IEEE Calibration Results Presentation May 2015
Presentation by Chinghwa Yu and team from MediaTek Inc. on Box 5 calibration results and performance differences in IEEE meetings. Focus on aligning single BSS UL test cases. Details include simulation data, PHY and MAC parameters, and test case configurations.
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May 2015 doc.: IEEE 11-15/613r0 Box 5 Calibration Result Date: 2015-05-08 Authors: Name Affiliations Address Phone email Chinghwa Yu chinghwa.yu@mediatek.com No. 1, Dusing 1st Road, Hsinchu, 300 Taiwan MediaTek Inc. Frank Hsu +886-3-567-0766 frank.hsu@mediatek.com James Yee james.yee@mediatek.com Russell Huang russell.huang@mediatek.com 2860 Junction Ave., San Jose, CA 95134 USA MediaTek USA +1-408-526-1899 ChaoChun Wang chaochun.wang@mediatek.com Submission Slide 1 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 Abstract This presentation describes MediaTek s Box 5 calibration results. Applying 1 BSS UL test case. Submission Slide 2 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 Background Performance differences are found and results are not aligned since members providing results from Sep. 2014. Box 5 simulation members agreed to focus on aligning single BSS UL test case in the Mar. 2015 IEEE meeting. Submission Slide 3 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 Single BSS Calibration Case No Shadowing: Require one simulation drop. Fixed MCS 5: To avoid path-loss dependent transmission failure due to using MCS 7. 5 Combinations: STA 3, STA9. STA 3, STA 27. STA 3, STA 15. STA 3, STA 9, STA 27. STA 3, STA 9, STA 15. BSS B, UL traffic. AP B STA3 STA9 STA15 STA21 STA27 (40,20) (7.5+xb, -9.5+yb) (7+xb, -7.5+yb) (3+xb, -0.5+yb) (-6.5+xb, -3+yb) (-6+xb, 2.5+yb) Submission Slide 4 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 PHY Parameters PHY parameters All BSSs at 5GHz [80 MHz, no dynamic bandwidth] TGac D NLOS per link iid log-normal shadowing (5 dB standard deviation) per link [5GHz, 11ac], always decoded correctly after successful reception, duration is BW Channel model Shadow fading Data Preamble Type considered. 15 dBm per antenna 20 dBm per antenna 1/1 1/1 0 dBi -2 dBi 7dB -56 dBm (measured across the entire bandwidth after large-scale fading) -76 dBm Fixed MCS =5 (234.0 Mbps) ideal RBIR, BCC [1, 5] Independent or time-correlated channel per packet STA TX Power AP TX Power AP number of TX/RX antennas STA number of TX /RX antennas AP antenna gain STA antenna gain Noise Figure CCA threshold Rx sensitivity Link Adaption Channel estimation PHY abstraction Channel correlation Submission Slide 5 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 MAC Parameters MAC parameters [EDCA, AC_BE with default parameters] [CWmin = 15, CWmax = 1023, Access protocol AIFSn=3 ] A single queue for each traffic link is set inside AP/STA sized of 2000 packets UDP CBR with rate 10^8bps (may not enough to model full buffer) 1538 Bytes (1472 Data + 28 IP header + 8 bytes LLC + 30 MAC header) [A-MPDU / max aggregation size / BA window size, No A-MSDU, with Queue length Traffic type MPDU size Aggregation immediate BA], Max aggregation: 64 MPDUs with 4-byte MPDU delimiter 10 Disabled OFF UL Only Max number of retries Beacon RTS/CTS Traffic direction -CDF or Histogram of per non-AP STA throughput (received bits/overall Output metric simulation time) -PER of all AP/STA (1 - # of success subframes / # of transmitted subframes) Submission Slide 6 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 Simulation Results Test Case Throughput [Mbps] STA 3: 98.16 STA 9: 100.92 STA 3: 93.46 STA 27: 97.77 STA 3: 98.48 STA 15: 101.22 STA 3: 83.67 STA 9: 88.47 STA 27: 21.23 STA 3: 62.68 STA 9: 60.10 STA 15: 72.15 1 (2 STAs) 2 (2 STAs) 3 (2 STAs) 4 (3 STAs) 5 (3 STAs) Submission Slide 7 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 Conclusions Provide MTK s Box 5 calibration results on single BSS test case. Submission Slide 8 Chinghwa Yu et al, MediaTek Inc.
May 2015 doc.: IEEE 11-15/613r0 References 1. R. Porat et al, Evaluation Methodology , IEEE 11- 14/571r6. 2. S. Merlin et al, Simulation Scenarios , IEEE 11- 14/980r10. 3. P. Loc et al, TGac Functional Requirements and Evaluation Methodology , IEEE 11-09/0451r16. Submission Slide 9 Chinghwa Yu et al, MediaTek Inc.
