Analytic Model for IEEE 802.11e EDCA

This paper investigates the analytic performance of IEEE 802.11 e enhanced distributed channel access (EDCA) under saturated traffic load. Compared with the existing analytical models of EDCA, we obtain transmission probability τ l by applying the renewal theory and provide simple but accurate delay model for IEEE 802.11e EDCA by considering the possibility that a station's backoff procedure may be suspended due to transmission from other stations, which is inherent to the difference of AIFS value. We derive several performance measures such as the probability generating function of HoL-delay(MAC delay) and throughput.

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