Completion Time Minimization in Wireless-Powered UAV-Assisted Data Collection System

In unmanned aerial vehicle (UAV)-assisted data collection system, UAVs can be deployed to charge ground terminals (GTs) via wireless power transfer (WPT) and collect data from them via wireless information transmission (WIT). In this letter, we aim to minimize the time required by a UAV via jointly...

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Bibliographic Details
Published in:IEEE communications letters 2021-06, Vol.25 (6), p.1954-1958
Main Authors: Wang, Zhen, Zhang, Guopeng, Wang, Qiu, Wang, Kezhi, Yang, Kun
Format: Article
Language:English
Subjects:
Completion time
Convexity
Data collection
data collection system
Data communication
Energy consumption
Iterative algorithms
Mixed integer
Nonlinear programming
Rician channels
Trajectory
Trajectory optimization
UAV
Unmanned aerial vehicles
Wireless power transfer
Wireless power transmission
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Summary:In unmanned aerial vehicle (UAV)-assisted data collection system, UAVs can be deployed to charge ground terminals (GTs) via wireless power transfer (WPT) and collect data from them via wireless information transmission (WIT). In this letter, we aim to minimize the time required by a UAV via jointly optimizing the trajectory of the UAV and the transmission scheduling for all the GTs. This problem is formulated as a mixed integer nonlinear programming (MINLP) which are difficult to address in general. To this end, we develop an iterative algorithm based on binary search and successive convex optimization (SCO) to solve it. The simulation shows that our proposed solution outperforms the benchmark algorithms.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2021.3057069