层次型无线传感器网络节点布置方案的研究

Research on node deploying scheme in layered wireless sensor networks

对于大规模层次型的无线传感器网络,越靠近sink的节点,数据转发量越大,能量消耗速度越快,因此节点的密度分布状况对整个网络的生命期有着很大的影响。对层次型无线传感器网络的节点能耗分布状况和密度分布状况进行了分析,提出一种适合于大规模网络的节点布置方案。通过与均匀布置方案相比较,提出的方案能够使网络生命期得到很大的延长。

For large-scale layered wireless sensor networks,the node is closer to the sink,the amount of data need to be transmitted is larger and the energy is consumed faster.So how to distribute the nods is important for the lifetime of the whole networks.This paper investigates energy consumption and density distribution in layered wireless sensor networks and a scheme of deploying sensor nodes is proposed.Compared with the scheme of deploying sensor nodes uniformly,the scheme proposed in this paper can effectively prolong the lifetime of the networks.