Researchers, testing firms, and Asia’s largest geostationary (GEO) satellite operator, SKY Perfect JSAT, have tested a cross-country 5G non-terrestrial network (NTN) between Singapore and Japan – marking the beginning of the road for GEO providers in the 5G NTN field. At a live demonstration at the World Expo 2025 in Osaka, Japan, a 5G signal was transmitted from a UE in Singapore via a satellite antenna to a GEO satellite operated by JSAT, then forwarded to a ground station in Japan. This was then connected to a 5G base station and 5G core network emulator (presumably provided by one of the testing firms) to achieve the first end-to-end NTN between Japan and Singapore. “The live demonstration successfully showed that an…