03 April 2025

The integration of Narrowband Internet of Things (NB-IoT) with Non-Terrestrial Networks (NTN) is set to transform global connectivity, particularly in remote and underserved regions. By allowing IoT devices to communicate directly via satellites, this advancement ensures seamless coverage in areas where traditional terrestrial networks are either limited or entirely absent.

A significant breakthrough in this field occurred earlier this year when Mavenir and Terrestar Solutions Inc. successfully completed the industry’s first Voice over NB-IoT (VoNB) call in NTN mode. Conducted over a 3GPP-standardized NTN S-band spectrum, the call utilized Sony’s Altair ALT1250 module along with Mavenir’s Open RAN and Converged Packet Core technologies. This achievement not only demonstrated the feasibility of integrating voice services over NB-IoT in NTN environments but also paved the way for broader adoption of satellite-enabled IoT solutions.

The future application of NB-IoT in NTN mode spans multiple industries, each benefiting from the ability to maintain reliable, low-bandwidth communication over vast distances. In agriculture and environmental monitoring, farmers can deploy IoT sensors in remote fields to track soil moisture, crop health, and weather conditions, while environmental agencies can use similar technology for wildlife tracking and early detection of forest fires. With satellite connectivity, these sensors remain operational regardless of terrestrial network limitations. In the logistics sector, global supply chains can use NB-IoT to track goods in real-time, even when they move through regions with poor cellular coverage.

Disaster response and emergency services also stand to benefit greatly. Terrestrial networks often fail during natural disasters, leaving affected regions disconnected. With NB-IoT over NTNs, emergency responders can maintain critical communication, improving coordination and resource allocation when it is needed most. Similarly, the maritime and aviation industries can leverage satellite-based NB-IoT for telemetry, safety updates, and operational data transmission, enhancing overall safety and efficiency.

The convergence of NB-IoT with NTN represents a major leap forward in global connectivity, making the concept of a truly ubiquitous IoT a reality.