Box 5 Calibration Result
This presentation by MediaTek Inc. discusses the calibration results of Box 5, focusing on aligning single BSS UL test cases to address performance differences. The slides cover background information, a specific calibration case, PHY parameters, and MAC parameters related to the calibration process.
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July 2015 doc.: IEEE 11-15/0885r0 Box 5 Calibration Result Date: 2015-07-12 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.
July 2015 doc.: IEEE 11-15/0885r0 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.
July 2015 doc.: IEEE 11-15/0885r0 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.
July 2015 doc.: IEEE 11-15/0885r0 Single BSS Calibration Case No Shadowing: Fixed MCS 5: To avoid path-loss dependent transmission failure due to using MCS 7. 5 Combinations: All DL. Single STA. STA 3, STA9. STA 3, STA15. STA 3, STA 27. STA 3, STA 9, STA 15. STA 3, STA 9, STA 27. 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.
July 2015 doc.: IEEE 11-15/0885r0 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.
July 2015 doc.: IEEE 11-15/0885r0 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: 32 MPDUs with 4-byte MPDU delimiter 10 Disabled OFF UL Only Max number of retries Beacon RTS/CTS Traffic direction Submission Slide 6 Chinghwa Yu et al, MediaTek Inc.
July 2015 doc.: IEEE 11-15/0885r0 Simulation Results Case STA Throughput (Mbps) 3 9 40.542 40.427 40.056 39.468 38.914 199.407 99.983 99.923 100.001 99.972 99.922 99.815 99.826 199.641 99.906 99.797 199.703 99.841 99.737 199.578 70.928 63.202 59.371 193.501 63.196 68.249 62.656 194.101 15 21 27 sum 3 9 15 21 27 3 9 sum 3 15 sum 3 27 sum 3 9 15 sum 3 9 27 sum all DL UL 1 STA UL 3+9 UL 3+15 UL 3+27 UL 3+9+15 Ul 3+9+27 Submission Slide 7 Chinghwa Yu et al, MediaTek Inc.
July 2015 doc.: IEEE 11-15/0885r0 Conclusions Update MTK s Box 5 calibration results on single BSS test case. Submission Slide 8 Chinghwa Yu et al, MediaTek Inc.
July 2015 doc.: IEEE 11-15/0885r0 References 1. R. Porat et al, Evaluation Methodology , IEEE 11- 14/571r9. 2. S. Merlin et al, Simulation Scenarios , IEEE 11- 14/980r12. 3. P. Loc et al, TGac Functional Requirements and Evaluation Methodology , IEEE 11-09/0451r16. Submission Slide 9 Chinghwa Yu et al, MediaTek Inc.
