When developing a new amendment to the IEEE 802.11bn (Wi-Fi 8) standard, a preemption mechanism for channel access was proposed. This mechanism allows a station to interrupt a lower-priority transmission from an access point and gain access to the channel when a higher-priority data frame arrives. The preemption mechanism potentially guarantees low latency for real-time applications (RTAs), and the task of configuring the parameters of this mechanism is currently relevant. We develop an analytical model of a Wi-Fi 8 network with several stations generating priority traffic and an access point transmitting non-priority data streams. The model allows us to find the dependence of the quantile of priority traffic delay and access point throughput on the parameters of the preemption mechanism.
Riterman et al. (Wed,) studied this question.
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