无线传感器网络定向扩散路由协议研究  

Research on the Directed Diffusion Routing Protocol of Wireless Sensor Networks

作　　者：万健[1] 吴建荣[1] 徐向华[1] 

机构地区：[1]杭州电子科技大学计算机学院网格与服务计算技术实验室,浙江杭州310018

出　　处：《计算机工程与科学》2009年第6期99-102,共4页Computer Engineering & Science

基　　金：国家自然科学基金资助项目(60873023);浙江省科技计划资助项目(2007C11023);浙江省新苗人才计划资助项目(2007R40G2040097)

摘　　要：在分析比较定向扩散路由算法的基础上,本文提出一种改进的路由协议DD-RS。即在Interest扩散过程中,设计了一种基于跳数值的梯度建立机制,使得在interest扩散完成后,既能找到一条或多条通往Sink节点优化的数据传输路径,又能保留若干条其他路径作为候选路径,保证了网络传输的实时性和健壮性。理论分析和仿真结果表明,改进的协议有效地减少了网络的能耗和数据传输的等待时延,延长了网络的生存周期。Based on the analysis and comparison of the directed diffusion routing algorithms, we introduce an improved routing protocol named DD-RS. In the interest diffusion process,we design a gradient based on hop count. After the interest diffusion is completed,one or more optimal data transfer paths can be found, some other paths can be reserved as the candidate paths. It ensures the real-timeness and robustness of network transmission. Theoretical analysis and simulation results show that the improved protocol efficiently decreases energy comsuption, shortens the delay of data transmission and extends the lifetime of the whole network.

关 键 词：无线传感器网络 定向扩散 DD-RS 梯度 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]