Patent ID: 11877187
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method performed by a master Radio Access Network (RAN) node, the method comprising:
receiving a PDU session resource setup request message from an Access and Mobility Management Function (AMF) in a core network, the PDU session resource setup request message including first information indicating either split of a PDU session is permitted or split of the PDU session can be performed, the PDU session being established between a radio terminal and a User Plane Function (UPF) in the core network; and
sending, to the AMF, a PDU Session Resource Modify Indication message requesting modification of the PDU session, wherein
the PDU Session Resource Modify Indication message is used to indicate to the AMF that the already established PDU session is to be split over a plurality of tunnels, and
the PDU Session Resource Modify Indication message includes a list of one or more Quality of Service (QoS) flows associated with the split of the already established PDU session.