"NEC aims to drive the global expansion of 5G by contributing to ecosystems in radio access networks via interoperability testing between multiple vendors' equipment that is compliant with O-RAN fronthaul specifications," SVP of NEC Corporation Nozomu Watanabe explained.
The units work across the 3.7GHz, 4.5GHz, and 28GHz spectrum bands, therefore covering both sub-6GHz and millimetre-wave (mmWave) 5G deployments.
"8K ultra-high-definition live video featuring a steam locomotive train was transmitted from a 5G base station installed along a railroad to a 5G mobile station located inside a running SL train and put on an 8K display," NEC said in January about the test conducted in November.
The test also streamed 4K content to passengers' 4G handsets via Wi-Fi from a 5G station on the train.
The NEC base stations used supported the 4.5GHz and 28GHz bands, with the test forming part of a Japanese government project to examine the outdoor use of 5G systems with average speeds of between 4Gbps and 8Gbps.
Samsung's mmWave radio frequency integrated circuits (RFICs) and digital/analog front end (DAFE) ASICs supports 28GHz and 39GHz bands, which can reduce 5G base station size, weight, and power consumption by 25 percent.