|GPRS protocols described here
||Broadcast Call Control
||BSS Application Part Plus
||Base Station System GPRS Protocol
||Group Call Control
||GPRS Mobility Management
||GPRS Session Management
||GPRS Tunneling Protocol
||Logical Link Control
||Radio Link Protocol
||Short Message Service Cell Broadcast
||Sub-Network Dependant Convergence Protocol
||Tunnelling of Messages
||Transcoding Rate and Adaption Unit
for a description of SS7 protocols.
for a description of GSM protocols.
For more information on GPRS decoding and analysis
GPRS (general packet radio service) is used
as a data services upgrade to any GSM network. It allows GSM
networks to be truly compatible with the Internet. GPRS uses
a packet-mode technique to transfer bursty traffic in an efficient
manner. It allows transmission bit rates from 9.6 Kbps to more
than 150 Kbps per user.
The two key benefits of GPRS are a better
use of radio and network resources and completely transparent
IP support. GPRS optimizes the use of network and radio resources.
It uses radio resources only when there is data to be sent or
received. As a true packet technology it allows end user applications
to only occupy the network when a payload is being transferred,
and so is well adapted to the very bursty nature of data applications.
Another important feature of GPRS is that it provides immediate
connectivity and high throughput.
Applications based on standard data protocols
such as IP and X.25 are supported. In GPRS four different quality
of service levels are supported. To support data applications
GPRS utilizes several new network nodes in addition to the network
nodes in the GSM PLMN. These nodes are responsible for traffic
routing and other interworking functions with external packet-switched
data networks, subscriber location, cell selection, roaming
and many other functions that any cellular network needs for
The GPRS is illustrated
here in relation to the OSI model:
Click the protocols on the map to
see more details.
GPRS Family Protocol Information
| BSSAP+ | BSSGP
| GCC | GMM
| GSM | GTP
| LLC | NS
| RLP | SMSCB
| SNDCP | TOM