What Is nRF9151 NB-IoT NTN?

The Nordic Semiconductor nRF9151 is a compact, low-power System-in-Package designed for cellular IoT and private-network applications. It combines an application processor, cellular modem, RF front end, power management, security capabilities and GNSS support in one module.

Its connectivity options include:

  • LTE-M for mobile, lower-latency cellular IoT applications
  • NB-IoT for power-efficient, small-payload communication
  • 3GPP Release 17 NB-IoT NTN for direct-to-satellite communication
  • GNSS for GPS-based positioning and tracking
  • DECT NR+ for applicable private wireless networks

Nordic introduced NB-IoT NTN support through nRF9151 modem firmware and provides the nRF9151 SMA Development Kit for terrestrial, satellite and RF evaluation. The module has also received certification for Skylo's standards-based NTN, creating a practical route toward products capable of operating across supported terrestrial and satellite networks. Nordic confirms that the module supports LTE-M, NB-IoT, GNSS and Release 17 NB-IoT NTN.

Why Use nRF9151 for Satellite IoT Products?

The nRF9151 is suitable for devices that must operate for long periods, send relatively small amounts of data and remain reachable outside conventional network coverage.

Standardized Satellite Communication

NB-IoT NTN is in accordance with 3GPP Release 17. By following cellular standards, one is not fully subject to proprietary satellite modem technology.

NB-IoT NTN is in accordance with 3GPP Release 17. By following cellular standards, one is not fully subject to proprietary satellite modem technology. Therefore, this allows product teams to work with cellular IoT operation cycles, SIM card provisioning, as well as rules of using IP-based applications.

Terrestrial and Satellite Connectivity

Products can be architected to prefer LTE-M or terrestrial NB-IoT and use NTN when the selected subscription, network and regional coverage permit it.

Products can be architected to prefer LTE-M or terrestrial NB-IoT and use NTN when the selected subscription, network and regional coverage permit it. The exact transition behaviour must be validated with the intended operator. It should never be assumed from a coverage diagram alone.

Integrated GNSS

GNSS makes the platform valuable for mobile assets, livestock, containers, machinery and remote-worker devices.

GNSS makes the platform valuable for mobile assets, livestock, containers, machinery and remote-worker devices. Firmware can control fix frequency, assistance data, movement-triggered sampling and location reporting to balance tracking accuracy against battery consumption.

Low-Power Product Architecture

Battery life depends on the complete design rather than the module alone.

Battery life depends on the complete design rather than the module alone. Elements affecting performance while in the field include network scanning time, availability of satellite signals, amount of data being reported, weight and number of sensors, efficiency of regulators, and effectiveness of the antenna.

We take a comprehensive approach to maximize functionality instead of narrowing down power consumption issues to firmware-related problems only.

Relevant Adequate Infosoft Experience

Our nRF9151 NTN Development Services

Feasibility Study and Connectivity Planning

We begin with the deployment environment, reporting requirements, expected battery life and business consequences of missing data.

We begin with the deployment environment, reporting requirements, expected battery life and business consequences of missing data.

The experts analyze the options for LTE-M and NB-IoT coverage, operator's connectivity options and SIM availability, as well as the requirements for local frequencies, frequency of payloads, allowable latency, design limits, and requirements for cloud platforms.

Thus, a documented system architecture plan is obtained, along with the engineering risks that could be tested in advance of creating a unique PCB.

nRF9151 Firmware Development

We develop embedded applications using the nRF Connect SDK and Zephyr RTOS.

We develop embedded applications using the nRF Connect SDK and Zephyr RTOS. Firmware services may include sensor drivers, GNSS control, modem management, network registration, device state machines, watchdog recovery, local storage and secure cloud communication.

For intermittent networks, we implement store-and-forward queues, message identifiers, acknowledgements and controlled retries. This prevents a temporary coverage loss from either discarding measurements or causing an uncontrolled reconnection loop that drains the battery.

NB-IoT NTN and Satellite Integration

Our NTN services deal with activities like modem configuration, network selection, registration diagnostics, connection and signal logging, payload management, handling of timeouts and recovery strategies.

Our NTN services deal with activities like modem configuration, network selection, registration diagnostics, connection and signal logging, payload management, handling of timeouts and recovery strategies. We work with different types of NTN connectivity providers and check the performance of NTN under realistic conditions.

Satellite IoT is not broadband. The best results come from compact, event-driven messages and applications designed for variable latency. We therefore optimize telemetry formats, reduce unnecessary protocol overhead and prioritize alarms over routine measurements.

Custom PCB and Hardware Development

We design custom nRF9151 hardware around the product's electrical, mechanical and environmental constraints.

