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Doc.: IEEE 802.11-15/1107r0 Submission September 2015 Chittabrata Ghosh, et al. (Intel)Slide 1 Power Save with Random Access Date: 2015-09-14 Authors:

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1 doc.: IEEE 802.11-15/1107r0 Submission September 2015 Chittabrata Ghosh, et al. (Intel)Slide 1 Power Save with Random Access Date: 2015-09-14 Authors: NameAffiliationAddressPhoneEmail Chittabrata Ghosh Intel 2200 Mission College Blvd., Santa Clara, CA 95054, USA +1-415-244-8904 chittabrata.ghosh@intel.com Robert Stacey robert.stacey@intel.com Eldad Perahia eldad.perahia@intel.com Shahrnaz Azizi shahrnaz.azizi@intel.com Po-Kai Huang po-kai.huang@intel.com Qinghua Li quinghua.li@intel.com Laurent Cariou laurent.cariou@intel.com Xiaogang Chen xiaogang.c.chen@intel.com Rongzhen Yang rongzhen.yang@intel.com Yaron Alpert yaron.alpert@intel.com Avi Mansour avi.mansour@intel.com

2 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 2 Authors (continued) NameAffiliationAddressPhoneEmail Albert Van Zelst Qualcomm Straatweg 66-S Breukelen, 3621 BR Netherlands allert@qti.qualcomm.com Alfred Asterjadhi 5775 Morehouse Dr. San Diego, CA, USA aasterja@qti.qualcomm.com Bin Tian 5775 Morehouse Dr. San Diego, CA, USA btian@qti.qualcomm.com Carlos Aldana 1700 Technology Drive San Jose, CA 95110, USA caldana@qca.qualcomm.com George Cherian 5775 Morehouse Dr. San Diego, CA, USA gcherian@qti.qualcomm.com Gwendolyn Barriac 5775 Morehouse Dr. San Diego, CA, USA gbarriac@qti.qualcomm.com Hemanth Sampath 5775 Morehouse Dr. San Diego, CA, USA hsampath@qti.qualcomm.com Menzo Wentink Straatweg 66-S Breukelen, 3621 BR Netherlands mwentink@qti.qualcomm.com Richard Van Nee Straatweg 66-S Breukelen, 3621 BR Netherlands rvannee@qti.qualcomm.com Rolf De Vegt 1700 Technology Drive San Jose, CA 95110, USA rolfv@qca.qualcomm.com Sameer Vermani 5775 Morehouse Dr. San Diego, CA, USA svverman@qti.qualcomm.com Simone Merlin 5775 Morehouse Dr. San Diego, CA, USA smerlin@qti.qualcomm.com Tevfik Yucek 1700 Technology Drive San Jose, CA 95110, USA tyucek@qca.qualcomm.com VK Jones 1700 Technology Drive San Jose, CA 95110, USA vkjones@qca.qualcomm.com Youhan Kim 1700 Technology Drive San Jose, CA 95110, USA youhank@qca.qualcomm.com Chittabrata Ghosh, et al. (Intel) September 2015

3 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 3 Authors (continued) NameAffiliationAddressPhoneEmail Ron Porat Broadcom rporat@broadcom.com Matthew Fischer mfischer@broadcom.com Sriram Venkateswaran Tu Nguyen Vinko Erceg Kiseon Ryu LG Electronics 19, Yangjae-daero 11gil, Seocho-gu, Seoul 137-130, Korea +82-1023566164 kiseon.ryu@lge.com Jinyoung Chun jiny.chun@lge.com Jinsoo Choi js.choi@lge.com Jeongki Kim jeongki.kim@lge.com Suhwook Kim suhwook.kim@lge.com Hyeyoung Choi hy0117.choi@lge.com Dongguk Lim dongguk.lim@lge.com Eunsung Park esung.park@lge.com Jinmin Kim jinmin1230.kim@lge.com HanGyu Cho hg.cho@lge.com Chittabrata Ghosh, et al. (Intel) September 2015

