Complete Targets Coverage in Wireless Sensor Networks with Energy Transfer

Authors

Changlin Yang, Zhongyuan University of TechnologyFollow
Kwan-Wu Chin, University of WollongongFollow
Ying Liu, University of WollongongFollow
Junbao Zhang, Zhongyuan University of Technology
Jizhao Liu, Zhongyuan University of Technology

RIS ID

118039

Publication Details

C. Yang, K. Chin, Y. Liu, J. Zhang & J. Liu, "Complete Targets Coverage in Wireless Sensor Networks with Energy Transfer," IEEE Communications Letters, vol. 22, (2) pp. 396-399, 2018.

Abstract

This paper considers energy harvesting sensor nodes monitoring multiple fixed targets. The goal is to monitor these targets for the longest time period. A key challenge, however, is that sensor nodes have varying energy harvesting rates, meaning the coverage lifetime of targets is limited by sensor nodes with low energy. To this end, we consider energy sharing between sensor nodes. We model the problem as a Mixed Integer Linear Program (MILP). Advantageously, our MILP models non-linear energy conversion rates. We also outline a heuristic for largescale networks. Our results show energy sharing and non-linear energy conversion rates prolong coverage lifetime. Lastly, our heuristic achieves 90 & #x0025; of the optimal coverage lifetime.