Unmanned aerial vehicle cooperative communication method for joint optimization of power and three-dimensional trajectory

Abstract

The invention provides an unmanned aerial vehicle cooperative communication method for joint optimization of power and three-dimensional trajectory. The method comprises the steps: building an unmanned aerial vehicle to ground communication system, the unmanned aerial vehicle to ground communication system comprises an unmanned aerial vehicle B, an unmanned aerial vehicle J, a ground user and an eavesdropper, the unmanned aerial vehicle B sends information to the ground user, and the unmanned aerial vehicle J sends an interference signal to the ground eavesdropper; respectively defining coordinates of the unmanned aerial vehicle B, the unmanned aerial vehicle J, a ground user and an eavesdropper on a three-dimensional Cartesian coordinate by using discretized time slots; determining an objective function (P1) of an optimization problem, and maximizing the minimum average secure transmission rate by performing joint optimization on the tracks and power of the unmanned aerial vehicle B and the unmanned aerial vehicle J in all time periods; and solving the target function (P1) to obtain an optimal solution. According to the method, the tracks and the transmitting power of the unmanned aerial vehicle J and the unmanned aerial vehicle B are jointly optimized, the average secure transmission rate of all ground users is maximized, and the physical layer security of an unmanned aerial vehicle communication system is greatly improved.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle cooperative communication method for joint optimization of power and three-dimensional trajectory. Background technique [0002] With the rapid development of UAV (Unmanned Aerial Vehicle, UAV) communication technology, UAV can serve as an air base station to provide services for ground users, which solves the problem that traditional fixed base stations cannot be deployed quickly and flexibly in a short period of time, effectively Reduce the cost required for fixed communication equipment. The mobility of drones brings a new degree of freedom to the design of communication networks, which can be applied to changing scenarios. However, the communication system between drones and ground users transmits wireless information through the establishment of line-of-sight links, and the opening of wireless channels Sexuality makes the UAV comm...

AI Technical Summary

Problems solved by technology

The mobility of drones brings a new degree of freedom to the design of communication networks, which can be applied to changing scenarios. However, the communication system between drones and ground users transmits wireless information through the establishment of line-of-sight links, and the opening of wireless channels Sexuality makes the UAV communication system more vulnerable to the threat of eavesdropping, which brings severe challenges to the safe transmission of UAV communication and other issues.

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