Blog Header

In: Testing QoS & QoE

What is the market for voice telephony in 2017?

voice telephony

In competition with messaging services and Facebook and Instagram timelines, is voice telephony at all relevant in 2017 and beyond? We believe: yes, absolutely! Telephony is still the most direct and most efficient way of telecommunication. Apart from being an auditory interaction, voice still transports much more emotion – and opportunity for clarification – than any emoticon ever could. Or,…

More

Proofing and optimizing a network’s readiness for video transmission

video quality measure

In previous entries of this blog series about the challenges of mobile video services, we discussed video quality as a perceived metric, how it can be measured, and how quality measuring algorithms work. To conclude the series, this post focuses on how to apply a video quality measure to quantify video services as consumed by subscribers. What are the challenges…

More

The true view of your and your competitors’ networks

network performance

Hand in hand with the ever increasing demand for more network capacity and the soaring popularity of applications, particularly in real-time, mobile operators in mature markets are also facing a virtually flat subscriber penetration for the next five years. To win new customers, mobile operators are left with no other option than to beat the competition by providing better services…

More

What different models for predicting visual quality exist? What models are applicable for which test cases?

visual quality

In a previous blog entry about the challenges of mobile video services, we discussed video quality as a perceived metric and how it can be measured subjectively in viewing sessions. In this post, we will take a closer look at automated video quality measurement methods, often called objective measurements, which are applied in real field video quality measurements. An objective…

More

Evaluating visual quality and video MOS based on subjective perception

Visual quality

Video services are very popular and so is their use today in various services and media. YouTube and Netflix are merely the pioneers in video streaming; many other services have followed. Broadcasting stations move more and more content online, videos are shared via social media, and peer-to-peer applications are on the rise; for example, video chat services (e.g. Skype), or…

More

VoLTE is real, VoLTE is now – the latest measurement results


In early 2015, the first operators enabled Voice over LTE (VoLTE) for their customers in Europe. This requires LTE coverage, a VoLTE-capable phone and – at least in the first months – a dedicated subscription. Today, LTE coverage is widely available and state-of-the-art devices support VoLTE natively. Now is the time to answer some questions: Does VoLTE improve telephony for…

More

Challenges of mobile video services for network operators

mobile video services

Mobile video services by far demand the biggest chunk of data in today’s mobile networks. According to the Cisco Visual Networking Index (VNI) Forecast 2016, by 2020, video services will account for 75% of all data consumption. The performance of video services has a large influence on customer satisfaction. For the mobile network operator, the decision to deliver higher or…

More

Webinar report: mobile video quality testing

Video quality testing in mobile networks

Video is ubiquitous. The performance of video services in mobile networks is fundamental to customer satisfaction and quality of experience. Video quality testing in mobile networks is challenging; but with the right tools and measurement approaches, it proves highly successful.  Today, there is a general tendency towards higher resolutions. This is in line with increasing transport capacities of networks, high-resolution…

More

Cut costs and save time benchmarking at remote locations

Benchmarker II Go

Say, you’re a field engineer working for a service provider or mobile network operator, and you’ve just been assigned to conduct an ad hoc drive test campaign to analyze voice and data services. The location of the networks to be verified and benchmarked, however, requires you to take a plane and rent a car locally. In most cases, a costly…

More