Master Thesis: Adaptive 3GPP Narrowband Internet of Things (NB-IoT) Access and Transmission (m/f/d)

The DLR Institute of Communications and Navigation is dedicated to mission-oriented research in selected areas of communications and navigation.

Its work ranges from the theoretical foundations to the demonstration of new procedures and systems in a real environment and is embedded in DLR's Space, Aeronautics, Transport, Security and Digitalization programmes. ## What to expect In the Satellite Network department, the Information Technology and Theory group drives research, design, and development of protocols for non-terrestrial networks, including next-generation satellite communications and drone-based systems.

Leveraging expertise in 3GPP RAN solutions, semantic communications and Age of Information, and machine learning, the group is pushing the boundaries of current technologies and expanding their reach.

The group's innovative contributions aim to establish reliable, future-proof communication capabilities across the entire spectrum of non-terrestrial systems. ## Your tasks - Investigate narrowband IoT (NB-IoT) radio access network (RAN) access and transmission procedures compatible with 3GPP standards, operating within the context of moderate LEO satellite constellations. - The central objective is to design and evaluate 3GPP protocol adaptations that achieve high energy efficiency in the satellite access. - Develop a solid theoretical foundation covering LEO satellite systems and constellation design, as well as the fundamental principles of 3GPP access procedures. - Study of NB-IoT transmission under moderate LEO constellations, where the constellation geometry imposes specific constraints on the PHY and MAC layers that 3GPP procedures. - The practical work will be carried out in simulation environments, where NB-IoT transmission scenarios under moderate LEO constellations will be modeled and analyzed.

The resulting protocol solutions will be evaluated against key performance metrics. ## Your profile - Completed university-level courses in telecommunication engineering - Knowledge on satellite communications systems - Good programming skills are beneficial - Excellent academic records We look forward to getting to know you! If you have any questions about this position (Vacancy-ID 6659 ) please contact: ## Dr.

Andrea Munari Tel.: +49 (0) 8153 283639