Literature Database Entry

wojnar2025coordinated

Maksymilian Wojnar, Wojciech Ciezobka, Artur Tomaszewski, Piotr Chołda, Krzysztof Rusek, Katarzyna Kosek-Szott, Jetmir Haxhibeqiri, Jeroen Hoebeke, Boris Bellalta, Anatolij Zubow, Falko Dressler and Szymon Szott, " Coordinated Spatial Reuse Scheduling With Machine Learning in IEEE 802.11 MAPC Networks," IEEE Journal on Selected Areas in Communications, July 2025. (online first)

Abstract

The densification of Wi-Fi deployments means that fully distributed random channel access is no longer sufficient for high and predictable performance. Therefore, the upcoming IEEE 802.11bn amendment introduces multi-access point coordination (MAPC) methods. This paper addresses a variant of MAPC called coordinated spatial reuse (C-SR), where devices transmit simultaneously on the same channel, with the power adjusted to minimize interference. The C-SR scheduling problem is selecting which devices transmit concurrently and with what settings. We provide a theoretical upper bound model, optimized for either throughput or fairness, which finds the best possible transmission schedule using mixed-integer linear programming. Then, a practical, probing-based approach is proposed which uses multi-armed bandits (MABs), a type of reinforcement learning, to solve the C-SR scheduling problem. We validate both classical (flat) MAB and hierarchical MAB (H-MAB) schemes with simulations and in a testbed. Using H-MABs for C-SR improves aggregate throughput over legacy IEEE 802.11 (on average by 80% in random scenarios), without reducing the number of transmission opportunities per station. Finally, our framework is lightweight and ready for implementation in Wi-Fi devices.

Contact

Maksymilian Wojnar
Wojciech Ciezobka
Artur Tomaszewski
Piotr Chołda
Krzysztof Rusek
Katarzyna Kosek-Szott
Jetmir Haxhibeqiri
Jeroen Hoebeke
Boris Bellalta
Anatolij Zubow
Falko Dressler
Szymon Szott

BibTeX reference

`@article{wojnar2025coordinated,

author = {Wojnar, Maksymilian and Ciezobka, Wojciech and Tomaszewski, Artur and Chołda, Piotr and Rusek, Krzysztof and Kosek-Szott, Katarzyna and Haxhibeqiri, Jetmir and Hoebeke, Jeroen and Bellalta, Boris and Zubow, Anatolij and Dressler, Falko and Szott, Szymon},

doi = {10.1109/JSAC.2025.3584555},

note = {to appear},

title = {{Coordinated Spatial Reuse Scheduling With Machine Learning in IEEE 802.11 MAPC Networks}},

journal = {IEEE Journal on Selected Areas in Communications},

issn = {0733-8716},

publisher = {IEEE},

month = {7},

year = {2025},

}

`