Herndon, Va. and London, United Kingdom, Oct 21, 2020: Avanti Communications, the leading Ka-band high throughput satellite operator across Europe, Middle East and Africa and ST Engineering iDirect, the leading satellite ground infrastructure company, have played integral roles in the completion of the successful integration of a commercially available 5G core network into a live satellite network. This marks a major milestone for the initiative and the industry, as it marks the first time a live satellite network has been managed and operated using a standard and unmodified commercially available 5G core network.
The Sat5G project involves the integration of satellite into 3GPP 5G testbed networks. Using the testbeds, several 5G use case demonstrations over live satellite links were performed, with the satellite links performing several different tasks. The project undertook research and demonstrated the benefit of satellite technology in delivering content to the network edge; providing backhaul to cellular base-stations, improving broadband experience to premises, and providing connectivity to aircraft and moving platforms through emulated GEO and over-the-air MEO satellite connectivity.
Two key technological advances in 5G are the virtualization of network functions (VNFs) and the use of end-to-end slices providing network services with specified quality of service (QoS). The SaT5G project successfully designed and deployed several satellite-specific VNFs on OpenStack and Kubernetes, and developed an integrated architecture which allows satellite links to carry network slices seamlessly.
Utilising Avanti’s GEO HYLAS-4 live satellite capacity, ST Engineering iDirect’s 5G-enabled Intelligent Gateway (iGW) satellite ground infrastructure provided the satellite connectivity for the University of Surrey (5GIC) 5G testbed. The integrated 5G Non-Terrestrial-Network (NTN), consisted of a remote terminal installed at 5GIC, which connected over the live satellite to the 5G-enabled ST Engineering iDirect hub installed at Avanti’s ground earth station at Goonhilly. The satellite connection continues to use the native satellite radio at the physical layer. The 5G-enabled Intelligent Hub gateway included physical network functions for terminating the native satellite connection along with a satellite RAN and a standard, and unmodified, commercially available 5G core network, both of which were virtualized.
The 5G -enabled satellite hub connected to the 5GIC testbed using a dedicated L2 connection, which allowed deployment of the satellite connection endpoint within the 5GIC core network. The satellite connection provided an end-to-end L2 over satellite connection between the 5GIC 5G testbed mobile core network and the remote mobile network 5G UE terminals, which are connected via 5G small cells. All the 5GIC testbed use cases used the integrated 5G NTN system for live satellite connectivity to demonstrate the end-to-end use cases.