IEEE Transactions on Parallel and Distributed Systems
Design and analysis of an adaptive backoff algorithm for IEEE 802.11 DCF mechanism
NETWORKING'06 Proceedings of the 5th international IFIP-TC6 conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems
MAC Access Delay of IEEE 802.11 DCF
IEEE Transactions on Wireless Communications
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A novel contention aware adjusting mechanism is proposed in this letter. Compared with the Binary Exponential Backoff algorithm defined in standard, our scheme can determine the contention window based on the collision status rapidly and the collision probability can be reduced dramatically; moreover, the dynamical varying timing method can make the node adjust the number of packets sending to MAC queue during the busy or idle period. The simulations show that our mechanism is able to optimize the parameters of packets sending out, utilize the radio resource reasonably, and decrease the average packet delay obviously.