Optimal Offloading for Interdependent Tasks of Unmanned Aerial Vehicle in Edge Server aided Low Power Wide-Area Networks

Konferenz: WSA 2020 - 24th International ITG Workshop on Smart Antennas
18.02.2020 - 20.02.2020 in Hamburg, Germany

Tagungsband: ITG-Fb. 291: WSA 2020

Seiten: 6Sprache: EnglischTyp: PDF

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He, Qinwei (Global Energy Interconnection Research Institute Europe GmbH, 10623 Berlin, Germany)
Zhai, Xuebing; An, Chunyan (Global Energy Interconnection Research Institute Co., Ltd., 102209 Beijing, China)
Yang, Tianyu; Hu, Yulin (Institute for Theoretical Information Technology, RWTH Aachen University, 52074 Aachen, Germany)

In this work we study the optimal offloading problem for an unmanned aerial vehicle (UAV) connected to edge servers aided low power wide-area network (LPWAN). The UAV, served as a device, a gateway or a base station in the LPWAN, has some computation-intensive tasks with interdependence to be accomplished during its given path with fixed start and end points. By allowing the offloading to edge servers in the LPWAN, we aim at minimizing the total processing time of all tasks by jointly designing its trajectory and offloading decision. An analytically optimal trajectory is proposed and the optimal offloading strategy is obtained by solving an integer programming. Numerical results show that the proposed algorithm significantly reduces the total processing time compared to the other benchmarks.