定向扩散路由协议的改进分析

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。

Improved Research on Directed Diffusion Routing Protocol

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.