Box 5 Calibration Results November 2015 doc.: IEEE 802.11-16/0629r0 May 2016 Box 5 Calibration Results Date: 2016-05-14 Authors: Name Affiliation Address Phone email Marik Hsiao Mediatek 2840 Junction Ave San Jose, CA 95131, USA marik.hsiao@mediatek.com Andrew Tsai andrew.tsai@mediatek.com Wilson Tsao wilson.tsao@mediatek.com Jack Lee jack.lee@mediatek.com Chung-Ta Ku chung-ta.ku@mediatek.com Paul Cheng paul.cheng@mediatek.com Russell Huang Russell.huang@mediatek.com Marik Hsiao, MediaTek Inc. Narendar Madhavan, Toshiba

Introduction Calibration effort in IEEE 802 TGax is guided by [2]. May 2016 Introduction Calibration effort in IEEE 802 TGax is guided by [2]. Box 5 calibration is now following the decisions in [1], [3], [4]. A few companies have provided calibration results, in [5], [6]. In this presentation, the following simulation results of Box 5 calibration from a different simulation system, OMNet++, are presented. 1 BSS DL: 1 case UL: 9 cases 2 BSS UL: 1 case Mix DL&UL: 2 cases 3 BSS Mix DL&UL: 1 cases Marik Hsiao, MediaTek Inc.

Box 5 Calibration Configuration – PHY [1] May 2016 Box 5 Calibration Configuration – PHY [1] PHY parameters BW All BSSs at 5GHz [80 MHz, no dynamic bandwidth] Primary channel Aligned primary 20MHz channel for each co-80MHz-channel BSS; The detection of preamble and BA should only focus on primary 20MHz Channel model TGac D NLOS per link Shadow fading iid log-normal shadowing (0 dB standard deviation) per link Preamble type Control: legacy 20us; Data: 11ac (20us+20us for 1antenna case) Legacy control frame rate Basic 6Mbps rate for RTS/CTS/ACK/BA (MCS0) [1] AP/STA TX Power 20/15 dBm per antenna  Power Spectral density Scaled to 80 MHz number of antennas at AP /STA 1/1 AP /STA antenna gain 0/-2 dBi Noise Figure 7dB CCA-ED threshold -56 dBm (measured across the entire bandwidth after large-scale fading) Rx sensitivity/CCA-SD -76 dBm (a packet with lower rx power is dropped) Link Adaption Fixed MCS =5 for 11ac SS6 and TBD for 11ax SS1-4 Channel estimation Ideal unless otherwise specified PHY abstraction RBIR, BCC (see appendix 1&3 in [2]) Symbol length 4us with 800ns GI per OFDM symbol Marik Hsiao, MediaTek Inc.

Box 5 Calibration Configuration – MAC [1] May 2016 Box 5 Calibration Configuration – MAC [1] 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 Random start time during a 10ms interval MPDU size 1544 Bytes (1472 Data + 28 IP header + 8 LLC header + 30 MAC header + 4 delimiter + 2 padding) Aggregation [A-MPDU / max aggregation size / BA window size, No A-MSDU, immediate BA without explicit request], Max aggregation: 32 MPDUs Max number of retries 10 Beacon Disabled unless otherwise specified RTS/CTS OFF unless otherwise specified Running time >= 10s per drop 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) Marik Hsiao, MediaTek Inc.

Fixed Location and Association May 2016 Box 5 Calibration Topology [1] 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) Marik Hsiao, MediaTek Inc.

1 BSS (B) 3 STAs (STA3, 9, 15) UL Analysis May 2016 1 BSS (B) 3 STAs (STA3, 9, 15) UL Analysis x y distance to AP pathloss rcvdPower AP 40 20 STA3 7.5+40 -9.5+20 12.10 73.84278 -60.59853763 STA9 7+40 -7.5+20 10.26 71.32951 -58.08526602 STA15 3+40 -0.5+20 3.04 56.08659 -42.84234659 collide rcvdPwr InterferencePwr dbm mw SINR Success PER STA3_9 ST9 -58.09 ST3 -60.60 8.71E-07 2.51 1 STA3_15 ST15 -42.84 17.76 98.55% 1.45% STA9_15 1.55E-06 15.24 8.31% 91.69% STA3_9_15 13.1 0% 100%   Marik Hsiao, MediaTek Inc.

MCS 5 PER in Channel Model D NLOS May 2016 MCS 5 PER in Channel Model D NLOS Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 3 STAs Results Marik Hsiao, MediaTek Inc.

