中文摘要：

在IEEE802．11bMAC层协议的研究基础上，提出了一种基于无线AdHoc网络的最佳中继选择策略，该策略综合考虑瞬时信道信息和节点剩余能量，能够有效防止信道条件好的节点的过度使用，并能保证系统高吞吐量。以饱和吞吐量和网络生存时间为性能指标，对新算法和以往协作MAC算法进行仿真和比较，结果表明新算法在网络吞吐量下降不明显的情况下，能大大增加网络生存时间。

英文摘要：

Based on IEEE 802. 11 h MAC layer protocol, a best relay selection method for Ad Hoc network is proposed by consider- ing both the instantaneous channel information and residual energy, it can effectively prevent the excessive use of nodes whose channel condition is good, and ensure high system throughput. In this paper, simulation and contrast are given for the new and pre- vious algorithms with the saturated throughput and residual energy information. It turns out that new algorithm can extend the net- work lifetime when throughput decline is not obvious.