Nonsaturation throughput analysis of IEEE 802.11 distributed coordination function

This paper presents an analytical model for the performance study of IEEE 802.11 distributed coordination function (DCF). The maximum throughput can be achieved well below the saturated load. The analytical model for finite load must be studied to know the performance of the medium access control (MAC) layer below the saturated load. We extend the Bianchipsilas saturation model for the nonsaturated environment. We employ discrete Markov chain to analyse the probability for attempting transmission at each node for an arbitrary time slot. In this paper, we explore the discrete Markov chain model with the post backoff. This model is validated against the simulation.