NB-IoT Technology Solutions

What is NB-IoT?

NB-IoT (Narrowband IoT) is a cellular standard for the Internet of Things, developed by 3GPP and part of the LTE and 5G family. It uses a narrow 200 kHz band in operators' licensed spectrum and is designed for small amounts of data, very low energy consumption and long range. Compared with conventional cellular, NB-IoT reaches much deeper into buildings, such as basements and shafts. Power-saving modes such as PSM and eDRX let the module sleep most of the time.

How NB-IoT is used in the IIoT

NB-IoT is designed for stationary, battery-powered devices that report small amounts of data at longer intervals, in places without network infrastructure of your own. Typical examples are smart metering for gas, water and heat, fill-level monitoring of tanks, containers and silos at customer sites, status reports from distributed assets such as pumping stations or charging points, and monitoring of containers and returnable load carriers at fixed locations. The advantage: the device is switched on and online, without a gateway and without coordinating with local IT.

NB-IoT, LTE-M or LoRaWAN?

LTE-M is the second cellular standard for IoT. It offers higher data rates, lower latency and seamless handover between cells, making it suitable for moving objects and over-the-air firmware updates. NB-IoT is more power-efficient and penetrates buildings more deeply but is only partly suitable for mobile devices. LoRaWAN, in turn, runs as your own network without per-device fees, but you must provide coverage yourself. Many modules support NB-IoT and LTE-M at the same time.

How an NB-IoT solution is structured

The device consists of sensor, microcontroller, NB-IoT module, battery and a SIM card or embedded eSIM. It wakes at fixed times or on an event, measures, sends its data via the nearest cell and goes back to sleep. The operator forwards the message to a server, usually via UDP, CoAP or MQTT-SN, from where it reaches your own IoT platform. SIM management in the provider portal shows which devices are active and how much data they use.

What to consider when choosing

Before rollout, check network coverage at the actual installation point, not just on the operator's map. Also important are the tariff model, meaning data volume, contract term and whether roaming abroad is needed, and which networks a module supports. For devices that stay in the field for many years, battery capacity, transmission interval and remote firmware updates matter. And finally: where does the data go? Operator platforms or your own backend via MQTT or CoAP are both possible.