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T-Mobile in Prague tested the technology for 5G st, we were there

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The most extensive test of Massive MIMO technology in continental Europe took place in Petrovice’s cracks. This will help to develop the existing LTE and LTE-Advanced Pro versions, and especially the future 5G st. The test was performed by T-Mobile in cooperation with Huawei.

The test was unique in its scope. It took place for two months (January and Norway 2018) in the real area of ​​the Petrovice cracks. The antennas were positioned as if they were installed during heavy traffic. Eight micch cars with Samsung Galaxy S8 phones and gave technology then swept the streets and evaluated the quality of the connection.

The test, of course, took place in the framework of the existing 4G stage, when the operator separated from the 2.6GHz spectrum 10 MHz for classical LTE technology and 10 MHz for mMIMO. In each car there were always two named phones – one received LTE, the other signal dog antenna with mMIMO.

It can be simplified that the mMIMO technology (MIMO is an abbreviation of the Multiple Input Multiple Output multiple input / multiple input) multiple capacitive sources, which increases the transfer rate for users. In the case of the current LTE, one antenna covers a certain ground and, depending on how many devices are located on it, it divides the data flow. For example, if the throughput is 100 Gbit in a given font and within 100 customers, each case will have 1 Gbit. With the mMIMO antenna, each receives 100 Gbit, plus an ultra-latency latency. Of course, the speed at which the relay user will be available will depend on the speed at which the station’s storage station is connected to the data.

The active antenna for mMIMO technology contains plates and hundreds of so-called dipl (module with receiver and transmitter). Whenever within range, connect to your own beam and use the entire font. Massive MIMO therefore does not cover the entire selected country (elliptical signal with LTE), but sent only out the rays to the specific clm.

Of course, I have its limits. With active antennas with mMIMO, the existing LTE must be markedly dense. The range of the signal is short, so in countries where the technology is in operation, the antennas are installed, for example, on the story of public lighting. This is due to the fact that they are significantly smaller than those for classic LTE. Compared to them, they are so more expensive, five and ten times, depending on how many antenna elements they contain (usually in matrices 3232, 6464, 256256, that’s why the antenna of the square is not the same as in LTE). For full use of mMIMO and 5G in general, it is necessary to use a new spectrum. Sweat with centimeter and millimeter waves (this dog bag will only be released).

Data during the test in Petrovice flowed into the Samsung S8, which received the signal from mMIMO antenna three times and five times faster than LTE. At times, the situation was also seen when the phone was in the wall at LTE and thus without a signal, Samsung with data from the same locally active antenna dated high speed.

The test operation in the T-Mobile network covers not only us, but the whole of the Deutsche Telekom groups. Five generations will have to guarantee sufficient capacity for each end customer, and thanks to the experience of this pilot and the recently announced extensive investments in optical networks, we will be ready, T-Mobile’s Chief Technology and IT Director Branimir Mari.

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