Multi-unmanned aerial vehicle mobile base station position deployment method

Abstract

The invention discloses a multi-unmanned aerial vehicle mobile base station position deployment method, which belongs to the field of air-ground integration. The method comprises the steps of firstly,randomly distributing K ground users and K unmanned aerial vehicle mobile base stations in a two-dimensional rectangular area, and establishing spatial position models of each unmanned aerial vehicleand all ground users; establishing a channel gain of a downlink communication link from each unmanned aerial vehicle to each ground user by utilizing the spatial position model to obtain a two-dimensional distance R and an elevation angle theta between each unmanned aerial vehicle and each user; rearranging the relationship between the channel gain and the two-dimensional distance R, and calculating the longest distance between the unmanned aerial vehicle and the user served by the unmanned aerial vehicle; constructing an objective function for minimizing the number of the unmanned aerial vehicles according to the longest distance; and finally, solving a target function under the condition that constraint conditions are met, wherein the number of users in each group is close to Nmax as much as possible. One unmanned aerial vehicle is deployed in each group, so that the interference of other users is minimized while the channel gain is maximized, and the method provided by the invention has relatively good robustness.

Description

technical field [0001] The invention belongs to the field of air-ground integration, and in particular relates to a location deployment method for multiple unmanned aerial vehicles (UAVs) mobile base stations. Background technique [0002] UAV, as a communication device, can realize rapid deployment in complex terrain environments due to its flexibility and low cost. It is not only suitable for emergency communication in various situations such as mountainous areas, open seas, and post-disaster situations, but can also be used in intelligence, surveillance, etc. Military fields such as target acquisition and reconnaissance, as well as civilian fields such as precision agriculture, aerial photography and urban low-altitude cruise, have broad development prospects and great research value. [0003] In traditional wireless communication systems, services to ground users are generally implemented by deploying ground base stations. However, with the advent of the 5G era, communi...

AI Technical Summary

Problems solved by technology

If the number of UAV base stations is insufficient or the location of the deployment is inappropriate, effective communication between some ground users and UAVs cannot be established; and if too many UAVs are set up to ensure the effectiveness of communication, it will involve cost issues

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