Korean operator KT, working with Qualcomm and Samsung, has announced the completion of multivendor 5G NR interoperability testing, supporting the recently completed 3GPP Release 15 Non-Standalone (NSA) specifications. The live, over-the-air test demonstrated data connections operating in 3.5 GHz and 28 GHz bands, using pre-commercial 5G NR base stations from Samsung and user equipment prototypes from Qualcomm. “KT has worked closely with Samsung and Qualcomm Technologies on testing innovative mobile technologies,” said Seo, Chang-Seok, head of KT’s network strategy unit. “KT believes that this 5G NR trial will pave the way to a successful launch of 5G NR networks and mobile devices, which will mark another technology breakthrough beyond the first broad-scale 5G trial services at the 2018 PyeongChang Winter…