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White Paper W950
45 June 2006
Preliminary version - PA4
GPRS
The introduction of GPRS was a big step in the
evolution of the GSM networks for enhancing the
capabilities of data communication. Data traffic has
increased (over both wired and wireless networks),
with the growth in demand for Internet access and
services paralleling that of mobile communications.
We can now see that the demand for high-speed
Internet access is the key driver for coming
generations of wireless multimedia and
entertainment services, and GPRS is important as
a stepping stone when we enter the 3G network
era. GPRS has allowed innovative services to be
created and granted access to new and previously
inaccessible market segments, which will be
further developed with 3G.
GPRS is able to take advantage of the global
coverage of existing GSM networks. Applications
developed for GPRS have been deployed on a
large scale and have thus reaped the associated
benefits.
With GPRS, W950 sends data in “packets” at a
very high speed. The phone remains connected to
the network at all times, using transmission
capacity only when data is sent or received.
Instead of occupying an entire voice channel for
the duration of a data session, W950 sends and
receives data in small packets, as needed, much
like IP on the Internet. Thanks to this, the phone is
always online, using transmission capacity only
when data is sent or received. W950 is compatible
with GPRS R99.The GSM system limits the ability
to use all eight time slots, so W950 uses up to four
time slots for receiving data, and up to one slot for
transmitting.
Information about the identity of the phone and the
characteristics of the connection are described in
the PDP (Packet Data Protocol) context. This
information is stored both in the phone and in the
mobile network, so that each phone is identified
and “visible” to the system.
Using GPRS with W950 has many advantages:
• Constant connection
Keep an open connection to an email system or
the company network, staying online to receive
and send messages at all times. All connection
settings can be managed by using the data
connections feature.
• High speed
Gain access automatically to increased band-
width when downloading large files such as
images.
• Cost efficient
Use transmission capacity only when needed,
thus reducing costs.
• Email over GPRS
Remain connected to an email system while
reading and preparing messages, (which are
then sent at high speed).
Symbian OS operating system
Symbian OS is the open operating system licensed
by the world's leading mobile phone
manufacturers. It is designed for the specific
requirements of advanced 2G, 2.5G and 3G mobile
phones. Symbian OS combines the power of an
integrated applications environment with mobile
telephony, bringing advanced data services to the
mass market.
Symbian OS supports a wide range of device
categories with several user interfaces, this
includes UIQ, which is the software platform used
by W950.