Author: Johanna Sochos

An expert with over 12 years of experience in signal processing and algorithm development, Johanna Sochos enjoys the analysis of large amounts of complex data and the design of smart algorithms to retrieve and analyze data. She is fascinated by the creation of models that reflect the network quality as perceived by humans. With a master’s degree in physics, the Senior Research Engineer is responsible for the specification of requirements for application and data tests. In her blog posts, Johanna Sochos examines just that – the design and evaluation of data and app tests.

By | February 19, 2020 | 488 views
 

Network Performance Score: How to conduct NPS benchmarking campaigns

The Network Performance Score (NPS) reflects the perceived technical performance of a mobile network or one of its subsets such as region, period, or technology. The overall NPS score is the combination of carefully considered and weighted main key performance indicators (KPI) for a wide range of services that are essential and exemplary for service quality. But what needs to…

 
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By | March 19, 2018 | 2,081 views
 

Measuring QoE of mobile data apps for network optimization (part 3 of 3)

How can mobile app testing support network optimization? In previous posts, we explained how you could assess the QoE of data applications on smartphones by measuring the success rate and duration of a series of actions. Based on large-scale real field measurement data, we showed how the duration saturates at higher available network speeds and examined the causes of this…

 
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By | March 1, 2018 | 1,678 views
 

Measuring QoE of mobile data applications: behind the scenes (part 2 of 3)

In the previous post, we explained how to measure QoE of mobile data applications on smartphones by means of success rate and the duration of a series of actions. Based on large-scale real field data, we showed how the duration saturates at higher available network speeds. But where does saturation come from? And what is going on in the background,…

 
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By | February 22, 2018 | 1,881 views
 

Measuring QoE of mobile data applications, e.g. Facebook (part 1 of 3)

Today, there are a huge number of apps available for smartphones covering almost any use case one can think of. Network providers want to ensure that their mobile connection offers everyone a smooth usage experience, especially for the most popular smartphone apps such as Facebook. To do this, they need targeted mobile data application tests. In this blog series, we…

 
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