Optimizing IoT Devices for GEO NB-NTN Hybrid Connectivity

This technical paper discusses the design and optimization of IoT devices for NarrowBand Non-terrestrial Networks (NB-NTN), a standardized 5G technology that connects remote IoT devices to ground-based cellular networks via satellites. The focus is on services that communicate over Geostationary Orbit (GEO) satellites. The paper outlines the integration of NB-NTN connectivity into traditional cellular networks, highlighting the benefits of hybrid connectivity and the differences in configuration between terrestrial NB-IoT and NB-NTN networks. It details the implications for device design, including considerations for communication delays, signal propagation, and antenna performance. The paper also categorizes satellite constellations based on their altitude and discusses the characteristics of Low Earth Orbit (LEO), Medium Earth Orbit (MEO), and GEO satellites. Furthermore, it presents emerging IoT use cases enabled by NB-NTN networks and outlines the implementation of these networks, including the role of satellites in maintaining radio links between IoT devices and ground stations.