4 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 4 Authors (continued) NameAffiliationAddressPhoneEmail Phillip Barber Huawei The Lone Star State, TX pbarber@broadbandmobilete ch.com Peter Loc peterloc@iwirelesstech.com Le Liu F1-17, Huawei Base, Bantian, Shenzhen +86-18601656691 liule@huawei.com Jun Luo 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai jun.l@huawei.com Yi Luo F1-17, Huawei Base, Bantian, Shenzhen +86-18665891036 Roy.luoyi@huawei.com Yingpei Lin 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai linyingpei@huawei.com Jiyong Pang 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai pangjiyong@huawei.com Zhigang Rong 10180 Telesis Court, Suite 365, San Diego, CA 92121 NA zhigang.rong@huawei.com Rob Sun 303 Terry Fox, Suite 400 Kanata, Ottawa, Canada Rob.Sun@huawei.com David X. Yang F1-17, Huawei Base, Bantian, Shenzhen david.yangxun@huawei.com Yunsong Yang 10180 Telesis Court, Suite 365, San Diego, CA 92121 NA yangyunsong@huawei.com Zhou Lan F1-17, Huawei Base, Bantian, SHenzhen +86-18565826350 Lanzhou1@huawei.com Junghoon Suh 303 Terry Fox, Suite 400 Kanata, Ottawa, Canada Junghoon.Suh@huawei.com Jiayin Zhang 5B-N8, No.2222 Xinjinqiao Road, Pudong, Shanghai +86-18601656691 zhangjiayin@huawei.com Chittabrata Ghosh, et al. (Intel) September 2015

5 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 5 Authors (continued) Chittabrata Ghosh, et al. (Intel) September 2015 NameAffiliationAddressPhoneEmail Hongyuan Zhang Marvell 5488 Marvell Lane, Santa Clara, CA, 95054 408-222-2500 hongyuan@marvell.com Yakun Sun yakunsun@marvell.com Lei Wang Leileiw@marvell.com Liwen Chu liwenchu@marvell.com Jinjing Jiang jinjing@marvell.com Yan Zhang yzhang@marvell.com Rui Cao ruicao@marvell.com Sudhir Srinivasa sudhirs@marvell.com Saga Tamhane sagar@marvell.com Mao Yu my@marvel..com Edward Au edwardau@marvell.com Hui-Ling Lou hlou@marvell.com Thomas DerhamOrange thomas.derham@orange.com Brian Hart Cisco 170 W Tasman Dr, San Jose, CA 95134 brianh@cisco.com Pooya Monajemi pmonajem@cisco.com

6 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 6 Authors (continued) NameAffiliationAddressPhoneEmail Fei Tong Samsung Innovation Park, Cambridge CB4 0DS (U.K.) +44 1223 434633 f.tong@samsung.com Hyunjeong Kang Maetan 3-dong; Yongtong-Gu Suwon; South Korea +82-31-279-9028 hyunjeong.kang@samsung.com Kaushik Josiam 1301, E. Lookout Dr, Richardson TX 75070 (972) 761 7437 k.josiam@samsung.com Mark Rison Innovation Park, Cambridge CB4 0DS (U.K.) +44 1223 434600 m.rison@samsung.com Rakesh Taori 1301, E. Lookout Dr, Richardson TX 75070 (972) 761 7470 rakesh.taori@samsung.com Sanghyun Chang Maetan 3-dong; Yongtong-Gu Suwon; South Korea +82-10-8864-1751 s29.chang@samsung.com Yasushi Takatori NTT 1-1 Hikari-no-oka, Yokosuka, Kanagawa 239-0847 Japan takatori.yasushi@lab.ntt.co.jp Yasuhiko Inoue inoue.yasuhiko@lab.ntt.co.jp Yusuke Asai asai.yusuke@lab.ntt.co.jp Koichi Ishihara ishihara.koichi@lab.ntt.co.jp Akira Kishida kishida.akira@lab.ntt.co.jp Akira Yamada NTT DOCOMO 3-6, Hikarinooka, Yokosuka- shi, Kanagawa, 239-8536, Japan yamadaakira@nttdocomo.com Fujio Watanabe 3240 Hillview Ave, Palo Alto, CA 94304 watanabe@docomoinnovations. com Haralabos Papadopoulos hpapadopoulos@docomoinnova tions.com Chittabrata Ghosh, et al. (Intel) September 2015

