%0 Journal Article
%T Clustering-Based Approximate Scheme for Data Aggregation over Sensor Networks<br>基于分簇的传感器网络数据聚集估算机制
%A XIE Lei
%A CHEN Li-Jun
%A CHEN Dao-Xu
%A XIE Li
%A <br>谢磊
%A 陈力军
%A 陈道蓄
%A 谢立
%J 软件学报
%D 2009
%I 
%X In this paper, a hierarchical clustering-based approximate scheme for in-network aggregation over sensor networks called CASA (clustering-based approximate scheme for data aggregation) is proposed, CASAachieves a good performance in terms of lifetime by minimizing overall energy consumption for communicationsand balancing energy load among all nodes, while maintaining user-specified quality of data requirement. CASA adopts an optimal parameter for the cluster size, which can well handle the hierarchical approximate work for in-network aggregation with the minimized communication cost. Furthermore, an adaptive tolerance-reallocating scheme is leveraged to further reduce the overall communication cost and maintain a load balance according to various data change rates over deployment regions. Experimental results indicate that significant benefits can be achieved through this CASA approximate scheme.
%K sensor network
%K data aggregation
%K approximation
%K cluster<br>传感器网络
%K 数据聚集
%K 估算
%K 分簇
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=B944740283A9DD29270124A741DFD3FC&yid=DE12191FBD62783C&vid=A04140E723CB732E&iid=E158A972A605785F&sid=A40901B6135B333E&eid=1F51A4E3D1D75885&journal_id=1000-9825&journal_name=软件学报&referenced_num=1&reference_num=20