Method and device for selecting resource in wireless communication system

Patent metadata

Field	Value
Publication number	US-12490282-B2
Application number	US-202318192007-A
Country	US
Kind code	B2
Filing date	Mar 29, 2023
Priority date	Sep 29, 2020
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

Provided may be a method of supporting, by a user equipment (UE), sidelink communication in a wireless communication system. The method. of supporting, by the UE, sidelink communication in the wireless communication system may include receiving a coordination request from a transmitting UE (Tx UE); generating a coordination message based on the coordination request; and transmitting the generating coordination message to the Tx UE. Here, the coordination request may include 1-bit information and the coordination request may be received based on at least one of a physical resource set of Physical Sidelink Feedback Channel (PSFCH), a Sidelink Control Information (SCI) format, Cyclic Redundancy Checking (CRC) scrambling, and a Demodulation Reference Signal (DMRS) sequence, and the Tx UE may perform resource reselection based on the coordination message.

First claim

What is claimed is:

1 . A method comprising:
receiving, by a first wireless user device from a second wireless user device, a coordination request comprising:
a first bit indicating that the second wireless user device requests coordination information; and
a second bit indicating a preferred resource or a non-preferred resource;
generating, based on the coordination request, a coordination message; and transmitting the generated coordination message to the second wireless user device.

2 . The method of claim 1 , wherein the coordination request comprises sidelink control information comprising the first bit and the second bit.

3 . The method of claim 2 , wherein the sidelink control information is a sidelink control information format 2-C.

4 . The method of claim 2 , wherein the sidelink control information is a second stage sidelink control information format.

5 . The method of claim 4 , further comprising:
receiving a sidelink control information format 1 comprising a second stage sidelink control information format field indicating a sidelink control information format 2-C as the second stage sidelink control information format.

6 . The method of claim 1 , wherein the coordination request further comprises at least one of:
priority information; a number of subchannels per slot; a resource reservation period; or an indication associated with a resource coordination message (CM) window location.

7 . The method of claim 6 , wherein the coordination request further comprises:
a source identifier; and a destination identifier.

8 . The method of claim 6 , wherein the CM window location comprises at least one of:
a CM window starting point; or a CM window end point.

9 . The method of claim 1 , further comprising:
receiving, by the first wireless user device from the second wireless user device, sidelink data, wherein the coordination message is for the second wireless user device for performing resource reselection for transmission of sideilnk data.

10 . The method of claim 1 , wherein when the first wireless user device receives the coordination request, the second wireless user device is in a mode in which the second wireless user device directly determines a sidelink transmission resource.

11 . The method of claim 1 , wherein the first bit comprised in the coordination request is configured to indicate whether the first wireless user device provides coordination information or the second wireless user device requests coordination information.

12 . The method of claim 1 , further comprising:
transmitting, from the first wireless user device, coordination information comprising a bit indicating that the first wireless user device provides, based on a condition, the coordination information, wherein the bit comprised in the coordination information is configured to indicate whether the first wireless user device provides coordination information or the second wireless user device requests coordination information.

13 . The method of claim 12 , further comprising:
generating, based on the condition being satisfied, the coordination information, wherein the condition is a condition for triggering a resource coordination procedure.

14 . The method of claim 12 , wherein the condition comprises a half-duplex communication.

15 . The method of claim 12 , wherein the coordination information comprises sidelink control information comprising the bit indicating that the first wireless user device provides, based on the condition, the coordination information.

16 . The method of claim 15 , wherein the sidelink control information is a sidelink control information format 2-C corresponding to a second stage sidelink control information format.

17 . The method of claim 1 , further comprising:
transmitting, from the first wireless user device via a physical sidelink feedback channel (PSFCH), signaling information indicating that a resource reselection is necessary.

18 . The method of claim 17 , wherein the transmitting the signaling information is further based on an expected resource conflict.

19 . The method of claim 17 , wherein the transmitting the signaling information is further based on a reference signal received power (RSRP) of received sidelink control information higher than a threshold.

Assignees

• Innovative Tech Lab Co Ltd

Inventors

• Park Dong Hyun

Classifications

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L1/004

  by using forward error control (H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00) · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W92/18

  between terminal devices · CPC title