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Submission doc.: IEEE 802.11-12/0867r0 July 2012 Slide 1 Date: 2012-07-16 Authors: Non-TIM Allocation Hyoungjin Kwon, ETRI NameAffiliationsAddressPhoneEmail.

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Presentation on theme: "Submission doc.: IEEE 802.11-12/0867r0 July 2012 Slide 1 Date: 2012-07-16 Authors: Non-TIM Allocation Hyoungjin Kwon, ETRI NameAffiliationsAddressPhoneEmail."— Presentation transcript:

1 Submission doc.: IEEE 802.11-12/0867r0 July 2012 Slide 1 Date: 2012-07-16 Authors: Non-TIM Allocation Hyoungjin Kwon, ETRI NameAffiliationsAddressPhoneEmail Hyoungjin KwonETRI 138 Gajeongno, Yuseong-gu, Dajeon, Korea +82 42 860 5635 kwonjin@etri.re.kr Jae Seung LeeETRI jasonlee@etri.re.kr Minho CheongETRI minho@etri.re.kr Heejung YuETRI heejung@etri.re.kr Jaewoo ParkETRI parkjw@etri.re.kr Sok-kyu LeeETRI Sk-lee@etri.re.kr Eric WongBroadcom 190 Mathilda Place, Sunnyvale, CA +1 408 922 6672 ewong@broadcom.com Matthew FischerBroadcom mfischer@broadcom.com Minyoung ParkIntel Hillsboro, OR +1 503 712 4705 minyoung.park@intel.com Tom TetzlaffIntel thomas.a.tetzlaff@intel.com Emily QiIntel emily.h.qi@intel.com Thomas KenneyIntel Yongho SeokLG Electronics LG R&D Complex Anyang-Shi, Kyungki- Do, Korea +82-31-450-1947 yongho.seok@lge.com Jinsoo ChoiLG Electronics Jeongki KimLG Electronics Jin Sam KwakLG Electronics

2 Submission doc.: IEEE 802.11-12/0867r0 Authors: Slide 2 Hyoungjin Kwon, ETRI July 2012 NameAffiliationsAddressPhoneEmail Huai-Rong Shao Samsung Electronics hrshao@samsung.com Chiu NgoSamsung Electronics Chiu.ngo@samsung.com Yong LiuMarvell yongliu@marvell.com Hongyuan ZhangMarvell Hongyuan@marvell.com Sudhir SrinivasaMarvell sudhirs@marvell.com Simone MerlinQualcomm 5775 Morehouse Dr, San Diego, CA +1 858 845 1243 smerlin@qualcomm.com Santosh AbrahamQualcomm Menzo WentinkQualcomm Alfred AsterjadhiQualcomm Amin JafarianQualcomm Hemanth SampathQualcomm VK JonesQualcomm Chittabrata GhoshNokia Berkeley, CA +1 650 200 7566 chittabrata.ghosh@nokia.com Klaus DopplerNokia Taejoon KimNokia Sayantan ChoudhuryNokia Esa TuomaalaNokia Osama Aboul-MagdHuawei Osama.AboulMagd@huawei.com George CalcevHuawei Rolling Meadows,IL George.Calcev@huawei.com Young Hoon KwonHuawei Younghoon.kwon@huawei.com Betty ZhaoHuawei Betty.Zhao@huawei.com David YangxunHuawei David.Yangxun@huawei.com Bin ZhenHuawei ZhenBin@huawei.com Sun, Bo ZTE sun.bo1@zte.com.cn Lv, KaiyingZTE lv.kaiying@zte.com.cn

