Analytical modelling and performance analysis forwireless ad-hoc networks using four-way handshaking mechanism

We present a new analytical model of MAC layer for wireless ad hoc networks that takes into account frame retry limits for four-way handshaking mechanism. This model offers flexibility to address key design issues such as the effects of traffic parameters and possible improvements for wireless ad hoc networks. It effectively captures the important network performance characteristics such as throughput, channel utilization, delay and average energy. Under this analytical framework, we evaluate the effect of RTS (request-to-send) state on unsuccessful transmission probability and its effect on the performance specially when the hidden terminal problem is dominant, the traffic is heavy, or the data frame length is very large. By using our proposed model, we show that the probability of collision can be reduced when using RTS/CTS mechanism. Thus, the throughput increases and, at the same time, the delay and the average energy to transmit the frame is reduced.