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休眠调度设计是无线传感器网络一种重要的通信节能方法。针对监测典型应用,为了实现长时间的监测应用要求,充分利用冗余部署提供的能量资源,提出了一种能量相关的分布式自适应休眠调度算法。算法利用极大独立集构建思想,结合节点层次级别、实时的能量消耗、连通度等信息动态选择连通支配节点集作为网络骨干,使得网络活跃节点数量最小化。仿真试验分析表明,算法能够有效地利用冗余节点提供的能量资源,扩展了网络的生命周期。
Sleep scheduling design is an important method of communication energy saving for wireless sensor network. For monitoring typical applications, in order to achieve long-term monitoring application requirements, fully utilize the energy resources provided by redundant deployment, an energy-based distributed adaptive sleep scheduling algorithm is proposed. The algorithm uses the concept of maximal independent set, and dynamically selects the set of connected nodes as the backbone of the network based on the node level, real-time energy consumption, connectivity and other information to minimize the number of active nodes in the network. Simulation analysis shows that the algorithm can effectively utilize the energy resources provided by redundant nodes and extend the life cycle of the network.