Energy-efficient data collection in strip-based wireless sensor networks with optimal speed mobile data collectors

摘要

Energy consumption and network lifetime are the major concerns in wireless sensor networks (WSNs). In particular, WSNs use radios for communication, which are the major energy consumers. Due to frequent data forwarding process, the sensors near the sink especially in strip-based network deplete more energy, which causes energy hole problem and network lifetime reduction. In this work, as a first attempt, an energy efficient data collection process is proposed for strip-based WSNs to solve the aforementioned issues. More precisely, an optimal speed for the mobile data collector (MDC) with accurate data transmission range for each cluster is determined through an analytical approach. In addition, to reduce the energy usage of the sensor nodes, the transmission range of the sensors is adjusted automatically. With this proposed methodology, the network can avoid energy hole problem. Simulations are carried out to validate the proposed method, where it is shown that the network lifetime is significantly extended when compared to the existing methods. (C) 2019 Published by Elsevier B.V.