Gprs - Sony Ericsson D750i White Paper

Specifically, the following built-in applications are
enabled to work with the Memory Stick: Integrated
2.0 Megapixel camera, pictures, media player,
email (attachments), MMS (media), browser,
telephony (ringtones).
Compatibility with other Memory
Stick devices
The phone follows the file system layout that is rec-
ommended by the Memory Stick organisation for
pictures and sounds. This ensures interoperability
with all devices following the same standard.

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 fast Internet
access is the key driver for coming generations of
wireless multimedia and entertainment services.
GPRS is able to take advantage of the global cov-
erage of existing GSM networks. Applications
developed for GPRS have been deployed on a
large scale and have thus reaped the associated
benefits.
With a GPRS subscription, transmission capacity is
only used when data "packets" are sent or received
via a connection.
Instead of occupying an entire voice channel for
the duration of a data session, the product sends
and receives data in small packets, as needed,
much like IP on the Internet. Thanks to this, the
phone appears to be always online, using transmis-
sion capacity only when data is sent or received.
The phone is compatible with "3GPP™(3rd Gener-
ation Partnership Project) Release 1999".
The phone uses up to four time slots for receiving
data, and two slots for transmitting.
Phone identity information and characteristics of
the connection are described in the PDP (Packet
Data Protocol) context. This information is stored
For devices that do not follow the same standard
as Memory Stick Duo and Memory Stick PRO Duo,
interoperability is possible by accessing the same
folder structure. For a PC or Mac, this is easily
done by browsing to the required folder on the
Memory Stick. Memory Stick enabled devices that
lack browsing capability may be unable to share
data with the phone.
both in the phone and in the mobile network, so
that each phone is identified and "visible" to the
system.
Using GPRS has many advantages, for example:
• Cost efficient
Use transmission capacity only when needed,
thus reducing costs.
• WAP over GPRS
Access the Internet via WAP at high speed.
• Email over GPRS
Remain connected to an email system while
reading and preparing messages, (which are
then sent at high speed).
• Data communication
Transfer data and access the Internet or an
intranet with a computer, PDA or handheld
device connected via Bluetooth wireless tech-
nology, infrared or cable.
• Provide settings
Receive GPRS configuration settings from the
provider OTA (over the air), making manual con-
figuration unnecessary.
• User-controlled settings
Take advantage of full user control in the data
connections menu, establishing multiple
descriptions and accessing advanced settings
for GPRS.
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White Paper D750i
March 2005