@ARTICLE{giordani2019tutorial, 
author={M. {Giordani} and M. {Polese} and A. {Roy} and D. {Castor} and M. {Zorzi}}, 
journal={IEEE Communications Surveys Tutorials}, 
title={A Tutorial on Beam Management for 3GPP NR at mmWave Frequencies}, 
year={2019}, 
volume={21}, 
number={1}, 
pages={173-196}, 
keywords={aircraft communication;cellular radio;directive antennas;mobility management (mobile radio);radiowave propagation;wireless channels;mmWave cellular network;severe free-space path loss;3GPP NR cellular network;robust control schemes;reactive;mobility management;beam tracking;handover;control layer procedures;precise alignment;wide area networks;highly directional antennas;base stations;atmospheric absorption;mmWave links;next-generation cellular mobile terminals;millimeter wave frequencies;beam management;Tutorials;3GPP;5G mobile communication;Array signal processing;Cellular networks;Long Term Evolution;Channel estimation;5G;NR;mmWave;beam management;initial access;tracking}, 
doi={10.1109/COMST.2018.2869411}, 
ISSN={2373-745X}, 
month={Firstquarter},}