基于公交系统的VDTN路由协议研究

Opportunistic routing is a research hotspot in DTN routing areas and attracts many researchers' attention.The most important issue in opportunistic routing is the selection of relay nodes.Due to nodes having stable social attributes and social relationships, taking the nodes' social attributes into account when selecting relay nodes will results in better forwarding strategies.This paper focuses on a new relay selection mechanism based on multiple social attributes in opportunistic routing, combining the energy consumption of nodes when forwarding data and the mobile features and nodes' social attributes. This paper uses QualNet to build two different simulation models for opportunity routing algorithm based on multiple social attributes and traditional DTN routing protocols. By comparing the average number of hops, network throughput, message delivery latency and other key performance metrics in the two different envirenments, we find that the opportunity routing algorithm based on multiple social attributes performs better compared with the traditional DTN routing protocols.