Abstract: Massive beamforming is one of the key technologies to meet the requirements from the three deployment scenarios of 5G: enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra reliable and low latency communications (URLLC). Based on the latest standardization progress of 5GNRin 3GPP, this paper introduces and analyzes the standardized massive beamforming in NR, including transmission schemes, CSI acquisition mechanism, reference signal design and beam management procedures. This paper also provides the application and usages of massive beamforming in the three scenarios.

Key words: 5GNR, massive beamforming, channel state information (CSI), reference signal (RS), beammanagement