ITRI mmWave radio access technology development

The exceptional growth in areas of mobile subscriber, wireless network access, mobile services and applications shows evidences of the continuous expansion of cellular communication. The 5G (fifth generation) mobile communication standard, the formulation of which is still in incubation, aims to solve the avalanche of traffic volume. One of the promising candidates is to adopt the millimeter wave frequency band to get the wide available width. To overcome the unfavorable channel properties of transmission in millimeter wave frequency band, i.e. high path loss, propagation loss, rain fading…,e.t.c., the beam-forming, beam tracking together with phased array antenna are the most crucial key technologies, which therefore induce some other technology challenges. In this paper, we developed an integrated 38GHz 5G millimeter-wave radio access experiment platform which adopts the hybrid beam-forming architecture designed with a 8-by-8 64-antenna phased antenna array for eNB and a 1-by-8 8-antenna phased antenna array for UE to implement the beam-forming technology, also a beam-tracking algorithm is developed to support the mobile transmission up to 30Km/hr. To be specific, this highly flexible and scalable millimeter platform is developed to achieve a data rate higher than 1Gbps data rate in millimeter wave band supporting up to 30Km/hr mobile transmission in the outdoor scenario over 100m coverage.