
- by Royal flower
This information is VERY IMPORTANT for you and your children, for all of us.
To begin with, what is a 5G network?
– 5G is the natural evolution of 2G, 3G and 4G networks. But it’s not just an evolution, it’s a revolution in a sense. Partly because 5G networks open us up to opportunities that didn’t exist before. It is not just an advantage in terms of increased bandwidth, which we were not able to get before, but also ultra-high-speed data transmission with very little signal delay, as well as the ability to allocate specific segments of the network, where a dedicated channel of communication is provided for individual subscribers.

So far nothing seems to be wrong. Super-fast data transfer, that’s all.
But let’s dive deeper into this.
Frequency Aggregation and Frequency Manager
5G will use a whole set of available frequency bands. Frequencies in the bands below 1 GHz, particularly 694-790 MHz, will be used outside of major cities because of the large coverage area. Frequencies in the 1 GHz to 6 GHz bands, particularly 4.4-3.8 GHz, 4.4-4.99 GHz and 5.9 GHz, will provide coverage in major cities.
Frequencies in the millimeter band (above 24 GHz) – 24-29.5 GHz, 30-55 GHz, 66-75 GHz, 81-86 GHz, will be suitable for point coverage in places of the greatest accumulation of subscribers: airports, train stations, stadiums, etc.
The essential feature of 5G is that it requires a wide range of frequencies, depending on the application and the environment.
The frequency spectrum for 5G can be divided into three groups, depending on what the networks will be used for.
The first group is the range below 2 GHz. The range of the transmitter can reach several kilometers. However, the maximum data rate is no more than 100 Mbps. Suitable for coverage of larger areas, provides a stable signal indoors. Applicable for mass machine-to-machine communication (mMTC), Internet of things, because they do not generate very large amounts of traffic, but require ultra-reliable connection and low latency.
The second group is the medium band, or so-called C-band, with frequencies from 2 to 6 GHz. The range is from a few hundred meters to 1-2 km. Provides a relatively stable signal indoors and a fairly high data rate. This range is considered optimal for 5G network coverage in urban areas. Suitable for both the Internet of things and machine-to-machine communication, as well as for user applications that do not require high data rates.
The third group is ultra-high frequencies, above 6 GHz. Engages wide frequency bands and provides high channel bandwidth. It is suitable for services requiring a high data transfer rate, up to 20 Gbps – 3D-video, augmented reality, holographic communication, haptic Internet and so on. However, the range of the signal – within direct line of sight between the transmitter and the receiving device – is no more than 200 meters. In addition, the signal does not pass through walls, and also fades under the influence of certain weather conditions, such as rain. That is why full development of this segment requires a high density of transmitters.
That is why most countries allocate different frequency spectrums – both below 6 GHz and above – for the development of fifth-generation networks. In 2015, at the World Radiocommunication Conference (WRC-15), countries agreed to allocate frequencies for 5G in the spectrum up to 6 GHz. The European Union defined a range of 3.4-3.8 GHz; South Korea, 3.4-3.7 GHz; and Australia, 3.4-3.7 GHz. Japan and China stood out: they decided to develop two spectrums below 6 GHz at once. Japan – 3.6-4.2 GHz, and 4.4-4.9 GHz. China – 3.3-3.6 GHz and 4.8-5 GHz.
The U.S. in the development of 5G in general stand apart. The root frequency range of the fifth-generation networks there is supposed to make the ultra-high frequencies. The U.S. has already held two auctions for 5G spectrum frequencies above 6 GHz. The 24 GHz and 28 GHz spectrum frequencies have been sold. Later this year, auctions are planned for three more ultra-high frequency bands: 37, 39 and 47 GHz.