Abstract
Using unmanned aerial vehicle as movable base stations is a promising approach to enhance network coverage. Moreover, movable unmanned aerial vehicle–base stations can dynamically move to the target devices to expand the communication range as relays in the scenario of the Internet of things. In this article, we consider a communication system with movable unmanned aerial vehicle–base stations in millimeter-Wave. The movable unmanned aerial vehicle–base stations are equipped with antennas and multiple sensors for channel tracking. The cylindrical array antenna is mounted on the movable unmanned aerial vehicle–movable base stations, making the beam omnidirectional. Furthermore, the attitude estimation method using the deep neural network can replace the traditional attitude estimation method. The estimated unmanned aerial vehicle attitude information is combined with beamforming technology to realize a reliable communication link. Simulation experiments have been performed, and the results have verified the effectiveness of the proposed method.
Highlights
With rapid increase in the use of smart phones and extensively exchanging information within Internet of things (IoT), the traffic has increased significantly in the mobile wireless network
The remainder of the article is organized as follows: ‘‘unmanned aerial vehicles (UAVs) attitude estimation’’ section presents the principle of the traditional UAV attitude calculation and the improved method based on deep neural network. ‘‘Beamforming’’ section introduces the mmWave MIMO system as well as its implementation in 5G UAV-base stations (BS)
In order to counteract the deviation of the beam pointing caused by the attitude variation of the BS carrier (UAV), we propose a method by predicting the UAV’s three attitude angles in advance; the beam is kept pointing toward the terminal by changing the two angles u0 and f0
Summary
With rapid increase in the use of smart phones and extensively exchanging information within Internet of things (IoT), the traffic has increased significantly in the mobile wireless network. Zhao et al.[23] propose a communication channel estimation method based on UAV attitude information fusion. A method of UAV attitude prediction based on deep neural network is proposed, for the UAV attitude estimation and MIMO techniques.
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