NTN E2E Testbed : Release B - LEO NTN A 5G Connection Through a Moving Satellite
This demonstration establishes a complete 5G Standalone connection over a simulated low-Earth-orbit satellite link using software components without requiring radio hardware or actual satellite access. The testbed models a satellite orbit at 600 km with a velocity of 7.5 km/s, incorporating propagation delay and Doppler shift effects applied to the baseband sample stream. A full pass is simulated, showcasing cell search, random access, RRC setup, NAS registration, and user traffic transmission. The implementation utilizes production-ready OCUDU RAN and OAI UE software, extending previous work that validated a similar testbed for geostationary orbit. Orbit parameters are shared between the network and channel models to ensure synchronized simulation of link behavior.