5G NR is the first cellular standard that covers carrier frequencies above 6 GHz. Communication over mmWave mobile radio channel faces some challenges: It needs to be considered that the pathloss is proportional to the square of frequency. And due to the short wavelength, mobile radio channel becomes much more vulnerable to slight changes in the environment like motions of the device, reflections or blockage. The effect of higher pathloss for higher frequencies can be overcome by utilizing multiple TX antennas to direct energy and multiple RX antennas can be used to effectively increase aperture size. For that purpose, the task of beam management is to establish and maintain a beam pair consisting of a transmit beam and a receive beam.