1 BSS (B) 3 STAs (STA3, 9, 27) UL Analysis May 2016 1 BSS (B) 3 STAs (STA3, 9, 27) UL Analysis x y distance to AP B pathloss rcvdPower(STA->B) AP B 40 20 STA3 47.5 10.5 12.10371844 73.84278362 -60.59853763 STA9 47 12.5 10.25914226 71.32951202 -58.08526602 STA27 34 22.5 6.5 64.39259267 -51.14834668 The SINR in AP B should be lower than 10 when any collisions occurs AP B cannot successfully decode any data if the collisions occur. STA3, 9, and 27 should have the similar throughputs. Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 3 STAs Results Marik Hsiao, MediaTek Inc.

May 2016 2 BSS DL Analysis x y distance to AP B pathloss rcvdPower(A->B) AP A 44.72135955 93.70865011 -73.46440412 The interference powers received by AP A and AP B are both higher then sensitivity. The interference from AP A or AP B to STAs in BSS B or BSS A is small, respectively All STAs can successfully decode their packets Conclusions All STAs’ throughputs in the same BSS should be similar. BSS A and BSS B should have the similar total throughputs Marik Hsiao, MediaTek Inc.

May 2016 2 BSS (A+B) Results Marik Hsiao, MediaTek Inc.

rcvdPower(STA->A) May 2016 2 BSS, A DL B UL, Analysis x y distance to AP A pathloss rcvdPower(STA->A) AP A   STA3 47.50 10.50 48.65 94.98748909 -81.7432431 STA21 33.50 17.00 37.57 91.0586944 -77.81444841 STA27 34.00 22.50 40.77 92.30281117 -79.05856517 The interference powers from STA3, 21, and 27 to AP A are all lower than sensitivity. AP A will send out its DL data without suspending BO counters. The interference powers from STA 3, 21, and 27 to STAs in BSS A are small except STA26 Only when STA26 is receiving its DL data and STA21 and/or STA27 send UL data simultaneously, the SINR will decrease to around 17.5 The probability is small SINR 17.5 still has around 98.5% successful rate. Marik Hsiao, MediaTek Inc.

May 2016 2 BSS (A+B) Results Marik Hsiao, MediaTek Inc.

May 2016 2 BSS, A UL B DL, Analysis All the interference powers from BSS A STAs to AP B are lower than sensitivity. All the interference powers from BSS A STAs to BSS B STAs are small as well. AP B will continue send DL data without suspending BO counters. The interference powers from AP B to STA2, 5, 23, 25, 26, and 29 are higher than sensitivity. The throughputs of other STAs will depend on SINR and PER. Marik Hsiao, MediaTek Inc.

May 2016 2 BSS (A+B) Results Marik Hsiao, MediaTek Inc.

May 2016 2 BSS (A+B) Results Marik Hsiao, MediaTek Inc.

May 2016 3 BSS Results Marik Hsiao, MediaTek Inc.

May 2016 3 BSS Results Marik Hsiao, MediaTek Inc.

May 2016 3 BSS Results Marik Hsiao, MediaTek Inc.

May 2016 3 BSS Results Marik Hsiao, MediaTek Inc.

May 2016 Conclusion Results from 1 BSS test cases align with prior efforts from other companies Results from 2 BSS DL test case align with prior efforts from other companies Lack of alignment in other 2BSS test cases and all 3BSS test cases due to sparseness of test results submitted and divergence among submitted results Since prior efforts suggest DL test results are easier to align, we are waiting for more results for the 2BSS and 3BSS DL test cases as the next step to analyze and come up with convergent results

Reference [1] 11-15/0680r3 Reference Box5 Calibration Assumptions and Parameters [2] 11-15/0980r10 TGax Simulation Scenarios [3] 11-14/1523r5 Offline Discussion Minutes of SLS Calibration [4] 11-15/0681r1 TG ax Scenarios: Proposed Text additions to 14/980 for Box5 Calibration [5] 11-15/0802r1 Calibration Results of SS6 [6] 11-15/0885r0 Box 5 calibration result

May 2016 May 2016 Appendix Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) DL Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 1 STA Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 1 STA Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 1 STA Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 1 STA Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 1 STA Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 2 STAs Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 2 STAs Results Marik Hsiao, MediaTek Inc.

May 2016 1 BSS (B) 2 STAs Results Marik Hsiao, MediaTek Inc.