IoT devices based on NB-IoT technology will also encounter many challenges in the design and production process.
In 2017, the Internet of Things (IoT) entered its first phase of commercialization. This year marked a significant milestone with the official freezing of the Narrowband IoT (NB-IoT) standard, alongside strategic moves by domestic operators and strong support from equipment manufacturers. As a result, the IoT industry began to scale rapidly, entering a fast lane of development.
However, similar to smartphones, IoT devices based on NB-IoT technology face numerous challenges during design and manufacturing. Some of these issues are common, while Others are unique to the nature of IoT applications.
Keysight offers powerful testing tools that allow engineers to simulate real-world scenarios and conduct accurate, repeatable measurements in the lab. These tools help overcome seemingly impossible tasks, such as ensuring device reliability, extending coverage, managing power consumption, and passing certification tests.
Reliability is critical for IoT devices, which often need to operate continuously for years. With large deployment numbers and diverse environments, high installation and maintenance costs make this even more challenging.
Extended coverage is another key requirement. NB-IoT provides up to 20 dB higher coverage than traditional cellular technologies like GPRS, with a coverage radius about four times larger. Devices may be located in remote or complex environments, making robust performance essential.
Power consumption is also a major concern. Most IoT devices rely on batteries and cannot be easily recharged. Therefore, energy efficiency is crucial to ensure long-term operation—sometimes lasting over a decade.
Certification tests are equally important. Since NB-IoT operates in licensed bands, it requires compliance with carrier network standards. The technology coexists with existing networks and needs interoperability, along with a secure authentication mechanism similar to traditional mobile networks.
To succeed in this space, engineers must have the right tools. Keysight’s comprehensive IoT test solutions help you understand your products better, faster, and more thoroughly.
1. **NB-IoT Data Transmission (Function) Test**
NB-IoT differs from other LPWA technologies by operating in licensed bands, managed by operators. This leads to a simpler spectrum environment with less interference and enhanced security. Before deployment, engineers must verify that the terminal can communicate effectively with the base station. Keysight’s UXM Base Station Simulator supports efficient verification through call setup, network setup, and BLER testing.
2. **Power Consumption and Battery Life Test**
Long battery life is essential for many IoT applications, especially where access is limited or costly. Power consumption testing includes both functional and performance aspects. Keysight’s NB-IoT low-power test system helps evaluate and debug power usage across different operational states, ensuring optimal battery life.
3. **RF Test**
RF signal quality is vital for NB-IoT performance. Keysight’s signal analyzers provide precise measurements of transmitter and receiver characteristics, including power, bandwidth, and modulation quality. These tools ensure that devices meet strict RF standards and perform reliably in real-world conditions.
4. **Conformance Testing**
Like traditional cellular devices, NB-IoT terminals must pass conformance tests set by industry organizations such as GCF and PTCRB. Keysight’s T4010S compliance test system covers all necessary tests, helping reduce time-to-market and improve pass rates.
5. **EMI Interference Test**
Electromagnetic interference (EMI) can affect device performance. Pre-compliance testing early in the design phase helps identify and resolve EMI issues before final certification. Keysight’s tools support troubleshooting and optimization, ensuring reliable and compliant IoT systems.
At EDICON 2018, Keysight will discuss how to maximize ROI on testing and optimize both capital and operational expenditures. With the right tools and expertise, IoT engineers can turn challenges into opportunities.
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