7 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 7 Authors (continued) NameAffiliationAddressPhoneEmail James Yee Mediatek No. 1 Dusing 1 st Road, Hsinchu, Taiwan +886-3-567-0766 james.yee@mediatek.com Alan Jauh alan.jauh@mediatek.com Chingwa Hu chinghwa.yu@mediatek.co m Frank Hsu frank.hsu@mediatek.com Thomas Pare Mediatek USA 2860 Junction Ave, San Jose, CA 95134, USA +1-408-526-1899 thomas.pare@mediatek.com ChaoChun Wang chaochun.wang@mediatek.c om James Wang james.wang@mediatek.com Jianhan Liu Jianhan.Liu@mediatek.com Tianyu Wu tianyu.wu@mediatek.com Russell Huang russell.huang@mediatek.co m Bo Sun ZTE #9 Wuxingduan, Xifeng Rd., Xi’an, China sun.bo1@zte.com.cn Kaiying Lv lv.kaiying@zte.com Yonggang Fang yfang@ztetx.com Ke Yao yao.ke5@zte.com.cn Weimin Xing xing.weimin@zte.com.cn Chittabrata Ghosh, et al. (Intel) September 2015

8 doc.: IEEE 802.11-15/1107r0 SubmissionSlide 8 NameAffiliationAddressPhoneEmail Joonsuk Kim Apple Cupertino, CA +1-408-974-5967 joonsuk@apple.com Aon Mujtaba mujtaba@apple.com Guoqing Li guoqing_li@apple.com Eric Wong ericwong@apple.com Chris Hartman chartman@apple.com Authors (continued) Chittabrata Ghosh, et al. (Intel) September 2015

9 doc.: IEEE 802.11-15/1107r0 Submission Abstract In this contribution, we propose a signaling mechanism that allows the Beacon frame to indicate the target transmission time(s) of one or more Trigger frame(s) that allocates resources for random access We propose a signaling mechanism to indicate to STAs about a cascaded sequence of Trigger frames for random access Slide 9Chittabrata Ghosh, et al. (Intel) September 2015

10 doc.: IEEE 802.11-15/1107r0 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. We have introduced the random access mechanism with Trigger frames using OFDMA [2] –The spec shall define a Trigger frame that allocates resources for random access. [3] In this contribution, we introduce the power saving features for the random access mechanism Slide 10Chittabrata Ghosh, et al. (Intel) September 2015

11 doc.: IEEE 802.11-15/1107r0 Submission Illustration of Random Access with TF-R with Existing UL MU Procedure Slide 11 RU 1 AID 0 RU 2 AID 0 RU 3 AID 0 Trigger Frame (TF-R) (random access) Chittabrata Ghosh, et al. (Intel) ACK UL MU PPDU (STA 1) UL MU PPDU (STA 2) RU 4 AID 0 RU 5 AID 0 STA 2 selects RU 1 STA 1 selects RU 3 September 2015

12 doc.: IEEE 802.11-15/1107r0 Submission Target Transmission Time for Scheduled TF-Rs We propose to define a TF-R Start Time, a target transmission time of a TF-R with RUs allocated for random access AP includes TF-R Start Time(s) of one or more scheduled TF-Rs in Beacon frame PS STAs receive Beacon frame upon wake up and decode the value in the TF-R Start Time PS STAs doze till the expiration of TF-R Start Time indicated in Beacon –Scheduling information in Beacon assists STAs to optimize power consumption with reduced time in Listen state –Value of TF-R Start Time assists PS STAs not to decode Trigger frame(s) that do not allow random access September 2015 Slide 12Chittabrata Ghosh, et al. (Intel)

