# US 12,120,644 B2 · Resource selection method and apparatus for sidelink transmission

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- Number: US 12,120,644 B2
- Document ID: US12120644B2
- Status: Granted
- Kind: B2
- Application number: 18/354,964
- Filed: 2023-07-19
- Published: 2023-11-09
- Granted: 2024-10-15
- Earliest claimed: 2019-07-02
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Cheolkyu Shin; Jeongho Yeo; Taehyoung Kim; Jinyoung Oh; Hyunseok Ryu; Jonghyun Bang
- Web page: https://patentgrep.com/patent/US12120644B2

## CPC

- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04W 72/02: Selection of wireless resources by user or terminal
- H04L 1/1896: {ARQ related signaling}
- H04W 72/535: {based on resource usage policies}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04W 76/14: Direct-mode setup
- H04W 92/18: between terminal devices
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method performed by a user equipment is provided, which includes identifying information for a resource pool; identifying a resource allocation mode; identifying physical sidelink feedback channel (PSFCH) information, wherein the PSFCH information includes information for a PSFCH period; and selecting, by the UE, a resource for transmission based on the information for the PSFCH period, and a time required for a PSFCH reception and decoding, in case that the resource allocation mode is resource allocation mode 2.

## Claims

### Claim 1

A method performed by a user equipment (UE), the method comprising:
identifying information for a resource pool;
identifying a physical sidelink feedback channel (PSFCH) period within the resource pool; and
selecting a resource for transmission based on the PSFCH period, a time offset between a physical sidelink channel and a PSFCH, a time for a PSFCH reception and decoding, and a time for sidelink retransmission preparation, in case of resource allocation mode 2,
wherein the resource for transmission is selected within a time interval [n+T1, n+T2], where n is a slot in which selecting the resource for transmission is triggered, T1 is associated with UE implementation, and T2 is associated with a packet delay budget.

### Claim 2 (depends on 1)

The method of claim 1, wherein the resource for transmission is selected on the resource pool.

### Claim 3

A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
at least one processor coupled with the transceiver and configured to:
identify information for a resource pool,
identify a physical sidelink feedback channel (PSFCH) period within the resource pool, and
select a resource for transmission based on the PSFCH period, a time offset between a physical sidelink channel and a PSFCH, a time for a PSFCH reception and decoding, and a time for sidelink retransmission preparation, in case of resource allocation mode 2,
wherein the resource for transmission is selected within a time interval [n+T1, n+T2], where n is a slot in which selecting the resource for transmission is triggered, T1 is associated with UE implementation, and T2 is associated with a packet delay budget.

### Claim 4 (depends on 3)

The UE of claim 3, wherein the resource for transmission is selected on the resource pool.

### Claim 5

A method performed by a base station, the method comprising:
transmitting information for a resource pool,
wherein a physical sidelink feedback channel (PSFCH) period is identified within the resource by at a user equipment (UE),
wherein a resource for transmission is selected at the UE, based on the PSFCH period, a time offset between a physical sidelink channel and a PSFCH, a time for a PSFCH reception and decoding, and a time for sidelink retransmission preparation, in case of resource allocation mode 2, and
wherein the resource for transmission is selected within a time interval [n+T1, n+T2], where n is a slot in which selecting the resource for transmission is triggered, T1 is associated with UE implementation, and T2 is associated with a packet delay budget.

### Claim 6 (depends on 5)

The method of claim 5, wherein the resource for transmission is selected on the resource pool.

### Claim 7

A base station in a wireless communication system, the base station comprising:
a transceiver; and
at least one processor coupled with the transceiver and configured to:
transmit information for a resource pool,
wherein a physical sidelink feedback channel (PSFCH) period is identified within the resource pool at a user equipment (UE),
wherein a resource for transmission is selected at the UE, based on the PSFCH period, a time offset between a physical sidelink channel and a PSFCH, a time requiredfor a PSFCH reception and decoding, and a time for sidelink retransmission preparation, in case of resource allocation mode 2, and
wherein the resource for transmission is selected within a time interval [n+T1, n+T2], where n is a slot in which selecting the resource for transmission is triggered, T1 is associated with UE implementation, and T2 is associated with a packet delay budget.

### Claim 8 (depends on 7)

The base station of claim 7, wherein the resource for transmission is selected on the resource pool.