GSM GPRS (General Packet Radio Services)
GPRS terminals can provide up to 150-170kbps data speeds downstream, but realistically they currently only have a maximum downstream speed of 50kbps and upstream 10-28kbps.Speeds will also depend on which GPRS version an operator uses, as well as how busy the network is at a particular time.
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 directly to Internet
A class B terminal means that in the idle mode, there is a choice of whether to make a voice call, which would be with a circuit switched connection or whether to transmit data, which would be sent in a packet format.
Users will also benefit from fast
and easy up to 170 kbps
data access to different services.
Motorola's GPRS solution
introduces two new network nodes into the GSM PLMN (Public Land Mobile Network)
- the SGSN and the GGSN.
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.