Patent ID: 11963044
Assignee: SK TELECOM CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. An operation method of a master User Plane Function (UPF), the method comprising:
receiving, from a Session Management Function (SMF), a data session-related request for data session control relating to a data session of a particular terminal;
controlling, at the master UPF, data session of the particular terminal in response to receiving the data session-related request for data session control related to the data session of the particular terminal;
generating particular information based on master operation information relating to the data session control when the data session-related request for data session control is received at the master UPF from the SMF, wherein the master operation information, received with the data session-related request for data session control, includes data session information of the data session of the particular terminal, service requirement information and master and slave interconnection information which includes address information of a first slave UPF and next-hop address information of a second slave UPF recognized to be directly connected to the first slave UPF, wherein the SMF is to provide the master operation only to the master UPF;
receiving, at the master UPF, a data packet through the data session of the particular terminal; and
inserting, at the master UPF, generated particular information, which includes the data session information of the data session of the particular terminal, the service requirement information, the address information of the first slave UPF and the next-hop address information of the second slave UPF, into a header of the data packet received, at the master UPF, through the data session of the particular terminal, and transferring the data packet having the generated particular information to the first slave UPF that is identified from the master operation information received based on the data session-related request for data session control received at the master UPF from the SMF.