  IEEE 802.11 networks continuously adapt to meet the stringent requirements of
emerging applications like cloud gaming, eXtended Reality (XR), and video
streaming services, which require high throughput, low latency, and high
reliability. To address these challenges, Coordinated Spatial Reuse (C-SR) can
potentially contribute to optimizing spectrum resource utilization. This
mechanism is expected to enable a higher number of simultaneous transmissions,
thereby boosting spectral efficiency in dense environments and increasing the
overall network performance. In this paper, we focus on the performance
analysis of C-SR in Wi-Fi 8 networks. In particular, we consider an
implementation of C-SR where channel access and inter-Access Point (AP)
communication are performed over-the-air using the Distributed Coordination
Function (DCF). For such a purpose, we leverage the well-known Bianchi's
throughput model and extend it to support multi-AP transmissions via C-SR.
Numerical results in a WLAN network that consists of four APs show C-SR
throughput gains ranging from 54% to 280% depending on the inter-AP distance
and the position of the stations in the area.
