SK Telecom and Samsung Electronics have completed a trial to deliver a 5G connection based on 5G New Radio (NR) technology. The trial used 3.5GHz spectrum, virtualized core, radio and device based on 5G NR technology. The trial, which took place in Samsung's R&D center in Suwon, was comprised of Samsung's 5G virtualized core, virtualized RAN, Distributed Unit (baseband unit and radio unit) and test device that are based on the 3GPP NR standards elements established to date.
Source: https://www.telecompaper.com/news/sk-telecom-samsung-complete-35ghz-5g-nr-network-trial--1201917