Ericsson Research Blog

Research, insights and technology reflections

Exploring how to build standards for Virtual Reality

Virtual reality (VR) has quickly become a household term. There are lots of gadgets and apps that let you take control of your viewing experience by letting you watch a film clip in any direction in a head-mounted display or simply by moving your phone or tablet. However, since most of these apps define their own vertical, content has to be adapted for each of them. This also means that many players are motivated to find common ground and define relevant standards for VR content delivery and consumption.

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The cellular Internet of Things – technologies, standards and performance

With each new generation, cellular systems have evolved to provide support for new services and applications. Currently the fifth generation (5G) radio access network is under development and an important pillar in this project is support for the Internet of Things (IoT). Ericsson has since 3GPP Release 13 contributed to this development with the design of three new technologies for support of massive Machine-Type Communications (mMTC). mMTC provides wireless connectivity for large number of network-enabled devices. This work is covered in detail in the recently published book ‘Cellular Internet of Things – Technologies, Standards and Performance’ authored by me and my colleagues Mårten Sundberg, Y.-P. Eric Wang, Johan Bergman and Joachim Sachs.

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LTE-NR tight-interworking and the first steps to 5G

For 5G systems to start delivering value immediately, initial components of the New Radio (NR) technology need to satisfy both urgent market needs – by assisting LTE radio – and the longer-term requirements of 5G. In this context, LTE-NR tight-interworking is one of the most important technology components.

In this blog post, we will explain the concept and describe the key features now being standardized by the 3GPP.

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Developing mmWave mobile radio interface

mmWave mobile communication is challenging due to harsh radio propagation conditions and severe hardware impairments that are experienced at extremely high carrier frequencies and large signal bandwidths. Ericsson Research, in partnership with leading research organizations in Europe, has led the development of radio interface for mmWave mobile communications. Let’s have a look at this innovative design.

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Post-quantum cryptography in mobile networks

Work on cryptography in cellular networks technologies, such as 5G, is driven both in 3GPP and in IETF. Post-quantum cryptography is one important field in this area. Ericsson actively participates in this work, and we recently presented a well-received paper in 3GPP describing the impact of quantum computers and how they affect cellular networks.

This blog post is a slightly revised reproduction of the paper.

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Robust scrambling for NB-IoT broadcast channels

Narrowband Internet of Things (NB-IoT) is a new cellular technology designed to provide wide-area coverage for IoT. It was introduced in 3GPP Release 13 and is expected that many commercial NB-IoT networks will be launched in 2017. Here, on the Ericsson Research blog, we shall provide a brief explanation for the rationale of a change request (CR) approved in 3GPP RAN meeting #75 in March 2017 for the enhancement of the robustness of NB-IoT broadcast channels when it comes to inter-cell interference – when NB-IoT is deployed inside a frame-synchronized LTE network. The approved CRs are mandatory and non-backward compatible. Introducing such CRs is possible considering that NB-IoT deployments had not yet occurred on a widespread basis. The approved CR preserves robust NB-IoT performance when deployed in an LTE network that also supports features such as Multicast-Broadcast Single-Frequency Network (MBSFN) or Positioning Reference Signal (PRS), which require frame-synchronization across cells to ensure good performance in practice.

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Enhanced 4G LTE coverage for Machine-Type Communications and Internet of Things

Support for Machine-Type Communications (MTC) and Internet of Things (IoT) in cellular networks is being drastically improved with the recent launches of products based on 3GPP Release 13. Improvements have been introduced in both 2G GSM networks and 4G LTE networks as well as in the form of a new radio interface optimized for narrow frequency band allocations. These are referred to as EC-GSM, LTE-M and NB-IoT, respectively. In this blog post we focus on the 4G LTE improvements for MTC/IoT known as LTE-M in the areas of low device cost, long battery life, and deep coverage.

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How do you create a new ‘G’? Like 5G

Have you ever thought about how a new ‘G’ is created?

5G is the next generation in mobile communications, addressing a wide range of use cases. An integral part of 5G is today’s 4G, and, therefore, those at the forefront of 4G technologies are also more likely to lead the introduction of 5G. This is certainly true of Ericsson – we’ve taken the lead in creating previous generations of technology, and our patent portfolio covers 2G, 3G and 4G. Now, through a continuation of our pioneering research and technology development, we’re ready to advance business and society in more innovative ways than ever before, with the introduction of 5G.

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