Fault tolerant scheme for data aggregation in event cluster over wireless sensor networks
Jianping Yu · Journal of Communications · 2010
A fault tolerant scheme for data aggregation based event clustering called EFSA was proposed,based on fault tolerant capability in data aggregation over wireless sensor networks.The event cluster was generated before the weighted average data were extracted as approximate event value by way of k-means algorithm.The confident rate of every node in the event cluster was computed and adjusted by iterative algorithm and the CR functioned as the weighted value in aggregating data and the indicator of data fault from nodes.Simulation results and analysis demonstrate that EFSA enhances correctness and reliability of data aggregation by weakening the influence from data failure.