智能家居无线传感网定向扩散协议的优化方法

Optimized Method Suitable for Smart Home Wireless Sensor Network Directed Diffusion Protocol

定向扩散协议是以数据为中心的平面路由协议,针对应用于智能家居领域,提出对定向扩散路由算法的改进,将节点按房间的顺序规划在不同的矩形监测区域内,家庭设备节点在线注册保存进入家庭网关Sink节点中,Sink节点识别消息接收节点的源ID号并扩散消息到指定的矩形监测区域内,完成区域节点之间的消息转播,源节点接收消息完成梯度建立,以此流程再进行下一个监测区域的工作。将改进算法与传统的泛洪质询算法进行了比较,结果显示,改进算法提高网络的能效性,延长网络生命周期且节省能耗。

Directed Diffusion protocol is a planar routing protocol with the center of data.Aiming at smart home applications,this design puts forward improvements on Directed Diffusion routing algorithm.According to the order of the rooms,the nodes were arranged in different rectangular monitoring areas.The famliy equipment nodes regist online and store in the Home Gateway Sink node,the Sink node identifies the source IDs and spread the news to the specified rectangle monitoring area.The nodes start to broadcast news reciprocally,Finally,the source node receives news and the gradient was established.The next monitoring area of works as the last process.Compared the improved algorithm with the traditional flooding inquiry algorithm,the results show that the improved algorithm have a good performance in terms of energy efficiency of network.It extends the network life cycle,and saves the energy consumption.