Quite often, users confuse two concepts – GPRS and GPS, which, in general, is not surprising, given the difference in just one letter. In fact, these two terms have practically nothing in common with each other, so you can not confuse them. We already talked about what GPS is, but we have not yet written about GPRS.
GPRS (from the English General Packet Radio Service – General Packet Radio Service) is an add-on to GSM mobile communication technology that allows packet data transmission. GPRS allows you to exchange data with other devices in the GSM network, as well as external networks, which include the Internet. At the same time, the transmitted and received information is charged, and not the time spent online.
The principle of operation of GPRS is simple. Information is collected in packets and transmitted through voice channels that are not currently used, which in turn allows more efficient use of GSM network resources. Since the process involves the use of several communication channels, the data transfer rate can be relatively high – in theory, up to 171.2 kbit / s, although in practice the speed is usually somewhat lower.
It is interesting that the delay in data transmission in this technology can occur because several subscribers can use one channel at once. In this case, a queue for packet transmission may occur, which in turn leads to a delay in data transmission. The maximum number of subscribers who use one time slot is 80.
Generally speaking, the GPRS operation is similar to the Internet, where the data is divided into packets and sent to the recipient, after which they are assembled.
- Mobile internet access.
- Satellite monitoring of transport.
- Mobile access for employees to remote databases, servers, corporate networks.
In the case of a regular user, GPRS is one of the ways to access the Internet, although outdated at the current time. GPRS is supported by almost all phones, including the cheapest.