Energy-Effective Data Gathering for UAV-Aided Wireless Sensor Networks

Bin Liu; Hongbo Zhu

doi:10.3390/s19112506

journal article Open Access May 31, 2019

Energy-Effective Data Gathering for UAV-Aided Wireless Sensor Networks

Bin Liu

Hongbo Zhu

Sensors Vol. 19 No. 11 pp. 2506 · MDPI AG

View at Publisher Save 10.3390/s19112506

Abstract

Unmanned aerial vehicles (UAVs) are capable of serving as a data collector for wireless sensor networks (WSNs). In this paper, we investigate an energy-effective data gathering approach in UAV-aided WSNs, where each sensor node (SN) dynamically chooses the transmission modes, i.e., (1) waiting, (2) conventional sink node transmission, (3) uploading to UAV, to transmit sensory data within a given time. By jointly considering the SN’s transmission policy and UAV trajectory optimization, we aim to minimize the transmission energy consumption of the SNs and ensure all sensory data completed collected within the given time. We take a two-step iterative approach and decouple the SN’s transmission design and UAV trajectory optimization process. First, we design the optimal SNs transmission mode policy with preplanned UAV trajectory. A dynamic programming (DP) algorithm is proposed to obtain the optimal transmission policy. Then, with the fixed transmission policy, we optimize the UAV’s trajectory from the preplanned trace with recursive random search (RRS) algorithm. Numerical results show that the proposed scheme achieves significant energy savings gain over the benchmark schemes.

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Details

Published: May 31, 2019
Vol/Issue: 19(11)
Pages: 2506
License: View

Authors

B

Bin Liu

Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

H

Hongbo Zhu

Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Funding

National Natural Science Foundation of China Award: 61871446, 61427801, 61701201

Natural Science Foundation of Jiangsu Province Award: BK20170758

China Scholarship Council Award: 201808320334

Postgraduate Research & Practice Innovation Program of Jiangsu Province Award: KYCX18 0893

Cite This Article

Bin Liu, Hongbo Zhu (2019). Energy-Effective Data Gathering for UAV-Aided Wireless Sensor Networks. Sensors, 19(11), 2506. https://doi.org/10.3390/s19112506

Energy-Effective Data Gathering for UAV-Aided Wireless Sensor Networks

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