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广播是无线传感网的基本服务之一。在异步无线传感网中,睡眠调度在节省能量的同时,节点异步的苏醒增加了广播的复杂性。传统的研究中使用全局静态信息或者局部的动态信息指导广播。但前者忽略了由于睡眠调度带来的动态性,后者中重心放在了局部优化导致全局性能有提升的空间。本文提出基于预测的无线传感网广播策略,结合概率选择,预测节点收到数据包的时间选择候选发送节点。仿真结果表明,该策略可以显著提高广播性能。
Broadcasting is one of the basic services of wireless sensor networks. Asynchronous wireless sensor networks, sleep scheduling energy-saving at the same time, the node asynchronously awakened to increase the complexity of the broadcast. Traditional research uses global static information or local dynamic information to guide the broadcast. However, the former ignores the dynamic nature brought by sleep scheduling, and the latter focuses on the space where local optimization leads to global performance improvement. In this paper, a prediction-based wireless sensor network broadcast strategy is proposed, which combines with the probability selection to predict the time when a node receives a data packet. Simulation results show that this strategy can significantly improve the broadcast performance.