Satellite and terrestrial multi-connectivity for 5G: making spectrum sharing possible

Nicolas Cassiau (1) , Gosan Noh (2) , Stephan Jaeckel (3) , Leszek Raschkowski (3) , Jean-Michel Houssin (4) , Laurent Combelles (4) , Marjorie Thary (4) , Junhyeong Kim (2) , Jean-Baptiste Doré (1) , Marc Laugeois (1)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 ETRI - Electronics and Telecommunications Research Institute [DaeJeon]
3 Fraunhofer HHI - Fraunhofer Institute for Telecommunications - Heinrich Hertz Institute
4 TAS - Thales Alenia Space [Toulouse]

This paper reports the first results of the 5G-ALLSTAR project [1] aiming at providing solutions and enablers for spectrum sharing in a 5G cellular and satellite multi-connectivity context. First, we present an exhaustive study of the frequency bands eligible for these systems in the short and medium term. A ray-tracing based and a geometry-based stochastic channel models developed in the project are then described. These models can be used to simulate systems involving terrestrial and non-terrestrial networks. We then describe three different ways investigated in the project for managing interference: signal processing (hardware implementation of a 5G New Radio compatible physical layer), beamforming (steering and switching beams in order to avoid the interference while preserving the spectral efficiency) and radio resource management (tool designed for joint optimization of satellite and terrestrial resource sharing).

Domaines: Traitement du signal et de l'image [eess.SP]; Autre

Nicolas Cassiau, Gosan Noh, Stephan Jaeckel, Leszek Raschkowski, Jean-Michel Houssin, et al.. Satellite and terrestrial multi-connectivity for 5G: making spectrum sharing possible. IEEE Wireless Communications and Networking Conference (WCNC 2020), May 2020, Séoul, South Korea. ⟨hal-02864733⟩