Simulation results for March 2015 Simulation results for Box 5 calibration Date: 2015-03-09 Authors: Name Affiliations Address Phone Email Suhwook Kim LG Electronics 19, Yangjea-daero 11gil, Seocho-gu, Seoul 137-130, Korea +82-2-6912-6589 suhwook.kim@lge.com Wookbong Lee wookbong.lee@lge.com Hyeyoung Choi hy0117.choi@lge.com Jeongki Kim jeongki.kim@lge.com Kiseon Ryu kiseon.ryu@lge.com HanGyu Cho hg.cho@lge.com Suhwook Kim, LG Electronics

Month Year doc.: IEEE 802.11-yy/xxxxr0 March 2015 Abstract This submission provides updated simulation results for Box-5 calibration and reviews our Box-5 calibration work It clarifies CCA threshold parameter and suggests additional performance metrics Suhwook Kim, LG Electronics John Doe, Some Company

Box-5 Calibration [1] Box 0, 1, and 2 calibration are almost done March 2015 Box-5 Calibration [1] Box 0, 1, and 2 calibration are almost done Box 3 calibration is now in progress Box 5 calibration was initially discussed in September meeting Box 5: Integrated system simulator calibration The objective is to align a combination of all PHY and MAC features Suhwook Kim, LG Electronics

Box-5 PHY Details [2] March 2015 PHY parameters BW All BSSs at 5GHz [80 MHz, no dynamic bandwidth] Channel model TGac D NLOS per link Shadow fading iid log-normal shadowing (5 dB standard deviation) per link Data Preamble Type [5GHz, 11ac], always decoded correctly after successful reception, duration is considered. STA TX Power 15 dBm per antenna  AP TX Power 20 dBm  per antenna AP number of TX/RX antennas 1/1 STA number of TX /RX antennas AP antenna gain 0 dBi STA antenna gain -2 dBi Noise Figure 7dB CCA threshold -70dBm (measured across the entire bandwidth after large-scale fading) → -56 dBm Rx sensitivity -82dBm (a packet with lower rx power is dropped) → -76 dBm Link Adaption Fixed MCS =7 (292.5 Mbps) Channel estimation ideal PHY abstraction RBIR, BCC [1, 5] Channel correlation Independent or time-correlated channel per packet Suhwook Kim, LG Electronics

Box-5 MAC Details [2] March 2015 100 drops per simulation MAC parameters Access protocol [EDCA, AC_BE with default parameters] [CWmin = 15, CWmax = 1023, AIFSn=3 ] Queue length A single queue for each traffic link is set inside AP/STA sized of 2000 packets Traffic type UDP CBR with rate 10^8bps (may not enough to model full buffer) MPDU size 1540 Bytes (1472 Data + 28 IP header + 40 MAC header) Aggregation [A-MPDU / max aggregation size / BA window size, No A-MSDU, with immediate BA], Max aggregation: 64 MPDUs with 4-byte MPDU delimiter Max number of retries 10 Beacon Disabled RTS/CTS OFF Traffic direction UL Only, DL only Output metric -CDF or Histogram of per non-AP STA throughput (received bits/overall simulation time) -PER of all AP/STA (1 - # of success subframes / # of transmitted subframes) -Collision probability of all AP/STA ( 1 – # of received ACK frames / # of transmitted data frame) 100 drops per simulation 1 drop = 5 seconds (+ 1 second for initial running) Suhwook Kim, LG Electronics

