TXOP sharing with coordinated spatial reuse in multi-AP cooperative IEEE 802.11be WLANs

Núñez Cuadrado, David; Wilhelmi Roca, Francesc; Avallone, Stefano; Smith, M.; Bellalta, Boris

doi:http://dx.doi.org/10.1109/CCNC49033.2022.9700500

TXOP sharing with coordinated spatial reuse in multi-AP cooperative IEEE 802.11be WLANs

Citation

Nunez D, Wilhelmi F, Avallone S, Smith M, Bellalta B. TXOP sharing with coordinated spatial reuse in multi-AP cooperative IEEE 802.11be WLANs. In: 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC); 2022 Jan 8-11; Las Vegas, United States. [Piscataway]: IEEE; 2022. p. 864-70. DOI: 10.1109/CCNC49033.2022.9700500

Abstract

IEEE 802.11be networks (aka Wi-Fi 7) will have to cope with new bandwidth-hungry and low-latency services such as eXtended Reality and multi-party cloud gaming. With this goal in mind, transmit opportunity (TXOP) sharing between coordinated access points (APs) may contribute to alleviating inter-AP contention, hence increasing the overall network throughput. This paper evaluates two coordinated TXOP sharing strategies: coordinated time division multiple access (c-TDMA) and coordinatedTDMA with spatial reuse (c-TDMA/SR). We show that, while c-TDMA alone does not result in any significant improvement in terms of the WLAN throughput, it lays the groundwork to implement coordinated SR (c-SR) techniques. To evaluate the performance of c-TDMA/SR, we propose a fair scheduler able to select the best subset of parallel transmissions in WLAN deployments, as well as the appropriate power levels to be used by APs and stations (STAs), leading to maximum performance. The results obtained for c-TDMA/SR show significant throughput gains compared with c-TDMA, with values higher than 140% in 90% of the considered scenarios.

Description

Comunicació presentada a 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC), celebrat del 8 a l'11 de gener de 2022 de manera virtual.