期刊名称：IAENG International Journal of Computer Science
印刷版ISSN：1819-656X
电子版ISSN：1819-9224
出版年度：2020
卷号：47
期号：2
语种：English
出版社：IAENG - International Association of Engineers
摘要：Wireless Sensor Networks (WSNs) consist of sensor nodes that have limited batteries, and are hard to replace due to their deployment in inaccessible areas. Hence, the goal of any WSN protocol is to implement energy efficient mechanisms that prolong the lifetime of WSNs. The existing face topology in WSNs can lead to high energy consumption due to all the nodes in the network being part of topology. In this paper, we propose a new protocol that introduces a new distributed energy-based face structure by putting redundant nodes to a sleep state for reduced energy consumption and prolonged lifetime of network. A distributed target tracking algorithm is designed to run on the new proposed face structure which tracks the target accurately while reducing the energy consumption of network. Additionally, a distributed fault tolerance algorithm is proposed which uses the sleeping redundant nodes in the network as backup nodes. When a node’s battery reaches a critical level it selects a nearby sleep node to replace itself to minimize the interruption in tracking of the target. The simulation results show that our proposed scheme achieves better energy efficiency and improves the lifetime of network while maintaining the performance of tracking. At high speeds, our work achieves significant improvement in accuracy of tracking.
