# US 12,764,828 B2 · Method for transmitting and receiving sidelink data and device for same in wireless communication system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,764,828 B2
- Document ID: US12764828B2
- Status: Granted
- Kind: B2
- Application number: 18/687,610
- Filed: 2022-09-02
- Published: 2025-05-01
- Granted: 2026-10-13
- Earliest claimed: 2021-09-03
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Giwon Park; Hanbyul Seo; Seoyoung Back; Jongwoo Hong
- Web page: https://patentgrep.com/patent/US12764828B2

## CPC

- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04L 1/188: {Time-out mechanisms}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method of a second user equipment (UE) for receiving sidelink data in a wireless communication system comprises receiving configuration information related to a resource pool for sidelink communication from a base station, receiving sidelink control information (SCI) from a first UE, and receiving the sidelink data from the first UE based on the SCI. The SCI is received based on a monitoring related to the SCI. Based on a slot in which the SCI is received, an active time related to sidelink (SL) discontinuous reception (DRX) is determined. Based on a resource pool including the slot in which the SCI is received, whether to perform an operation related to the SL DRX is determined.

## Claims

### Claim 1

A method comprising:
receiving, by a second user equipment (UE) from a base station, sidelink (SL) discontinuous reception (DRX) configuration information, wherein the SL DRX configuration information includes information for a plurality of SL DRX timers that include i) an SL DRX Hybrid Automatic Repeat Request (HARQ) Round Trip Time (RTT) timer, ii) an SL DRX Onduration timer, iii) an SL DRX inactivity timer, and/or iv) an SL DRX retransmission timer;
receiving, by the second user UE from the base station, configuration information that includes i) information for a resource pool in which an SL DRX is not supported and ii) information for a resource pool in which the SL DRX is supported;
receiving, by the second UE from a first UE, sidelink control information (SCI) that includes i) a first stage SCI on a physical sidelink control channel (PSCCH), and ii) a second stage SCI on a physical sidelink shared channel (PSSCH); and
receiving, by the second UE from the first UE, sidelink data based on the SCI,
wherein the SCI is received based on a monitoring related to the SCI,
wherein based on a slot in which the SCI is received, an SL DRX active time is determined,
wherein the SL DRX active time includes a time duration in which an SL DRX timer is running, and the SL DRX timer is the SL DRX Onduration timer, the SL DRX inactivity timer, or the SL DRX retransmission timer,
wherein based on a resource pool including the slot in which the SCI is received, whether to perform an operation related to the SL DRX is determined,
wherein based on i) the SL DRX HARQ RTT timer related to a retransmission of the sidelink data being started, ii) a first slot within a time duration, in which the SL DRX HARQ RTT timer is running, belonging to the resource pool in which the SL DRX is not supported,
the monitoring related to the SCI is performed in the first slot.

### Claim 2 (depends on 1)

The method of claim 1, wherein based on the resource pool including the slot in which the SCI is received being the resource pool in which the SL DRX is supported, the operation related to the SL DRX is performed.

### Claim 3 (depends on 1)

The method of claim 1, wherein based on i) the resource pool including the slot in which the SCI is received being the resource pool in which the SL DRX is supported, and ii) a transmission of the sidelink data scheduled by the SCI being a new sidelink transmission,
the SL DRX inactivity timer is started after the slot in which the SCI is received.

### Claim 4 (depends on 1)

The method of claim 1, wherein based on a second slot within the time duration belonging to the resource pool in which the SL DRX is supported,
a monitoring related to the first stage SCI is performed and a monitoring related to the second stage SCI is skipped, in the second slot.

### Claim 5 (depends on 1)

The method of claim 1, wherein based on the resource pool including the slot in which the SCI is received being the resource pool in which the SL DRX is not supported, the operation related to the SL DRX is not performed.

### Claim 6

A second user equipment (UE) comprising:
one or more transceivers;
one or more processors configured to control the one or more transceivers; and
one or more memories operably connected to the one or more processors,
wherein the one or more memories are configured to store instructions performing operations based on being executed by the one or more processors,
wherein the operations comprise:
receiving, from a base station, sidelink (SL) discontinuous reception (DRX) configuration information, wherein the SL DRX configuration information includes information for a plurality of SL DRX timers that include i) an SL DRX Hybrid Automatic Repeat Request (HARQ) Round Trip Time (RTT) timer, ii) an SL DRX Onduration timer, iii) an SL DRX inactivity timer, and/or iv) an SL DRX retransmission timer;
receiving, from the base station, configuration information that includes i) information for a resource pool in which an SL DRX is not supported and ii) information for a resource pool in which the SL DRX is supported;
receiving, from a first UE, sidelink control information (SCI) that includes i) a first stage SCI on a physical sidelink control channel (PSCCH), and ii) a second stage SCI on a physical sidelink shared channel (PSSCH); and
receiving, from the first UE, sidelink data based on the SCI,
wherein the SCI is received based on a monitoring related to the SCI,
wherein based on a slot in which the SCI is received, an SL DRX active time is determined,
wherein the SL DRX active time includes a time duration in which an SL DRX timer is running, and the SL DRX timer is the SL DRX Onduration timer, the SL DRX inactivity timer, or the SL DRX retransmission timer,
wherein based on a resource pool including the slot in which the SCI is received, whether to perform an operation related to the SL DRX is determined,
wherein based on i) the SL DRX HARQ RTT timer related to a retransmission of the sidelink data being started, ii) a first slot within a time duration, in which the SL DRX HARQ RTT timer is running, belonging to the resource pool in which the SL DRX is not supported,
the monitoring related to the SCI is performed in the first slot.