计算机科学 ›› 2015, Vol. 42 ›› Issue (3): 91-95.doi: 10.11896/j.issn.1002-137X.2015.03.019
梁 泉,贺文武,张永晖
LIANG Quan, HE Wen-wu and ZHANG Yong-hui
摘要： 机会移动传感网中数据收集策略既要保证传输成功率、减小网络开销,也要尽量降低传感器的能量消耗,从而延长网络生命期。遵循简单实用的原则,提出了基于方向感知的数据收集策略(Data Gathering based on Perceptive Direction,DGPD)。当两个传感器相遇时,以距离它们最近的Sink节点为参照点,分别计算各自的感知方向。把感知方向作为一个重要参数来确定两个相遇传感器的消息转发路由,把消息转发给更有利于接近Sink节点的传感器,从而提高数据收集成功率,减少过多的消息转发。模拟实验结果表明,这种策略可以有效地完成数据收集,并获得较高的网络性能。
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