Nov 2018 doc IEEE 802 11 181957 r

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Non-orthogonal Multiple Channel Access in Wi-Fi Date: 2018 -11 -11 Authors: Name Affiliation Evgeny Khorov IITP RAS Alexey Kureev IITP RAS Ilya Levitsky IITP RAS Submission Address Phone Email khorov@iitp. ru Slide 1 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Motivation In current networks, it is a typical situation when an access point serves several devises located at different distances from the AP and having different traffic load. In this case, Non-orthogonal multiple access (NOMA) can be a promising solution to increase spectrum efficiency. This presentation considers theoretical and experimental results for DOWNLINK NOMA. [1] proposes SOMA, which is actually a specific case of NOMA (having no SIC). [1] doc. : IEEE 802. 11 -18/1462 r 0 SOMA for EHT Submission Slide 2 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Basic Idea of Downlink NOMA Power TDMA Power P P To STA 1 STA 2 To STA 2 Different MCSs NOMA To STA 2 To STA 1 AP STA 1 Submission Slide 3 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Signal Superposition TX side RX side Q STA 1 I STA 2 Submission Slide 4 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 A possible transmission process SIFS DIFS To STA 2 AP STA 1 To STA 1 ACK STA 2 Submission ACK Slide 5 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 THEORETICAL RESULTS Submission Slide 6 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Theoretical Results PHY 802. 11 a SNR 1 3 d. B SNR 2 19 d. B MCS TDMA 0 and 6 MCS NOMA 0 and 4 0. 85 Submission Slide 7 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 More fair comparison PHY 802. 11 a SNR 1 3 d. B SNR 2 19 d. B MCS TDMA 0 and 6 MCS NOMA 0 and 4 0. 85 Submission Slide 8 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Balance between throughput for STA 1 & STA 2 Submission Slide 9 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 EXPERIMENTAL RESULTS Submission Slide 10 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Testbed AP (SDR) STA 2 (SDR) As NOMA device Can be used with legacy off-the-shelf device! Submission Slide 11 STA 1 (Laptop) legacy device Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Testbed. Experimental Setup AP (SDR) STA 2 (SDR) As NOMA device Replaced, to simplify gathering statistics Submission Slide 12 STA 1 (SDR) As legacy device Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Evaluation. Reference Throughputs STA 1 Payload ~ 1 k. B Submission STA 2 Payload ~ 2 k. B Slide 13 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Testbed. Results NOMA Link 1 MCS 1 Link 2 MCS 4 +56% STA 1 Payload ~ 1 k. B Submission STA 2 Payload ~ 2 k. B Slide 14 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Balance between throughput for STA 1 & STA 2 Submission Slide 15 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 NOMA Properties • Backward compatibility (STA 1 can be legacy) • Almost double throughput for the STA with poor channel (in case of fare resource allocation) OR • Manifold gain in throughput of the nearest STA (STA 2) while providing guaranteed throughput for the furthest STA (STA 1) • The results should be also valid for SOMA Submission Slide 16 Evgeny Khorov (IITP RAS)

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 1 Straw Poll Should NOMA/SOMA be considered as a possible direction for future 802. 11 standards? • Yes, for EHT • Yes, for a separate project • No • Need more info • Abstain Submission Slide 17 Evgeny Khorov (IITP RAS)