期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2015
卷号：7
期号：6
页码：45
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：The IEEE 802.11 backoff algorithm is very important for controlling system throughput over contentionbasedwireless networks. For this reason, there are many studies on wireless network performance focus ondeveloping backoff algorithms. However, most existing models are based on saturated traffic loads, whichare not a real representation of actual network conditions. In this paper, a dynamic control backoff timealgorithm is proposed to enhance both delay and throughput performance of the IEEE 802.11 distributedcoordination function. This algorithm considers the distinction between high and low traffic loads in orderto deal with unsaturated traffic load conditions. In particular, the equilibrium point analysis model is usedto represent the algorithm under various traffic load conditions. Results of extensive simulationexperiments illustrate that the proposed algorithm yields better performance throughput and a betteraverage transmission packet delay than related algorithms.
关键词：IEEE 802.11; Backoff algorithm; Contention window threshold; Equilibrium point analysis; Dynamic;control backoff time algorithm
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