Chittabrata Ghosh, et al. (Intel)Slide 1
DL Sounding Sequence with UL MU Feedback
Date: 2015-09-14
Authors:Name Affiliation Address Phone Email
Chittabrata Ghosh
Intel
2200 Mission College Blvd., Santa Clara, CA
95054, USA
+1-415-244-8904
Robert Stacey [email protected]
Eldad Perahia [email protected]
Shahrnaz Azizi [email protected]
Po-Kai Huang [email protected]
Qinghua Li [email protected]
Laurent Cariou [email protected]
Xiaogang Chen [email protected]
Rongzhen Yang [email protected]
Yaron Alpert [email protected]
Avi Mansour [email protected]
doc.: IEEE 802.11-15/1103r0
Submission Slide 2
Authors (continued)
Name Affiliation Address Phone Email
Albert Van Zelst
Qualcomm
Straatweg 66-S Breukelen, 3621 BR Netherlands [email protected]
Alfred Asterjadhi 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Bin Tian 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Carlos Aldana 1700 Technology Drive San Jose, CA 95110, USA [email protected]
George Cherian 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Gwendolyn Barriac 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Hemanth Sampath 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Menzo Wentink Straatweg 66-S Breukelen, 3621 BR Netherlands
Richard Van Nee Straatweg 66-S Breukelen, 3621 BR Netherlands [email protected]
Rolf De Vegt 1700 Technology Drive San Jose, CA 95110, USA [email protected]
Sameer Vermani 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Simone Merlin 5775 Morehouse Dr. San Diego, CA, USA [email protected]
Tevfik Yucek 1700 Technology Drive San Jose, CA 95110, USA [email protected]
VK Jones 1700 Technology Drive San Jose, CA 95110, USA [email protected]
Youhan Kim 1700 Technology Drive San Jose, CA 95110, USA [email protected]
Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission Slide 3
Authors (continued)Name Affiliation Address Phone Email
Ron Porat
Broadcom
Matthew Fischer [email protected]
Sriram Venkateswaran
Tu Nguyen
Vinko Erceg
Kiseon Ryu
LG Electronics19, Yangjae-daero
11gil, Seocho-gu, Seoul 137-130, Korea
+82-1023566164
Jinyoung Chun [email protected]
Jinsoo Choi [email protected]
Jeongki Kim [email protected]
Suhwook Kim [email protected]
Hyeyoung Choi [email protected]
Dongguk Lim [email protected]
Eunsung Park [email protected]
Jinmin Kim [email protected]
HanGyu Cho [email protected]
Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission Slide 4
Authors (continued)
Name Affiliation Address Phone Email
Phillip Barber
Huawei
The Lone Star State, TX pbarber@broadbandmobilete
ch.com
Peter Loc [email protected]
Le Liu F1-17, Huawei Base, Bantian, Shenzhen +86-18601656691 [email protected]
Jun Luo 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai [email protected]
Yi Luo F1-17, Huawei Base, Bantian, Shenzhen +86-18665891036 [email protected]
Yingpei Lin 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai [email protected]
Jiyong Pang 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai [email protected]
Zhigang Rong10180 Telesis Court, Suite
365, San Diego, CA 92121 NA
Rob Sun 303 Terry Fox, Suite 400 Kanata, Ottawa, Canada [email protected]
David X. Yang F1-17, Huawei Base, Bantian, Shenzhen [email protected]
Yunsong Yang10180 Telesis Court, Suite
365, San Diego, CA 92121 NA
Zhou Lan F1-17, Huawei Base, Bantian, SHenzhen +86-18565826350 [email protected]
Junghoon Suh 303 Terry Fox, Suite 400 Kanata, Ottawa, Canada [email protected]
Jiayin Zhang 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai +86-18601656691 [email protected]
Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission Slide 5
Authors (continued)
Chittabrata Ghosh, et al. (Intel)
September 2015
Name Affiliation Address Phone Email
Hongyuan Zhang
Marvell5488 Marvell Lane,Santa Clara, CA, 95054
408-222-2500
Yakun Sun [email protected]
Lei Wang [email protected]
Liwen Chu [email protected]
Jinjing Jiang [email protected]
Yan Zhang [email protected]
Rui Cao [email protected]
Sudhir Srinivasa [email protected]
Saga Tamhane [email protected]
Mao Yu [email protected]
Edward Au [email protected]
Hui-Ling Lou [email protected]
Thomas Derham Orange [email protected]
Brian HartCisco
170 W Tasman Dr, San Jose, CA 95134
Pooya Monajemi [email protected]
doc.: IEEE 802.11-15/1103r0
Submission Slide 6
Authors (continued)
Name Affiliation Address Phone Email
Fei Tong
Samsung
Innovation Park, Cambridge CB4 0DS (U.K.) +44 1223 434633 [email protected]
Hyunjeong Kang Maetan 3-dong; Yongtong-GuSuwon; South Korea +82-31-279-9028 [email protected]
Kaushik Josiam 1301, E. Lookout Dr, Richardson TX 75070 (972) 761 7437 [email protected]
Mark Rison Innovation Park, Cambridge CB4 0DS (U.K.) +44 1223 434600 [email protected]
Rakesh Taori 1301, E. Lookout Dr, Richardson TX 75070 (972) 761 7470 [email protected]
Sanghyun Chang Maetan 3-dong; Yongtong-GuSuwon; South Korea +82-10-8864-1751 [email protected]
Yasushi Takatori
NTT 1-1 Hikari-no-oka, Yokosuka, Kanagawa 239-0847 Japan
Yasuhiko Inoue [email protected]
Yusuke Asai [email protected]
Koichi Ishihara [email protected]
Akira Kishida [email protected]
Akira Yamada
NTT DOCOMO
3-6, Hikarinooka, Yokosuka-shi, Kanagawa, 239-8536, Japan [email protected]
Fujio Watanabe3240 Hillview Ave, Palo Alto,
CA 94304
watanabe@docomoinnovations.
