Throughput Analysis of IEEE 802.11bn Coordinated Spatial Reuse

Francesc Wilhelmi; Lorenzo Galati-Giordano; Giovanni Geraci; Boris Bellalta; Gianluca Fontanesi; David Nuñez

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arXiv · 2309.09169

Throughput Analysis of IEEE 802.11bn Coordinated Spatial Reuse

Francesc Wilhelmi·Lorenzo Galati-Giordano·Giovanni Geraci·Boris Bellalta·Gianluca Fontanesi·David Nuñez

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Abstract

Multi-Access Point Coordination (MAPC) is becoming the cornerstone of the IEEE 802.11bn amendment, alias Wi-Fi 8. Among the MAPC features, Coordinated Spatial Reuse (C-SR) stands as one of the most appealing due to its capability to orchestrate simultaneous access point transmissions at a low implementation complexity. In this paper, we contribute to the understanding of C-SR by introducing an analytical model based on Continuous Time Markov Chains (CTMCs) to characterize its throughput and spatial efficiency. Applying the proposed model to several network topologies, we show that C-SR opportunistically enables parallel high-quality transmissions and yields an average throughput gain of up to 59% in comparison to the legacy 802.11 Distributed Coordination Function (DCF) and up to 42% when compared to the 802.11ax Overlapping Basic Service Set Packet Detect (OBSS/PD) mechanism.

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Francesc Wilhelmi, Lorenzo Galati-Giordano, Giovanni Geraci, Boris Bellalta, Gianluca Fontanesi, David Nuñez. 2023-09-17. Throughput Analysis of IEEE 802.11bn Coordinated Spatial Reuse. https://arxiv.org/abs/2309.09169

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