Many people think about how cellular networks work, what happens when we press the call button? When calling each other, the often called subscriber is not only within the same city, but even on another continent. How does cellular communications work?
PRINCIPLE OF ACTION OF CELLULAR COMMUNICATIONS
In most of the territory of our country, mobile communications equipment is located, it is called base stations. They are clearly visible in open areas – in the fields between settlements. In the city, they are often placed on the roofs of buildings. The base station is able to pick up the signal from the smartphone at a distance of up to thirty-five kilometers, the contact between the towers is carried out by means of a special service or voice signal.
The active development of mobile communications has created a problem of limiting the frequency, namely, the working channels located close to each other began to overlap, creating interference. Continue reading