基于adhoc网络的公平介质访问改进算法

Improved Fair Media Access Algorithm Based Wireless Ad-Hoc Networks

在公平介质访问分估测算法FMAS的基础之上提出了一种新的改进算法AFMAS,该算法引进一个集合变量来记录接受到的数据包源节点,从而避免了重复计算信道占用时间,能够更加准确地估算自己与其他竞争节点所分配的带宽比,并通过参考竞争节点数来调整窗口大小.仿真实验表明,AFMAS算法的公平性更加显著,并且吞吐量有了较大的改善.

Provided a new design AFMAS extends the work of FMAS.The new algorithm use one set to record the source node who send the dates so that can avoid repetitively compute the time which nodes cost.And it can more accurately estimate the ratio of local station throughput with other nodes,and to adjust contention window by the reference nodes.Simulation results show that the AFMAS algorithm get better fairness and the throughput gets improved.