IoT / M2M Applications & White Papers

More and more everyday items such as household appliances, vehicles, lights, etc. are now connected to the Internet, forming what is known as the "Internet of Things". Even clothing with sewn-in sensors to measure vital functions can now connect to the Internet and transmit data to cloud services. These different things use a variety of wireless technology standards to establish a connection. Due to its popularity, one of the most important standards is Bluetooth (or Bluetooth Low Energy). Before a new product with Bluetooth functionality can be launched, the qualification process defined by the Bluetooth SIG must be successfully completed. To save time and money, performance tests need to be performed in the development stage. This application note describes how to use the R&S CMW platform to perform the measurements defined in Bluetooth test specification version 5. As an alternative solution, we also cover how to perform almost all of the measurements with a spectrum analyzer and signal generator.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Rohde & Schwarz is under license.

Before devices can be used in a LoRaWANTM network, they must among other things meet country-specific wireless communications regulations. This application note shows developers and manufacturers of devices with LoRa wireless technology how transmitter measurements are conducted in line with FCC Part 15.247. It also describes how important receiver characteristics can be verified by metrological means. In this context, battery life in particular plays a key role in IoT applications. A further chapter describes how current consumption of LoRa wireless modules can be measured reliably.

Rohde & Schwarz signal generators and spectrum analyzers can be used to test IEEE 802.11ax stations in terms of uplink accuracy requirements. Measurements such as residual carrier frequency error and timing accuracy of HE TB PPDU transmissions are supported.

The application note guides developers and manufactures of Sigfox Devices to perform the required and recommended measurements with test solutions from Rohde & Schwarz. The note will help bring ultranarrowband IoT devices and applications using Sigfox technology to the market as fast as possible and help ensure the desired quality and performance.

For R&D, Pre-certification and QA, all currently defined Uplink- and Downlink- measurements are shown using the compact R&S®FPL1000 Spectrum Analyzer and R&S®SMBV100A Vector Signal Generator.

For Production, use of the R&S®CMW100A Communications Manufacturing Test Set is shown for the most essential Uplink RF tests on Sigfox Devices.

Python scripts for R&S®Forum giving example SCPI commands demonstrate how measurements shown in manual use can easily be automated.

The Internet of Things (IoT) is considered the driving force of current and future wireless communications. In release 13, 3GPP has specified Narrowband-IoT (NB-IoT) as a new physical layer. This application note gives a short introduction to NB-IoT and shows the easy measurements with Rohde & Schwarz instruments.

Focus RF Signal Analysis

The new IP connection security analysis solution for the R&S^®CMW500 platform identifies IoT and mobile communications devices’ IP connection vulnerabilities in an early stage of development.

As part of Release 13, 3GPP has specified a new radio interface, the Narrowband Internet of Things (NBIoT). NB-IoT is optimized for machine type traffic. It is kept as simple as possible in order to reduce device costs and to minimize battery consumption. In addition, it is also adapted to work in difficult radio conditions, which is a frequent operational area for certain machine type communication devices. Although NBIoT is an independent radio interface, it is tightly connected with LTE, which also shows up in its integration in the current LTE specifications.

In this whitepaper we introduce the NB-IoT technology with an emphasis on the tight connection to LTE.

The R&S^®CMW500 and R&S^®SMBV100A are the ideal team for motor vehicle type approval testing of your eCall and ERA-Glonass cellular modems and their GNSS receivers in line with the (EU) 2017/79 regulation.

Sequencer Software Tool

Modern mobile phones can support cellular and noncellular wireless communications standards at the same time. This means, however, that the subsystems must operate in very close proximity to each other within a single device (in-device coexistence). The resulting high level of reciprocal leakage can at times cause considerable interference.This application note employs preliminary theoretical analysis and demonstrates how the problems of indevice coexistence can be measured.

For german version please visit http://www.rohde-schwarz.de/appnote/1ma255.

The Rohde & Schwarz Bluetooth RF test solution with the R&S^®CMW and R&S^®CMWrun is closely aligned to the Bluetooth RF Test Suite. Most of the tests can be performed with the equipment under test connected to a single CMW which is remotely controlled via R&S^®CMWrun running on an external computer. Some of the tests require an additional signal generator. This document describes common setups for these tests and the required configurations.