3D Trajectory Optimization Method for Energy Efficient Unmanned Aerial Vehicles for Auxiliary Communication Systems

Abstract

The invention discloses a three-dimensional trajectory optimization method for an energy-efficient unmanned aerial vehicle for assisting a communication system, which is used to plan a three-dimensional trajectory for a single unmanned aerial vehicle to complete data collection or dissemination of a communication node, so that the unmanned aerial vehicle can be significantly improved. Auxiliary communication efficiency. When the present invention optimizes the UAV's three-dimensional trajectory, it considers the dynamic equations of translation and rotation of the UAV, so that the optimized trajectory is more in line with the dynamic characteristics of the UAV; when the energy consumption model is modeled, There are not too many restrictions on the movement of UAVs, so the energy consumption model is suitable for energy consumption estimation of UAVs in two-dimensional plane movement, three-dimensional space movement, variable acceleration movement and other motion states; when optimizing modeling, the optimized energy results are directly To reflect the power consumption of the UAV, compared with the existing method that only considers effective energy, the present invention can consider the conversion efficiency of electric energy into effective energy, so the optimization result can better reflect the final energy consumption.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle power consumption, and in particular relates to a three-dimensional trajectory optimization method for an energy-efficient unmanned aerial vehicle for auxiliary communication systems. Background technique [0002] In the "Beyond 5G" (Beyond 5G) or 6G era, establishing and realizing the "air-sky-land-sea" full-dimensional network architecture is a research hotspot in the field of communications. As an air carrier, drones are expected to be one of the carriers of space-based networks. Since UAVs are bound by limited airborne energy, improving the energy utilization efficiency of UAVs is one of the key technologies to improve the possibility of practical application of UAV-assisted communication. In this context, how to accurately evaluate the energy consumption of UAVs and how to save energy to the maximum extent when UAVs complete communication tasks are important indicators for ev...

AI Technical Summary

Problems solved by technology

[0003] At present, in the application scenario of UAV as a dynamic air base station, the research on the energy model and three-dimensional scheduling of UAV-assisted communication is still insufficient.

[0004] In the literature "Energy-Efficient UAV Communication With Trajectory Optimization" and the literature "Energy Minimization for Wireless Communication With Rotary-Wing UAV", Y. Zeng et al. derived a fixed-wing unmanned aerial vehicle and a rotary-wing unmanned aerial vehicle based on the P=FV formula. However, it cannot be directly used to estimate the raw energy (such as fuel, electric energy) consumption of UAVs; secondly, their energy consumption model is derived based on the assumption that UAVs do planar motion, not Easy to extend to three-dimensional space motion

[0005] The literature "Optimal 3D-Trajectory Design and Resource Allocation for Solar-Powered UAV Communication Systems" Y.Sun et al. decomposed the energy consumption of the rotor UAV into the sum of the work done in the horizontal plane and the work done in the vertical direction, which was used to estimate the UAV in three dimensions. The movement of space consumes energy, but the power does not satisfy the principle of superposition, so the theoretical feasibility of this method is insufficient

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