摘要： 无线传感器网络能够协作地实时监测、感知和采集各种环境或监测对象的信息，并对其进行处理，传送到信息接收者，其关键技术之一是路由算法及实现。分析了Directed Diffusion路由算法，用UML统一建模语言对该路由算法进行了建模，在网络模拟工具NS的模块上实现了对该路由算法的模拟仿真，分析了其时延、能耗、数据发送率等网络性能，并与Flooding路由算法作比较。仿真结果表明Directed Diffusion路由算法在某些方面有较好的特性。

关键词: 无线传感器网络, UML, 路由算法, 仿真实现

Abstract: Wireless sensor network can be used for testing, sensing, collecting and processing information of monitored objects and transferring the processed information for receivers, and its key technique is the routing algorithms. This paper analyzes the Directed Diffusion routing algorithm, and it is modeled by the unified modeling language and simulated by the network simulator. According to the simulation results, the performances of the Directed Diffusion routing algorithm such as delay, average dissipated energy, and distinct event delivery ratio are evaluated. It indicates that the Directed Diffusion routing algorithm has better characteristics in some aspects.

Key words: Wireless sensor network, Unified modeling language, Routing algorithm, Simulation

中图分类号: 

• TP393