Method and device for resource selection in NR V2X

Patent metadata

Field	Value
Publication number	US-11864162-B2
Application number	US-202218091708-A
Country	US
Kind code	B2
Filing date	Dec 30, 2022
Priority date	Aug 5, 2019
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

Provided herein is a method for performing, by a first apparatus (100), resource selection in a wireless communication system. The method may include the steps of receiving system information including configuration information related to exceptional pools from a base station (200); selecting the first exceptional pool or the second exceptional pool, based on at least one of a physical layer problem, a connection re-establishment, a handover, or a normal resource pool which is unavailable; selecting a resource from the selected exceptional pool; and performing a sidelink (SL) communication using the resource.

First claim

What is claimed is:

1. A method for performing, by a first device, wireless communication, the method comprising:
obtaining information regarding at least one normal resource pool and information regarding an exceptional resource pool,
wherein the at least one normal resource pool includes a resource by which the first device is allowed to transmit sidelink communication, and
wherein the exceptional resource pool includes a resource by which the first device is allowed to transmit sidelink communication in an exceptional condition; and
determining that a physical sidelink feedback channel (PSFCH) is configured for the at least one normal resource pool and the exceptional resource pool in case that at least a logical channel configured with a field which indicates a hybrid automatic repeat request (HARQ) feedback being enabled or disabled for the logical channel is set to enabled.

2. The method of claim 1 , wherein the exceptional case occurs based on a quality of service (QoS).

3. The method of claim 1 , wherein a feedback received through the PSFCH includes at least one of a first HARQ feedback, channel state information (CSI), or a closed-loop power control parameter.

4. The method of claim 1 , wherein the exceptional case occurs based on at least one of a physical layer problem, a connection re-establishment, a handover, or a normal resource pool which is unavailable.

5. The method of claim 1 , wherein the exceptional case occurs based on at least one of a cell reselection, a beam failure, or a beam reselection.

6. The method of claim 1 , wherein the information regarding the exceptional resource pool is configured based on a validity area, and
wherein the validity area includes at least one of a single sidelink zone, a sector, a single beam, or a set of cells.

7. The method of claim 1 , further comprising:
selecting a first resource from the exceptional resource pool,
wherein the first resource is selected based on a resource selection mechanism which includes random resource selection or short-term sensing resource selection.

8. The method of claim 1 , further comprising:
transmitting a request for a configuration related to the exceptional resource pool to a base station,
wherein the information regarding the exceptional resource pool is received based on the request.

9. 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:
obtain information regarding at least one normal resource pool and information regarding an exceptional resource pool,
wherein the at least one normal resource pool includes a resource by which the first device is allowed to transmit sidelink communication, and
wherein the exceptional resource pool includes a resource by which the first device is allowed to transmit sidelink communication in an exceptional condition; and
determine that a physical sidelink feedback channel (PSFCH) is configured for the at least one normal resource pool and the exceptional resource pool in case that at least a logical channel configured with a field which indicates a hybrid automatic repeat request (HARQ) feedback being enabled or disabled for the logical channel is set to enabled.

10. The first device of claim 9 , wherein the exceptional case occurs based on a quality of service (QoS).

11. The first device of claim 9 , wherein a feedback received through the PSFCH includes at least one of a first HARQ feedback, channel state information (CSI), or a closed-loop power control parameter.

12. A device configured 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:
obtain information related to one exceptional pool;
determine to use the one exceptional pool, based on occurrence of an exceptional case;
obtain information regarding at least one normal resource pool and information regarding an exceptional resource pool,
wherein the at least one normal resource pool includes a resource by which the first UE is allowed to transmit sidelink communication, and
wherein the exceptional resource pool includes a resource by which the first UE is allowed to transmit sidelink communication in an exceptional condition; and
determine that a physical sidelink feedback channel (PSFCH) is configured for the at least one normal resource pool and the exceptional resource pool in case that at least a logical channel configured with a field which indicates a hybrid automatic repeat request (HARQ) feedback being enabled or disabled for the logical channel is set to enabled.

13. The device of claim 12 , wherein the exceptional case occurs based on a quality of service (QoS).

14. The device of claim 12 , wherein a feedback received through the PSFCH includes at least one of a first HARQ feedback, channel state information (CSI), or a closed-loop power control parameter.

Assignees

• Lg Electronics Inc

Inventors

• Thomas Robin
• Seo Hanbyul

Classifications

• H04W88/04

  adapted for relaying to or from another terminal or user · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W4/70

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title

• H04W4/46

  for vehicle-to-vehicle communication [V2V] · CPC title

• H04W4/44

  for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H] · CPC title