With the rapid development of 6G space–air–ground integrated communication networks, low Earth orbit (LEO) satellite constellations, leveraging their advantages of wide-area coverage and freedom from geographic constraints, have become key infrastructure for achieving global seamless connectivity. However, due to the relative motion among satellites in different orbits, inter-satellite links (ISLs) exhibit periodic dynamic on–off characteristics, among which a portion of the interruptions are predictable topological changes. Conventional Open Shortest Path First (OSPF) protocols compute shortest paths solely based on link distance, without considering link effective duration or bandwidth constraints, rendering them inadequate for adapting to the dynamic topological characteristics of satellite networks. Although fast reroute strategies can address sudden link failures, they consume substantial bandwidth resources and cannot provide protection for all nodes across the entire network. Therefore, how to proactively switch service paths before predictable link interruptions occur, so as to minimize service disruption and resource overhead, has become a core issue in ensuring service continuity in LEO satellite networks.

The U.S. National Science Foundation is investing $20 million in a two-year pilot led by UCF’s National Commercialization and Translation Institute to help NSF-funded small businesses overcome the “valley of death” and move late-stage deep technologies toward commercial success. The pilot will also evaluate approaches that could inform a scalable, long-term model.

Dr. Chi Kyung (CK) Kim of the Department of Neurology, Korea University Guro Hospital, and his research team (Dr. Kim Beom-joon of the Department of Neurology, Dr. Jun Sun-woo of the Department of Radiology, Seoul National University Bundang Hospital, and CMO Ryu Wi-sun of JLK) successfully conducted a multinational validation of AI technology that precisely detects large vessel occlusion (LVO) in acute stroke patients using only standard brain CT (non-contrast CT) without contrast agents.