Tag3GPP

What are 5G requirements? The IMT-2020 draft

The same way True 4G had a real definition based on IMT-Advanced, the ITU released in February 2017 the draft of IMT-2020 describing the minimum requirements related to technical performance for IMT-2020 radio interface(s), which sets the goals for 5G.
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5G Frequency Bands overview

One of the objectives of 5G requires a massive use of frequency bands to allow both flexibility of use cases and large chunks of bandwidth allocated for very high throughput. Here is a summary of what frequency bands are considered so far for 5G.

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5G will be called 5G and has an official logo

3GPP has unveiled the logo and name which will be used for 5G networks, which will be called 5G (unlike 4G which official name has been LTE). This designation and logo are meant to be used from 3GPP Release 15 and onwards and intend to show some kind of continuity between LTE and 5G.

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GSM-R, LTE-R and Hyperloop at 1,200 kph

Hyperloop Transportation Technologies (HTT), one of the American start-up which develops a concept of super fast train moving on electromagnetic suspension at 1,200 km/h has recently signed an MoU with the region of Occitania in France to set-up its European R&D center. This made me wonder how it will be possible to communicate from an Hyperloop train with our smartphone.

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5G Network Architecture

Here is a diagram that I found interesting, showing the logical architecture of a 5G network including the Core and Radio subsystems, as it is being discussed in the 3GPP working groups.

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Telecommunications Q&A on StackExchange

Have you ever dreamed of a free Q&A website where you will be able to get expert advice on telecommunications topics? The Telecommunications Q&A site on StackExchange will be for pros sharing questions and solutions within the field of fixed and mobile telcos: engineers working for MNOs or ISPs, experts working for equipment vendors, experts working in telecom regulation and international standardization bodies.

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Calculate the maximum throughput of TD-LTE

In a previous post I presented how to calculate the maximum throughput of LTE, and this was focusing on LTE FDD (Frequency Division Duplex), where an equal bandwidth of spectrum is allocated for both the Downlink and the Uplink. As a reader asked, in this post we do the same for LTE TDD (Time Division Duplex) a.k.a TD-LTE.

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What is the maximum speed of LTE?

Snapdragon just announced the X16 LTE Modem that can achieve 1 Gbps throughput thanks to higher order modulation (256 QAM), 4×4 MIMO and 4x Carrier Aggregation of 20 MHz. But how can we calculate the maximum theorical peak LTE throughput depending on those parameters?

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What will the air interface for 5G look like?

There is a race between equipment manufacturers, chipset manufacturers, carriers and  standardization bodies to take the lead on defining what 5G will actually be. One of the hot topics is the choice of the most appropriate waveform and mutliple access method to meet the requirements of 5G.

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Wireless frequency bands vademecum

One website any telecommunication engineer should have in his bookmarks is the excellent niviuk.free.fr which gives a detailed and well-organized way to see the various standardized frequency bands on LTE, UMTS, GSM, CDMA-2000 and WiFi.

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