DTN技术在环境监测网络中的应用

Application of DTN Technology in Constructing Environment Monitoring Network

为有效解决恶劣环境下的野外环境监测数据采集网络数据传输率低的问题,将容迟网络(DTN)技术引入到环境监测网络构建中,节点采用存储转发的方式尽力传输数据包以应对频繁、长时间的网络中断。并在节点聚集分布的DTN环境下,研究基于ProPHET的泛播路由算法,并且提出一种基于节点运动趋势的泛播方法。仿真实验证明,该方法使平均消息传递率提高了约12%。

In order to effectively solve the slow transfer rate issue of environmental data collection system under harsh environments,delay tolerant network（DTN） technology is introduced to the construction of environmental monitoring network.The data is transmitted by storage-and-forward method so as to cope with the frequent and long-time network outages.The paper first studies ProPHET-based anycast（PBA） routing algorithm under the DTN environment with aggregated distribution of nodes,and then proposes a motion trend-based anycast（MTBA） scheme.Simulation result shows that MTBA outperforms PBA about 12% in average message delivery rate.