Performance Evaluation of 5G mmWave Deployment in a Live Network Environment

The emergence of millimeter-wave (mmWave) technology has transformed the design of 5G networks by enabling extremely high data rates and ultra-low latency through the use of wide bandwidths in the 24–40 GHz range. This paper presents a detailed study and field trial evaluation of mmWave communications using 28 GHz 5G New Radio (NR) technology under Non-Standalone (NSA) mode. The work combines theoretical modeling of propagation and link-budget parameters with practical field measurements using commercial 5G equipment. The results demonstrate that mmWave frequencies can reliably achieve multi-gigabit throughput under Line-of-Sight (LoS) conditions within a 200-meter range, validating the viability of mmWave deployments in dense urban environments. Observed limitations, including blockage sensitivity and beam tracking, are discussed with proposed mitigation techniques for future commercial networks.