Unmanned aerial vehicle cluster deployment method based on ground cellular system

Abstract

The invention provides an unmanned aerial vehicle cluster deployment method based on a ground cellular system, and the method comprises the steps: determining the position and height of a user, the position of a base station, the initial number and flight height of an unmanned aerial vehicle, and the road position of a mooring unmanned aerial vehicle in a region to be deployed; taking the position constraint of the tethered unmanned aerial vehicle, the maximum communication radius constraint between the tethered unmanned aerial vehicle and the base station, the maximum communication radius constraint between the tethered unmanned aerial vehicle and the non-tethered unmanned aerial vehicle and the maximum communication radius constraint between the unmanned aerial vehicle and the user as constraint conditions; taking the maximization of the number of users capable of being covered as a first objective function, and solving the maximum number of users capable of being covered by adopting a continuous convex approximation algorithm, a linear relaxation algorithm and a weighted l1 algorithm; and taking minimization of the number of unmanned aerial vehicles required by the maximum user number of coverage as a second objective function, and adopting a continuous convex approximation algorithm and a dichotomy to obtain the minimum number and position of unmanned aerial vehicles required to be deployed by the user with the maximum coverage, so that large-range coverage under the condition of high system capacity can be realized.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle communication and resource management, in particular to a method for deploying an unmanned aerial vehicle cluster based on a ground cellular system. Background technique [0002] In recent years, with the advancement of the information age, ground mobile network traffic has grown rapidly, especially in some highly populated areas, ground base station equipment needs to bear a huge load, network congestion often occurs, resulting in ground users unable to get Normal web service. In addition, ground base stations are often directly damaged due to force majeure such as natural disasters, and the base stations cannot be restored to use in a short period of time, which will also affect the normal communication of ground users to a certain extent. [0003] In view of the above problems, using unmanned aerial vehicles (Unmanned Aerial Vehicle, UAV) as a relay is a good solution. UAV is ...

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a UAV cluster deployment method based on a ground cellular system to solve the deployment problem of the UAV cluster under the condition of large ground base station load, limited coverage and limited UAV energy

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