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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.
When the application of Epidemic routing protocol in DTN network, it consumes too much network resources and can not guarantee the reliability of communication.According to the method of theoretical analysis and experimental simulation, this paper proposes the concept of sending domain and link reliability, An improved routing protocol based on location information is proposed, and the performance of improved routing protocol and Epidemic routing protocol in terms of arrival rate, average delay and routing overhead are compared and analyzed.The results show that reducing the message copy improves network utilization , The optimal path for the reliability of the link is measured to achieve the purpose of optimizing the network. The conclusion of the study has certain application value in some special networks.