Specifications

White Paper V800-Vodafone V802SE
19 August 2004
Handover in the V800-Vodafone V802SE
This phone is compliant with the 3GPP R99
December 2002 release.
GSM/HSCSD to UMTS
The phone supports circuit switched data hand-
over from GSM/HSCSD to UMTS.
UMTS to GSM/HSCSD
The product supports circuit switched data hand-
over from UMTS to GSM/HSCSD.
GSM/GPRS to UMTS
The product supports packet switched data
handover and circuit switched voice handover from
GSM/GPRS to UMTS.
UMTS to GSM/GPRS
The product supports packet switched data
handover and circuit switched voice handover from
UMTS to GSM/GPRS.
Positioning
The basic cost-efficient positioning method availa-
ble in both 2G and 3G networks relies on measur-
ing round trip time. In 2G it is called Cell-ID + TA
and in 3G Cell-ID + RTT. In 3G networks it will be
more accurate than in 2G due to smaller steps in
round trip time and the fact that measurements
from 2 cells can be obtained during soft handover.
To obtain a more accurate position time difference
measurement, several base stations can be used.
These positioning methods are already used to
support location-based information services such
as Yellow pages, restaurant guide, traffic informa-
tion, directions and friend finder applications. Typi-
cally WAP, SMS or voice has been used as delivery
mechanisms, MMS will add new possibilities to
deliver attractive location-based applications.
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.