Interactivity Test: ITU-T Recommendation G.1051 (part 8)

May 11, 2023 | by Jens Berger

Data transport latency has become an important factor in interactive and real-time usage of next generation mobile networks. Measuring latency under realistic traffic conditions and quantifying perceived interactivity are important building blocks in network performance evaluations. The new Recommendation ITU-T G.1051 uses Rohde & Schwarz latency measurements and interactivity tests as international standards.

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Validating license obligations – converting network scanner measurements into data rates

April 11, 2023 | by Michael Lorenz

“In mobile communications, trust is good but measurements are better,” says Hubert Aiwanger, Bavarian minister for economic affairs, state development and energy. The German state of Bavaria ordered a fourth review of mobile network operator license obligations. The review focuses on how well operators met the minimum data rate of 100 Mbps on federal roads and selected railway lines.

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EVS AMR-WB IO speech quality improvements in telephone services

March 24, 2023 | by Anna Llagostera

This post looks at recent results from an internal study of speech quality improvements when the EVS AMR-WB IO mode is used in conjunction with the legacy AMR-WB encoder.

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Interactivity test: Dependency of packet latency on data rate (part 7)

January 26, 2023 | by Jens Berger

Data transport latency has become a very – if not the most – important factor in interactive and real-time use cases for next generation mobile networks. Latency is not a constant; it can vary over time but can also depend on data rate and packet stream characteristics. The following analyzes packet latency and its dependency on data rate and packet size in a few example mobile networks.

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When Rohde & Schwarz meets research - a success story!

November 25, 2022 | by Marco Neri

Read the interview with Özgü Alay, PhD, Associate Professor at the University of Oslo, and Giuseppe Caso, Experienced Researcher at Ericsson Research, Stockholm, about the 2020 measurements of commercial 5G networks in Italy.

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5G mobile network testing using a passive network scanner (Part 4)

November 1, 2022 | by Corbett Rowell

Network Synchronization of 5G networks

The last blog post (Part 3) examined the first challenge of how you can measure and analyze 5G networks passively by analyzing synchronization and broadcast signals. In this article we address the challenge of timing alignment between 5G base stations as this has a large effect on inter-cell interference and consequently user experience.

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Interactivity test: Packet delay variation and packet loss (part 6)

October 17, 2022 | by Jens Berger

Data transport latency has become a very – if not the most – important factor in interactive and real-time use cases for next generation mobile networks. Real-time capability is not determined by the average latency at which the packets are delivered, but rather by the latency of the slowest packets. The following analyzes delay jitter and the packet loss in the uplink and downlink.

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5G mobile network testing using a passive network scanner (Part 3)

September 9, 2022 | by Corbett Rowell

How to measure 5G networks?

The last blog post (Part 2) explained the technical background and the setup of the measurements in FR1 and FR2. In this article we discuss how you can measure and analyze 5G networks passively by analyzing synchronization and broadcast signals.

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5G NR and LTE latency analysis in a public network (part 1)

August 29, 2022 | by Meik Kottkamp

This article provides measurements results for both one-way latency (OWL) and round-trip times (RTT) in a commercially deployed, public 5G NSA network obtained using the commercially available Interactivity Test based on the QualiPoc Android solution for RTT from Rohde & Schwarz (prototype for OWL).

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5G mobile network testing using a passive network scanner (Part 2)

August 8, 2022 | by Corbett Rowell

Technical Background and Measurement Setup

In the previous introductory blog post: 5G mobile network testing using a passive network scanner (Part 1), we discussed why a dedicated scanner is necessary for accurate mobile network testing. This post explains the technical background and the setup of the measurements in FR1 and FR2.

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Coverage and performance testing of 5G private networks

July 8, 2022 | by Gregor Tomic

Private networks are becoming more important in various industries that, however, still seems to be in the trial phase with 5G and various use cases. Our experience with recent measurement campaigns shows that we still have a long way to go to meet the targets for latency and throughput in high traffic networks. Read our story to get more information about how to test the quality of private 5G networks.

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5G mobile network testing using a passive network scanner (Part 1)

June 23, 2022 | by Corbett Rowell

Introduction

This new blog series emphasizes the importance of passive mobile network testing for the technology and deployment verification of 5G NR in the field and its future development. This introduction covers the main topics that will be detailed in later posts of this series.

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Benchmarking & optimization

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Field services & interference hunting

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Innovations in mobile network testing

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Testing from RF to QoE

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New e-book provides unparalleled insight into the 5G NR world

What's the status of 5G NR? What are the test and measurement requirements, and how do we approach them? Download our new e-book now and get unparalleled insight into the world of 5G NR.

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The world's first 5G NR network measurement solution

Rohde & Schwarz is pioneering 5G New Radio (5G NR) network measurements with the world's first commercially available 5G NR network measurement solution. This solution enables users in the 5G network ecosystem as well as regulators to measure the 5G NR network coverage accurately - one of the biggest challenges in the network planning.

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Pioneers in NB-IoT field measurements

We are paving the way to NB-IoT by provding the world's first accurate LTE/NB-IoT coverage measurement solution: via a software upgrade, the R&S ROMES drive test software now also supports NB-IoT coverage measurements with R&S TSMx scanners.

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