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05-Jun-2019 | AN-No. 1MA108

A step by step HOW TO guide to perform manual and automated wireless coexistence testing

At the end of the year 2020, there were over 20 Billion internet of things (IoT) products in the world operating using the licensed and unlicensed frequency bands. This growth trend is projected to keep steady over the coming years as more and more people adopt to a smarter and more connected lifestyle. This will result in a much busier and challenging RF environment than the one we have today. In order to understand the complexity of the RF spectrum, a white paper was published in 2021 from Rohde & Schwarz, which featured RF spectrum activity at multiple locations observed at different times of the day. The locations were selected based on population densities and the amount of known RF transmitters & their frequencies at those locations. It was also concluded that the ISM bands on average have higher channel utilization since most IoT devices take advantage of the unlicensed spectrum. The paper recommended, that while performing wireless coexistence testing, the test conditions should reflect the operational RF environment that the device is intended to operate in. Otherwise, the characterization of RF performance would only reflect ideal case which doesn’t exist in real world operation. Since it is not always possible to test all devices in the real world, relevant test methodologies need to be setup to replicate the real world as much as possible.This will help us get a better understanding of how the receiver of the RF device will behave under different RF conditions. It is also recommended to perform measurements in order to understand the behavior of the device in the future when the spectrum will get even more challenging. Therefore, a through characterization of the capability of the RF receiver to handle in-band and out-of-band interference signals in also of interest.In terms of regulatory compliance requirements for ensuring wireless coexistence performance, the ANSI C63.27 is currently the only published test standard that provides guidance on how to perform coexistence testing on devices. The test complexity is based up on risk imposed on the user’s health in the event of a failure caused by an or a plurality of interference signal. The standard also gives device manufacturers guidance regarding test setups, measurement environments, interference signal types and strategy, performance quality measurement parameters for physical layer using key performance indicator (KPI) and application layer parameters for end-to-end functional wireless performance (FWP).In this application note, the guidance provided by the ANSI C63.27-2021 version regarding test setup, measurement parameter and interference signal have been followed. It will give the reader a clear idea on how to configure standardized test instruments from R&S in order to generate the wanted signal as well as unintended interference signals and conduct measurement to monitor device performance in terms of PER, ping latency and data throughput.This application note provides step-by-step instruction on how to perform measurements using conducted and radiated methodology. Both manual and automated instrument configuration approach is explained in this document.The automation scripts are written using python scripting language and are available for download with this application note, free of charge. Official required to run the scripts are available on the PYPI database.

10-Nov-2022 | AN-No. 1SL392

This application note highlights various aeronautical radio navigation signals such as VHF omnidirectional radio range (VOR), instrument landing system (ILS) for glide slope (GS) and localizer (LLZ), as well as marker beacon (MB).

01-Feb-2012 | AN-No. 1MA193

Comprehensive test solutions guide for production and R&D

Small cell is a compact base station with smaller form factor and lower transmission power in comparison to the conventional macro base station. It covers relatively small area and serves less users. Usually, small cell can be integrated into the existing mobile network. By the evolution of radio access technology, the role of small cell has been changing through the evolution path. In the 2G/3G time, its role was to provide coverage in corner cases. Later during LTE, networks are not just providing coverage but capacity too. Small cells were then used to provide the addition capacity where required without adding additional spectrum. Now in 5G era, network operators use densification as an important strategy to provide seamless 5G services which demand coverage, capacity and performance too. With use cases requiring the 5G millimeter wave (mmW) rollouts, it makes sense to use small cells for densification due to the propagation characteristics of mmW.In this application note, we will shed light on the testing aspects of a small cell throughout the product life cycle with particular focus on the production test solution for the small cell device under test (DUT) in FR2 (frequency range 2, mmW frequency band) in Over the Air (OTA) environment for option 6 split based on radio communication tester R&S®CMP200 and OTA chamber R&S®CMQ200. The document is complemented with more insights into test solutions used in typical R&D test applications towards the second half of the application note.

19-Jun-2023 | AN-No. 1SL395

08-Feb-2018

Mobile World Congress 2018: Rohde & Schwarz to present cutting-edge T&M equipment for 5G, LTE-A Pro, IoT and IP security

This white paper provides an overview of test solutions addressing current and future requirements for antenna verification.

11-Nov-2016 | AN-No. 1MA286

This application note describes how to use the R&S CMW platform to perform the measurements defined in Bluetooth test specification version 5.

19-Jun-2017 | AN-No. 1MA282

R&S VSE-K7/Fxx-K7/RTO AM/FM/PM Modulation Analysis - Specifications

14-Feb-2022

Leveraging years of experience and exceptional insight in the entire mobile industry, Rohde & Schwarz is ready to present its comprehensive, leading-edge portfolio of mobile and wireless communications testing solutions at Mobile World Congress 2022 in Barcelona.

R&S FSx-K18x Amplifier Measurements - Specifications

T&M solution guide for network infrastructure equipment providers

R&S VSE-K70x/FSx-K70x/FPx-K70x Vector Signal Analysis Application - Specifications

Development Hints and Best Practices for Using Instrument Drivers

01-Jan-2013 | AN-No. 1MA153

This application note outlines two different approaches for remote-controlling Rohde & Schwarz instruments out of MathWorks MATLAB.

12-Jun-2017 | AN-No. 1MA171

Signal generation and analysis for 5G and beyond - Application Brochure

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Signal generation and analysis for 5G and beyond - Application Brochure

Signal generation and analysis for 5G and beyond - Application Brochure JA

R&S VSE-K10x / FSx-K10x, FS-K10xPC EUTRA/LTE Measurement Application - Specifications