DTN 中基于节点相遇规律的自适应散发等待路由

摘要

In delay-tolerant networking (DTN),Binary Spray and Wait (BSW)routing protocol has a certain blindness when forwarding messages.To deal with this issue,we propose to expand the routing information maintained by each node from one dimension to two dimensions,and study on this basis the encounter law of nodes as well as adjust dynamically the messages forwarding strategy,thereby solve the problem of low encounter possibility of current nodes and the destination nodes.Experimental results show that the proposed algorithm can effectively enhance message delivery rate on the basis of reducing the average latency compared with BSW routing.%在容滞网络中，针对散发等待 BSW（Binary Spray and Wait）路由协议在转发报文时具有一定的盲目性。提出将每个节点维护的路由信息由一维拓展到二维，并在该基础上研究节点的相遇规律，动态地调整报文转发策略，从而解决当前节点与信宿节点相遇概率较低的问题。实验结果表明，该算法与散发等待路由相比，在降低平均延迟的基础上，能有效改善报文的递交率。