O-RAN based Non-Terrestrial Networks: Trends and Challenges

Campana, Riccardo; Amatetti, Carla; Vanelli‐Coralli, Alessandro

doi:10.1109/eucnc/6gsummit58263.2023.10188308

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…The MLSS testbed is illustrated in Figure 10. Two different locations, one in Fraunhofer FOKUS in Berlin and one in a controlled location in Spain, were deployed, emulating an endto-end distributed system like previous testbeds for 5G with GEO backhaul [48]. To be able to control the end-to-end environment and to execute the measurements the Open5Core benchmarking tool was installed on the Berlin premises emulating the UE and the gNB.…”

Section: Testbed Activitiesmentioning

confidence: 99%

“…While the first MLSS implementations have included only two vendor-dependent satellite layers, such as GEO and LEO, an apparent development in MLSS architectural design is towards being able to handle more complicated structures including VLEO, highly-elliptical orbit (HEO), high-altitude platform (HAP), and lowaltitude platform (LAP). The SDN and open radio access network (O-RAN) concepts, which have been considered for the terrestrial domain for a while, can be expected to be incorporated into the space segment in the future as well, to assist in the flexible and demand-based vendor-independent multilayer architectural designs [48]. Similarly, the advanced design of more fluid core networks oriented towards the 6G requirements [49,50] would provide an additional benefit to the NTN deployments in terms of space capabilities and performance.…”

Section: Future Research Directions and Mlss Technology Roadmapmentioning

confidence: 99%

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Multi-Layered Satellite Communications Systems for Ultra-High Availability and Resilience

Höyhtyä,

Anttonen,

Majanen

et al. 2024

Electronics

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Satellite communications systems provide a means to connect people and devices in hard-to-reach locations. Traditional geostationary orbit (GEO) satellite systems and low Earth orbit (LEO) constellations, having their own strengths and weaknesses, have been used as separate systems serving different markets and customers. In this article, we analyze how satellite systems in different orbits could be integrated together and used as a multi-layer satellite system (MLSS) to improve communication services. The optimization concerns combining the strengths of different layers that include a larger coverage area as one moves up by each layer of altitude and a shorter delay as one moves down by each layer of altitude. We review the current literature and market estimates and use the information to provide a thorough assessment of the economic, regulatory, and technological enablers of the MLSS. We define the MLSS concept and the architecture and describe our testbed and the simulation tools used as a comprehensive engineering proof-of-concept. The validation results confirm that the MLSS approach can intelligently exploit the smaller jitter of GEO and shorter delay of LEO connections, and it can increase the availability and resilience of communication services. As a main conclusion, we can say that multi-layered networks and the integration of satellite and terrestrial segments seem very promising candidates for future 6G systems.

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Section: Testbed Activitiesmentioning

confidence: 99%