Sony Ericsson T68i, Белая книга

Страница: 25 / 71

T68i
White Paper, April 2002
25
Mobile positioning
The geographic location of mobile subscribers
can be used to provide them with related
information and a variety of services. Sony
Ericsson’s Mobile Positioning System (MPS)
gives operators a fast and cost-effective way to
establish and roll out location-based services.
For users of the T68i, the integration of mobile
positioning with WAP services means that a
complete range of service and information tools
is available.
More information regarding possibilities with and
technologies for mobile positioning is available at
http://www.SonyEricssonMobile.com/mps.
General Packet
Radio Services
The introduction of GPRS (General Packet Radio
Services) is one of the key steps in the evolution
of today’s GSM networks for enhancing the
capabilities of data communication. Data traffic
is increasing enormously (over both wired and
wireless networks), with the growth in demand
for Internet access and services paralleling that
for mobile communications. Users want access
to the Internet while they are away from their
offices and homes, and surveys have found that
the vast majority of business professionals want
the ability to send and receive e-mail, browse the
Web and transmit text and graphics on a
portable device. That is why the main
applications driving Mobile Internet development
are e-mail clients and Web browsers.
The demand for high-speed Internet access will
be the key driver for coming generations of
wireless services, and GPRS can deliver the
necessary speed. GPRS allows innovative
services to be created, enabling new and
previously inaccessible market segments to be
addressed and increasing customer loyalty.
GPRS applications can be developed as both
horizontal and vertical. Vertical applications are
specific, including those for operations such as
reaching police and emergency, taxi, delivery or
automated services (vending machines,
supervision, vehicle tracking). Horizontal
applications are more generic and include those
for Internet access, e-mail, messaging, e-
commerce and entertainment.
GPRS is able to take advantage of the global
coverage of existing GSM networks.
Applications developed for GPRS can be
deployed on a large scale and can reap the
associated benefits. GPRS also provides a
secure medium for connections to private
networks, banking and financial services.
With GPRS, the T68i sends data in “packets” at a
very high speed. The T68i remains connected to
the network at all times, using transmission
capacity only when data are sent or received. For
details, see “GPRS technical data” on page 63.