针对传染路由协议(EPI)的泛洪机制会造成容迟网络资源浪费的问题,提出将节点间的历史相遇信息引入传染路由协议的改进算法(EPI-HT),以达到准确选择数据下一跳转发节点的目的。仿真结果表明,改进后的EPI-HT比EPI明显抑制了数据泛洪传输,可提高交付率,同时降低端到端时延。
Aiming at a problem that flooding mechanism of epidemic routing protocol may waste networks resources in DTN,this paper proposes an improved algorithm of epidemic routing(EPI-HT) which forwards messages accurately to the next-hop according to historical information between nodes.Simulation results indicate that EPI-HT can restrain data flooding,improve delivery ratio and decrease end-to-end delay.