Ericsson Research Blog

Research, Insights and Technology Reflections

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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Context-aware adaptation in IoT-based systems

Analysts predict the emergence of as many as 26 billion connected devices by 2020. The unprecedented scale, mobility and heterogeneity of IoT-based systems is mandating a fundamental change in the way they operate. It is our belief that to be sustainable and cost-effective, these systems must be autonomous and automatically adapt to dynamic changes in context, while ensuring that the IoT-based system delivers on user requirements.

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5G teleoperated vehicles for future public transport

When autonomous mode fails, or human assistance is required in a complicated scenario like road blocked due to accident or work, the ability to monitor and remotely operate a driverless vehicle becomes crucial. In this post, we discuss Intelligent Transport Systems (ITS) and the significant roles cellular networks can play.

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Are today’s clouds really cheap?

Can further reduction of operational cost in a cloud infrastructure be achieved by employing more sophisticated measurement and management tools? The answer is yes! Using integrated cost analysis tool with cloud management system coupled with advanced analytics can have a significant impact on the costs associated with operating a data center.

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Indoor positioning enhancements in LTE standardization

The positioning of terminals in indoor scenarios with cellular networks has attracted significant interest in recent years. A 3GPP Release 13 study item disclosed the extent to which LTE can meet specific requirements for indoor positioning and identified possible enhancements. A set of the most important enhancements have now been standardized in recently finalized 3GPP Release 13 and 14 work items.

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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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