They tested the LTE line-up in Prague, and for five years I will cover the whole Czech Republic

It is a big step towards smart cities, smart transport and smart wearable electronics. Special data with the ability to energy-efficiently transfer data, and the connected device can last for months or months on the battery. The test of the novelty in the infrastructure of the Czech operator was successful according to the techniques.

About the fact that in the future cars, traffic lights, street lamps, parking lots and you even garbage can communicate via the Internet, you have determined it many times, but apart from several completely unique projects (eg smart parking in Cologne), they are nowhere to be found in them. relnm prosted did not meet. The technical measures so far were the high energy requirements of all necessary communication sensors and usually their price.

Both of these complications should help eliminate the new type of LP WAN (Low Power Wide Area Network). One of them is with Narrow Band IoT (according to her only shortened NB-IoT), which was tested by O2 in recent days in the Czech Republic and in which it wants to launch its first projects for five years. It is a relatively young technology, the standardization was not completed until June of this year.

The LTE group will run on the current infrastructure

With NB-IoT, it has the advantage that it can be run on the existing infrastructure of mobile operators – the right software on transmitting stations is reserved for LTE fonts. It is therefore not necessary to install new antennas and transmitters, hundreds of software updates and added elements on the part of the st.

The concurrence of the current operation on the mobile infrastructure with the added NB-IoT was the subject of testing, first in laboratory conditions, later also on several BTS in live operation. It had to be (un) disturbed with the current services, compatibility with the various types of owl elements used, especially storage stations (BTS) and thus the most suitable system configuration.

When the current NB-IoT setting of the LTE throughput is set to a given BTS by 5 – 8 percent, the channel created in this way will be able to enter the connectivity of remote print sensors, sensors and other elements of the Internet, incl.

Pro nesta klasick 4G / 3G st?

The basis of all the smart internet solutions are thousands of simple devices (in a waste container, under a parking space, etc.), which need to give the system a small amount of data, often just a space and hundreds of apartments. It is very inefficient to use a traditional 4G / 3G connection for such data transfers. And for two reasons.


The left arrow points to the psma and its use NB-IOT communication sensor (sends values ​​10x per second), then 20 Mbit / s transmission from the smartphone via LTE.

First, the data. When the 4G / 3G data transfer of this previous communication is prepared, it opens a channel, which then carries out the data transfer. After him, the pichz gave a phase of communication systems, which closes and closes this channel. In the case of a device, this own ballast communication would contain more data, not would contain its own transmission. If we wanted to implement the communication of tens of thousands of devices on one transmitter station (BTS), their capacity would be used only by this ballast communication and there would be no city left to handle other transmissions (classic data streams for smartphones, tablets and LTE routers). Zbyten.

The kind of inefficiency would be energetic. Firstly, because the transmission of more data requires more energy to send them, and secondly, because the 4G / 3G standard keeps all end devices connected to the transmitting stations, or they are often heard. Small amounts of data are transferred very often and the communication modem device must be constantly active, which of course consumes energy. If the food is to send one data per hour, or you per day, it is absurd to communicate constantly.

And first in these areas, the benefits of LP WAN st, ie NB-IoT. Data is sent straight away without ballast communication around, data packets provided with an identifier are sent straight away and without prior processing. The modem is active only for the moment of transmission and immediately sweats again. It took me years to work on the battery for years.

In some cases, it will be possible (or necessary) to combine both technologies. For example, the car can be connected via NB-IoT during parking (check security status, battery level, position, etc.) and after start-up, switch to LTE to offer all online services in a free system. It is similar to some of the idel. Most of the time you can communicate with NB-IoT and, if necessary, activate the modem, transfer this volume of data (video, audio) via LTE and then LTE modem again.

Connected to a single use

According to Vlav Provaznek, the director of O2 IT Services, the future is equipped with an integrated SIM card. You buy the given sensor or the device and its start (even by subscribing to the service of the device manufacturer) activates the built-in SIM and back its connection to the Internet. The fear that for each smart device and each sensor the user will have to arrange the tariff with the operator is, according to Provaznek’s opinion, odd.

In addition, Milan Barv from CETIN anticipated that the price of communications and sensors would fall so much that single-wearable electronics would appear on the market. It will work for the life of the built-in battery (which can be years) and then replace it with another, because any repair and related logistics would be unprofitable. The advantage of this concept is, of course, water resistance (and even the possibility of washing), the electronics can be encapsulated (eg in plastic) and moisture will not have to get anywhere. Let us leave the question of ecology aside, the role of the take-back of these products and the recycling of materials will play a crucial role.

The first pilot projects are in five years

On the technical side, according to O2 Pezinka’s mobile manager, Libor Pezinka could be launched very quickly with NB-IoT;

Pilot projects will include, for example, smart rubbish bins that will monitor fullness and develop as needed. Sensors will be installed in parking spaces (electronic puck locked into the roadway) so that the driver can see the occupancy in real time on the map.

It opens up the possibility of fitting kiosks, especially those I frequented by, sensors that detect the car blinking and give traffic lights so that as few vehicles as possible get red. And so you can dream of fuel consumption, noise and the environment.

All acquired data will be statistically processed and used as a basis for the implementation of urban projects and services.

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