# US 11,451,344 B2 · HARQ feedback

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- Number: US 11,451,344 B2
- Document ID: US11451344B2
- Status: Granted
- Kind: B2
- Application number: 16/924,834
- Filed: 2020-07-09
- Published: 2021-01-14
- Granted: 2022-09-20
- Earliest claimed: 2019-07-09
- Assignees: Ofinno, LLC
- Applicants: Ofinno, LLC
- Inventors: Alireza Babaei; Esmael Dinan; Yunjung Yi; Hua Zhou; Ali Cagatay Cirik; Kai Xu; Youngwoo Kwak; Hyoungsuk Jeon; Nazanin Rastegardoost
- Web page: https://patentgrep.com/patent/US11451344B2

## CPC

- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1642: {Formats specially adapted for sequence numbers}
- H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04L 5/0092: {Indication of how the channel is divided}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- 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 wireless device receives configuration parameters of a cell comprising: a first bandwidth part; and a second bandwidth part. A downlink control information is received. The downlink control information indicates: a priority of a transport block; and a hybrid automatic repeat request (HARQ) feedback timing of a HARQ feedback of the transport block. After receiving the downlink control information (DCI) and before the HARQ feedback timing, the active bandwidth part is switched from the first bandwidth part to the second bandwidth part. The HARQ feedback is transmitted in response to the priority of the transport block being associated with a first service type.

## Claims

### Claim 1

A method comprising:
receiving, by a wireless device, configuration parameters of a cell comprising:
a first bandwidth part; and
a second bandwidth part;
receiving a downlink control information (DCI) indicating:
a priority of a transport block; and
a hybrid automatic repeat request (HARQ) feedback timing of a HARQ feedback of the transport block;
switching, after receiving the DCI and before the HARQ feedback timing, from the first bandwidth part to the second bandwidth part as an active bandwidth part; and
determining, based on switching from the first bandwidth part to the second bandwidth part and before the HARQ feedback timing, whether to transmit or drop the HARQ feedback in response to the priority of the transport block being respectively associated with a first service type or a second service type.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first service type is a ultra reliable and low latency communication service.

### Claim 3 (depends on 1)

The method of claim 1, further comprising receiving a second DCI indicating:
a second resource assignment for a second transport block;
a second priority of the second transport block; and
a second HARQ feedback timing for the second transport block.

### Claim 4 (depends on 3)

The method of claim 3, further comprising determining dropping the HARQ feedback in response to:
a switching timing of the switching being equal to or earlier than the HARQ feedback timing; and
the second priority of the second transport block being associated with a second service type.

### Claim 5 (depends on 4)

The method of claim 4, wherein the second service type is an enhanced mobile broadband service.

### Claim 6 (depends on 1)

The method of claim 1, further comprising determining the first service type based on a priority of the HARQ feedback.

### Claim 7 (depends on 1)

The method of claim 1, wherein the configuration parameters indicate:
a first numerology, of the first bandwidth part, indicating a first subslot duration; and
a second numerology, of the second bandwidth part, indicating a second subslot duration.

### Claim 8 (depends on 7)

The method of claim 7, further comprising determining a second subslot of the second bandwidth part for the HARQ feedback based on:
a first subslot of the first bandwidth part;
a first numerology of the first bandwidth part; and
a second numerology of the second bandwidth part.

### Claim 9 (depends on 8)

The method of claim 8, wherein the determining the second subslot is based on whether first subslot duration is smaller or larger than the second subslot duration.

### Claim 10 (depends on 8)

The method of claim 8, wherein the determining, in response to the second subslot duration being larger than the first subslot duration, the second subslot is based on the second numerology.

### Claim 11

A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive configuration parameters of a cell comprising:
a first bandwidth part; and
a second bandwidth part;
receive a downlink control information indicating:
a priority of a transport block; and
a hybrid automatic repeat request (HARQ) feedback timing of a HARQ feedback of the transport block;
switch, after receiving the downlink control information (DCI) and before the HARQ feedback timing, from the first bandwidth part to the second bandwidth part as an active bandwidth part; and
determine, based on switching from the first bandwidth part to the second bandwidth part and before the HARQ feedback timing, whether to transmit or drop the HARQ feedback in response to the priority of the transport block being respectively associated with a first service type or a second service type.

### Claim 12 (depends on 11)

The wireless device of claim 11, wherein the first service type is a ultra reliable and low latency communication service.

### Claim 13 (depends on 11)

The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive a second DCI indicating:
a second resource assignment for a second transport block;
a second priority of the second transport block; and
a second HARQ feedback timing for the second transport block.

### Claim 14 (depends on 13)

The wireless device of claim 13, wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine dropping the HARQ feedback in response to:
a switching timing of the switching being equal to or earlier than the HARQ feedback timing; and
the second priority of the second transport block being associated with a second service type.

### Claim 15 (depends on 14)

The wireless device of claim 14, wherein the second service type is an enhanced mobile broadband service.

### Claim 16 (depends on 11)

The wireless device of claim 11, wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine the first service type based on a priority of the HARQ feedback.

### Claim 17 (depends on 11)

The wireless device of claim 11, wherein the configuration parameters indicate:
a first numerology, of the first bandwidth part, indicating a first subslot duration; and
a second numerology, of the second bandwidth part, indicating a second subslot duration.

### Claim 18 (depends on 17)

The wireless device of claim 17, wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine a second subslot of the second bandwidth part for the HARQ feedback based on:
a first subslot of the first bandwidth part;
a first numerology of the first bandwidth part; and
a second numerology of the second bandwidth part.

### Claim 19 (depends on 18)

The wireless device of claim 18, wherein the determination the second subslot is based on whether first subslot duration is smaller or larger than the second subslot duration.

### Claim 20

A system comprising:
a base station comprising:
one or more first processors; and
first memory storing first instructions that, when executed by the one or more first processors, cause the base station to:
transmit configuration parameters of a cell comprising:
a first bandwidth part; and
a second bandwidth part; and
transmit a downlink control information indicating:
a priority of a transport block; and
a hybrid automatic repeat request (HARQ) feedback timing of a HARQ feedback of the transport block; and
a wireless device comprising:
one or more second processors; and
second memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to:
receive the configuration parameters;
receive the downlink control information;
switch, after receiving the downlink control information (DCI) and before the HARQ feedback timing, from the first bandwidth part to the second bandwidth part as an active bandwidth part; and
determine, based on switching from the first bandwidth part to the second bandwidth part and before the HARQ feedback timing, whether to transmit or drop the HARQ feedback in response to the priority of the transport block being respectively associated with a first service type or a second service type.