摘要
该文在DD协议的基础上,设计了一种基于跳数值的梯度建立机制,使数据沿着跳数最小的路径传输。而且还设计了一种当节点移动时,梯度域可以进行自我调整的机制,尽量去找一条或多条代价小的路径,保证了网络传输的健壮性。通过程序仿真实验,证明了改进的方案比传统的定向扩散路由协议减少了网络开销,延长了网络整体的生存周期。
Based on directed diffusion routing protocol, we design a gradient mechanism based on hop count, to make data transmission along w/th a path which has the minimum hop count, and we design a mechanism which make node he able to selfadjust its own gradient whenever its movement occurs and make effort to find one or more minimum cost path. It ensures the robustness of network transmission. Simulation results show that comparing to DD protocol, the improved protocol effictively decrease the network overhead, and extend the lifetime of the whole networks.
出处
《杭州电子科技大学学报（自然科学版）》
2008年第5期135-138,共4页
Journal of Hangzhou Dianzi University：Natural Sciences
基金
浙江省科技计划重点资助项目(C21G3230005)
浙江省新苗人才计划资助项目(R40G2040097)
关键词
无线传感器网络
定向扩散
梯度
节点移动
wireless sensor network
directed diffusion
gradient
node mobility
