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December 2016

Smart macro network enhancements: 4×4 MIMO

smart macro enhancements

The various macro network enhancements available today offer a cost-efficient and smart approach for capacity increase in mobile networks. In the first part of this series, we provided an overview of the hardware-related capacity enhancing features and discussed carrier aggregation in detail. The second part of this series discusses higher order MIMO antenna configurations, particularly 4×4 MIMO. The potential of…

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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…

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Harmonizing user interfaces: how to avoid user interface fragmentation (part 1 of 3)

Harmonizing user interfaces

User interface (UI) fragmentation is a problem that many large companies face when their products are created by different teams. Different teams may have different tendencies and preferences, the products may use different technology stacks and the applications may use different frameworks. The results are often fragmented and inconsistent user interfaces. The higher the fragmentation across your products, the higher…

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How phone design affects system design

phone design

In our introduction to how system design enhances the quality and reliability of measurements, we hinted at a myriad of key factors that have an effect on end-user experience, one of them being the device itself and the technologies it supports. In this post, we will look at the evolution of phone design and how it impacts the engineering and designing…

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Suspecting PIM issues in your network? Let us help you find the root cause

passive intermodulation

More subscribers and higher data rates translate into a constant strain on networks, no matter where. But what could have happened when technicians are notified of low performance yet cannot find any defective components at the BTS site? The answer may be: passive intermodulation, or PIM. And, the source of this PIM problem could be a tiny metal flake in…

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How system design enhances the quality and reliability of measurements

System design

Analyzing quality of experience (QoE) and quality of service (QoS) is like shooting at a moving target: in constant flux and affected by a myriad of variables – both known and unknown. Undeniable key factors affecting end-user experience, however, include the network (e.g. the capacity), the location (i.e. the placement of the device, e.g. indoors or outdoors, stationary or moving,…

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Smart macro network enhancements: carrier aggregation

carrier aggregation for macro network enhancements

The popularity of app services among smartphone users poses a serious challenge to mobile operators: data consumption is soaring; and with an expected 10-fold increase in the next 5 years, investments to merely transfer the sheer amount of data are inevitable. So, how can network operators best address these increasing network capacity and performance demands? Carrier aggregation is one option….

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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…

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