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Maximal A-MPDU Size Date: 2016-03-12 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 Liwen Chu (Marvell) et. al.,
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Authors (continued) Alfred Asterjadhi Albert Van Zelst Alice Chen
Name Affiliation Address Phone Alfred Asterjadhi Qualcomm 5775 Morehouse Dr. San Diego, CA, USA Albert Van Zelst Straatweg 66-S Breukelen, 3621 BR Netherlands Alice Chen 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 Liwen Chu et. al.
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Authors (continued) Rolf De Vegt Qualcomm Sameer Vermani Simone Merlin
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 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 Liwen Chu et. al.
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No. 1 Dusing 1st Road, Hsinchu, Taiwan +886-3-567-0766
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 Zhou Lan Russell Huang Joonsuk Kim Apple Aon Mujtaba Guoqing Li Eric Wong Chris Hartman Liwen Chu et. al.
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Authors (continued) Peter Loc Le Liu Jun Luo Yi Luo Huawei Yingpei Lin
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 Liwen Chu et. al.
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Authors (continued) Jinmin Kim Kiseon Ryu Jinyoung Chun
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 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 Liwen Chu et. al.
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Authors (continued) Fei Tong Hyunjeong Kang Samsung Kaushik Josiam
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 Fujio Watanabe 3240 Hillview Ave, Palo Alto, CA 94304 Haralabos Papadopoulos Liwen Chu et. al.
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Authors (continued) Name Affiliation Ron Porat Broadcom
Address Phone Ron Porat Broadcom Sriram Venkateswaran Matthew Fischer Leo Montreuil Andrew Blanksby Vinko Erceg Thomas Derham Masahito Mori Sony Corp. Yusuke Tanaka Yuichi Morioka Kazuyuki Sakoda William Carney Liwen Chu et. al.
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Introduction Maximum A-MPDU size that a VHT STA can announce is 220 octets. Maximum MPDU size that a VHT STA can announce is octets. Maximum number of MPDUs in an A-MPDU is 64. The Maximum number of MPDUs in multi-TID A-MPDU may be more than 64. Accordingly, maximum A-MPDU size should be increased if there is no PHY restriction. Liwen Chu et. al.
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PHY Restriction to A-MPDU Size
The max A-MPDU duration in HE PPDU is limited by the max number of symbols indicated by L-SIG length, which is 5.484ms. aPSDUMaxLength in VHT PPDU is octets aPSDUMaxLength in HE PPDU should be more than aPSDUMaxLength in VHT PPDU because of less percentage GI overhead in HE OFDM symbol. Data symbols in an HE PPDU shall use a DFT period of 12.8 µs. Data symbols in an HE PPDU shall support guard interval durations of 0.8 µs, 1.6 µs and 3.2 µs. HE SU PPDU format HE MU PPDU format Liwen Chu et. al.
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MPDUs of Multi-TID A-MPDU/BA
Originally, BA negotiation negotiates buffer size for one TID. At most 64 MPDUs can be transmitted in an A-MPDU. With multi-TID BA, a multi-TID BA can acknowledge at most 64*8 MPDUs. With super BA and multi-TID BA, a multi-TID BA can acknowledge at most 256*8 MPDUs. Liwen Chu et. al.
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Maximal A-MPDU Size In 11ac, the maximal A-MPDU length is 220=1,048,576 bytes. This is enough for 11ac since the maximal MPDU length is 11454bytes and the maximal receiving buffer size of a block ack is 64 (11,454*64=733,056). With multi-TID BA and/or super BA, 1,048,576 bytes are not enough if one A-MPDU has large number of MPDUs, e.g. 256 MPDUs (11,454*256=2,932,224). We propose a HE device can announce two maximal A-MPDU length 221, 222 octets besides maximal A-MPDU length in VHT Capabilities element. Liwen Chu et. al.
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Straw Poll Do you support adding the following text to 11ax SFD:
A HE STA can announce its maximum A-MPDU length limits to 221, 222? Liwen Chu et. al.
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