From Earth to Space: A First Deployment of 5G Core Network on Satellite

TL;DR

This paper reports the first deployment of a lightweight 5G core network on a real satellite, demonstrating its feasibility for satellite-terrestrial integrated networks with successful validation of core functions.

Contribution

It introduces the first real-world deployment of a satellite-based 5G core network, validating its operational feasibility and signaling correctness.

Findings

The 5G core network functions correctly onboard the satellite.

Registration and session setup procedures are successfully validated.

The deployment demonstrates potential for satellite-terrestrial 5G integration.

Abstract

Recent developments in the aerospace industry have led to a dramatic reduction in the manufacturing and launch costs of low Earth orbit satellites. The new trend enables the paradigm shift of satellite-terrestrial integrated networks with global coverage. In particular, the integration of 5G communication systems and satellites has the potential to restructure next-generation mobile networks. By leveraging the network function virtualization and network slicing, the orbital 5G core networks will facilitate the coordination and management of network functions in satellite-terrestrial integrated networks. We are the first to deploy a lightweight 5G core network on a real-world satellite to investigate its feasibility. We conducted experiments to validate the onboard 5G core network functions. The validated procedures include registration and session setup procedures. The results show that the 5G core network can function normally and generate correct signaling.