comHaralabos
Papadopoulos
Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission Slide 7
Authors (continued)
Name Affiliation Address Phone Email
James Yee
Mediatek
No. 1 Dusing 1st Road, Hsinchu, Taiwan
+886-3-567-0766 [email protected]
Alan Jauh [email protected]
Chingwa Hu [email protected]
Frank Hsu [email protected]
Thomas Pare
MediatekUSA
2860 Junction Ave, San Jose, CA 95134, USA
+1-408-526-1899 [email protected]
ChaoChun Wang [email protected]
James Wang [email protected]
Jianhan Liu [email protected]
Tianyu Wu [email protected]
Russell Huang [email protected]
m
Bo Sun
ZTE#9 Wuxingduan,
Xifeng Rd., Xi’an, China
Kaiying Lv [email protected]
Yonggang Fang [email protected]
Ke Yao [email protected]
Weimin Xing [email protected]
Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission Slide 8
Name Affiliation Address Phone Email
Joonsuk Kim
AppleCupertino, CA
+1-408-974-5967
Aon Mujtaba [email protected]
Guoqing Li [email protected]
Eric Wong [email protected]
Chris Hartman [email protected]
Authors (continued)
Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission
Abstract
• In this contribution, we introduce the DL sounding sequence with UL MU feedback report from STAs
Slide 9 Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission
UL MU features in 11ax PAR and SFD
• In the 11ax PAR [1], – This project may include the capability to handle multiple simultaneous
communications in both the spatial and frequency domains, in both the UL and DL.
• The sounding protocol is in the IEEE 802.11ax SFD [2]– The amendment shall include a CSI feedback mechanism which allows for a
minimum feedback granularity of less than 20 MHz. [MU Motion 9, July 16, 2015, see [29]]
• In this contribution, we introduce the DL sounding sequence using the Trigger frame-based UL MU procedure
Slide 10 Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission
Baseline 11ac Sounding Protocol with Sequence of Beamformees
• The sounding sequence initiates with NDP Announcement frame– STA Info field(s) identifies the STAs from which the AP request
beamforming feedback• After SIFS interval, VHT NDP frame is transmitted by the AP
– First or only STA sends the VHT Compressed Beamforming Feedback frame after SIFS time of the NDP frame transmission
• Pair of VHT Beamforming Poll Report and Compressed Beamforming Feedback frames are exchanged with remaining STAs
Slide 11
September 2015
Chittabrata Ghosh, et al. (Intel)
doc.: IEEE 802.11-15/1103r0
Submission
Illustration of Baseline 11ac DL Sounding Protocol with Multiple Beamformees
Slide 12
Polling phase of sounding protocolFirst beamformee responds with Feedback frame
NDP Announcement initiates sounding sequence
September 2015
Chittabrata Ghosh, et al. (Intel)
doc.: IEEE 802.11-15/1103r0
Submission
UL MU Procedure defined in 11ax SFD [2]
• AP transmits a Trigger frame soliciting the transmission of UL MU PPDU from multiple STAs.
• STAs transmit UL MU (OFDMA or MU-MIMO) PPDU as immediate response to the Trigger frame.
• AP transmits acknowledgement frame in response to UL MU PPDU.
Slide 13
Trigger frame
UL MU PPDU
AP
STA1
Acknowledge frame
UL MU PPDUSTA2
UL MU PPDUSTA3
UL MU PPDUSTA4
Fre
quen
cy/
Spa
tial d
oma
in
September 2015
Chittabrata Ghosh, et al. (Intel)
doc.: IEEE 802.11-15/1103r0
Submission
Proposed DL Sounding Sequence with UL MU Feedback
• While 11ax can still use the baseline sounding process similar to 11ac, to improve the efficiency we propose a new sounding sequence using trigger-based UL MU procedure for feedback report collection
• The AP (beamformer) initiates DL sounding with NDP Announcement (NDP-A) frame
• The AP sends the HE NDP frame in SIFS time – Format of the HE NDP frame is TBD
• The AP sends a Trigger frame following SIFS time after the HE-NDP frame
• STAs with allocated resources indicated in Trigger frame responds with UL MU Beamforming Feedback frames
Slide 14
September 2015
Chittabrata Ghosh, et al. (Intel)
doc.: IEEE 802.11-15/1103r0
Submission
Illustration of DL Sounding Sequence
Slide 15
NDP-A Trigger Frame
Beamformer
Beamformee 1
Beamformee 2
Beamforming Feedback frame
Beamformee 3
NDP
September 2015
Beamforming Feedback frame
Beamforming Feedback frame
Chittabrata Ghosh, et al. (Intel)
doc.: IEEE 802.11-15/1103r0
Submission
Summary
• In this presentation, we proposed the DL sounding sequence with UL MU feedback reports from STAs
Slide 16 Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission
References
[1] IEEE 802.11-14/0165r1 “802.11 HEW SG Proposed PAR”
[2] IEEE 802.11-15/0132r2 “Specification Framework for Tax”
Slide 17 Chittabrata Ghosh, et al. (Intel)
September 2015
doc.: IEEE 802.11-15/1103r0
Submission
Straw-poll 1
• Do you agree to include the DL sounding sequence illustrated in Slide 15 to the spec framework?
Yes:
No:
Abstain
Slide 18
September 2015
Chittabrata Ghosh, et al. (Intel)
