(Telecompaper) SK Telecom announced that it has verified the performance of a 5G system in the 28 GHz band, in cooperation with Samsung. Tested in a network and outdoor environments, the Korean operator said this is one of the first cases of confirming the use of millimeter wave technology and will support further development of the services. SK announced last year that it was building a mmWave system with Samsung at its test bed in Bundang. The results of the tests will contribute to building a pilot 5G network for testing later this year.