基于动态可调簇的能量感知无线传感网数据收集协议

摘要

针对无线传感网中高效数据收集和传输的需要，提出了一种基于动态可调簇的能量感知数据收集协议ACEDGP（Adjusted Cluster-based energy-aware Data Gathering Protocol）。该协议初始时根据区域将节点等分成许多簇结构，簇首节点负责簇内部数据的收集和聚合，距离较远的簇通过其他簇首节点的转发实现数据的收集；随着时间的推移和节点能量的减少，ACEDGP能够统计各簇首能量消耗预测簇的通信频次，根据动态调整簇策略选择合适的簇首节点和合并分裂各个相邻的簇，保证各簇首节点簇内数据收集和簇间数据转发的能量平衡。仿真结果表明，与典型的分簇协议相比，ACEDGP能够更好地平衡节点的能耗，获得更长的网络生存期。%This paper presents an adjusted cluster based energy-aware data gathering protocol for wireless sensor network, called ACEDGP. ACEDGP divides nodes equally into several clusters according to different regions. Cluster heads gather and aggregate data from other nodes in clusters, and the data of clusters at a distance are gathered by the forwarding of other cluster heads. Along with the decrease of the energy in the cluster heads,ACEDGP can forecast the communication frequency by counting the energy consumption of the cluster heads. It can select the suitable cluster heads and combine or split the adjacent clusters according to the dynamic adjustment strategy,which can ensure sufficient energy in the cluster heads to gather data in the cluster and forwarding data over clusters. Simulation results show that ACEDGP can balance the energy consumption of nodes better,and thus increase the lifetime of WSN.