# US 11,452,099 B2 · User terminal and radio communication method

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- Number: US 11,452,099 B2
- Document ID: US11452099B2
- Status: Granted
- Kind: B2
- Application number: 16/967,978
- Filed: 2018-02-14
- Published: 2021-02-04
- Granted: 2022-09-20
- Earliest claimed: 2018-02-14
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Kazuki Takeda; Satoshi Nagata; Huiling Li; Lihui Wang; Chongning Na; Xiaolin Hou
- Web page: https://patentgrep.com/patent/US11452099B2

## CPC

- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04L 5/0057: {Physical resource allocation for CQI}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/1268: of uplink data flows
- H04W 88/02: Terminal devices
- 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 user terminal, according to the present invention, has a receiving section that receives resource information, which indicates a single or a plurality of uplink control channel resources, per configuration identifier related to channel state information (CSI) reporting, and a control section that selects an uplink control channel resource to use to transmit a plurality of CSIs, based on the resource information.

## Claims

### Claim 1

A terminal comprising:
a receiver that receives information, which indicates a plurality of uplink control channel (PUCCH) resources used by a plurality of channel state information (CSI) reports, configured by higher layer signaling; and
a processor that determines a single PUCCH resource, from the plurality of PUCCH resources, to be used for the plurality of CSI reports based on a capacity of each of the plurality of PUCCH resources,
wherein the capacity of each of the plurality of PUCCH resources is determined based on code rates of each of the plurality of PUCCH resources.

### Claim 2 (depends on 1)

The terminal according to claim 1, wherein, when the capacity of a first PUCCH resource is larger than the capacity of a second PUCCH resource among the plurality of PUCCH resources and when the second PUCCH resource is capable of transmitting all of the plurality of CSI reports, the processor determines the second PUCCH resource to be the single PUCCH resource to be used for the plurality of CSI reports, and when the second PUCCH resource is not capable of transmission all of the plurality of CSI reports, the processor determines the first PUCCH resource to be the single PUCCH resource to be used for the plurality of CSI reports.

### Claim 3

A radio communication method for a terminal, comprising:
receiving information, which indicates a plurality of uplink control channel (PUCCH) resources used by a plurality of channel state information (CSI) reports, configured by higher layer signaling; and
determining a single PUCCH resource, from the plurality of PUCCH resources, to be used for the plurality of CSI reports based on a capacity of each of the plurality of PUCCH resources,
wherein the capacity of each of the plurality of PUCCH resources is determined based on code rates of each of the plurality of PUCCH resources.

### Claim 4

A base station comprising:
a transmitter that transmits information, to a terminal, which indicates a plurality of uplink control channel (PUCCH) resources used by a plurality of channel state information (CSI) reports, by higher layer signaling; and
a processor that controls to determine, in the terminal, a single PUCCH resource, from the plurality of PUCCH resources, to be used for the plurality of CSI reports based on a capacity of each of the plurality of PUCCH resources,
wherein the capacity of each of the plurality of PUCCH resources is determined based on code rates of each of the plurality of PUCCH resources.

### Claim 5

A system comprising a base station and a terminal, wherein:
the base station comprises:
a transmitter that transmits information, to the terminal, which indicates a plurality of uplink control channel (PUCCH) resources used by a plurality of channel state information (CSI) reports, by higher layer signaling, and
the terminal comprises:
a receiver that receives the information; and
a processor that determines a single PUCCH resource, from the plurality of PUCCH resources, to be used for the plurality of CSI reports based on a capacity of each of the plurality of PUCCH resources,
wherein the capacity of each of the plurality of PUCCH resources is determined based on code rates of each of the plurality of PUCCH resources.