PDU Session Establishment
The UE receives data services through a Protocol Data Unit (PDU) session, which is a logical connection between the UE and core network. In a PDU session establishment, the UE establishes a PDU session for accessing data services. Unlike EPS, where a default PDU session is always created while the UE registers to the network, in 5G, the UE establishes a PDU session when service is needed.
The following feature is related to this use case: