无线传感器网络中数据查询处理算法研究

Research of data query processing algorithm for wireless sensor networks

提出一种改进的定向扩散路由,将传感器网络分簇,查询兴趣由sink节点发,只在各簇头节点扩散,簇头以广播的方式在簇内发散兴趣消息,簇成员将感知数据传送到簇头节点,簇头负责将收到的数据进行融合后传到sink节点。仿真结果表明,改进后的查询路由比典型的查询路由定向扩散具有更高的能量有效性和更低的时延,能较好地延长网络的生命周期,提高了传感器网络数据查询处理效率。

This paper proposed an improved directed diffusion：Clustered sensor network nodes, propagated query interest from sink node and flooded among cluster headers, cluster headers broadcast interest to their cluster members, cluster members send their sensing datum to cluster headers, cluster headers aggregate the sensing datum and send them to sink node. Simulation experimental results show that the improved directed diffusion is more efficient and has less delay than directed diffusion, and can prolong the lifetime of sensor network, improve efficiency of data query processing.