What is the GPRS full form?
GPRS stands for general packet radio service. It is based on GSM infrastructure. Becomes very popular, because of access to internet over wireless medium. A mobile phone with sim card provides voice and internet services to the user. With this service, internet packets flow from device to the internet service provider. Enables a user to browse websites , make voip calls, connect on VPN etc. Initially telecom network was supporting only voice, then a separate core network was developed for mobile data or packer service over GSM. Full form says that GPRS enables packet based service over radio interface. Which means over mobile device which connects to the mobile network over radio interface.
How GPRS works ?
Network for packet service:
As like any other service over GSM, GPRS also uses standard protocols and procedures. These are define in European Telecommunications Standards Institute(ETSI). Mobile devices having settings for GPRS profile and mobile network have GPRS settings configured in data base. On roaming side a dedicated node called SGSN added for GPRS registration and internet packet flow from device to home network and vice versa. In LTE, the node is replaced with MME. In home network, HLR updated with GPRS functionalities an new node GGSN has been added. For HLR, HSS and for GGSN , PGW are the nodes in LTE network.
In 3G architecture SS7 protocol and GTP ( version 0 and 1) are used , while in 4G Diameter protocol and GTP (version 1 and 2 ) are used.
GPRS Profile settings:
To access internet a mobile subscriber should have GPRS subscription. HLR is the node which holds the subscription. The subscription includes , Quality of service, access point name etc. Upon GPRS registration by the phone, roaming network downloads the subscription profile.
GPRS internet speed :
The data speed depends on the generation using GPRS network. For 2G its slowest and 4G its fastest. The next network is 5G that will brig more data speed over GPRS.