We design custom nRF9151 hardware around the product's electrical, mechanical and environmental constraints. Work can include schematics, component selection, multilayer PCB layout, sensor interfaces, power supplies, battery charging, debug access, SIM or eSIM integration, external flash and production-test points.

Cellular, satellite and GNSS antenna placement is considered early. Enclosure materials, ground clearance, nearby batteries, cables and mounting surfaces can materially change RF performance. Prototype testing and antenna tuning are planned before design freeze.

GNSS and Asset-Tracking Firmware

Tracking applications can combine scheduled GNSS fixes with accelerometer-based motion detection, geofencing and adaptive reporting.

Tracking applications can combine scheduled GNSS fixes with accelerometer-based motion detection, geofencing and adaptive reporting. A stationary asset may report infrequently, while movement, impact, route deviation or tampering can trigger a higher reporting rate.

When a GNSS fix is slow or unavailable, the firmware should follow a defined timeout and fallback policy instead of keeping the receiver active indefinitely.

Cloud, Dashboard and Mobile-App Development

Adequate Infosoft can build the wider IoT platform, including MQTT or HTTPS ingestion, device identity, time-series storage, maps, geofences, alarms, device configuration and fleet dashboards.

Adequate Infosoft can build the wider IoT platform, including MQTT or HTTPS ingestion, device identity, time-series storage, maps, geofences, alarms, device configuration and fleet dashboards.

We also develop web and mobile applications for installers, operators and customers. Depending on the solution, this may include device activation, asset assignment, subscription management, telemetry history, role-based access, firmware status and alert acknowledgement.

Security and Device Lifecycle Management

Our security work covers secure boot, signed firmware, encrypted communication, unique device credentials, protected key storage and least-privilege cloud access.

Our security work covers secure boot, signed firmware, encrypted communication, unique device credentials, protected key storage and least-privilege cloud access. We also plan credential rotation, device revocation, secure manufacturing provisioning and controlled firmware updates.

Because remote products may remain deployed for years, device observability is equally important. Diagnostic data should identify modem failures, reset causes, battery deterioration, rejected updates and unusual communication costs without collecting unnecessary information.

Suitable nRF9151 NTN Applications

The platform can support:

Agriculture

Agricultural soil, irrigation, livestock and equipment monitoring.

Asset Tracking

Container, trailer and high-value asset tracking.

Maritime

Maritime telemetry and near-shore equipment monitoring.

Utilities

Water pipelines, tanks, pumps and remote metering.

Energy

Solar, wind and distributed-energy infrastructure.

Environmental Monitoring

Environmental and weather-monitoring stations.

Mining & Construction

Mining and construction equipment.

Safety Devices

Emergency beacons and remote-worker safety devices.

Nordic has demonstrated the platform over non-geostationary satellite infrastructure and describes deployments involving remote water-monitoring equipment.

The company identifies agriculture, utilities, environmental monitoring, logistics and asset tracking as important use cases for the technology.

Why Choose Adequate Infosoft?

Adequate Infosoft brings embedded firmware, PCB engineering, cloud, web and mobile development into one delivery team.

This is important for nRF9151 products because successful satellite IoT depends on the interaction among RF design, modem firmware, power management, telemetry protocols, backend processing and product operations.

We explain technical risks concisely, corroborate key assumptions through prototypes, and produce engineering documents for future development and production.

Our reputation within the domain is based on both theoretical and practical knowledge in the field of GPS tracking, industrial data logging, smart agriculture, and remote IoT.

Frequently Asked Questions

Does nRF9151 connect directly to satellites?

Yes. The nRF9151 allows the communication according to the NTN technology of 3GPP Release 17, if the modem firmware, antenna, and other necessary components are in place.

The Nordic has tested and proved the module to be compatible with the NTN system with the Skylo service. However, the coverage and option of usage mainly depend on the network provider, country, and plan chosen by the users.

Can one device use cellular and satellite networks?

Yes, a product can be designed for terrestrial LTE-M or NB-IoT and supported NTN connectivity. Network-selection and fallback behaviour must be engineered and tested with the target operator.

Is nRF9151 suitable for sending images or video?

Generally, no. NB-IoT NTN is best suited to compact telemetry, positions, commands and alarms—not continuous high-bandwidth media.

Can you develop the complete product?

Yes. We provide services starting from feasibility study and PCB design to firmware development, antenna integration, cloud infrastructure creation, dashboards and mobile applications' development, as well as final testing and preparation.

Abhinav Akula
DevOps Engineer and 3× Microsoft Azure Certified professional specializing in Azure cloud solutions, migration, deployment automation, and multi-cloud environments. He holds Microsoft certifications as an Azure Developer Associate and Azure Solutions Architect Expert, with expertise in building scalable, secure, and reliable cloud infrastructure.