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Doc.: IEEE 802.11-15/0652r0 Submission May 2015 Masahito Mori, Sony CorporationSlide 1 Reference Simulation Model for Dynamic CCA / DSC Calibration Date:

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Presentation on theme: "Doc.: IEEE 802.11-15/0652r0 Submission May 2015 Masahito Mori, Sony CorporationSlide 1 Reference Simulation Model for Dynamic CCA / DSC Calibration Date:"— Presentation transcript:

1 doc.: IEEE 802.11-15/0652r0 Submission May 2015 Masahito Mori, Sony CorporationSlide 1 Reference Simulation Model for Dynamic CCA / DSC Calibration Date: 2015/05/12 Authors: NameAffiliationsAddressPhoneemail Masahito MoriSony Corp Masahito.Mori@jp.sony.com Yuichi Morioka Yuichi.Morioka@jp.sony.com Yusuke Tanaka YusukeC.Tanaka@jp.sony.com Takeshi Itagaki Takeshi.Itagaki@jp.sony.com Graham SmithSR Technologiesgsmith@srtrl.com Sayantan Choudhury Nokia Sayantan.Choudhury@nokia.com Tuomaala Esa esa.tuomaala@nokia.com Kneckt Jarkko jarkko.kneckt@nokia.com Chinghwa YuMediaTek Inc. No. 1, Dusing 1st Road, Hsinchu, 300 Taiwan +886-3-567-0766chinghwa.yu@mediatek.com Knut OdmanBroadcomkodman@broadcom.com

2 doc.: IEEE 802.11-15/0652r0 Submission May 2015 Masahito Mori, Sony CorporationSlide 2 Authors (continued): NameAffiliationsAddressPhoneemail Kentaro TaniguchiToshibakentaro.taniguchi@toshiba.co.jp David Hallsdavid.halls@toshiba-trel.com Guido HiertzEricssonguido.hiertz@ericsson.com Yasuhiko InoueNTT1-1 Hikari-no-oka, Yokosuka, Kanagawa 239- 0847 Japan +81 46 859 5097inoue.yasuhiko@lab.ntt.co.jp Shoko ShinoharaShinohara.shoko@lab.ntt.co.jp Koichi Ishihara ishihara.koichi@lab.ntt.co.jp Yasushi Takatori takatori.yasushi@lab.ntt.co.jp Yusuke Asai asai.yusuke@lab.ntt.co.jp John (Ju-Hyung) SonWILUS Institute john.son@wilusgroup.com Geonjung Kogreg.ko@wilusgroup.com Jinsam Kwakjinsam.kwak@wilusgroup.com Sean CoffeyRealtekcoffey@realtek.com

3 doc.: IEEE 802.11-15/0652r0 Submission Abstract Many simulation results of dynamic CCA / DSC have been presented at TGax However the simulation conditions were diverse and the results were inconsistent [1] In order to move forward, interested parties discussed and agreed on a set of common assumptions, to derive consistent simulation results as a reference The goal of the effort is to build a common ground to do an apples-to-apples comparison between proposals This simple scenario is presented in this contribution May 2015 Masahito Mori, Sony CorporationSlide 3

4 doc.: IEEE 802.11-15/0652r0 Submission Reference Simulation Model The document defines a simple scenario to have consistent reference simulation results –Deployment scenario (topology) –Traffic model / MCS selection –Operational parameters –Receiver state machine May 2015 Masahito Mori, Sony CorporationSlide 4

5 doc.: IEEE 802.11-15/0652r0 Submission Reference Deployment Scenario May 2015 Masahito Mori, Sony CorporationSlide 5 34m 3m AP1AP2 STA3 STA4 STA1 STA2

6 doc.: IEEE 802.11-15/0652r0 Submission Reference Traffic Model / MCS Selection May 2015 Masahito Mori, Sony CorporationSlide 6

7 doc.: IEEE 802.11-15/0652r0 Submission Reference Operational Parameters May 2015 Masahito Mori, Sony CorporationSlide 7

8 doc.: IEEE 802.11-15/0652r0 Submission Reference Operational Parameters (cont’d) May 2015 Masahito Mori, Sony CorporationSlide 8

9 doc.: IEEE 802.11-15/0652r0 Submission Receiver State Machine May 2015 Masahito Mori, Sony CorporationSlide 9 The reference model maintains Fig 18-20 PLCP state machine from 802.11-2012 (pre 802.11ah receiver state machine) Change CCA-SD threshold (-76/-66/-56 dBm) to create 3 throughput graphs

10 doc.: IEEE 802.11-15/0652r0 Submission Summary Reference scenario and conditions for dynamic CCA / DSC calibration were presented Interested parties are encouraged to share simulation results based on this reference model, to start an apples-to-apples comparison May 2015 Masahito Mori, Sony CorporationSlide 10

11 doc.: IEEE 802.11-15/0652r0 Submission References [1] 11-14/1580r0, “Perspectives on Spatial Reuse in 11ax” [2] 11-14/0854r0, “DSC and Legacy Coexistence” [3] 11-14/0571r8, “11ax Evaluation Methodology” [4] 11-14/1523r5, “Offline Discussion Minutes of SLS Calibration” [5] 11-15/0053r2, “Box5 Results of 11ac SS6” May 2015 Masahito Mori, Sony CorporationSlide 11

12 doc.: IEEE 802.11-15/0652r0 Submission Appendix May 2015 Masahito Mori, Sony CorporationSlide 12

13 doc.: IEEE 802.11-15/0652r0 Submission Simulation Conditions (Relation between preamble detection threshold and distance from OBSS) May 2015 Masahito Mori, Sony CorporationSlide 13 AP(TxPower 20dBm) STA (TxPower 15dBm) original CCA-SD level (-76dBm) Each AP will receive a signal at about -65dBm from the other AP 34m away In the worst case, each STA will receive a signal at -67dBm from a STA in the other network, 28m away Each STA will receive a signal at about -36dBm from its AP 3m away

14 doc.: IEEE 802.11-15/0652r0 Submission Simulation Conditions (Relation between preamble detection threshold and distance from OBSS) May 2015 Masahito Mori, Sony CorporationSlide 14 Each STA will receive a signal at about -36dBm from its AP 3m away AP(TxPower 20dBm) STA (TxPower 15dBm) original CCA-SD level (-76dBm) With a DSC margin of 20dB, each STA (on the perimeter of the circle) would be setting effective CCA at -56dBm, well below any signal from the other network 20dB margin Each AP will receive a signal at about -65dBm from the other AP 34m away In the worst case, each STA will receive a signal at -67dBm from a STA in the other network, 28m away CCA-SD level is raised

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