Category: Session Management
PDP Context Deactivation Procedure
The MS, the SGSN, and the GGSN can initiate The ‘PDP context deactivation procedure’. PDP Context Deactivation Procedure (MS initiated) […]
PDP Context Modification Procedure
In case one of any parameters associated with the PDP context changed, like the QoS as example. The node in […]
Session Management states in GPRS (2G and 3G)
For an MS to be able to send and receive data to and from the PDN, it must have an […]
NSAPI and TI – PDP identifiers
NSAPI NSAPI refers to ‘Network layer Service Access Point Identifier’. The MS generates the NSAPI in the ‘PDP context activation’ procedure, […]
QoS ‘Quality of Service’ in GPRS
QoS refers to ‘Quality of Service’. After ‘PDP context activation’ procedure completes, a ‘PDP context’ shall exist on the MS, […]
PDP type in GPRS
PDP type is the type of the IP address assigned to the PDP. PDP type maybe one of the following, […]
PDP address in GPRS
As a result of the ‘PDP activation’ procedure, the GGSN assigns the ‘PDP context’ an IP address. The ‘PDP address’ […]
APN – what is it in a mobile network ?
APN refers to ‘Access Point Name’, and it is the logical name of the network, which the mobile network users […]
GTP tunnel and TEID
TEID refers to ‘Tunnel End Point Identifier’. After creating a PDP context between the MS and the GGSN, the data […]
Direct Tunneling in 3G
In order to reduce the load of passing the user plan data by the SGSN, the SGSN may decide to […]