11ac Scenario 6 – OBSS Enterprise [2][3] March 2015 11ac Scenario 6 – OBSS Enterprise [2][3] Fixed Location and Association STA1 (5,-9.5) STA2 (3.5,7.5) STA4 (-4.5,0.5) STA5 (-1.5,6) STA7 (-9,-5) STA8 (-8.5,8.5) STA10 (-3,0.5) STA11 (-0.5,8) STA13 (-4,-4) STA14 (7.5,-1) STA16 (8,-6) STA17 (0,-7.5) STA19 (-2.5,-4.5) STA20 (0.5,-2) STA22 (0,-4.5) STA23 (-1.5,7) STA25 (3.5,-5) STA26 (9,9.5) STA28 (-8,-5.5) STA29 (1.5,3.5) AP A (0,0) AP B (40,20) AP C (-40,-20) STA3 (7.5+xb, ‑9.5+yb) STA9 (7+xb, -7.5+yb) STA15 (3+xb, -0.5+yb) STA21 (-6.5+xb, -3+yb) STA27 (‑6+xb, 2.5+yb) STA6 (-5.5+xc,4.5+yc) STA12 (7+xc,7+yc) STA18 (10+xc,0.5+yc) STA24 (3+xc,2.5+yc) STA30 (9.5+xc,3.5+yc) Suhwook Kim, LG Electronics

Traffic Flow Model [2][3] March 2015 Traffic Flow Model [2][3] DL/UL traffic assigned for each STA STA DL UL STA1 y STA23 n STA2 STA25 STA4 STA26 STA5 STA28 STA7 STA29 STA8 STA3 STA10 STA9 STA11 STA15 STA13 STA21 STA14 STA27 STA16 STA6 STA17 STA12 STA19 STA18 STA20 STA24 STA22 STA30 Suhwook Kim, LG Electronics

History on Box-5 Calibration March 2015 History on Box-5 Calibration We have discussed Box-5 calibration from September meeting Many issues have been agreed and addressed in DCN 1523r5 However, we still found big performance difference among members in January meeting We found that CCA threshold in PHY parameter table wasn’t clear and then CCA thresholds of each member could be different Performance metric (throughput) is not enough to calibrate among members We have to clarify CCA threshold and define additional performance metric to move forward Suhwook Kim, LG Electronics

March 2015 Proposed parameter We proposed CCA level for following current IEEE 802.11 spec. CCA-SD: -76 dBm for 80 MHz (-82 dBm for 20 MHz) CCA-ED: -56 dBm for 80 MHz (-62 dBm for 20 MHz) RX sensitivity: -76 dBm for 80 MHz Suhwook Kim, LG Electronics

Proposing metrics PER of all AP/STA March 2015 Proposing metrics PER of all AP/STA Definition 1 – number of success subframes / number of transmitted subframes It’s useful to analyze detail operation of each channel Even though two STAs have same throughput, they may have very different PER Collision probability of all AP/STA 1 – number of received ACK frames / number of transmitted data frame That equation includes three probabilities Preamble is failed by channel error → relatively low Preamble is failed by collision → major part Preamble is success but all subframes are failed → very low It’s useful to analyze collision event Suhwook Kim, LG Electronics

One BSS Test Result BSS B (STAs 3, 9, 15, 21, 27) March 2015 One BSS Test Result BSS B (STAs 3, 9, 15, 21, 27) UL only & DL only, UDP CBR with rate 10^8bps Total Tput UL: 97.26 Mbps DL: 256.03 Mbps Suhwook Kim, LG Electronics

Collision probability March 2015 One BSS Test Result PER & Collision probability DL only UL only PER [%] Collision probability Channel access rate* [access/sec] STA3 0.61 0.00 342.0 86.42 68.54 534.9 STA9 0.16 0.03 339.7 81.45 62.85 487.4 STA15 339.8 58.61 35.84 654.5 STA21 0.02 340.2 80.53 57.37 527.8 STA27 339.6 80.82 56.69 577.9 * Channel access rate = # of transmission / simulation time Suhwook Kim, LG Electronics

Three BSSs Test DL only March 2015 BSS B Total Tput: 171.74 Mbps BSS C BSS A Total Tput: 25.05 Mbps Suhwook Kim, LG Electronics

Three BSSs Test UL only March 2015 BSS C Total Tput: 99.11 Mbps BSS B BSS A Total Tput: 27.78 Mbps Suhwook Kim, LG Electronics

