Density-aware routing in delay tolerant networks
节点密度感知的容迟网络路由协议*

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 centrality. 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.