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Adjustment Rules for Adaptive CCA and TPC
Mar 2016 Adjustment Rules for Adaptive CCA and TPC Date: Authors: Name Affiliation Address Phone Jianhan Liu Mediatek USA 2860 Junction Ave, San Jose, CA 95134, USA Thomas Pare ChaoChun Wang James Wang Tianyu Wu Russell Huang James Yee No. 1 Dusing 1st Road, Hsinchu, Taiwan Alan Jauh Frank Hsu Joonsuk Kim Apple Aon Mujtaba Guoqing Li Eric Wong Chris Hartman
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2111 NE 25th Ave, Hillsboro OR 97124, USA
Authors: Name Affiliation Address Phone Ron Porat Broadcom Sriram Venkateswaran Matthew Fischer Zhou Lan Leo Montreuil Andrew Blanksby Vinko Erceg 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
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Authors (continued) 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
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Authors (continued) Alice Chen Albert Van Zelst Alfred Asterjadhi
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
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Authors (continued) Rolf De Vegt Sameer Vermani Qualcomm 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
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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
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Authors (continued) 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
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Authors (continued) Fei Tong Samsung Hyunjeong Kang 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 3759
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Authors (continued) Name Affiliation Address Phone Email 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
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11ax SFD Text for Adaptive CCA and Transmit Power Control
SFD text: “An 11ax STA regards a valid OBSS PPDU as not having been received at all (e.g., should not update its NAV), except that the medium condition shall indicate BUSY during the period of time that is taken by the receiving STA to validate that the PPDU is from an Inter-BSS, but not longer than the time indicated as the length of the PPDU payload if the RXPWR of the received PPDU is below the OBSS_PD threshold and TBD conditions are met, noting that the OBSS_PD threshold is accompanied by a TXPWR value and a reduction in the TXPWR may be accompanied by an TBD increase in the OBSS_PD threshold value.” The spec text does not specify the TBD conditions and TBD increase in the OBSS_PD threshold Mediatek
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ED Threshold Adjustment
There are many IEEE contributions (70+ and counting) on the subject of adaptive CCA. Extensive simulation has been done (see, e.g., Ref 15, Sony’s simulation) 3GPP LAA also adopted an ED threshold adaptation (lower transmit power higher ED threshold) in the presence of other technologies 11ax should adopt similar adaptation rules for fair co-existence with 3GPP LAA and among .11 networks. . Mediatek
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Adjustment Rule for OBSS_PD
Preserves fairness for the lower power devices TX_PWRref can be a TBD level (preferred value is 23 dBm) Class A: TX_PWR=transmit power Class B: TX_PWR=transmit power+TBD dB Mediatek
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Adjustment Rule for OBSS_PD
Linear Adjustment Range OBSS_PDmax -62dBm LAA -72dBm OBSS_Pdmin=-74dBm Legacy -82dBm OBSS_Pdmin=-82dBm TX_PWR 23dBm PWRref
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Straw Poll 1 Do you support to replace the text in 5.1 of SFD P35L1“and a reduction in the TXPWR may be accompanied by an TBD increase in the OBSS_PD threshold value" with the “following adjustment rules: Mediatek
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Reference [1] DCN r1 “The Effect of Preamble Error Model on MAC Simulator”, Po-Kai Huang, Intel [2] DCN r0 “OBSS preamble detection”, Gwen Barriac , Qualcomm [3] DCN “Spatial Reuse and Coexistence with Legacy Devices” James Wang, Mediatek [4] DensiFi “Spatial-Reuse Prioritized Channel Access Schemes “, Jianhan Liu, Mediatek [5] IEEE ah D4.0 Clause P317L43 (SR EDCAF procedure) [6] DensiFi “Intel Spatial Reuse for close links with PHY signaling” Po-Kai Huang [7] DCN r1 “Improved Spatial Reuse Feasibility – Part I” Ron Porat, Broadcom [8] DCN “Link Aware CCA” Brian Hart, Cisco [9]DCN “Spatial Reuse and Coexistence with Legacy Devices” James Wang, Mediatek [10] DCN r1 “OBSS reuse mechanism which preserves fairness” Imad Jamil, Orange [11] DCN r1 “CCA Study in Residential Scenario - Part 2” Gwen Barriac, Qualcomm [12] DCN r0 “CCA Study in Residential Scenario”, Gwen Barriac, Qualcomm [13] DCN r2 “Considerations for Adaptive CCA” Reza Hedayat, Newracom [14] DCN r0 “CCA Revisited” Amin Jafarian, Newracom [15[ DCN 15/1045r0 Dynamic CCA control and TPC Simulation Results with SS1~SS3, Takeshi Itagaki, Sony Mediatek
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