GPRS - the key to the evolutionary transition to third generation system
Total General Packet Radio Service (General Packet Radio Services - GPRS) is a new system for packet data systems for GSM, providing operators an excellent opportunity to successfully penetrate the mass market in a capricious wireless data services. More importantly, the operator of the GSM network does not require significant effort to modernize the infrastructure of the core network to provide support services to GPRS. Implementation of GPRS based on the existing GSM platform would not only broadcast the data to the existing set of operator services, but also to prepare its network for implementation in the near future, standard systems W-CDMA (wideband CDMA) in the range 2 GGI.
What determines success in the market radio access network Internet? Currently, mobile data is not yet widespread. Nevertheless, in certain markets among different segments of users began experiencing a rapid growth. Most of the growth determines the market of corporate users who are beginning to use mobile data services as they are accustomed to use the data transmission in fixed-line networks. You can list the following basic premise growing popularity of mobile data services:
the need for flexibility of the models of the companies;
need to access data sharing while traveling
achieves considerable savings in time
In addition, several major factor in the use of networks goes lnternel / intranet for various applications associated with the transfer of data - work with these networks can use a large number of standard software. Using e-mail has long been the rule in the companies, and lately has been a steady increase in the number of individual users' e-mail.
In addition, we can not take into account the huge potential of specialized "vertical" applications such as electronic commerce, movement control and surveillance of the movement of goods in road transport.
The system will provide GPRS packet switching throughout the channel of communication from the mobile terminal subscriber and above, significantly optimizing data transmission services in networks' GSM, especially given the intermittent nature of the traffic in the networks of lnternet / Intranet. The connection will be established almost instantly, and users will pay for the actual amount of data transferred rather than connection time.
GPRS uses network resources and occupies a plot of the frequency range only at the actual data that provides an extremely efficient use of available bandwidth and can share a single channel among multiple users.
GPRS system supports all the most common data transfer protocols on the network, in particular, Internet-protocol IP, which will allow subscribers to a network connected to any source of information in the world with a mobile terminal GPRS.
GPRS will provide seamless connectivity such as through interfaces TCP / IP or X.25 with existing data transmission systems that will support a wide variety of applications: from low-speed messaging system to work with high-speed corporate LAN.
So, what changes should occur in the core network to ensure the transition to GPRS?