An Efficient Backoff Scheme for IEEE 802.11 DCf

摘要

This paper proposes a new backoff algorithm for a CSMA/CA protocol and an analytical model computing the saturation throughput and delay of the scheme. The scheme differs from the standard backoff schemes in that the backoff time is not uniformly chosen in the contention window interval which results in reduced collision probability under high loads. Numerical analysis shows that saturation throughput and delay of the proposed scheme outperform the earlier approach.