Filter
Top Products
White Paper V600
18 August 2005
Handover in the V600
This phone is compliant with the 3GPP R99
December 2002 release.
GSM to UMTS
The product supports circuit switched voice
handover from GSM to UMTS.
UMTS to GSM/GPRS
The product supports packet switched data
handover and circuit switched voice handover from
UMTS to GSM/GPRS.
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 genera-
tions 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 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 GPRS, the V600 sends data in “packets” at a
very high speed. The phone remains connected to
the network at all times, using transmission capac-
ity only when data is sent or received.
Instead of occupying an entire voice channel for
the duration of a data session, the V600 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. The V600 is compat-
ible with GPRS R99.
The GSM system limits the ability to use all eight
time slots, so the V600 uses up to four time slots
for receiving data, and up to one slot for transmit-
ting.
Information about the identity of the phone and the
characteristics of the connection are described in
the PDP (Packet Data Protocol) context. This infor-
mation 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 the V600 has many advantages,
for example:
• 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, images etc.
• Cost efficient
Use transmission capacity only when needed,
thus reducing costs.
• WAP over GPRS
Access the Internet via WAP at high speed and
with a constant connection.
• Email over GPRS
Remain connected to an email system while
reading and preparing messages, (which are
then sent at high speed).