RRC (Radio Resource Control) in a Mobile Networks
RRC stands for Radio Resource Control, and it is the protocol that manages the control plane signaling between the user equipment (UE) and the radio access network.
The RRC protocol main functions include establishing, modifying, and releasing the radio bearers between the UE and the radio access network.
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PDP Context Deactivation Procedure
The MS, the SGSN, and the GGSN can initiate The 'PDP context deactivation procedure'. PDP Context Deactivation Procedure (MS initiated) The MS sends 'Deactivate PDP context request' to the SGSN, including the TI of the PDP. There is an information element (IE) in this message, which is the 'Teardown Indication'. If this IE exist, this…
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PDP Context Modification Procedure
In case one of any parameters associated with the PDP context changed, like the QoS as example. The node in which the PDP context is changed should initiate 'PDP Context Modification' procedure. This is in order to inform other nodes about this change. The PDP context exists on the MS, the SGSN, and the GGSN.…
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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, And the MS sends it in the 'Active PDP context request' sent to the SGSN. After the 'PDP context activation' completes, a 'PDP context' will exist on the MS, the SGSN, and the GGSN. The…
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PDP type in GPRS
PDP type is the type of the IP address assigned to the PDP. PDP type maybe one of the following, IPv4. IPv6. IPv4v6 (Dual stack). The PDP type exists in subscription information that exists in the HLR for every MS. The MS puts the requested 'PDP type' in the 'PDP activation request' sent to the SGSN…
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Your Guide for PDP context activation procedure in 3G
At the end of this procedure, 'PDP' is established between the MS and the GGSN. The GGSN assigns an IP address for this 'PDP. This is because the MS will use this 'IP address' to deal with the PDN. In addition, the GGSN should assign a Quality of Service 'QoS' for this 'PDP'. 'PDP context'…
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What is PDP, and Attach in GPRS
What is PDP To know what is 'PDP', we should know that in order for an MS to be able to send and receive data to and from the PDN, The MS should create a data session between the MS and the GGSN. This data session is called the 'PDP context', which refers to 'Packet…
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