3 Submission doc.: IEEE 802.11-12/0867r0 Authors: NameAffiliationsAddressPhoneEmail Ken MoriPanasonic Mori.ken1@jp.panasonic.com Rojan ChitrakarPanasonic Rojan.Chitrakar@sg.panasonic.c om Haiguang WangI2R 1 Fusionopolis Way, #21-01 Connexis Tower, Singapore 138632 +65-6408 2000 hwang@i2r.a-star.edu.sg Shoukang ZhengI2R skzheng@i2r.a-star.edu.sg Yeow Wai LeongI2R wlyeow@i2r.a-star.edu.sg Zander LeiI2R leizd@i2r.a-star.edu.sg Jaya ShankarI2R jshankar@i2r.a-star.edu.sg Anh Tuan HoangI2R athoang@i2r.a-star.edu.sg Joseph Teo Chee MingI2R cmteo@i2r.a-star.edu.sg ChaoChun WangMediaTek chaochun.wang@mediatek.com James WangMediaTek james.wang@mediatek.com Jianhan LiuMediaTek jianhan.liu@mediatek.com Vish PonnampalamMediaTek vish.ponnamplam@mediatek.co m James YeeMediaTek james.yee@mediatek.com Thomas PareMediaTek thomas.pare@mediatek.com Kiran UlnMediaTek kiran.uln@mediatek.com Slide 3 July 2012 Hyoungjin Kwon, ETRI

4 Submission doc.: IEEE 802.11-12/0867r0 Introduction STAs covered by the AID segment are allowed to access channel within Restricted Access Window (RAW) and RAW Parameter Set (RPS) information element can be included in beacon frame for RAW [1,2]. Mechanism to set wake times and intervals for long sleeping low power devices has been proposed [3]. This Target Wake Time (TWT) mechanism is useful for non-TIM STAs which choose not to have a TIM entry for the DL traffic signalling. Is there a way to restrict access to assigned STAs only during Target Wake Times (TWTs)? AP can protect TWTs by Restricted Access Window (RAW) information included in beacon. Slide 4

5 Submission doc.: IEEE 802.11-12/0867r0 Further Power Save of non-TIM STA TWT concept [3] is fitted well for non-TIM STAs because it does not require beacon reception. Note that non-TIM STAs may be included in the broad range of long sleeping low power devices (= Z-class STA). But, assume that only non-TIM STAs are allowed to support TWT functionality. AP can group non-TIM STAs supporting TWT in the same group. Then, if assigned TWTs are in the current beacon interval, AP can protect TWTs by RPS IE [2] included in beacon from the channel access of other groups of STAs listening the beacon. This minimizes contention between non-TIM STAs and other TIM STAs. Slide 5 TWTn TWT1 Beacon Interval Restricted Access Window (RAW) TWT2 RAW

6 Submission doc.: IEEE 802.11-12/0867r0 RAW Protection for non-TIM STA : Overlapped Case Because AP performs TWT assignment in advance of normal UL/DL assignment for TIM STAs through beacon, AP should defer normal assignment until the end of the interval of last TWT. For example, if TWT is overlapped to TIM window for PS-Poll, TIM window starts after the interval of last TWT ends. However, in some cases, the cases that whole TWT is nested in the other RAW can not be inevitable. In the figure below, to protect the RAW1 for non-TIM from group of STAs which are allowed to access in the RAW2, RAW1 is not allowed to access for any TIM STA. Slide 6 TWT1 Beacon Interval RAW1 for non-TIM STA TWT2 RAW RAW2 for one group of TIM STA Slot duration

7 Submission doc.: IEEE 802.11-12/0867r0 Slide 7 We proposed protection method of TWT for non-TIM STA. For indicating the TWT to TIM STA listening beacon, RAW for non-TIM STA is defined. TIM STA is not allowed to access RAW for non-TIM STA. Useful for power save of non-TIM STA Summary ET RI

8 Submission doc.: IEEE 802.11-12/0867r0 Do you support to include, in TGah Spec Framework document, the concept of the following? AP may indicate to TIM STAs RAW information during which no TIM STA is allowed to contend Yes: No: Abstain: Straw Poll Slide 8ET RI

9 Submission doc.: IEEE 802.11-12/0867r0 References [1] “Uplink Channel Access General Procedure,” IEEE 802.11-12/0831r0 [2] “Restricted Access Window Signaling for Uplink Channel Access,” IEEE 802.11-12/0843r0 [3] “Target Wake Time,” IEEE 802.11-12/0823r0 Inte l Cor p. Slide 9

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