# US 2025/0096983 A1 · USER EQUIPMENT (UE) REPORTING OF QUANTITY OF ACKNOWLEDGEMENTS (ACKs) IN BUNDLED ACKNOWLEDGEMENT (ACK) CODEBOOK

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- Number: US 2025/0096983 A1
- Document ID: US20250096983A1
- Status: Published application
- Kind: A1
- Application number: 18/471,249
- Filed: 2023-09-20
- Published: 2025-03-20
- Earliest claimed: 2023-09-20
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Mostafa KHOSHNEVISAN; Jing SUN; Yi HUANG; Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL
- Web page: https://patentgrep.com/patent/US20250096983A1

## CPC

- H04L 1/1614: {using bitmaps}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)}
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for wireless communication at a wireless node includes obtaining downlink transmissions. The method also includes generating an original acknowledgement (ACK) codebook based on whether each of the downlink transmissions is successfully decoded. The method further includes modifying the original ACK codebook by transforming a number of bits of the original ACK codebook. The method still further includes generating an ACK payload comprising the modified original ACK codebook and information related to a quantity of one or more positive acknowledgements for the downlink transmissions. The method also includes outputting, for transmission, the ACK payload.

## Claims

### Claim 1

An apparatus for wireless communication, comprising:
at least one memory comprising instructions; and
at least one processor configured to execute the instructions to cause the apparatus to:
obtain downlink transmissions;
generate an original acknowledgement (ACK) codebook based on whether each of the downlink transmissions is successfully decoded;
modify the original ACK codebook by transforming a plurality of bits of the original ACK codebook;
generate an ACK payload comprising the modified original ACK codebook and information related to a quantity of one or more positive acknowledgements for the downlink transmissions; and
output, for transmission, the ACK payload.

### Claim 2 (depends on 1)

The apparatus of claim 1, in which the information related to the quantity of positive acknowledgements comprises the quantity of positive acknowledgements modulo a value M.

### Claim 3 (depends on 2)

The apparatus of claim 2, in which the value M is a fixed value.

### Claim 4 (depends on 2)

The apparatus of claim 2, in which the at least one processor is further configured to execute the instructions to cause the apparatus to obtain radio resource control (RRC) signaling indicating the value M.

### Claim 5 (depends on 1)

The apparatus of claim 1, in which the payload comprises a first bit associated with the modified original ACK codebook and at least one second bit associated with the information related to the quantity of positive acknowledgements.

### Claim 6 (depends on 5)

The apparatus of claim 5, in which the information related to the quantity of positive acknowledgements is based on the modified original ACK codebook indicating all positive acknowledgements.

### Claim 7 (depends on 5)

The apparatus of claim 5, in which the information related to the quantity of positive acknowledgements is generated in response the modified original ACK codebook indicating all positive acknowledgements, or in response to the modified original ACK codebook indicating at least one negative acknowledgement (NACK).

### Claim 8 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to generate a codepoint comprising one or more bits that jointly indicate the modified original ACK codebook and the information related to the quantity of positive acknowledgements.

### Claim 9 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to form a first ACK part and a second ACK part, a size of the second ACK part being a function of the first ACK part, the second ACK part comprising the information related to the quantity of positive acknowledgements in response to the first ACK part indicating all positive acknowledgements.

### Claim 10 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to form a first ACK part and a second ACK part, a size of the second ACK part being a function of the first ACK part, the first ACK part comprising the information related to the quantity of positive acknowledgements in response to the first ACK part indicating all positive acknowledgements.

### Claim 11 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to generate a bundled ACK bit comprising a logical AND operation on the plurality of bits of the original ACK codebook; and the ACK payload comprises joint encoding of the bundled ACK bit and the information related to the quantity of positive acknowledgements.

### Claim 12 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to generate a bundled ACK bit comprising a logical AND operation on the plurality of bits of the original ACK codebook; and the information related to the quantity of positive acknowledgements is in response to the bundled ACK bit indicating all positive acknowledgements, or in response to the bundled ACK bit indicating at least one negative acknowledgement (NACK).

### Claim 13 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to generate a bundled ACK bit comprising a logical AND operation on the plurality of bits of the original ACK codebook; and the information related to the quantity of positive acknowledgements is in response to the bundled ACK bit indicating all positive acknowledgements, the information related to the quantity of positive acknowledgements being output for transmission in a second part, in response to a first part indicating the bundled ACK bit corresponds to the all positive acknowledgements.

### Claim 14 (depends on 1)

The apparatus of claim 1, in which the information related to the quantity of positive acknowledgements comprises a quantity of bits bundled together, the quantity of bits including positive acknowledgements (ACKs) and negative acknowledgements (NACKs).

### Claim 15 (depends on 1)

The apparatus of claim 1, in which the at least one processor is further configured to execute the instructions to cause the apparatus to perform a logical AND operation on the plurality of bits of the original ACK codebook.

### Claim 16 (depends on 1)

The apparatus of claim 1, further comprising:
a transmitter; and
a receiver, in which:
execution of the instructions further cause the apparatus to:
transmit, via the transmitter, the ACK payload, and
receive, via the receiver, the downlink transmissions; and
the apparatus is configured as a user equipment (UE).

### Claim 17

An apparatus for wireless communication, comprising:
at least one memory comprising instructions; and
at least one processor configured to execute the instructions to cause the apparatus to:
output, for transmission, downlink transmissions; and
obtain an acknowledgement (ACK) payload comprising a modified original ACK codebook and information related to a quantity of one or more positive acknowledgements for the downlink transmissions.

### Claim 18 (depends on 17)

The apparatus of claim 17, in which the at least one processor is further configured to execute the instructions to cause the apparatus to output, for transmission, a request for an unbundled ACK retransmission in response to the quantity of one or more positive acknowledgements not matching an expected value.

### Claim 19 (depends on 17)

The apparatus of claim 17, in which the at least one processor is further configured to execute the instructions to cause the apparatus to reschedule the downlink transmissions in response to the quantity of one or more positive acknowledgements not matching an expected value.

### Claim 20 (depends on 17)

The apparatus of claim 17, in which the payload comprises a first bit associated with the modified original ACK codebook and at least one second bit associated with the information related to the quantity of positive acknowledgements.

### Claim 21 (depends on 17)

The apparatus of claim 17, in which the at least one processor is further configured to execute the instructions to cause the apparatus to obtain a codepoint comprising one or more bits that jointly indicate the modified original ACK codebook and the information related to the quantity of positive acknowledgements.

### Claim 22 (depends on 17)

The apparatus of claim 17, further comprising:
a transmitter; and
a receiver, in which:
execution of the instructions further cause the apparatus to:
transmit, via the transmitter, the downlink transmissions, and
receive, via the receiver, the acknowledgement (ACK) payload comprising the modified original ACK codebook and information related to the quantity of one or more positive acknowledgements for the downlink transmissions; and
the apparatus is configured as a network device.

### Claim 23

A method for wireless communication at a wireless node, comprising:
obtaining downlink transmissions;
generating an original acknowledgement (ACK) codebook based on whether each of the downlink transmissions is successfully decoded;
modifying the original ACK codebook by transforming a plurality of bits of the original ACK codebook;
generating an ACK payload comprising the modified original ACK codebook and information related to a quantity of one or more positive acknowledgements for the downlink transmissions; and
outputting, for transmission, the ACK payload.