NTN E2E Testbed :Release A - GEO NTN with OCUDU RAN and OAI UE Simulator
NTN Testbed Release A is the initial open-source software implementation of a 5G Non-Terrestrial Network testbed. This demonstration presents a fully functional 5G Standalone network utilizing a simulated 240 millisecond geostationary satellite link, employing OCUDU RAN, an OAI UE Simulator via ZMQ, and a 5G Core all hosted on a single machine without radio frequency hardware. Successful operation was verified through cell search, SIB19 acquisition, random access, RRC connection setup, NAS authentication, PDU session establishment, and end-to-end user plane IP traffic. The current configuration achieves approximately 510 millisecond round-trip latency and validates scheduler improvements for 3GPP Release 17 NTN compatibility; future releases will incorporate low Earth orbit satellite support with variable propagation delays and Doppler shifts.