NTN Days 2026

This talk presents a research and innovation programme on non-terrestrial networks (NTN) built on three complementary components. The first is a set of advanced analytical tools for the design of efficient, high-performance NTN: recent theoretical results that characterize and predict the statistics of spectral efficiency in large-scale deployments, and that support the design of constellation architectures, routing strategies and critical performance metrics such as latency as a function of the constellation parameters and architecture. Ongoing work extends these methods to terrestrial/non-terrestrial integration, to sensing capabilities, to reconfigurable intelligent surfaces. The second component is interdisciplinary and regulatory: following the 2024 report of the Académie des sciences on large satellite constellations, NTN were selected as one of the three scientific priorities of the S7 process for the 2026 G7 summit, and the resulting joint statement of the G7 academies calls for an international, science-based regulatory framework ensuring the sustainable use of low Earth orbit. The third component is industrial and international cooperation, with partners such as Univity, Greenerwave and ONERA, and with universities in South Korea.

François Baccelli is a research director at Inria Paris and a visiting professor at Télécom Paris, where he co-founded the LINCS joint laboratory. He leads the ERC Advanced project NEMO on network mathematics. His work covers point processes, stochastic geometry and the dynamics of large networks, and he is the co-author of reference books on stochastic geometry and wireless networks. A member of the French Academy of Sciences since 2005, he received the Grand Prix France Télécom in 2002, the ACM SIGMETRICS Achievement Award and the IEEE Rice and Abraham prizes in 2014, and the Blackwell Prize in 2024.