2.5G (GPRS)


GPRS (English abbreviation: General Packet Radio Service, GPRS) is a technology that allows sending and receiving data faster than the use of technology Circuit Switch Data, or CSD. Merging cellular phone service with GPRS (General Packet Radio Service) to produce a new generation of so-called 2.5G. GPRS system can be used for data transfer (in the form of data packets) associated with e-mail, data, picture (MMS), Wireless Application Protocol (WAP), and the World Wide Web.

GPRS is a packet-based transmission system for GSM, which uses the principle of ‘tunneling’. It offers a higher data rate. Data rate is roughly up to 160 kbps as compared to 9.6 kbps can be provided by a series of GSM tersakelar. Multiple radio channels can be allocated to a user and the same channel can also be used with shared among users, so be very efficient. In terms of cost, price refers to the volume of usage. Users being charged in relation to the number of bytes sent or received, regardless of the call, so GPRS is possible will be more likely to be chosen by customers to access IP services instead.

GPRS is the new technology that enables operators of mobile communications networks offer data services with higher bit rates with low rates, thus making data services become attractive to the mass market. The mobile communication network operators outside the country now sees the GPRS as a key to developing mobile communications market to new competitors in the land that once belonged to the cable networks, namely Internet services. This condition is possible because the explosion of Internet usage via a network cable (telephone) can also be done via the mobile network. Mobile services are now successful in the marketplace is, weather reports, ordering food, sports news up to the important news daily. From these developments, it can take effect on the emergence of HP by various providers that compete to offer more affordable GPRS tariffs.

In theory promises GPRS speeds ranging from 56 kbps to 115 kbps, allowing Internet access, multimedia data transmission to a computer, [[the notebook]] and [[handheld computer]]. However, its implementation, it depends on the following factors:
-Configuration and allocation of time slots at the level of BTS
-Software used
-Supported features and applications that use mobile phones

This explains why at certain moments and in certain locations GPRS access was slow, even slower than that CSD has access 9.6 kbps speed.

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