Concept in Definition ABC

On Latin America Cellular is the device that in Spanish in Spanish is called mobile, but despite the normal dialect differences, it is the same apparatus: a mobile phone that uses the technology cell phone to stay on communication.

Cellular technology is based on radio stations, each with its corresponding coverage area, which overlap to cover a wide territory, forming what are called cells or cells (and hence their Name).

This technology was perfected and applied to mobile telephony in the late sixties, early seventies of the twentieth century. And I say "perfected" and "applied to" instead of invented, because really the cellular technology that allows the operation of our mobile phones is nothing more than a evolution of older radio technologies.

While the first modern mobile phone call was made on April 3, 1973 by Motorola technicians, the first Commercial precedents for this technology have their roots in the 1940s, when some American cities were launched radio telephony services that allowed calls from cars (where the phones were installed) to fixed telephones.

Little autonomy to speak and a limited scope in terms of radius of action were the characteristics of this service. The former USSR (and by extension Eastern Europe), Japan and the Nordic countries also explored their own mobile phone systems based in cellular communication technology, but it is unanimously considered that this began its definitive takeoff with that call made in the spring from 73.

Each of the connection points, linked together by a dedicated network, which can be wired, are called base stations.

Such base stations may be highly visible, with dedicated towers, or they may be more camouflaged among the urban furniture, so that they go more unnoticed by integrating better with the environment.

Generally, the connection of these base stations to the operator's network is done by means of a optical fiber, while the connection to mobile phones is made by radio waves at certain frequencies.

These frequencies are regulated by organizations, generally governmental, that ensure the coexistence of various services in the radioelectric space, such as analogue television, digital television (the first is extinguished in favor of the second), or mobile telephony between others.

This is the reason why, historically, different frequencies have been used in different parts of the world, causing problems or, directly, the impossibility of using a mobile phone (cell phone) prepared for one market, in another different.

Fortunately, and due to the globalization, the differences are disappearing, and today it is possible to buy a cell phone in any market and use it in a different one.

The key to cellular technology is in the roaming, which consists of the terminal (the telephone that the user has) automatically connects to the next cell in when you are about to leave the coverage of which you are currently connected, being able to maintain communication while moves.

This is possible because the coverage overlaps slightly, and communication is switched over the network to the cell from which the phone receives the strongest signal, while it is still connected to the one offering the signal, so the terminal never disconnects from one to then connect to the next, since with this, the sign.

Without fear of falling into an exaggeration, the cell phone has undoubtedly been one of the greatest inventions of the last century, since through the cell phone we can not only keep in touch with our friends and family at any time and in any place, but it has also served to tell the world, for example, news that by the remote place in which They would have been impossible to comment if there was not someone with a cell phone there and also although with a more superficial side the cell phone has served many to close important business.