Saturation throughput - delay analysis of IEEE 802.11 DCF in fading channel

摘要

In this paper, we analytically analyzed the impact of an error-prone channelover all performance measures in a trafficsaturated IEEE 802.11 WLAN. Wecalculated station's transmission probability by using the modified Markovchain model of the backoff window size that considers the frame-error rates andmaximal allowable number of retransmission attempts. The frame error rate has asignificant impact over theoretical throughput, mean frame delay, and discardprobability. The peak throughput of a WLAN is insensitive of the maximal numberof retransmissions. Discard probabilities are insensitive to the station accessmethod, Basic or RTS/CTS.