无线传感器网络中多事件簇的数据容错与能效研究  

Research on Data Failure Tolerance and Energy Efficiency in Multi-Event Clusters for Wireless Sensor Networks

作　　者：肖伟[1,2] 徐明[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073 [2]湖南师范大学数学与计算机学院,湖南长沙410081

出　　处：《计算机工程与科学》2012年第3期19-23,共5页Computer Engineering & Science

基　　金：国家自然科学基金资助项目(60773017)

摘　　要：基于无线传感器网络中事件簇容错和能效的要求,本文给出多事件簇数据容错模式MED-FT。该模式首先利用剩余能量和事件可信度的积值,给出分布式簇头节点的选举方法;然后,提出了多事件簇重叠区域下节点的处理策略,并且建立了事件簇的数据容错补偿机制。仿真实验表明,具有数据容错模式的多事件簇不仅能获得更长的网络生存周期,并且能获得更好的数据正确性和容错性能。A multi--event cluster data failure tolerance schema called MEDFT is proposed for wireless sensor networks, based on the tradeoff achieved by failure tolerance and energy efficiency in event clusters. For this schema, the paper firstly develops a distributed cluster-header election method by calculating the product of both node residual energy and node confident rate. Secondly, it puts forward a node disposal policy for the nodes deployed in the multi-event wrapped area, and finally, it establishes a compensation mechanism of multi-event cluster data failure tolerance. The simulation results demonstrate that the multi-event cluster with MEDFT can significantly increase the network survival period, and obtain event values with less errors and greater data failure tolerance, compared with other algorithms.

关 键 词：多事件簇 数据容错 能效 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]