节点密度感知的容迟网络路由协议

摘要

To adapt to the highly dynamic changing and improve the routing performance in delay tolerant networks (DTNs) , this paper proposed a density-aware routing (DAR) scheme for DTNs based on the spatial node distribution and degree cen-trality. DAR introduced node distribution of mobility model. With the node density of current location, DAR dynamically chose the number of message copies disseminated. Relay selection and copies division were based on degree centrality. Simulation results show that DAR achieves high delivery ratio and low delivery delay with low resource consumption.%为适应容迟网络的动态变化,提高路由性能,结合空间节点分布和节点度中心性,提出一种节点密度感知的容迟网络路由协议DAR.该协议引入移动模型的节点分布,通过感知节点当前所处位置的节点密度,动态选择在网络中传播的消息副本数量,并根据节点的度中心性选择中继和分配消息副本数量.仿真结果表明,DAR能够提高传输率、降低传输延迟,在一定程度上降低了资源消耗.