Transfer of PDU Session Information for Uplink Data Packets

The Transfer of PDU Session Information for uplink data packets involves transfer of control information elements related to the PDU Session from NG-RAN to UPF.

An UL PDU Session user plane instance that makes use of the transfer procedure is associated to a single PDU Session. This procedure is invoked whenever packets for that particular PDU Session need to be transferred across the related interface instance.

The UL PDU SESSION INFORMATION frame includes a QoS Flow Identifier (QFI) field associated with the transferred packet.

The following frame shows the respective UL PDU SESSION INFORMATION.