Granted Patent B2

US 12,452,889 · App. 18/036,002 · Granted Oct 21, 2025

Inventor: Seungmin Lee (Seoul, KR)

Assignee: LG Electronics Inc.

H04W72/40H04W28/26H04W72/1263

Abstract

Claims (41)

1. A method for performing, by a first device, wireless communication, the method comprising:

selecting a first resource and a third resource within a selection window, based on sensing and resource selection procedure;

performing re-evaluation related to the first resource, based on triggering of the re-evaluation related to the first resource;

selecting a second resource, based on the re-evaluation related to the first resource;

transmitting, to a second device, sidelink control information (SCI) including a first value related to resource reservation period of the second resource, through a physical sidelink control channel (PSCCH), based on the second resource,

wherein the first value is determined equal to a second value related to resource reservation period of the third resource included within a first period, based on the second resource being included within the first period, and

wherein the first value is determined to be a value equal to the second value or different from the second value, based on the second resource being included within a second period after the first period; and

transmitting, to the second device, a medium access control (MAC) protocol data unit (PDU) through a physical sidelink shared channel (PSSCH), based on the second resource.

2. The method of claim 1 , wherein the resource reservation period of the third resource is 100 ms.

3. The method of claim 1 , wherein the first period is an initial period.

4. The method of claim 1 , wherein information related to reservation of the second resource is not transmitted to the second device before the re-evaluation.

5. The method of claim 1 , wherein the re-evaluation is performed based on pre-emption related to the first resource.

6. The method of claim 5 , wherein the first resource is a reselected resource.

7. The method of claim 1 , wherein the first resource is selected within an exceptional resource pool, based on the resource selection procedure being performed based on a period value smaller than a first threshold.

8. The method of claim 7 , wherein the period value is 1 ms.

9. The method of claim 7 , wherein the first resource is selected within the exceptional resource pool, based on the sensing being performed for a time shorter than a second threshold.

10. The method of claim 7 , wherein the first resource is selected within the exceptional resource pool, based on the sensing being performed by a number of slots less than a second threshold.

11. The method of claim 1 , wherein the first resource is randomly selected within a normal resource pool, based on the resource selection procedure being performed based on a period value smaller than a first threshold.

12. The method of claim 11 , wherein reservation for the first resource is maintained as many as a number of transmissions related to the MAC PDU, based on the first resource being randomly selected within a normal resource pool.

13. The method of claim 11 , wherein reservation for the first resource is maintained as many as a pre-configured number of resource reservation, based on the first resource being randomly selected within a normal resource pool.

14. A first device for performing wireless communication, the first device comprising:

one or more memories storing instructions;

one or more transceivers; and

one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:

select a first resource and a third resource within a selection window, based on sensing and resource selection procedure;

perform re-evaluation related to the first resource, based on triggering of the re-evaluation related to the first resource;

select a second resource, based on the re-evaluation related to the first resource;

transmit, to a second device, sidelink control information (SCI) including a first value related to resource reservation period of the second resource, through a physical sidelink control channel (PSCCH), based on the second resource,

wherein the first value is determined equal to a second value related to resource reservation period of the third resource included within a first period, based on the second resource being included within the first period, and

wherein the first value is determined to be a value equal to the second value or different from the second value, based on the second resource being included within a second period after the first period; and

transmit, to the second device, a medium access control (MAC) protocol data unit (PDU) through a physical sidelink shared channel (PSSCH), based on the second resource.

15. A device adapted to control a first user equipment (UE), the device comprising:

one or more processors; and

one or more memories operably connectable to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:

select a first resource and a third resource within a selection window, based on sensing and resource selection procedure;

perform re-evaluation related to the first resource, based on triggering of the re-evaluation related to the first resource;

select a second resource, based on the re-evaluation related to the first resource;

transmit, to a second UE, sidelink control information (SCI) including a first value related to resource reservation period of the second resource, through a physical sidelink control channel (PSCCH), based on the second resource,

wherein the first value is determined equal to a second value related to resource reservation period of the third resource included within a first period, based on the second resource being included within the first period, and

wherein the first value is determined to be a value equal to the second value or different from the second value, based on the second resource being included within a second period after the first period; and

transmit, to the second UE, a medium access control (MAC) protocol data unit (PDU) through a physical sidelink shared channel (PSSCH), based on the second resource.

Assignments (1)

Continuity (2)

References Cited (10)