An Effective and Efficient Method for Handling Transmission Failures in Sensor Networks

Abstract

The suppression scheme is a solution for limited energy constraints in sensor networks. Temporal suppression, spatial suppression and spatio-temporal suppression are proposed to reduce energy consumption by transmitting data only if a certain condition is violated. Among these suppression schemes, spatio-temporal suppression is the most energy efficient than others because it combines the advantages of temporal suppression and spatial suppression. A critical problem of these suppression schemes is the transmission failure because every nonreport is considered as a suppression. This causes the accuracy problem of query results. In this paper, we propose an effective and efficient method for handling transmission failures in the spatio-temporal suppression scheme. In order to detect transmission failures, we devise an energy efficient method using Bloom Filter. We also devise a novel method for recovering failed transmissions which can save energy consumption and recover failed values more accurately. The experimental evaluation shows the effectiveness of our approach. On the average, the energy consumption of our approach is about 39% less than that of a recent approach and the accuracy of the query results of our approach is about 55% more accurate than that of the recent approach in terms of the error reduction.