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Recently, several analytical models have been proposed to evaluate the performance of IEEE 802.11 RTS/CTS access mode in non-saturation traffic conditions. However, to the best of the authors' knowledge, none of these models take into account the IEEE 802.11 recovery mechanism for control and data packets together in non-saturation mode and in a presence of transmission errors. In this paper, they propose an M/G/1/K queue with independent samples from saturation analysis to provide a new insight into the QoS performance and queueing behavior of the IEEE 802.11 system. Extensive simulation and analysis results show that their analytical model can accurately predict the throughput, QoS, and queueing characteristics of the RTS/CTS under different channel and traffic conditions.
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