Abstract

Unmanned aerial vehicles (UAVs) are widely used in the areas where ground network infrastructure is inadequate (or crippled by accidents and disasters) to provide services for ground user equipments (UEs). However, the existing related works cannot serve ground UEs fairly. Due to the original intention of post-disaster emergency network construction with the highest goal of saving lives, fair access service for ground UEs is particularly important in this scenario. Therefore, we address this problem by jointly optimizing the number of service grids, the flight trajectory and the hovering position of a UAV. Firstly, an adaptive area division and consolidation (AADC) method is proposed to optimize the number of service grids of a UAV. Then, a new fair service policy is designed to plan the UAV flight trajectory. Finally, the hovering position of UAV is optimized in each service grid to improve service efficiency. The simulation results show that the proposed scheme both ensures fairness of services to ground UEs and improves system throughput.

Full Text
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