# US 11,445,533 B2 · PUCCH timing for terminal apparatus, base station apparatus, and communication method in a wireless communication system

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- Number: US 11,445,533 B2
- Document ID: US11445533B2
- Status: Granted
- Kind: B2
- Application number: 16/960,561
- Filed: 2019-01-09
- Published: 2020-10-22
- Granted: 2022-09-13
- Earliest claimed: 2018-01-10
- Assignees: Sharp Kabushiki Kaisha; FG Innovation Company Limited
- Applicants: SHARP Kabushiki Kaisha; FG Innovation Company Limited
- Inventors: Tomoki Yoshimura; Shouichi Suzuki; Wataru Ohuchi; Liqing Liu; Taewoo Lee
- Web page: https://patentgrep.com/patent/US11445533B2

## CPC

- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04W 72/1273: of downlink data flows
- H04L 1/1671: {the supervisory signal being transmitted together with control information}
- H04L 1/1678: {where the control information is for timing, e.g. time stamps}
- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)}
- H04L 1/1896: {ARQ related signaling}
- 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 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- 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 apparatus includes a receiver configured to receive a PDCCH including a DCI format, and a transmitter configured to transmit a PUCCH. In a case that the DCI format schedules a PDSCH and that a last OFDM symbol of the PDSCH is mapped in a first slot, the PUCCH is transmitted in a second slot, the number of slots from the first slot to the second slot is given based on a PDSCH-to-HARQ-timing-indicator field, and a length of each of the slots is given based on a subcarrier spacing configuration of the PUCCH.

## Claims

### Claim 1

A terminal apparatus in a wireless communication system, the terminal apparatus comprising:
a receiver configured to receive a physical downlink control channel (PDCCH) including a downlink control information (DCI) format; and
a transmitter configured to transmit a physical uplink control channel (PUCCH), wherein in a case that the DCI format schedules a physical downlink shared channel (PDSCH) and that a last orthogonal frequency division multiplexing (OFDM) symbol of the PDSCH is mapped in a first slot;
the PUCCH is transmitted in a second slot,
a number of slots from the first slot to the second slot is given based on a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ)-timing-indicator field, and
a length of each of the slots is given based on a subcarrier spacing configuration of the PUCCH.

### Claim 2 (depends on 1)

The terminal apparatus according to claim 1, wherein
The subcarrier spacing configuration of the PUCCH is a subcarrier spacing configuration that is configured for a band in which the PUCCH is transmitted.

### Claim 3

A base station apparatus in a wireless communication system, the base station apparatus comprising:
a transmitter configured to transmit a physical downlink control channel (PDCCH) including a downlink control information (DCI) format; and
a receiver configured to receive a physical uplink control channel (PUCCH), wherein in a case that the DCI format schedules a physical downlink shared channel (PDSCH) and that a last orthogonal frequency division multiplexing (OFDM) symbol of the PDSCH is mapped in a first slot;
the PUCCH is received in a second slot,
a number of slots from the first slot to the second slot is given based on a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ)-timing-indicator field, and
a length of each of the slots is given based on a subcarrier spacing configuration of the PUCCH.

### Claim 4 (depends on 3)

The base station apparatus according to claim 3, wherein the subcarrier spacing configuration of the PUCCH is a subcarrier spacing configuration that is configured for a band in which the PUCCH is received.

### Claim 5

A communication method used for a terminal apparatus in a wireless communication system, the communication method comprising:
receiving a physical downlink control channel (PDCCH) including a downlink control information (DCI) format; and
transmitting a physical uplink control channel (PUCCH), wherein in a case that the DCI format schedules a physical downlink shared channel (PDSCH) and that a last orthogonal frequency division multiplexing (OFDM) symbol of the PDSCH is mapped in a first slot;
the PUCCH is transmitted in a second slot,
a number of slots from the first slot to the second slot is given based on a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ)-timing-indicator field, and
a length of each of the slots is given based on a subcarrier spacing configuration of the PUCCH.

### Claim 6

A communication method used for a base station apparatus in a wireless communication system, the communication method comprising:
transmitting a physical downlink control channel (PDCCH) including a downlink control information (DCI) format; and
receiving a physical uplink control channel (PUCCH), wherein in a case that the DCI format schedules a physical downlink shared channel (PDSCH) and that a last orthogonal frequency division multiplexing (OFDM) symbol of the PDSCH is mapped in a first slot;
the PUCCH is received in a second slot,
a number of slots from the first slot to the second slot is given based on a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ)-timing-indicator field, and
a length of each of the slots is given based on a subcarrier spacing configuration of the PUCCH.