The application of distributed hash tables (DHTs) s trengthens the scalability of P2P networks. How to transplant it to MANET has attracted extensive concerns. As MANET has the characteristics of resource limitation and high dynamic property, in light of these, in this paper a new routing model for MANET based on DHTs is proposed. In this model the topology consistence of distributed hash tables is enhanced by setting virtual coordinates, and the link stability is improved by the prediction mechanism of link' s lifetime. The results of simulation show that the two key indices,average physical hops and packet delivery ratio,are all improved a great deal.%分布式哈希表的应用增强了P2P网络的可扩展性,如何将其移植到移动Ad hoc网络受到了广泛关注.针对移动Ad hoc网络资源受限和高度动态性的特点,提出了一种基于分布式哈希表的移动Ad hoc路由模型,该模型通过设置虚拟坐标点来增强分布式哈希表的拓扑一致性,通过链路生存时间预测机制来增强路由链路的稳定性.仿真实验结果表明,该模型在平均物理跳数和分组投递率两个关键指标有了较大提高.
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