  Many modern wireless networks integrate carrier sense mul-tiple
access/collision avoidance (CSMA/CA) with exponential backoff as medium access
control (MAC) technique. In order to decrease the MAC overhead and the
collision probability, we propose in this paper a new backoff strategy leading
to better saturation throughput and access de-lay performance comparing to the
classical protocol. We investigate the CSMA/CA with RTS/CTS technique, and we
show that our strategy reaches better saturation throughput and access delay
especially in dense networks. This proposed strategy distributes users over all
the backoff stages to solve the bottleneck problem present in the first backoff
stage. Finally, we analyze our strategy and we compare it to the classical one
modeled by Markov chain. Analytical and simulation results show the improvment
in term of saturation throughput. Cumulative density func-tion (CDF) of the
access delay illustrates the important gain obtained by the proposed strategy.
