What are the main NB-IoT use cases in Luxembourg today, and how have they evolved in recent years?
In Luxembourg, this technology is now used in several key domains, including smart building management, energy monitoring, and environmental tracking. In workplaces, for example, it enables real-time monitoring of office occupancy, CO₂ levels, and energy consumption with high reliability and lightweight infrastructure.
In recent years, expectations have clearly evolved. Users no longer just want to measure—they want to anticipate. The approach is shifting from reactive to predictive. With its low power consumption, high indoor penetration, and multi-year autonomy, NB-IoT is ideal for continuous, large-scale monitoring.
The building and energy sectors were the first to adopt this technology, but smart cities are also leveraging it for public lighting, air quality monitoring, and connected parking. Even agriculture is starting to benefit, particularly in greenhouses, where tracking humidity and temperature is crucial.
NB-IoT complements 5G, which provides real-time, immediate communication. I presented this during “Connecting Tomorrow,” part of Nexus Luxembourg, demonstrating how NB-IoT, as a static sensor layer, can detect, for example, a fire outbreak, while 5G SA triggers a rapid response on-site. An autonomous 5G-connected drone can then analyze the situation in real time using AI and transmit video feeds to human operators. This illustrates how NB-IoT, often invisible, plays a structuring role in smart infrastructures alongside other advanced technologies.
Concrete benefits in workplace management with Zens
To address a common challenge—more employees than workstations and unpredictable occupancy peaks—Zens developed a simple, innovative, and smooth approach. The principle relies on wireless chargers, initially used to charge phones or accessories, which became smart NB-IoT sensors. Connected via our NB-IoT card, these everyday objects collect anonymized real-time data on desk usage without relying on corporate Wi-Fi or local gateways. This technical independence allows quick, secure plug-and-play installation across entire buildings.
The chargers feature LEDs indicating workstation status: free, occupied, reserved, or to be cleaned. Coupled with a booking app, they provide employees with real-time availability and give facility teams an effective tool for maintenance and space optimization. NB-IoT was crucial in making the solution reliable, discreet, and scalable. It bypasses internal network constraints while ensuring secure, GDPR-compliant data transmission. Employees in Zens’ client companies arrived at the office more motivated and had a clearer view of workspace occupancy.
Future developments and emerging use cases
NB-IoT is reaching an important technological milestone. What was once merely a data transmission channel is becoming a system capable of analyzing and acting directly on-site. Planned advances from manufacturers and operators will enhance autonomy, intelligence, and coverage while strengthening complementarity with 5G.
Future NB-IoT modules are expected to offer up to 15 years of battery life with ultra-low power components. They will include lightweight edge computing for local data preprocessing, anomaly detection, and real-time event response, without always relying on the cloud. Improved bidirectional communication will allow devices to receive remote commands seamlessly, with even better indoor and underground penetration for previously inaccessible areas, such as deep-buried meters or tunnels.
This evolution opens the door to a new generation of massive, silent, but high-impact use cases. In connected healthcare, NB-IoT will enable post-operative home monitoring via smart patches or blood pressure monitors. In agriculture, it will connect fields directly to monitor soil moisture or evapotranspiration, even in remote locations. For smart cities, the potential is equally promising: optimizing waste collection routes with connected bins or enabling predictive building maintenance via discreet sensors detecting humidity or microcracks.
As 2G and 3G networks are gradually phased out, NB-IoT is becoming a new technological standard for sectors seeking reliable, sustainable, and cost-effective connectivity—a discreet yet essential foundation for building the smart infrastructures of tomorrow.
