基于虚拟力的WSNs能量高效分簇路由协议

作为无线传感器网络(wireless sensor networks,WSNs)的关键技术之一,分簇路由协议因其可扩展性较强及能耗较低等优势,逐渐成为WSNs路由协议的研究热点.如何对簇首进行最佳化选取,是提高分簇路由协议性能的关键.通过揭示不同场景中的簇首数量及网络能耗之间的映射关系,以能耗最小化为目标,构建了簇首最...

Energy-efficient Clustering Routing Protocol for Wireless Sensor Networks Based on Virtual Force

As one of the key technologies of wireless sensor networks (WSNs), clustering routing protocol has gradually become a research hotspot of WSNs routing protocol due to its advantages of strong scalability and low energy consumption. How to select the optimal cluster head is the key to improve the performance of cluster routing protocol. In this study, by revealing the mapping relationship among cluster head number and the network energy consumption in different scenarios, with the goal of minimizing energy consumption, the calculation theory of optimal number of cluster heads is constructed. The conditions of using multi-hop strategy among clusters are discussed for different scale networks; the concept of virtual cluster head and its three virtual force models is proposed. Three virtual force models between virtual cluster head and boundaries, node and other virtual cluster heads are constructed, and the optimal distance thresholds for different virtual forces and the differences are discussed. In order to realize the minimization and equalization of network energy consumption, the fitness function of residual energy and distance factor is set up to form an energy efficient routing protocol based on virtual force. The experimental results show that in networks of various scales, compared with the fitness-value based improved gray wolf optimizer, the improved low-energy adaptive clustering hierarchy protocol and the modified distributed energy efficient clustering algorithm, the algorithm proposed in this studymakes the cluster head more uniform, the node energy consumption lower and more balanced, and the network life is effectively extended.