# US 2023/0054553 A1 · Terminal and communication method

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- Number: US 2023/0054553 A1
- Document ID: US20230054553A1
- Status: Published application
- Kind: A1
- Application number: 17/797,302
- Filed: 2020-02-06
- Published: 2023-02-23
- Earliest claimed: 2020-02-06
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Shinya Kumagai; Satoshi Nagata; Lihui Wang; Xiaolin Hou
- Web page: https://patentgrep.com/patent/US20230054553A1

## CPC

- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 1/18: Automatic repetition systems, e.g. Van Duuren systems
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes
- 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 terminal includes a reception section that receives downlink feedback information (DFI); and a control section that terminates repetition of data in uplink transmission in a case where an acknowledgement (ACK) is detected in the DFI. In other aspects, a base station, a radio communication method, and a radio communication system comprising a terminal and a base station are also disclosed.

## Claims

### Claim at position 1

1-5. (canceled)

### Claim 6

A terminal, comprising:
a reception section that receives downlink feedback information (DFI); and
a control section that terminates repetition of data in uplink transmission in a case where an acknowledgement (ACK) is detected in the DFI.

### Claim 7 (depends on 6)

The terminal according to claim 6, wherein the control section terminates the repetition in a case where a gap between an end symbol of a downlink control channel including the DFI and a start symbol of an uplink data channel including the data is equal to or more than N2 symbol (N2 is an integer value of 1 or more).

### Claim 8 (depends on 7)

The terminal according to claim 7, wherein a value of the N2 is based on a processing capability of the terminal.

### Claim 9

A base station, comprising:
a control section that generates an acknowledgement (ACK) triggering termination of repetition of data in uplink transmission; and
a transmission section that transmits downlink feedback information (DFI) including the ACK.

### Claim 10

A radio communication method, comprising:
receiving, by a terminal, downlink feedback information (DFI); and
terminating, by the terminal, repetition of data in uplink transmission in a case where an acknowledgement (ACK) is detected in the DFI.

### Claim 11

A radio communication system, comprising:
a base station; and
a terminal,
wherein, the base station includes:
a control section that generates an acknowledgement (ACK) triggering termination of repetition of data in uplink transmission; and
a transmission section that transmits downlink feedback information (DFI) including the ACK, and
wherein, the terminal includes:
a reception section that receives the DFI; and
a control section that terminates the repetition of the data in the uplink transmission in a case where the acknowledgement (ACK) is detected in the DFI.