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UAV Trajectory Design and Bandwidth Allocation for Coverage Maximization with Energy and Time Constraints

Jing, X; Masouros, C; (2020) UAV Trajectory Design and Bandwidth Allocation for Coverage Maximization with Energy and Time Constraints. In: Proceedings of the 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE: London, UK. Green open access

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Abstract

Unmanned Aerial Vehicle (UAV) networks have recently gained interest, owing to the mobility of UAVs that can be exploited to improve channel conditions and user coverage. In this paper, we consider a scenario where a rotary-wing UAV is dispatched for covering a maximum number of ground users by jointly optimizing the UAV trajectory and bandwidth allocation, under constraints of pre-determined maximal total flight time and on-board energy. The problem is difficult to solve since has nonconvex constraints and includes infinite variables over time. As such, we propose an iterative algorithm with guaranteed convergence by applying block coordinate descent and successive convex approximation techniques. We further exploit the path discretization to formulate the original problem into an optimization formulation with finite variables. We deploy a UAV circular trajectory as the benchmark. The numerical results show that the proposed algorithm significantly outperforms the benchmark scheme and the bandwidth allocation can improve UAV coverage compared with the UAV trajectory only with time partitioning.

Type: Proceedings paper
Title: UAV Trajectory Design and Bandwidth Allocation for Coverage Maximization with Energy and Time Constraints
Event: 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications
ISBN-13: 978-1-7281-4490-0
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/PIMRC48278.2020.9217266
Publisher version: https://doi.org/10.1109/PIMRC48278.2020.9217266
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: UAV communication, trajectory design, band-width allocation
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10113316
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