无线带状传感网拓扑控制算法及其唤醒机制

Topology Control Algorithm and Sleep-Awake Scheme for Strip-Based Wireless Sensor Networks

为解决无线带状传感网中各节点能耗不均、易形成断路等问题,提出一种改进的拓扑控制方法及与之相符合的睡眠唤醒机制.在固定分簇的基础上,对簇头采用循环迁移调度机制以控制侦听/睡眠比和簇内外通信距离,并通过动态调整簇头的侦听时间以达到负载均衡.仿真结果表明,该算法能延长网络寿命,并提高网络后期监测区域完整性.

To solve the problem of unevenness in energy consumption which tends to cause the network disconnection in strip-based wireless sensor networks, a improved topology control algorithm and sleep- awake scheme is proposed. Based on the set clustering, the cluster-head nodes are periodically elected under a migration-based scheduling mechanism designed to regulate nodes＇ duty cycles as well as intra/ inter-cluster communication distances. And the load balance of them is achieved by adaptively adjusting the listening schedule. Simulations show that this algorithm could effectively prolong the network lifespan and improve the network completeness of the sensing area in the later period.