基于IEEE802.16e的退避算法研究与改进

Research on An Improvement Backoff Algorithm Based on IEEE802.16e

对IEEE802.16e的退避算法进行了研究,分析了该算法的不足,并进行了改进,提出了基站可随冲突MS数目动态调整起始退避窗大小的改进退避算法,给出了两种算法的仿真实验结果,证明了改进的算法可大大提高系统接入的性能,降低了接入冲突的概率.

This paper researches on the backoff algorithm of IEEE802.16e,and analyzes the shortage of the algorithm.An improvement algorithm,that base station can adaptively adjust the start backoff windows according to the collision MS,is proposed.And the comparison of two algorithms is provided by the simulation.The result proves that the improvement algorithm can greatly improve the performance of the random access,and reduce the collision probility.