# US 2020/0404668 A1 · Base station apparatus, terminal apparatus, and communication method for these apparatuses

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- Number: US 2020/0404668 A1
- Document ID: US20200404668A1
- Status: Published application
- Kind: A1
- Application number: 16/954,882
- Filed: 2018-11-06
- Published: 2020-12-24
- Earliest claimed: 2017-12-21
- Assignees: Sharp Kabushiki Kaisha
- Applicants: Sharp Kabushiki Kaisha
- Inventors: OSAMU NAKAMURA; JUNGO GOTO; YASUHIRO HAMAGUCHI
- Web page: https://patentgrep.com/patent/US20200404668A1

## CPC

- H04W 72/53: based on regulatory allocation policies
- H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]}
- H04L 1/0026: {Transmission of channel quality indication}
- H04L 1/0027: {Scheduling of signalling, e.g. occurrence thereof}
- H04L 1/0046: {Code rate detection or code type detection (H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091)}
- H04L 1/0061: {Error detection codes}
- H04L 1/0072: {Error control for data other than payload data, e.g. control data}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes
- H04W 72/0466: {the resource being a scrambling code}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 76/11: Allocation or use of connection identifiers
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a radio receiving unit configured to receive a PDCCH for uplink transmission; a controller configured to decode the PDCCH; and a transmitter configured to transmit a PUSCH including semi-persistent CSI, wherein the controller receives a PDCCH including a CRC scrambled with an SP-CSI RNTI, the PDCCH includes at least a field related to an HARQ process number, and the controller validates the PDCCH in a case that at least the field related to the HARQ process number is a prescribed value.

## Claims

### Claim 1

A terminal apparatus for communicating with a base station apparatus, the terminal apparatus comprising:
a radio receiving unit configured to receive a PDCCH for uplink transmission;
a controller configured to decode the PDCCH; and
a transmitter configured to transmit a PUSCH including semi-persistent CSI, wherein
the controller receives a PDCCH including a CRC scrambled with an SP-CSI RNTI,
the PDCCH includes at least a field related to an HARQ process number, and
the controller validates the PDCCH in a case that at least the field related to the HARQ process number is a prescribed value.

### Claim 2 (depends on 1)

The terminal apparatus according to claim 1, wherein
the PDCCH further includes at least a field related to a redundancy version, and
the controller validates the PDCCH in a case that the field related to the redundancy version is a prescribed value.

### Claim 3 (depends on 1)

The terminal apparatus according to claim 1, wherein
the PDCCH is validated in a case that the PDCCH is a prescribed format.

### Claim 4 (depends on 1)

The terminal apparatus according to claim 1, wherein
the PDCCH includes a field for indicating one of multiple CSI reports.

### Claim 5

A base station apparatus for communicating with a terminal apparatus, the base station apparatus comprising:
a downlink control signal generation unit configured to generate a PDCCH for uplink transmission; and
a receiver configured to receive an SP-CSI, wherein
the PDCCH includes at least a field related to an HARQ process number, and
the downlink control signal generation unit configures at least the field related to the HARQ process number to a prescribed value, and further includes a CRC scrambled with an SP-CSI RNTI in the PDCCH.