基于网格节点移动协议的HWSN覆盖率增强研究

Research of Improving Coverage of HWSN Based on Grid Nodes Mobile Protocol

针对异构无线传感器网络(HWSN)初始部署和运行过程中的覆盖率问题,提出一种基于网格节点移动(MGN)的HWSN协议。首先将网络分成若干个网格矩阵;然后在每个网络运行周期,对网格中节点数目和节点能量进行检测;最后根据检测结果,唤醒或睡眠部分节点,并移动其他节点来均衡各个网格,从而扩大节点的覆盖率并延长网络寿命。仿真结果表明,相比其他几种较为先进的协议,本协议具有更高的网络覆盖率,显著延长了网络寿命。

For the issue that the coverage rate of Heterogeneous Wireless Sensor Network （HWSN） in the process of its initial deployment and operation, a protocol for HWSN based on Mobile Grid Network （MGN） is proposed. To increase the coverage rate and lifetime of a network, it is divided into several grids, the number and energy level of nodes of each ∽d is detected in each network operation cycle, then some nodes are being wake or sleep according to the detected result, and some other nodes are shifted in order to balance each grid. The simulation results show that proposed protocol has higher network coverage rate than several other advanced protocols, and it effectively delays the network lifetime.