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Random Access with Trigger Frames using OFDMA

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1 Random Access with Trigger Frames using OFDMA
May 2015 Random Access with Trigger Frames using OFDMA Date: Authors: Name Affiliation Address Phone Chittabrata Ghosh Intel 2200 Mission College Blvd., Santa Clara, CA 95054, USA     Robert Stacey Eldad Perahia Shahrnaz Azizi Po-Kai Huang Qinghua Li Laurent Cariou Xiaogang Chen Rongzhen Yang Chittabrata Ghosh, et al. (Intel)

2 Authors (continued) May 2015 Albert Van Zelst Qualcomm
Name Affiliation Address Phone Albert Van Zelst Qualcomm Straatweg 66-S Breukelen, 3621 BR Netherlands Alfred Asterjadhi 5775 Morehouse Dr. San Diego, CA, USA Bin Tian Carlos Aldana 1700 Technology Drive San Jose, CA 95110, USA George Cherian Gwendolyn Barriac Hemanth Sampath Menzo Wentink Richard Van Nee Rolf De Vegt Sameer Vermani Simone Merlin Tevfik Yucek   VK Jones Youhan Kim Chittabrata Ghosh, et al. (Intel)

3 19, Yangjae-daero 11gil, Seocho-gu, Seoul 137-130, Korea
May 2015 Authors (continued) Name Affiliation Address Phone Ron Porat Broadcom Matthew Fischer Sriram Venkateswaran Tu Nguyen Vinko Erceg Kiseon Ryu LG Electronics 19, Yangjae-daero 11gil, Seocho-gu, Seoul , Korea   Wookbong Lee Jinyoung Chun Jinsoo Choi Jeongki Kim Suhwook Kim Hyeyoung Choi Dongguk Lim Eunsung Park Jinmin Kim HanGyu Cho Chittabrata Ghosh, et al. (Intel)

4 Authors (continued) May 2015 Phillip Barber Huawei Peter Loc Le Liu
Name Affiliation Address Phone Phillip Barber Huawei The Lone Star State, TX Peter Loc 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 Zhou Lan F1-17, Huawei Base, Bantian, SHenzhen Junghoon Suh Jiayin Zhang Chittabrata Ghosh, et al. (Intel)

5 Authors (continued) May 2015 Hongyuan Zhang Marvell
Name Affiliation Address Phone Hongyuan Zhang Marvell 5488 Marvell Lane, Santa Clara, CA, 95054 Yakun Sun Lei Wang Liwen Chu Mingguan Xu Jinjing Jiang Yan Zhang Rui Cao Jie Huang Sudhir Srinivasa Saga Tamhane Mao Yu Edward Au Hui-Ling Lou Thomas Derham Orange Brian Hart Cisco 170 W Tasman Dr, San Jose, CA 95134 Pooya Monajemi Chittabrata Ghosh, et al. (Intel)

6 Authors (continued) May 2015 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 Yusuke Asai Koichi Ishihara Akira Kishida Akira Yamada NTT DOCOMO 3-6, Hikarinooka, Yokosuka-shi, Kanagawa, , Japan Fujio Watanabe 3240 Hillview Ave, Palo Alto, CA 94304 Haralabos Papadopoulos Chittabrata Ghosh, et al. (Intel)

7 Authors (continued) May 2015 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 Bo Sun ZTE #9 Wuxingduan, Xifeng Rd., Xi’an, China Kaiying Lv Yonggang Fang Ke Yao Weimin Xing Chittabrata Ghosh, et al. (Intel)

8 Authors (continued) May 2015 Joonsuk Kim Apple Cupertino, CA
Name Affiliation Address Phone Joonsuk Kim Apple Cupertino, CA     Aon Mujtaba Guoqing Li Eric Wong Chris Hartman Chittabrata Ghosh, et al. (Intel)

9 May 2015 Abstract In this contribution, we present a random access mechanism for UL MU transmissions We propose that the Trigger frame support the allocation of resource units for random access. STAs can randomly select among these resources for their UL MU PPDU transmissions Chittabrata Ghosh, et al. (Intel)

10 UL MU features in 11ax PAR and SFD
May 2015 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. Chapter 4 Multi-user (MU) features of 11ax SFD [2] mentions: An UL MU PPDU (MU-MIMO or OFDMA) is sent as an immediate response (IFS TBD) to a Trigger frame (format TBD) sent by the AP UL MU procedure [3] is proposed in March IEEE meeting The Trigger frame indicates the STA ID and allocated resource unit However, several scenarios exist where the AP is unaware that a particular STA has traffic to send Associated ax devices waking up from sleep state Unassociated STAs intending to reach an AP Chittabrata Ghosh, et al. (Intel)

11 Motivation for Random Access for UL MU Transmissions
May 2015 Motivation for Random Access for UL MU Transmissions OFDMA supports more flexibility on packet transmission: Closing the link with significant asymmetry (>=10dB) in transmit power between AP and STAs located far away STAs use the Trigger frame allowing random access (TF-R) for UL transmissions on narrow bandwidth Unassociated STAs intending to send UL frames to an AP STAs use TF-R for UL management frames (Association Request, Probe Request, etc.) Reduces SU UL transmissions from unassociated STAs UL MU transmissions using TF-Rs reduce number of SU UL transmissions in conventional EDCA-based access Efficient, specially for short packet transmissions with bursty traffic Chittabrata Ghosh, et al. (Intel)

12 TF-R for MU UL Transmissions
May 2015 TF-R for MU UL Transmissions We propose to define a TF-R which includes at least one allocation for a resource  that can be randomly accessed by more than one STA The random resource selection procedure in a TF-R is TBD The selected resource is accessed as an immediate response to the TF-R for UL transmission Chittabrata Ghosh, et al. (Intel)

13 Illustration of Random Access with TF-R with Existing UL MU Procedure
May 2015 Illustration of Random Access with TF-R with Existing UL MU Procedure Trigger Frame (TF-R) (random access) Trigger Frame (no random access) STAs 1 and 2 detects 1st RU RU 1 ACK RU 1 AID 12 UL MU PPDU (AID 12) ACK RU 2 RU 1 AID 14 UL MU PPDU (AID 14) STA 2 selects RU 1 randomly UL MU PPDU (STA 2) RU 3 UL MU PPDU (STA 1) RU 1 AID 21 UL MU PPDU (AID 21) UL MU Procedure as in SFD [3] STA 1 selects RU 3 randomly Chittabrata Ghosh, et al. (Intel)

14 May 2015 Summary In this presentation, we proposed a random access mechanism with Trigger frames for UL MU transmissions Chittabrata Ghosh, et al. (Intel)

15 Straw-poll Do you agree to add to the spec framework?
May 2015 Straw-poll Do you agree to add to the spec framework? The spec shall define a Trigger frame that allocates resources for random access. Yes: No: Abstain Chittabrata Ghosh, et al. (Intel)

16 References [1] IEEE 802.11-14/0165r1 “802.11 HEW SG Proposed PAR”
May 2015 References [1] IEEE /0165r1 “ HEW SG Proposed PAR” [2] IEEE /0132r2 “Specification Framework for TGax” [3] IEEE /0365r0 “UL MU Procedure” Chittabrata Ghosh, et al. (Intel)

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