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研究了无线传感器网络中,如何在不同的候选位置放置数据汇聚节点来最大化网络生命周期。通过定义“放置模式”这一概念,对数据流通模式进行分类,从而从量级上降低了需要调度的因素的数目。基于这样的理念,对问题建立了线性优化模型,来构建一种最佳的放置策略。最后,通过具体的试验验证了提出方法的有效性,说明了即使使用一个移动位置受限的汇聚节点,也会极大地提升网络生命周期。
In wireless sensor networks, how to place data sink nodes at different candidate locations to maximize the network lifetime is studied. By defining the concept of “placement pattern ”, data circulation patterns are categorized, reducing the number of factors that need to be scheduled in magnitude. Based on this concept, a linear optimization model is built on the problem to construct an optimal placement strategy. Finally, the validity of the proposed method is verified through a detailed experiment, which shows that even using a sink node with limited mobile location can greatly improve the network life cycle.