Field Experimental Trials for 5G Mobile Communication System Using 70 GHz-Band

This paper presents field experiments on the downlink throughput and SNR performance of a beam forming 5G millimeter wave radio access system with beam tracking in the following urban environments: a street canyon and a shopping mall. The majority of the area in the street canyon environment exhibits Line-Of-Sight (LOS) propagation while the shopping mall includes significant Non-LOS (NLOS) areas. The results show that the maximum throughput of over 2 Gbps is achieved in each of the respective environments. The Signal-to-Noise Ratio (SNR) and throughput performance versus distance from the AP is nearly identical for both environments in LOS conditions. Furthermore, if reflection paths exist, identical SNR and throughput performance is still achievable under these NLOS conditions. In addition, as an example use case of 5G enhanced mobile broadband, the world's first real time 8K video transmission trial using the system is also presented.