传感器网络中面向数据聚集的有向分簇算法  

A Directional Clustering Algorithm for Data Aggregation in Sensor Networks

作　　者：蒋文涛[1,2] 吕俊伟[2] 杨曙辉 郭宁[2] 

机构地区：[1]海军装备研究院,北京102249 [2]海军航空工程学院控制工程系,山东烟台264001 [3]中国船舶重工集团第709研究所,武汉430070

出　　处：《北京邮电大学学报》2012年第3期25-29,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家高技术研究发展计划项目(2008AA01Z133);国家自然科学基金项目(60773055)

摘　　要：针对现有的分簇算法因存在数据回传现象使节点在能量利用效率方面存在不足的问题,提出了一种面向数据聚集的有向分簇算法,使节点数据总是沿着接近Sink的方向传输,避免了数据回传带来的能量浪费.仿真实验结果表明,有向分簇算法具有较高的能量利用效率,能延长传感器网络的生存周期.Clustering is an important energy-saving mechanism in sensor networks. Most existing cluste- ring algorithms ignore the reverse-data-forwarding phenomenon suffering from limitations in energy effi- ciency. A directional clustering algorithm （DCA） is proposed for data aggregation in sensor networks. DCA ensures that node＇ s data is always transmitted towards to sink but not away from it during the whole forwarding route, so as to avoid energy waste caused by the reverse-data-forwarding phenomenon. Simula- tions show that DCA possesses higher energy efficiency and can prolong the lifetime of sensor networks.

关 键 词：数据回传 有向分簇 数据聚集 能耗 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]