PDN Session in 4G Mobile Network
PDN session (Packet Data Network session) refers to the establishment of a data connection between a mobile device and a specific Packet Data Network.
PDN session is established when a mobile device, connects to the mobile network and requests access to a specific Packet Data Network.
This allows the mobile device to get an IP address, and to access various IP-based services that are available on the connected Packet Data Network.
The PDN session has at least one EPS bearer (the default EPS bearer), and it may have one or more additional EPS bearers (dedicated EPS bearers).
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What is an ‘EPS Bearer’ in LTE ?
During 'LTE attach' procedure, the network establishes this EPS Bearer between the UE and the PGW. The PGW assigns an IP address for this Bearer. The UE uses this IP address, in order to communicate with the PDN. In addition, the PGW assigns a QoS for this Bearer, which guarantees the QoS for the data…
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Your Guide for LTE Attach procedure
After the LTE Attach Procedure ends, the following should be accomplished, LTE Attach Signaling
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Your reference for GPRS Attach Procedure
GPRS Attach procedure is the procedure in which the MS registers to the network. In other words, the network knows about the existence of the MS. After completing the process of GPRS attach, this means the following, An 'MM context' will exist on the MS, and the SGSN. This 'MM context' stores the information of…
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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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