A UAV data and energy transmission method assisted by intelligent reflective surfaces

Abstract

The invention relates to a UAV data and energy transmission method assisted by an intelligent reflective surface, and relates to the technical field of UAV communication, including attaching the intelligent reflective surface to a building, and the UAV communicates with the line-of-sight link through the intelligent reflective surface The ground equipment whose road is blocked is used for data and energy transmission; the uplink data transmission model and downlink energy transmission model between the UAV and the ground equipment are established, and the optimization problem of maximizing the energy collected by the ground equipment is set according to the data transmission requirements of the ground equipment; The optimization problem is decomposed into three sub-problems by using block coordinate descent and continuous convex optimization method, and each sub-problem is solved separately, and finally the final solution is obtained by iterative algorithm. The scheduling scheme of the UAV and the ground equipment assisted by the intelligent reflective surface of the present invention provides an optimized time slot allocation scheme for data and energy transmission, and increases the collected energy under the requirement of ensuring the data transmission of the ground equipment .

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle communication, in particular to a data and energy transmission method of an unmanned aerial vehicle assisted by an intelligent reflective surface. Background technique [0002] UAVs are playing an increasingly important role in modern wireless networks. As an airborne wireless communication platform, UAVs can serve as air base stations, data collection platforms, mobile relays, and mobile edge computing clouds. Unlike traditional base stations, due to its high mobility and operational flexibility, UAVs can avoid obstacles by flying to higher places and establish line-of-sight transmission links with communication nodes. By jointly optimizing the UAV's flight trajectory and resource allocation, the system performance of existing communication systems can be greatly improved. [0003] However, due to the randomness and unpredictability of the wireless propagation environment, the qu...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a UAV data and energy transmission method assisted by an intelligent reflective surface, which can solve the signal quality caused when the UAV and ground equipment line-of-sight link is blocked Poor problem, at the same time, the UAV can charge the ground equipment, which solves the problem of insufficient energy supply of the equipment

Images