一种提高WSN数据持续性的改进方案

Improved Scheme for Enhancing Data Persistence in Wireless Sensor Network

提出一种提高无线传感器网络(WSN)数据持续性的改进方案IIDP。节点根据一段时间内接收数据包的情况,估计网络中数据包的数量和节点总数,进而计算出节点存储数据所需参数并完成存储过程。为实现快速存储,节点在转发数据包时,根据概率选择一个接收过该包次数较少的邻居作为下一跳。理论分析及实验结果表明,该方案能获得比原有方案更高的数据持续性。

Data persistence is the time interval of effectively disseminating and storing data among nodes to achieve the desire,how to improve the data persistence is a hot-spot in current research.In this paper,an improved scheme for improving data persistence named IIDP is proposed.In the scheme,nodes estimate the number of nodes in the network and the number of data packets by receiving packets for some time,then they can compute the parameter of restoring data and store the data.In order to achieve the store process as quick as possible,nodes adopt a probability-based forwarding scheme that they always transmit a packet to one of their neighbors who receives the packet the least of times.Theoretical analysis and experiments show that IIDP not only can achieve higher data persistence but also can be more energy efficiency than previous schemes.