Field experimental evaluation of beamtracking and latency performance for 5G mmWave radio access in outdoor mobile environment

In the fifth generation mobile communications system (5G), it is expected to use millimeter wave (mmW) radio access with very wide frequency bandwidths of more than 1 GHz. To achieve good coverage and availability, high gain antennas or arrays are essential in order to compensate for the higher propagation loss experienced at mmW frequencies relative to current cellular bands. This paper presents the beamtracking performance and throughput performance of a 5G mmW Proof-of-Concept (PoC) system in field experiments conducted at up to 20 km/h vehicular speeds in outdoor line-of-sight (LOS) conditions. In addition, this paper recomposes the frame structure for low latency and evaluates latency performance in the vehicular experiments.