October 1-2, 2025
NTN Days Logo

Non-Terrestrial Networks
Bridging Space, Air, and Ground

LAAS, Toulouse, France
October 1 and 2, 2025
Program

Enjoy the event!

About NTN Days 2025

NTN Days 2025 brings together leading researchers, engineers, and industry stakeholders to explore the latest advancements in Non-Terrestrial Networks. This premier event will showcase cutting-edge research and innovations in LEO constellations, High-Altitude Platform Stations (HAPS), IoT connectivity, AI applications for space communications, and the integration of NTN technologies into 6G networks. Join us in Toulouse for two days of insightful discussions, networking, and collaboration at the forefront of space-terrestrial integration.

Research Excellence

Discover groundbreaking research from academic and industry leaders pushing the boundaries of NTN technologies.

Industry Collaboration

Connect with key players from aerospace, telecommunications, and technology sectors driving NTN innovation.

Networking Opportunities

Build valuable connections through dedicated networking sessions, workshops, and social events.

Topics of Interest

Explore the key themes and technological frontiers that will shape the future of Non-Terrestrial Networks

Space-Terrestrial Networking Integration

Seamless connectivity between satellite, aerial, and ground networks

LEO and HAPS Networks

Low Earth Orbit constellations and High-Altitude Platform Stations

6G NTN Technologies

Next-generation network architectures incorporating NTN

Delay/Disruption Tolerant Networking

Solutions for intermittent connectivity in space environments

Satellite IoT

Internet of Things applications and connectivity via satellite

AI and ML for NTN

Artificial Intelligence applications in space communications

Quantum Communications for NTN

Integration of quantum key distribution and secure protocols over NTNs.

Experimental NTN Platforms

Ground, airborne, and orbital experimental platforms.

NTN for Earth and Space Observation

Environmental monitoring, Earth observation, and tracking of space debris.

Submit & Register

Join our growing list of participants by submitting your talk or registering to attend. Engage with keynote speeches, expert panels, live demos, and vibrant poster sessions throughout the event.

Program
Talk Submission Deadline: Sep 7
Program Released: Sep 16
Poster Submission Deadline: Sep 24
Registration Deadline: Sep 24
NTN Days: Oct 1-2
Submit Talk Proposal Submit Poster Proposal

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Register

Venue & Location

Hosted at the renowned LAAS-CNRS in Toulouse, France — a hub of aerospace innovation and academic excellence.
Join us at the heart of Europe’s space ecosystem for two inspiring days.

7 Av. du Colonel Roche, 31400 Toulouse, France

LAAS-CNRS Logo

Program Schedule

Wed Oct 1st | Morning

08h45 Reception and Coffee
09h00 Welcome Words (Organisation, TéSA, GDR IASIS & RSD)

Session 1 – Perspectives & NTN Standards (09h15 - 10h45) Session Chair: Rahim Kacimi (IRIT)

09h15 (20 min) 6G NTN: The challenges for extending the terrestrial coverage Ioannis Xirouchakis (Ericsson France)
09h35 (20 min) 5G NTN and 6G, status and perspectives for NTN at the 3GPP Flavien Ronteix-Jacquet (Thales Alenia Space)
09h55 (20 min) IRIS2 – Overview and challenges Cédric Baudoin (Thales Alenia Space)
10h15 (20 min) IoT, the spearhead of 5G NTN Vincent Deslandes (Kinéis)
10h45 Coffee Break - Poster Session

Session 2 – Emerging IoT and NTN Technologies (11h15 - 12h45) Session Chair: Evelyne Akopyan (INSA Toulouse)

11h15 (20 min) Mioty® – the Best Technology for Satellite-Based IoT Applications Florian Leschka (Fraunhofer IIS)
11h35 (20 min) Increasing the throughput of Direct-to-Satellite Narrowband IoT networks Zheng Zhou (LAAS-CNRS)
11h55 (20 min) Achieving reduced latency and energy efficiency in Direct-to-Satellite LoRaWAN communications Florian Rolland (LAAS-CNRS)
12h15 (20 min) A Finer ALOHA-Based Analytical Model for LR-FHSS Performance Evaluation Lamdani Wilem (Université de Rennes | IRISA)
12h45 Lunch

Wed Oct 1st | Afternoon

Session 3 – Constellations, Swarms, and QoS (14h00 - 15h30) Session Chair: Oana Hotescu (ISAE-Supaero)

14h00 (20 min) Routing Strategies for Satellite Swarms in Space Missions Bastien Tauran (Viveris)
14h20 (20 min) Satellite swarm network Bernard Pontet (CNES)
14h40 (20 min) Delay and Buffer Bounds for QoS in Satellite Constellation Networks Jérôme Lacan (ISAE-SUPAERO)
15h00 (20 min) Comment fiabiliser des réseaux ad-hoc en essaim Evelyne Akopyan (LAAS-CNRS)
15h30 Coffee Break - Poster Session

Session 4 – NTN Experimentation and Integration (16h00 - 17h50) Session Chair: Olivier Alphand (UGA)

16h00 (20 min) NTNLab: An experimental platform to test and evaluate NTN and TN communications Alexis Falempin (IRT Saint Exupéry)
16h20 (20 min) Catalyzing Innovation: Bringing NTN to Automotive, IoT, and Beyond Arpad Iozsa (Lasting Software)
16h40 (20 min) Next Generation Network-assisted PNT Assurance Eustachio Roberto Matera (Thales Services Numériques)
17h00 (20 min) 6G Laboratory in Orbit Alexander Hofmann (Fraunhofer IIS)
17h20 (20 min) Axe espace LAAS : Télécommunication pour Nanosatellite Frederic Camps (LAAS-CNRS)
19h30 Dinner (Costs not covered – place TBD)

Thu Oct 2nd | Morning

Session 5 – IoT NTN Simulation and Optimization (09h00 - 10h30) Session Chair: Congduc Pham (Univ. Pau)

09h00 (20 min) Generating and Visualising Realistic Interplanetary Topologies with ESA’s Astrodynamics Software and IPN-v Lucas Poulhe & Alice Le Bihan (INSA Lyon)
09h20 (20 min) FLoRaSat 2: Simulating Cross-Linked Direct-to-Satellite IoT LEO Constellations Benoît Cougnet & Alexander Choquenaira (Inria)
09h40 (20 min) Adaptations, Optimizations, and Learning Approaches for Direct-to-Satellite IoT Diego Maldonado (INRIA / INSA Lyon)
10h00 (20 min) Delay-Tolerant Routing: A-SABR, the Adaptive Library for SABR Longrui Ma (Inria)
10h30 Coffee Break - Poster Session

Session 6 – Interplanetary and DTN Networks (11h00 - 11h50) Session Chair: Emmanuel Lavinal (IRIT)

11h00 (20 min) Unraveling Temporal Challenges in Space Networking Juan A. Fraire (Inria)
11h20 (20 min) Design and Implementation of a Native Socket Interface for the Bundle Protocol Sylvain Pierrot (Polytech)
11h50 (60 min) Roundtable discussion: “Innovation in NTN: Bridging Academia and Industry” Moderators: N. Accettura and P. Berthou (LAAS)
12h50 Closing Session and Buffet Lunch

Thu Oct 2nd | Afternoon

14h00 Side Meetings (Scheduled independently by participants)

Organizing Committee

Pascal Berthou and Nicola Accettura (LAAS)
Juan Fraire (Inria)
Charly Poulliat and Riadh Dhaou (Toulouse INP/IRIT)

Sponsors

GDR RSD GDR IASIS
TeSA
Toulouse INP IRIT LAAS-CNRS INRIA