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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Energy-Efficient UAV-Based Communication with Trajectory, Power, and Time Slot Allocation Optimization
verfasst von : Liping Deng, Hong Jiang, Jie Tian, He Xiao
Erschienen in: Communications, Signal Processing, and Systems
Verlag: Springer Singapore
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Abstract
The unmanned aerial vehicle (UAV) can not only build temporary communication network in the area of lack of ground facilities, but also easily expand the network capacity in hot areas, which has aroused significant research interests in recent years, especially in 5G network. In this paper, our goal is to minimize the total transmission power of UAV for specific tasks and achieve energy-efficient UAV-based communication by optimizing UAV trajectory, power, and time slot allocation. Firstly, a mixed integer non-convex optimization problem is constructed. Secondly, a time slot allocation algorithm based on channel gain and the amount of user task are proposed. Last, the problem is solved by alternating optimization and sequence convex approximation. Compared with the benchmark, the simulation results show that our policy can significantly reduce the total transmission power of UAV under the conditions of satisfying the UAV range, minimum user transmission rate, and user tasks.