Mobile network testing blog

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Mobile network testing

Category: Field services & interference hunting

How network testing ensures high quality in-building LTE and 5G deployments

August 17, 2021 | by Adrian Maurer

The popularity of app services, particularly video streaming, among smartphone users is expected to result in a 10-fold increase in data consumption over the next five years. Most of today’s mobile data traffic is generated indoors and this trend is set to continue into the future. While indoor use certainly includes users’ homes, in this context it mostly concerns large offices, public buildings and commercial properties.

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Understanding and troubleshooting interference in 5G NR networks

July 22, 2021 | by Manuel Mielke

Interference is a complicated topic with manifold root causes and impacts on network performance. So, let's try to simplify the topic of interference by giving it some structure. In our last blog posts about network synchronization we learned a lot about internal interference, which comes from the network itself e.g. due to a lack of time synchronization. Now let's take a look at the second type of interference. It is called external interference.

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Network synchronization in the time domain (part 2)

March 5, 2021 | by Manuel Mielke

Network operators have to make sure that synchronizing their networks will not produce any interference. Synchronization can affect several levels, these include synchronization on a relative time base, which was part of the blog post part 1 and extend to synchronization on an absolute time raster. Why? You can read all about it in part 2 of our blog post.

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Network synchronization in the time domain (part 1)

January 14, 2021 | by Manuel Mielke

Network synchronization requirements are as old as digital cellular mobile networks. As soon as cells have a neighbor relationship, network synchronization is mandatory in both the frequency and time domain. How does 5G NR with its extremely flexible specifications affect these synchronization requirements, and how can they be measured?

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Code-selective electromagnetic field (EMF) measurements (part 2)

August 18, 2020 | by Manuel Mielke

In part 1 of this article series about the electromagnetic field (EMF) measurements procedures, we explained the different measurement concepts, namely the code-selective and frequency-selective method. Now, learn how the code-selective EMF method offers mobile operators and infrastructure suppliers the best trade-off between EMF exposure limits and optimized coverage and capacity.

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Electromagnetic field measurements in 5G: Overview and concepts (part 1)

May 20, 2020 | by Manuel Mielke

Why are electromagnetic field (EMF) measurements critical for the widespread rollout of 5G NR, and how do you measure electromagnetic radiation? Learn more about the two fundamentally different EMF measurement procedures – frequency-selective versus code-selective – and the arguments in favor of the latter.

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5G site testing and troubleshooting

November 19, 2019 | by Peter Busch

Commercial 5G rollout is happening, and the rate of deployment of 5G non-standalone (NSA) sites steadily increases. Each new installation needs to be verified to ensure correct network performance and quality of service. 5G site testing requires specialist mobile network testing solutions that meet the RAN architecture’s new demands, including over-the-air connectivity and KPIs.

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Are you having trouble spotting interference in your 5G NR TDD network?

July 31, 2019 | by Yunuen Wagner

5G opens the door to a completely new range of applications and services. From an interference-hunting point of view, what are the implications of 5G? What are the particular challenges when hunting interference in 5G TDD networks? And how do you separate the UL and DL slots on your device’s display?

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Spectrum clearance: Prepare your 5G NR spectrum for deployment

February 6, 2019 | by Peter Busch

RF interference is one of the largest contributors to poor network performance, manifesting itself in dropped calls and low data throughput rates. Explore how to prepare your spectrum for 5G deployment by starting RF interference hunting and spectral clearance in LTE networks with a more automated approach.

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Interference hunting in cities: Choose angle of arrival over power

October 24, 2018 | by Jeremy Carpenter

The urban RF environment is very demanding – densely packed with a myriad of cellular and non-cellular transmitters, interfering emitters, and inconveniently located building. This post explains why it pays to focus on the angle of arrival (AOA) method regarding speed, accuracy, and effectiveness when hunting interference in urban areas.

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Interference hunting: The real meaning of automatic direction finding

November 13, 2017 | by Yunuen Wagner

The need for interference hunting in mobile networks is steadily increasing. And field engineers often ask us which tool we would recommend in order to be successful in the field. With decades of expertise, what we can say for sure is that it depends: the right tool for successful field service operations depends on the source of interference. Sources are manifold, but with the most suitable tool, they are easy to locate.

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PIM testing: Best practices in a nutshell

August 3, 2017 | by Yunuen Wagner

When it comes to PIM testing, the necessary steps to identify passive intermodulation (PIM) and locate its source are similar to interference hunting. In the end, PIM is an internal source of interference and can have a significant impact on network performance.

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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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