Granted Patent B2

US 12,501,342 · App. 18/033,286 · Granted Dec 16, 2025

Inventors: Seokjung Kim (Seoul, KR); Laeyoung Kim (Seoul, KR); Myungjune Youn (Seoul, KR); Jian Xu (Seoul, KR); Daewook Byun (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04W40/24H04W28/0925H04W76/12H04W76/15

Abstract

Claims (47)

1 . A method for performing communication, performed by a PCF (Policy Control Function), comprising:

receiving, from an AMF (Access and Mobility management Function), a UE (User Equipment) Policy Container;

transmitting, to a UE, an URSP (UE route selection policy) rule,

wherein the URSP rule includes a first RSD (Route Selection Descriptor) and a second RSD,

wherein the first RSD includes a PDU (Protocol Data Unit) session Pair ID (identifier),

wherein the PDU session Pair ID is used to establish two redundant PDU sessions,

wherein the second RSD does not include the PDU session Pair ID.

2 . The method of claim 1 ,

wherein the first RSD has a higher priority value than the second RSD.

3 . The method of claim 1 ,

wherein the PDU session Pair ID indicates the two redundant PDU sessions.

4 . The method of claim 1 ,

wherein the two redundant PDU sessions are paired for redundant transmission.

5 . The method of claim 1 ,

wherein the UE Policy Container includes information on whether the UE supports a PDU session Pair ID.

6 . A method for performing communication, performed by a UE (User Equipment), comprising:

transmitting, to a base station, a registration request message;

receiving, from PCF (Policy Control Function), an URSP (UE route selection policy) rule,

wherein the URSP rule includes a first RSD (Route Selection Descriptor) and a second RSD,

wherein the first RSD includes a PDU (Protocol Data Unit) session Pair ID (identifier),

wherein the PDU session Pair ID is used to establish two redundant PDU sessions,

wherein the second RSD does not include the PDU session Pair ID.

7 . The method of claim 6 ,

wherein the first RSD has a higher priority value than the second RSD.

8 . The method of claim 6 ,

wherein the PDU session Pair ID indicates the two redundant PDU sessions.

9 . The method of claim 6 ,

wherein the two redundant PDU sessions are paired for redundant transmission.

10 . The method of claim 6 , further comprising:

checking the first RSD;

skipping to check the second RSD, based on the UE recognizing the PDU session Pair ID in the first RSD;

performing procedure for establishing the two redundant PDU sessions based on the first RSD, based on the UE recognizing the PDU session Pair ID in the first RSD.

11 . The method of claim 6 , further comprising:

checking the first RSD;

checking the second RSD, based on the UE not recognizing the PDU session Pair ID in the first RSD;

performing procedure for establishing the two redundant PDU sessions based on the second RSD, based on the UE not recognizing the PDU session Pair ID in the first RSD.

12 . The method of claim 6 ,

wherein the registration request message includes information on whether the UE supports a PDU session Pair ID.

13 . A PCF (Policy Control Function), comprising:

a transceiver to transmit a signal and to receive a signal; and

a processor to control the transceiver,

wherein the transceiver receives, from an AMF (Access and Mobility management Function), a UE (User Equipment) Policy Containerpolicy association establishment message;

wherein the transceiver transmits, to a UE, an URSP (UE route selection policy) rule,

wherein the URSP rule includes a first RSD (Route Selection Descriptor) and a second RSD,

wherein the first RSD includes a PDU (Protocol Data Unit) session Pair ID (identifier),

wherein the PDU session Pair ID is used to establish two redundant PDU sessions,

wherein the second RSD does not include the PDU session Pair ID.

Assignments (1)

Priority Claims (3)

Continuity (1)

References Cited (15)