13 doc.: IEEE 802.11-15/1107r0 Submission TF AP Beacon TF-R Start Time TF-R TF-R Start Time STA 1 (Power Save) STA 2 (Power Save) Random Sub-channel Selection UL Data 13 Doze time Slide 13 Doze time UL Data (no random access) (random access) Chittabrata Ghosh, et al. (Intel) September 2015 Illustration of Signaling Single Scheduled TF-R

14 doc.: IEEE 802.11-15/1107r0 Submission TF AP Beacon TF-R Start Time 1 Random Sub-channel Selection 14 Doze time Slide 17 Doze time UL Data (no random access) (random access) TF-R Doze time UL Data Random Sub-channel Selection TF-R Start Time 2 STA 1 STA 2 STA 3 September 2015 Chittabrata Ghosh, et al. (Intel) Illustration of Signaling Multiple Scheduled TF-Rs UL Data Random Sub-channel Selection

15 doc.: IEEE 802.11-15/1107r0 Submission Discussion about Scheduled TF-Rs The AP may transmit multiple scheduled TFs within a beacon interval Signaling every scheduled TF-R in a Beacon frame may result in significantly increased overhead We define a cascaded sequence of TF-Rs –Following random access using UL OFDMA RUs indicated in current TF-R, the AP transmits another TF-R –Transmission time of the cascaded TF-R is TBD We propose a signaling mechanism to indicate whether a scheduled TF-R is cascaded or non-cascaded Slide 15 September 2015 Chittabrata Ghosh, et al. (Intel)

16 doc.: IEEE 802.11-15/1107r0 Submission Signaling Cascaded TF-Rs using Frame Control Field in MAC Header Protocol Version TypeSub type To DSFrom DS More Fragm ents RetryPower Manage ment More Data Protected Frame Order Bits 2 2 4 1 1 1 1 1 1 1 1 Cascade Indication For example, we could define a field “Cascade Indication” replacing More Data subfield in Frame Control field of MAC header in TF-R The value in this field set to 1 indicates cascaded sequence of TF-Rs The value in tis field set to 0 indicates non-cascaded sequence of TF-Rs September 2015 Chittabrata Ghosh, et al. (Intel)Slide 15

17 doc.: IEEE 802.11-15/1107r0 Submission Illustration of Scheduled TF-Rs with Signaling for Cascaded TF-Rs TF AP Beacon TF-R Start Time TF-R TF-R Start Time STA 1 STA 2 Random Sub-channel Selection UL Data 17 Doze time Slide 16 Doze time UL Data (no random access) (random access) TF-R Cascade Ind = 1 Cascade Ind = 0 STA 3 Doze time UL Data Random Sub-channel Selection STA 4 Collision September 2015 Chittabrata Ghosh, et al. (Intel) MU- BA

18 doc.: IEEE 802.11-15/1107r0 Submission Summary In this presentation, we proposed a signaling mechanism for scheduled TF-Rs –A cascading sequence of scheduled TF-Rs have been discussed We have also proposed a signaling mechanism to indicate whether a scheduled TF-R is cascaded or not Slide 18Chittabrata Ghosh, et al. (Intel) September 2015

19 doc.: IEEE 802.11-15/1107r0 Submission References [1] IEEE 802.11-14/0165r1 “802.11 HEW SG Proposed PAR” [2] IEEE 802.11-15/0875r1 “Random Access with Trigger frames using OFDMA” [3] IEEE 802.11-15/0132r2 “Specification Framework for Tax” Slide 19Chittabrata Ghosh, et al. (Intel) September 2015

20 doc.: IEEE 802.11-15/1107r0 Submission Straw-poll 1 Do you agree to add to the spec framework? The spec shall indicate cascaded sequence of Trigger frames for random access by using a bit in the Trigger frame. Yes: No: Abstain Slide 20 September 2015 Chittabrata Ghosh, et al. (Intel)

21 doc.: IEEE 802.11-15/1107r0 Submission Straw-poll 2 Do you agree to add to the spec framework? The spec shall include a mechanism that allows the Beacon frame to indicate the target transmission time(s) of one or more Trigger frame(s) that allocates resources for random access. Yes: No: Abstain Slide 21 September 2015 Chittabrata Ghosh, et al. (Intel)

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