Macro station user distribution method for unmanned aerial vehicle auxiliary cellular network

Abstract

In order to solve the problems that a B5G / 6G network faces higher coverage and larger capacity requirements and an existing ground cellular network is difficult to guarantee the performance of edge users, the embodiment of the invention provides a macro station user distribution scheme for an unmanned aerial vehicle auxiliary cellular network, so that dynamic coverage is provided for the edge users. The method is beneficial to high channel gain brought by a large-probability line-of-sight link of an unmanned aerial vehicle base station; according to the scheme, one or more unmanned aerial vehicles take the ground macro base station as the center and do circular motion in the clockwise or anticlockwise direction, and a high data transmission rate is provided for macro cell users by utilizing the sight distance link and the antenna gain. By adjusting parameters such as the movement track radius, the flight height, the flight speed and the transmitting power of the unmanned aerial vehicle, the coverage range of the unmanned aerial vehicle is dynamically adjusted, and therefore network performance maximization is achieved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a macro station user distribution method for a UAV-assisted cellular network in the fifth generation of mobile communication (Beyond 5thGeneration, B5G) and the sixth generation of mobile communication (6th Generation, 6G) in the future. Background technique [0002] B5G / 6G networks will face huge challenges from user needs, including higher coverage, larger capacity, higher spectral efficiency, and lower overhead. In the existing terrestrial cellular network, users located at the edge of the terrestrial macrocell are far away from the base station, and the received signal strength is weak. It is difficult for the existing terrestrial cellular network to guarantee the coverage and capacity performance of edge users. [0003] Benefiting from the high channel gain brought by the high probability Line-of-Sight (LoS) link of the UAV (Unmanned Aerial Vehicle...

AI Technical Summary

Problems solved by technology

[0004] In the UAV-assisted cellular network, the use of UAV to offload macro station users still faces the following challenges: 1) The design of UAV deployment parameters, the design of UAV deployment height, flight speed and moving trajectory will affect the size of the network capacity; 2 ) The wireless backhaul link of UAV, due to the high dynamic mobility of UAV, the backhaul of UAV base station can only use non-ideal wireless backhaul link, how to return the mobile UAV base station to the core network needs further design; 3) High dynamic mobility The problem of frequent switching of users due to permanent UAV, the mobility of UAV makes users switch back and forth between UAV and ground macro base station, and the continuity of UAV service cannot be guaranteed

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