Three-Dimensional Markov Chain Model for Performance Analysis of the IEEE 802.11 Distributed Coordination Function

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In this paper, the authors introduce an accurate analysis using three dimensional Markov chain modeling to compute the IEEE 802.11 DCF performance under heavy traffic conditions and absence of hidden terminals. The proposed model matches the real implementation of the DCF as presented in the standard through considering the impact of retry limits of control and data frames jointly on the performance of DCF mechanism. Moreover, transmission errors are added to the model as constant frame error probabilities. In addition to the throughout efficiency, this analytical analysis calculates the average packet delay, the packet drop probability and the average packet drop time for the DCF access modes, basic and RTS/CTS.