Three BSSs Test Result PER & Collision probability (DL only - BSS A) March 2015 Three BSSs Test Result PER & Collision probability (DL only - BSS A) PER [%] Collision probability Channel access rate [access/sec] STA1 66.29 7.61 27.2 STA2 57.79 5.76 22.3 STA4 32.82 2.90 14.6 STA5 39.77 4.77 19.0 STA7 58.04 8.70 22.0 STA8 65.22 7.37 26.8 STA10 18.54 2.61 11.7 STA11 58.39 6.71 23.4 STA13 33.55 6.69 14.3 PER [%] Collision probability Channel access rate [access/sec] STA14 57.24 6.10 24.3 STA16 63.24 7.12 25.4 STA17 41.53 7.24 15.8 STA19 23.09 2.98 12.1 STA20 4.00 0.69 9.8 STA25 37.47 4.96 15.0 STA26 69.54 17.68 33.0 STA28 67.53 5.94 29.7 STA29 22.29 4.73 12.2 Suhwook Kim, LG Electronics

Collision probability March 2015 Three BSSs Test Result PER & Collision probability (DL only - BSS B, BSS C) PER [%] Collision probability Channel access rate [access/sec] BSS B STA3 31.50 1.59 413.3 STA9 24.33 0.60 376.5 STA15 1.63 0.17 291.5 STA27 17.66 0.82 346.6 BSS C STA6 17.13 0.68 293.6 STA12 39.06 1.65 395.9 STA18 21.98 1.40 312.4 STA30 37.37 1.78 387.8 Suhwook Kim, LG Electronics

Three BSSs Test Result PER & Collision probability (UL only - BSS A) March 2015 Three BSSs Test Result PER & Collision probability (UL only - BSS A) PER [%] Collision probability Channel access rate [access/sec] STA1 99.21 90.24 370.9 STA2 95.72 73.79 251.3 STA4 86.14 53.15 271.3 STA5 92.95 63.12 268.9 STA7 98.41 85.74 336.6 STA8 99.66 92.66 329.4 PER [%] Collision probability Channel access rate [access/sec] STA22 89.04 55.94 306.9 STA23 95.72 72.65 249.2 STA25 95.81 72.07 305.1 STA26 99.65 93.24 366.7 STA28 98.34 85.16 322.7 STA29 86.41 49.85 317.0 Suhwook Kim, LG Electronics

Collision probability March 2015 Three BSSs Test Result PER & Collision probability (UL only - BSS B, BSS C) PER [%] Collision probability Channel access rate [access/sec] BSS B STA3 94.15 77.42 751.6 STA21 74.32 34.81 859.4 STA27 74.30 33.99 894.1 BSS C STA6 79.97 47.10 756.6 STA24 54.37 19.78 1134.1 STA30 84.67 58.08 590.2 Suhwook Kim, LG Electronics

March 2015 Conclusion In this submission, we provided updated simulation results for Box 5 calibration We clarified CCA threshold and suggested additional performance metrics for calibration procedure Suhwook Kim, LG Electronics

Reference [1] 11-14/0571r5 Evaluation Methodology March 2015 Reference [1] 11-14/0571r5 Evaluation Methodology [2] 11-14/1177r2 Box5 Calibration Discussion [3] 11-09/0451r16 TGac Functional Requirements and Evaluation Methodology [4] 11-14/1523r5 Offline Discussion Minutes of SLS Calibration Suhwook Kim, LG Electronics

March 2015 Backup slides Suhwook Kim, LG Electronics

for previous CCA threshold March 2015 Simulation results for previous CCA threshold (CCA-SD: -82 dBm for 80 MHz, CCA-ED: -70 dBm for 80 MHz) Suhwook Kim, LG Electronics

One BSS Test Result BSS B (STAs 3, 9, 15, 21, 27) March 2015 One BSS Test Result BSS B (STAs 3, 9, 15, 21, 27) UL only & DL only, UDP CBR with rate 10^8bps Total Tput UL: 206.88 Mbps DL: 256.04 Mbps Suhwook Kim, LG Electronics

