REMUS – Resilient Multi-Orbit Satellite Connectivity (NR-DC)

Role: Co-Principal Investigator (SnT – SIGCOM / 6GSPACE Lab)
Funding: FNR CORE (in collaboration with SES)
Official Page: uni.lu/snt-en/research-projects/remus/

Executive Summary

REMUS is an FNR CORE research project conducted in collaboration with SES that designs and validates multi-orbit 3GPP New Radio Dual Connectivity (NR-DC) architectures. By combining a Geostationary (GEO) master node providing continuous umbrella coverage with Low Earth Orbit (LEO) secondary nodes delivering high-capacity spot beams, REMUS eliminates handover interruptions and maximizes end-to-end reliability.

Key Objectives & Contributions

• Multi-Orbit NR-DC Protocol Engineering: 3GPP NR-DC Configuration 1 with Packet Data Convergence Protocol (PDCP) traffic splitting and flow control across the Xn interface under large differential GEO–LEO propagation delays.
• Experimental Testbed Validation: Real-time OpenAirInterface (OAI) and hardware-in-the-loop channel emulation in the 6GSPACE Lab.

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