Cyclical Multiple Access in UAV-Aided Communications: A Throughput-Delay Tradeoff
arXiv:1608.03180 · doi:10.1109/LWC.2016.2604306
Abstract
This letter studies a wireless system consisting of distributed ground terminals (GTs) communicating with an unmanned aerial vehicle (UAV) that serves as a mobile base station (BS). The UAV flies cyclically above the GTs at a fixed altitude, which results in a cyclical pattern of the strength of the UAV-GT channels. To exploit such periodic channel variations, we propose a new cyclical multiple access (CMA) scheme to schedule the communications between the UAV and GTs in a cyclical time-division manner based on the flying UAV's position. The time allocations to different GTs are optimized to maximize their minimum throughput. It is revealed that there is a fundamental tradeoff between throughput and access delay in the proposed CMA. Simulation results show significant throughput gains over the case of a static UAV BS in delay-tolerant applications.
5 pages, 3 figures, published in IEEE Wireless Communications Letters, https://ieeexplore.ieee.org/document/7556368/
References in corpus (2)
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