Nov 2018 doc IEEE 802 11 181957 r

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 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

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 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. This presentation only considers DOWNLINK NOMA. DL NOMA can be implemented without drastic changes into PHY layer Submission Slide 2 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Basic Idea of Downlink NOMA (1) AP STA 2 Power P To STA 2 To STA 1 Submission Slide 3 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Basic Idea of Downlink NOMA (2) TX side RX side Q STA 1 I STA 2 Submission Slide 4 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 TX Scheme SIFS DIFS To STA 2 AP STA 1 To STA 1 ACK STA 2 Submission ACK Slide 5 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Example 30 25 Mbps 20 Standard 802. 11 a SNR 1 3 d. B SNR 2 19 d. B MCS TDMA STA 1 0 STA 2 6 MCS NOMA STA 1 0 STA 2 4 15 10 5 0 STA 1 Throughput STA 2 Throughput Round Robin 1 K/1 K Submission Agregated Throughput Geometric Mean NOMA 1 K/4 K Slide 6 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Example Standard 802. 11 a SNR 1 3 d. B 25 SNR 2 19 d. B 20 MCS TDMA STA 1 0 STA 2 6 MCS NOMA STA 1 0 STA 2 4 Mbps 30 15 10 +43% 5 +92% 0 STA 1 Throughput STA 2 Throughput Agregated Throughput Geometric Mean Round Robin 1 K/1 K NOMA 1 K/4 K Round Robin 1 K/4 K Proportional Fair 1 K/4 K Submission Slide 7 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Link 2, Mbps Balance between Link 1 and Link 2 40 35 30 25 20 15 10 5 0 NOM A 0 2 4 6 Link 1, Mbps Submission Slide 8 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Testbed. Proof of concept AP (SDR) STA 2 (SDR) As NOMA device STA 1 (Laptop) As legacy device Submission Slide 9 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 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) when providing guaranteed throughput for the furthest STA (STA 1) Submission Slide 10 Evgeny Khorov

Nov 2018 doc. : IEEE 802. 11 -18/1957 r 0 Straw Poll Is the problem of NOMA in 802. 11 interesting to you? • Yes • No • Abstain Submission Slide 11 Evgeny Khorov