Comparison DL only March 2015 -76 dBm / -56 dBm -82 dBm / -70 dBm Tput [Mbps] PER [%] Collision prob. Channel access rate [access/sec] STA3 51.23 0.61 0.00 342.0 51.26 0.60 0.23 339.6 STA9 51.12 0.16 0.03 339.7 51.10 0.15 340.3 STA15 51.22 339.8 51.21 0.01 STA21 51.27 0.02 340.2 51.29 339.5 STA27 51.19 51.18 342.1 BSS B 256.03 1701.3 256.04 Suhwook Kim, LG Electronics

Comparison UL only March 2015 -76 dBm / -56 dBm -82 dBm / -70 dBm Tput [Mbps] PER [%] Collision prob. Channel access rate [access/sec] STA3 10.95 86.42 68.54 534.9 37.59 39.18 35.35 400.3 STA9 13.62 81.45 62.85 487.4 44.76 32.46 30.94 407.4 STA15 40.53 58.61 35.84 654.5 46.04 29.74 29.27 434.8 STA21 15.49 80.53 57.37 527.8 40.83 33.54 32.44 439.7 STA27 16.67 80.82 56.69 577.9 37.66 37.63 34.23 410.0 BSS B 97.26 76.77 55.26 2782.5 206.88 34.39 32.36 2092.2 Suhwook Kim, LG Electronics

Collision probability March 2015 One BSS Test Result PER & Collision probability DL only UL only PER [%] Collision probability Channel access rate [access/sec] STA3 0.60 0.23 339.6 39.18 35.35 400.3 STA9 0.15 0.00 340.3 32.46 30.94 407.4 STA15 0.01 339.8 29.74 29.27 434.8 STA21 339.5 33.54 32.44 439.7 STA27 342.1 37.63 34.23 410.0 Suhwook Kim, LG Electronics

Three BSSs Test DL only March 2015 BSS B Total Tput: 131.59 Mbps BSS C BSS A Total Tput: 57.30 Mbps Suhwook Kim, LG Electronics

Three BSSs Test UL only March 2015 BSS C Total Tput: 138.58 Mbps BSS B BSS A Total Tput: 93.49 Mbps Suhwook Kim, LG Electronics

Comparison DL only March 2015 -76 dBm / -56 dBm -82 dBm / -70 dBm Tput [Mbps] PER [%] Collision prob. Channel access rate* [access/sec] BSS A 25.05 53.66 7.18 358.7 93.49 18.59 6.51 467.0 BSS B 171.74 20.20 0.86 1427.9 131.59 14.44 1.88 1020.4 BSS C 145.25 30.66 1.42 1389.8 120.43 20.63 3.04 1006.6 Suhwook Kim, LG Electronics

Comparison UL only March 2015 -76 dBm / -56 dBm -82 dBm / -70 dBm Tput [Mbps] PER [%] Collision prob. Channel access rate* [access/sec] BSS A 27.78 95.02 75.03 3696.5 57.30 70.49 39.25 2102.8 BSS B 72.12 80.38 47.23 2505.0 115.29 60.37 23.35 1968.0 BSS C 99.11 70.83 37.19 2480.9 138.58 51.77 21.14 1969.3 Suhwook Kim, LG Electronics

Three BSSs Test Result PER & Collision probability (DL only - BSS A) March 2015 Three BSSs Test Result PER & Collision probability (DL only - BSS A) PER [%] Collision probability Channel access rate [access/sec] STA1 67.45 8.81 31.3 STA2 73.92 5.72 29.5 STA4 92.98 3.32 22.8 STA5 89.86 4.20 23.6 STA7 80.39 10.43 26.3 STA8 74.89 11.04 28.1 STA10 94.48 1.43 22.3 STA11 76.93 7.94 27.4 STA13 89.17 4.63 23.7 PER [%] Collision probability Channel access rate [access/sec] STA14 76.36 6.31 28.4 STA16 74.34 6.86 STA17 80.84 5.97 26.3 STA19 93.46 3.27 22.7 STA20 97.11 0.32 21.9 STA25 88.53 5.33 23.8 STA26 66.43 13.65 31.7 STA28 78.22 9.75 27.3 STA29 97.15 1.83 21.8 Suhwook Kim, LG Electronics

