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Keysight and KT SAT Achieve Industry-First Multi-Orbit NTN Handover Between GEO Satellite and Emulated LEO Link
SANTA ROSA, Calif., December 11, 2025--Live multi-orbit proof-of-concept shows session continuity from a geostationary earth orbit to an emulated low Earth orbit link.
About this update from Keysight Technologies Inc.
[{"type":"image","alt":"","displaySize":"","headline":null,"caption":"","credit":null,"className":"","disableSlideshowImg":false,"size":{"original":{"width":480,"height":270,"url":"https://media.zenfs.com/en/business-wire.com/780e06effe14c523dc7602d75544b85e"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/dj0Hu11loJJnlElXoaS4AQ--/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTU0MDtjZj13ZWJw/https://media.zenfs.com/en/business-wire.com/780e06effe14c523dc7602d75544b85e","width":480,"height":270}},"lazy":false},{"type":"text","content":"Live multi-orbit proof-of-concept shows session continuity from a geostationary earth orbit to an emulated low Earth orbit link, validating a core 6G capability","length":160,"tagName":"p"},{"type":"text","content":"SANTA ROSA, Calif., December 11, 2025--(BUSINESS WIRE)--Keysight Technologies, Inc. (NYSE: KEYS) today announced that in collaboration with KT SAT, it has demonstrated a successful non-terrestrial network (NTN) handover using the KOREASAT-6A satellite at KT SAT’s Kumsan Satellite Network Operation Center in Korea. In a controlled lab environment, the companies established the industry’s first1 NR-NTN multi-orbit handover between a commercial GEO satellite and an emulated LEO link. The demonstration was performed over a live Ku‑band GEO connection (DL ~12.3 GHz / UL ~14.4 GHz), marking a major milestone toward testing the newly standardized 3GPP Rel‑19 Ku‑band NTN spectrum. By incorporating Ku‑band operation into this multi-orbit mobility scenario, Keysight and KT SAT have validated NTN behaviors in a frequency range now central to emerging global standards and operator deployment strategies.","length":904,"tagName":"p"},{"type":"text","content":"As the industry moves toward 6G, integrating satellite and terrestrial networks is essential to deliver continuous coverage and resilient service in remote or disaster-affected areas. Satellite links, however, introduce longer delays, Doppler effects, and dynamic link conditions that complicate mobility and handover across space and ground domains.","length":350,"tagName":"p"},{"type":"text","content":"By moving beyond earlier demonstrations focused on single-orbit GEO connectivity, KT SAT and Keysight have shown how operators can evolve from point-to-point satellite links to continuous multi-orbit mobility, expanding KT SAT’s service capabilities toward resilient, always-on cove...