Granted Patent B2

US 12,563,122 · App. 18/717,994 · Granted Feb 24, 2026

Inventors: Kisuk Kweon (Suwon-si, KR); Sangsoo Jeong (Suwon-si, KR)

Assignee: Samsung Electronics Co., Ltd.

H04L67/141H04L67/146H04W76/10

Abstract

Claims (47)

1 . A method performed by a session management function (SMF) in a wireless communication system, comprising:

transmitting, to a second SMF, an SM context including a group identifier (ID);

transmitting, to a user plane function (UPF), a message requesting a packet forwarding control protocol (PFCP) session context including the group ID; and

receiving, from the UPF, a response message to the request message.

2 . The method claim 1 ,

wherein the group ID includes information about priority, and

wherein the information about the priority is bit information.

3 . The method of claim 1 , wherein the SM context and the PFCP session context further include priority of the group ID.

4 . The method of claim 1 , further comprising:

transmitting, to the second SMF, a message requesting recovery of the SM context; and

receiving, from the second SMF, a message responding to the request.

5 . A method performed by a user plane function (UPF) in a wireless communication system, comprising:

receiving, from a session management function (SMF), a message requesting a packet forwarding control protocol (PFCP) session context including a group identifier (ID); and

transmitting, to the SMF, a response message to the request message,

wherein an SM context including the group ID is transmitted from the SMF to a second SMF.

6 . The method claim 5 ,

wherein the group ID includes information about priority, and

wherein the information about the priority is bit information.

7 . The method of claim 5 , wherein the SM context and the PFCP session context further include priority of the group ID.

8 . The method of claim 5 ,

wherein a message requesting recovery of the SM context is transmitted from the SMF to the second SMF; and

wherein a message responding to the request is received from the second SMF to the SMF.

9 . A session management function (SMF), comprising:

a transceiver capable of transmitting and receiving at least one signal; and

a controller coupled with the transceiver,

wherein the controller is configured to:

transmit, to a second SMF, an SM context including a group identifier (ID),

transmit, to a user plane function (UPF), a message requesting a packet forwarding control protocol (PFCP) session context including the group ID, and

receive, from the UPF, a response message to the request message.

10 . The SMF claim 9 ,

wherein the group ID includes information about priority, and

wherein the information about the priority is bit information.

11 . The SMF of claim 9 , wherein the SM context and the PFCP session context further include priority of the group ID.

12 . The SMF of claim 9 , wherein the controller is further configured to:

transmit a message requesting recovery of the SM context to the second SMF; and

receive, from the second SMF, a message responding to the request.

13 . A user plane function (UPF), comprising:

a transceiver capable of transmitting and receiving at least one signal; and

a controller coupled with the transceiver,

wherein the controller is configured to:

receive, from a session management function (SMF), a message requesting a packet forwarding control protocol (PFCP) session context including a group identifier (ID), and

transmit, to the SMF, a response message to the request message,

wherein an SM context including the group ID is transmitted from the SMF to a second SMF.

14 . The UPF of claim 13 ,

wherein the group ID includes information about priority, and

wherein the information about the priority is bit information.

15 . The UPF of claim 13 , wherein the SM context and the PFCP session context further include priority of the group ID.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (34)