Collision probability March 2015 Three BSSs Test Result PER & Collision probability (DL only - BSS B, BSS C) PER [%] Collision probability Channel access rate [access/sec] BSS B STA3 81.17 3.08 268.2 STA9 79.03 2.06 276.9 STA15 97.81 0.11 224.2 STA27 86.92 1.99 251.1 BSS C STA6 86.63 1.74 230.8 STA12 73.69 3.34 270.8 STA18 86.19 3.06 233.0 STA30 3.82 272.1 Suhwook Kim, LG Electronics

Three BSSs Test Result PER & Collision probability (UL only - BSS A) March 2015 Three BSSs Test Result PER & Collision probability (UL only - BSS A) PER [%] Collision probability Channel access rate [access/sec] STA1 15.11 51.04 127.9 STA2 25.10 40.67 162.6 STA4 37.07 35.47 222.6 STA5 32.34 35.29 232.9 STA7 20.71 43.86 116.0 STA8 7.43 55.47 97.4 PER [%] Collision probability Channel access rate [access/sec] STA22 38.78 34.12 262.7 STA23 26.91 37.65 222.6 STA25 30.39 36.20 224.7 STA26 10.34 56.57 70.4 STA28 16.77 48.61 99.9 STA29 44.26 32.44 263.1 Suhwook Kim, LG Electronics

Collision probability March 2015 Three BSSs Test Result PER & Collision probability (UL only - BSS B, BSS C) PER [%] Collision probability Channel access rate [access/sec] BSS B STA3 25.91 28.53 617.7 STA21 45.80 20.93 637.1 STA27 46.19 21.01 713.2 BSS C STA6 41.62 21.46 732.9 STA24 63.49 17.70 763.7 STA30 35.33 26.27 472.7 Suhwook Kim, LG Electronics

Simulation results for BSS A only March 2015 Simulation results for BSS A only (CCA-SD: -76 dBm for 80 MHz, CCA-ED: -56 dBm for 80 MHz) Suhwook Kim, LG Electronics

March 2015 One BSS Test BSS A – DL only (18 STAs 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 25, 26, 28, 29) Total Tput DL: 252.71 Mbps Suhwook Kim, LG Electronics

One BSS Test PER & Collision probability (DL only - BSS A) March 2015 [%] Collision probability Channel access rate [access/sec] STA1 2.51 0.50 95.6 STA2 0.06 0.04 93.2 STA4 0.03 STA5 0.05 STA7 0.18 0.02 92.9 STA8 5.77 2.76 99.1 STA10 92.7 STA11 0.32 0.01 92.8 STA13 0.00 PER [%] Collision probability Channel access rate [access/sec] STA14 0.04 0.01 93.2 STA16 0.12 0.00 93.4 STA17 0.09 0.06 93.6 STA19 0.02 93.5 STA20 STA25 0.17 94.3 STA26 8.99 5.62 102.7 STA28 0.65 94.1 STA29 92.8 Suhwook Kim, LG Electronics

March 2015 One BSS Test BSS A – UL only (12 STAs 1, 2, 4, 5, 7, 8, 22, 23, 25, 26, 28, 29) Total Tput UL: 36.63 Mbps Suhwook Kim, LG Electronics

One BSS Test PER & Collision probability (UL only - BSS A) March 2015 [%] Collision probability Channel access rate [access/sec] STA1 97.61 84.15 415.5 STA2 92.59 68.50 289.6 STA4 84.43 57.15 243.0 STA5 90.65 65.58 266.9 STA7 96.41 79.56 373.2 STA8 97.55 84.60 371.3 PER [%] Collision probability Channel access rate [access/sec] STA22 88.64 61.00 281.5 STA23 92.63 70.56 270.3 STA25 94.40 73.21 296.0 STA26 97.84 85.42 414.3 STA28 96.03 77.59 363.2 STA29 85.92 57.52 243.9 Suhwook Kim, LG Electronics