Backoff Strategies in Hiperlan2 with Error Control Protocol

In this paper, we study the impact of random access phase in Hiperlan2 medium access control frame. We propose and study several backoff strategies for the unsuccessful users in the random access phase. Markov chain modeling is used to model the random access channels. We also applied the error control to the transmission state. Instead of assuming the channel is error free, we studied the impact when the channel is in error. We developed analytical model and we applied this model for simple backoff strategy model. A comparison is made between these models in terms of their throughput, delay, energy, etc. The performance of the error control model is shown in terms of average number of retransmissions and the efficiency.