Gprs

Positioning methods are already used to support location-based information services such as

©YellowPages, restaurant guides, traffic information, directions and friend finder

White Paper M600

applications. Typically SMS or voice has been used as delivery mechanisms. Java™ and MMS will add new possibilities to deliver attractive location- based applications.

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, M600 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, M600 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. M600 is compatible with GPRS R99.The GSM system limits the ability to use all eight time slots, so M600 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 M600 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, images etc.

•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).

59	February 2006