01-09-2012, 12:02 PM
General Packet Radio Service
gprs.ppt (Size: 87 KB / Downloads: 99)
INTRODUCTION TO GPRS
GPRS will undoubtedly speed up a handset's Internet connection - but it remains to be seen exactly how much speed can be achieved out of the system .
GPRS works by aggregating a number of separate data channels. This is possible because data is being broken down into small 'packets' which are re-assembled by the receiving handset back into their original format.
GPRS stands for General Packet Radio Service , and is a relatively low cost technology that offers packet-based radio service and allows data or information to be sent and received across mobile telephone networks.
GPRS provides a permanent connection where information can be sent or received immediately as the need arises, subject to radio coverage.
GPRS SUBSCIBER TERMINALS
New terminals are required because existing GSM phones do not handle the enhanced air interface, nor do they have the ability to packetize traffic directly.
A variety of terminals will exist, as described in a previous section, including a high-speed version of current phones to support high-speed data access.
GPRS BSS
Each BSC will require the installation of one or more PCUs and a software upgrade. The PCU provides a physical and logical data interface out of the base station system (BSS) for packet data traffic.
The BTS may also require a software upgrade, but typically will not require hardware enhancement.
WORKING-RADIO INTERFACE
Each GSM radio transceiver uses Time Division Multiplexing to deliver eight voice circuits on one radio channel.
Maximum numbers are limited by many factors including - operators radio license, interference with other nearby GSM cells, cost of equipment, capacity of radio site infrastructure etc.
Each 14kbps channel may be shared by multiple 'connected' GPRS users.
GPRS MOBILE DEVICES
The key use for GPRS is to send and receive data to a computer application such as Email, web browsing or even telemetry.
To use GPRS the service is 'dialed' in a similar manner to a standard data call at which point the user is 'attached' and an IP address is allocated.
gprs.ppt (Size: 87 KB / Downloads: 99)
INTRODUCTION TO GPRS
GPRS will undoubtedly speed up a handset's Internet connection - but it remains to be seen exactly how much speed can be achieved out of the system .
GPRS works by aggregating a number of separate data channels. This is possible because data is being broken down into small 'packets' which are re-assembled by the receiving handset back into their original format.
GPRS stands for General Packet Radio Service , and is a relatively low cost technology that offers packet-based radio service and allows data or information to be sent and received across mobile telephone networks.
GPRS provides a permanent connection where information can be sent or received immediately as the need arises, subject to radio coverage.
GPRS SUBSCIBER TERMINALS
New terminals are required because existing GSM phones do not handle the enhanced air interface, nor do they have the ability to packetize traffic directly.
A variety of terminals will exist, as described in a previous section, including a high-speed version of current phones to support high-speed data access.
GPRS BSS
Each BSC will require the installation of one or more PCUs and a software upgrade. The PCU provides a physical and logical data interface out of the base station system (BSS) for packet data traffic.
The BTS may also require a software upgrade, but typically will not require hardware enhancement.
WORKING-RADIO INTERFACE
Each GSM radio transceiver uses Time Division Multiplexing to deliver eight voice circuits on one radio channel.
Maximum numbers are limited by many factors including - operators radio license, interference with other nearby GSM cells, cost of equipment, capacity of radio site infrastructure etc.
Each 14kbps channel may be shared by multiple 'connected' GPRS users.
GPRS MOBILE DEVICES
The key use for GPRS is to send and receive data to a computer application such as Email, web browsing or even telemetry.
To use GPRS the service is 'dialed' in a similar manner to a standard data call at which point the user is 'attached' and an IP address is allocated.