Proactive caching in 5G networks

“Living on the Edge: The Role of Proactive Caching in 5G Wireless Networks” is a paper by Ejder Bastug, Mehdi Bennis and Merouane Debbah that recently won an award for best tutorial article from the IEEE Communications Society, 2016. The paper outlines a couple of potential use cases for edge computing, with a focus on the potential benefits that the deployment of proactive caching at the network edge could bring. One of the co-authors, Mehdi Bennis, has written a brief outline of the themes…

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5G spec process starts for real at 3GPP meeting in Busan

Today is the last day of a five day meeting being held in Busan, South Korea. The meeting, of the 3GPP’s RAN Working Group one and officially numbered 3GPPRAN1#84, has seen around 400 delegates gather together to develop specifications of next generation radio network and air interface technologies. Host of the meeting, Samsung Networks, described the meeting as the first at which work to determine specifications of 5G radio and air interface standards happened in earnest. A release from Samsung said, “This meeting…

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SK Telecom says 28GHz trials go well

SK Telecom said today that tests of equipment operating at the 28GHz mmWave band, carried out since August 2015, had gone well. The company has been testing base stations in the frequency, along with a test mobile device within a vehicle since August 2015, based on test equipment from Samsung. One of the features under test was 3D beam forming – steering antenna beams both horizontally and vertically. Although the companies released no firm details as to speed, performance, propagation…

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Researchers achieve “world record” spectral efficiency with massive MIMO

Researchers at Bristol University and Lund University have demonstrated 128 antenna MIMO that has achieved very high spectral efficiencies, and could be significant for 5G radio interface design. A press release from Bristol University claimed that it had achieved a spectral efficiency – expressed as bits per second per Hertz – of 1.59Gbit/s in a 20MHz channel. That represents a 12x improvement on current LTE cellular efficiencies, and is a “world record” according to the PR headline. The research team were conducting…

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Components of a 5G architecture

The devil is in the detail, they say, and when it comes to 5G there is a lot of detail still to be thrashed out. Quite how much detail is evident in the latest whitepaper – 5G RAN Architecture and Functional Design – delivered by 5G-PPP’s METIS-II. The paper raises a lot of questions, but can come to very few definitive answers as yet, although it does propose a number of likely answers to each question. These include new AI design,…

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National pride in “leading 5G” is a barrier to 5G development

This week the UK’s treasury chief repeated his Government’s desire to make the UK a world leader in 5G. Similarly, EC Digital Commissioner Guther Oettinger was off again on his desire to position Europe as a 5G leader. Despite the increasing tendency of governments to talk of a country, or even region, “leading in 5G” it is empty talk. There are only two potential ways to “lead in 5G”, one is in leading the technology development that goes towards 5G.…

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mmWave critical to future of 5G in USA

NYU Wireless makes 5G Channel Simulator software available for commercialised mmWave radio A 5G conference and workshop organised by US communications regulator the FCC has heard that Millimeter Wave (mmWave) frequencies are key to realising the promise of 5G networks. Speakers from NYU Wireless, Google, Verizon and and a clutch of vendors repeated the message that only frequencies in the mmWave bands provide wide enough channel bandwidth and propagation characteristics suitable to meet the future demands that wireless networks will…

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5G pre-MWC, it’s all happening

It looks like 5G is actually going to move from being the up and coming topic at MWC, to forming much of the bulk of the discussion at the event itself. Just this week we have seen: 1. Vodafone announce its 5G R&D partners. In a blog post, the company said it would be working with Huawei, Nokia, Ericsson, Intel and Qualcomm to evaluate technologies and work on standards submissions. 2. Ericsson announced that it had achieved a 25Gbps headline rate,…

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5Qs on 5G: Red Hat

Our latest 5Qs on 5G comes from open source and virtualisation specialist Red Hat’s Chris Wright. Chris is Chief Technologist at Red Hat. Red Hat’s OpenStack-based NFV Infrastructure platform is used by the likes of Alcatel-Lucent (now Nokia) for its CloudBand NFV solution. The company is also a member of open source projects for NFV and SDN such as the Open NFV project and Open Daylights. Here, Wright provides some open and thoughtful answers to questions that were intended to throw some light…

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5G probably won’t be speaking TCP/IP as we know it

A new working group has been set up within ETSI to provide a central repository and thoughtspace for those who think that 5G will require new protocols that are more optimised to the properties of cellular networks. An ETSI statement said that The Next Generation Protocols Industry Specification Group (NGP ISG) has been set up to, “provide a forum for interested parties to contribute by sharing research and results from trials and developments in such a way that a wider audience can…

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