改进型DTN网络路由协议

Improved routing protocol in DTN

针对Epidemic路由协议在DTN网络中应用时存在的网络资源消耗过大,且无法保障通信可靠性的问题.采用理论分析和实验仿真相结合的方法,提出了发送域、链路可靠度的概念及一种基于位置信息的改进型路由协议,并对改进型路由协议和Epidemic路由协议在到达率,平均时延及路由开销等性能进行了对比分析.研究结果表明:减少消息副本提高了网络利用率,测量链路可靠度选择的最优路径达到了优化网络的目的,研究结论在一些特殊网络中具有一定得应用价值.

In order to solve the problem of the Epidemic routing in DTN application that the network consumption is too high, and the reliability of the communication can not be guaranteed, this paper proposed the concept of sending domain, reliability and a improved routing protocol based on location information with the method of theoretical analysis and experimental simulation, and analyzed the arrival rate, average delay, routing overhead and other properties in the improved routing protocol and Epidemic routing protocol. The results show that reducing copy of the message improves the network utilization, and measuring the link reliability of selecting the optimal path achieves the optimization of the network. The conclusion of the study has certain application value in some special network.