Method and device for resource selection in nr v2x

Patent metadata

Field	Value
Publication number	US-2022159627-A1
Application number	US-202217665304-A
Country	US
Kind code	A1
Filing date	Feb 4, 2022
Priority date	Aug 5, 2019
Publication date	May 19, 2022
Grant date	—

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 apparatus, wireless communication, the method comprising:
obtaining information related to at least one exceptional pool; determining an exceptional pool which includes a hybrid automatic repeat request (HARQ) feedback resource among the at least one exceptional pool; transmitting a medium access control (MAC) protocol data unit (PDU) to a second apparatus based on the exceptional pool; receiving a HARQ feedback related to the MAC PDU based on the exceptional pool, wherein a normal resource pool and the exceptional pool are configured to the first apparatus, for the MAC PDU in which a HARQ feedback is set to enabled.

2 . The method of claim 1 , wherein the exceptional pool is always configured to the first apparatus, for the MAC PDU in which a HARQ feedback is set to enabled.

3 . The method of claim 1 , wherein that the at least one exceptional pool with no HARQ feedback resource is configured to the first apparatus is not allowed.

4 . The method of claim 1 , wherein the exceptional pool is selected based on a quality of service (QoS).

5 . The method of claim 1 , wherein the HARQ feedback includes at least one of HARQ feedback, channel state information (CSI), or closed-loop power control parameters.

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

7 . The method of claim 1 , wherein the exceptional pool is selected based on at least one of a cell reselection, a beam failure, or a beam reselection.

8 . The method of claim 1 , wherein the information 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.

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

10 . The method of claim 1 , further comprising:
transmitting information, which is related to a need for an exceptional pool with higher reliability, to a base station, wherein the at least one exceptional pool includes an exceptional pool with higher reliability.

11 . The method of claim 1 ,
wherein the at least one exceptional pool includes a first exceptional pool and a second exceptional pool, and wherein the first exceptional pool and the second exceptional pool are from different radio access technologies (RATs).

12 . The method of claim 11 , wherein the first exceptional pool is from NR RAT, and
wherein the first exceptional pool is selected based on the QoS which requires higher reliability.

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

14 . A first apparatus for performing wireless communication, the first apparatus 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 related to at least one exceptional pool; determine an exceptional pool which includes a hybrid automatic repeat request (HARQ) feedback resource among the at least one exceptional pool; transmit a medium access control (MAC) protocol data unit (PDU) to a second apparatus based on the exceptional pool; receive a HARQ feedback related to the MAC PDU based on the exceptional pool, wherein a normal resource pool and the exceptional pool are configured to the first apparatus, for the MAC PDU in which a HARQ feedback is set to enabled.

15 . An apparatus configured to control a first user equipment (UE), the apparatus 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 at least one exceptional pool; determine an exceptional pool which includes a hybrid automatic repeat request (HARQ) feedback resource among the at least one exceptional pool; transmit a medium access control (MAC) protocol data unit (PDU) to a second UE based on the exceptional pool; receive a HARQ feedback related to the MAC PDU based on the exceptional pool, wherein a normal resource pool and the exceptional pool is configured to the first apparatus, for the MAC PDU in which a HARQ feedback is set to enabled.

Assignees

• Lg Electronics Inc

Inventors

• Thomas Robin
• Seo Hanbyul

Classifications

• H04W72/542

  using measured or perceived quality · CPC title

• H04W4/40 Primary

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• 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