Abstract: Concerning the medium access control shortcoming of wireless network, a sort of new algorithm was proposed in this paper. The algorithm was based on the dynamic p-persistent algorithm and its kernel idea was derived from virtual transmission or virtual thread. The aim that provided more information for the dynamic p-persistent algorithm to obtain the optimal transmission probability was to increase available efficiency of wireless bandwidth. The simulations show that the proposed algorithm increases throughput about 27%, and reduces collision rate about 28% on average.

Key words: Wireless Medium, Access Control, Transmission Probability, Throughput

摘要： 针对无线网络中的媒质访问控制存在的不足，提出了一种新的算法。该算法基于动态p-坚持算法，其核心思想采用虚拟传输或虚拟线程，目标是为动态p-坚持算法提供更多的信息以获得最佳传输概率，提高无线带宽的利用效率。仿真表明，新算法平均提高吞吐量约27%，平均降低碰撞率约28%。

关键词: 无线媒质, 访问控制, 传输概率, 吞吐量