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GSM GPRS

GSM's new GPRS (General Packet Radio Services) data transmission technology is optimized for "bursty" datacom services such as wireless Internet/intranet and multimedia services. It is also known as GSM-IP (Internet Protocol) because it will connect users direct to Internet Service Providers.

One of the main benefits of this new packet-switched technology is that users are always connected, always on-line, and may be charged only for the amount of data that is transported. Voice calls can be made simultaneously over GSM-IP while a data connection is operating.

Users will also benefit from fast and easy 114 kbps data access to different services.

Ericsson for example offers a robust IP end-to-end GPRS solution with open interfaces enabling integration into multi-vendor networks.

The company's GPRS solution also offers leading-edge security for wireless use of intranet and corporate LAN services.

GPRS is a smooth add-on to integrate into existing networks. For new operators, it's also attractive to launch GPRS networks to provide competitive datacom services.

Ericsson has already taken more than five agreements for another complementary wireless technology for datacom services: HSCSD (High Speed Circuit Switched Data), which is especially well suited for real-time services and transferring of larger amounts of data, such as video-based services.

Motorola's GPRS solution introduces two new network nodes into the GSM PLMN (Public Land Mobile Network) - the SGSN and the GGSN.

A number of new interfaces are added to connect the SGSN and GGSN to the appropriate GSM and non-GSM elements required to provide global packet data service.

Motorola's GPRS infrastructure solution is designed around a powerful IP routing engine, providing operators with a scalable and flexible solution that can tailor the packet switching capability in line with the predicted data subscriber growth.

The SGSN tracks packet capable mobile locations, performs security functions and access control. The GGSN interfaces with external packet data networks (PDNs) to provide the routing destination for data to be delivered to the subscriber's mobile terminal and to send mobile-originated data to its intended destination.

The GGSN is connected with SGSNs via an IP-based GPRS backbone network. The PCU performs radio functions and GPRS network functions. The PCU interfaces to the OMC-G, base station controller and SGSN.

Earlier in 1999, Motorola and Cisco Systems Inc., the worldwide leader in networking for the Internet, announced a strategic alliance to develop and deliver a New World framework for Internet-based, wireless networks. This collaboration will deliver the first all-IP platform for the wireless industry, which unites different standards for wireless services worldwide, and introduce an open, Internet-based platform for integrated data, voice and video services over cellular networks.

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