# US 12,015,492 B2 · Feedback resource

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- Number: US 12,015,492 B2
- Document ID: US12015492B2
- Status: Granted
- Kind: B2
- Application number: 17/382,940
- Filed: 2021-07-22
- Published: 2021-11-11
- Granted: 2024-06-18
- Earliest claimed: 2019-08-15
- Assignees: Ofinno, LLC
- Applicants: Ofinno, LLC
- Inventors: Kai Xu; Esmael Hejazi Dinan; Hua Zhou; Yunjung Yi; Bing Hui; Alireza Babaei; Hyukjin Chae
- Web page: https://patentgrep.com/patent/US12015492B2

## CPC

- H04L 1/1896: {ARQ related signaling}
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/20: Control channels or signalling for resource management
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/121: for groups of terminals or users
- 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 first wireless device receives, from a base station, configuration parameters of feedback resources. The first wireless device receives, from a second wireless device, a transport block via a sidelink. The first wireless device transmits, to the second wireless device, an acknowledgment for the transport block via a feedback resource, of the feedback resources. The feedback resources is determined based on an identity of the first wireless device and a modulo operation performed on a quantity of the feedback resources.

## Claims

### Claim 1

A method comprising:
receiving, by a destination wireless device from a base station, configuration parameters of physical sidelink feedback channel (PSFCH) radio resources;
receiving, by the destination wireless device from a source wireless device, sidelink control information comprising an identity (ID) of the source wireless device;
determining an index of a PSFCH radio resource, among the PSFCH radio resources, based on:
the ID of the source wireless device;
an ID of the destination wireless device; and
a modulo operation performed on a quantity of the PSFCH radio resources; and
transmitting, by the destination wireless device to the source wireless device, an acknowledgement for a transport block via the PSFCH radio resource having the index.

### Claim 2 (depends on 1)

The method of claim 1, wherein the configuration parameters of the PSFCH radio resources are received in one or more radio resource control (RRC) messages.

### Claim 3 (depends on 1)

The method of claim 1, wherein the configuration parameters of the PSFCH radio resources indicate the quantity of the PSFCH radio resources.

### Claim 4 (depends on 1)

The method of claim 1, wherein the configuration parameters indicate one or more resource pools of the PSFCH radio resources.

### Claim 5 (depends on 4)

The method of claim 4, wherein the index of the PSFCH radio resource is determined further based on the one or more resource pools of the PSFCH radio resources.

### Claim 6 (depends on 1)

The method of claim 1, wherein the identity of the destination wireless device comprises one of:
a cell radio network temporary identifier;
an international mobile subscriber identity;
a zone identification of the destination wireless device; and
a temporary mobile subscriber identity.

### Claim 7 (depends on 1)

The method of claim 1, wherein the index indicates the PSFCH radio resource, of the PSFCH radio resources, for transmitting the acknowledgement.

### Claim 8

A destination wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the destination wireless device to:
receive, from a base station, configuration parameters of physical sidelink feedback channel (PSFCH) radio resources;
receive, from a source wireless device, sidelink control information comprising an identity (ID) of the source wireless device;
determine an index of a PSFCH radio resource, among the PSFCH radio resources, based on:
the ID of the source wireless device;
an ID of the destination wireless device; and
a modulo operation performed on a quantity of the PSFCH radio resources; and
transmit, to the source wireless device, an acknowledgement for a transport block via the PSFCH radio resource having the index.

### Claim 9 (depends on 8)

The destination wireless device of claim 8, wherein the configuration parameters of the PSFCH radio resources are received in one or more radio resource control (RRC) messages.

### Claim 10 (depends on 8)

The destination wireless device of claim 8, wherein the configuration parameters of the PSFCH radio resources indicate the quantity of the feedback resources.

### Claim 11 (depends on 8)

The destination wireless device of claim 8, wherein the configuration parameters indicate one or more resource pools of the PSFCH radio resources.

### Claim 12 (depends on 11)

The destination wireless device of claim 11, wherein the index of the PSFCH radio resource is determined further based on the one or more resource pools of the PSFCH radio resources.

### Claim 13 (depends on 8)

The destination wireless device of claim 8, wherein the identity of the destination wireless device comprises one of:
a cell radio network temporary identifier;
an international mobile subscriber identity;
a zone identification of the destination wireless device; and
a temporary mobile subscriber identity.

### Claim 14 (depends on 8)

The destination wireless device of claim 8, wherein the index indicates the PSFCH radio resource, of the PSFCH radio resources, for transmitting the acknowledgement.

### Claim 15

A system, comprising:
a base station comprising: one or more processors and memory storing instructions that, when executed by the one or more processors, cause the base station to transmit configuration parameters of physical sidelink feedback channel (PSFCH) radio resources;
a destination wireless device comprising: one or more first processors and first memory storing first instructions that, when executed by the one or more first processors, cause the destination wireless device to:
receive, from the base station, the configuration parameters of the PSFCH radio resources;
receive, from a source wireless device, sidelink control information comprising an identity (ID) of the source wireless device;
determine an index of a PSFCH radio resource, among the PSFCH radio resources, based on:
the ID of the source wireless device;
an ID of the destination wireless device; and
a modulo operation performed on a quantity of the PSFCH radio resources; and
transmit, to the source wireless device, an acknowledgement for a transport block via the PSFCH radio resource having the index; and
the source wireless device, wherein the source wireless device comprises: one or more second processors and second memory storing second instructions that, when executed by the one or more second processors, cause the source wireless device to:
receive, from the base station, the configuration parameters of the PSFCH radio resources;
transmit the sidelink control information comprising the ID of the source wireless device; and
receive the acknowledgement via the PSFCH radio resource.