# US 2020/0288456 A1 · User terminal and radio communication method

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- Number: US 2020/0288456 A1
- Document ID: US20200288456A1
- Status: Published application
- Kind: A1
- Application number: 16/644,878
- Filed: 2017-09-08
- Published: 2020-09-10
- Earliest claimed: 2017-09-08
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Yuki Matsumura; Kazuki Takeda; Satoshi Nagata
- Web page: https://patentgrep.com/patent/US20200288456A1

## CPC

- H04J 13/22: Allocation of codes with a zero correlation zone
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04J 3/16: in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted (H04J3/17, H04J3/24 take precedence)
- H04J 11/005: {of intercell interference}
- H04J 13/16: Code allocation
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence)
- H04L 27/2613: {Structure of the reference signals}
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

To appropriately notify UL control information in a future radio communication system, a user terminal includes: a transmitting section that transmits an uplink signal by using a code resource associated with a value of uplink control information; and a control section that controls determination of at least one transmission resource of a time resource, a frequency resource and the code resource used for the uplink signal based on indication information that is notified from a radio base station and indicates at least one resource of the time resource, the frequency resource and the code resource.

## Claims

### Claim 1

A user terminal comprising:
a transmitting section that transmits an uplink signal by using a code resource associated with a value of uplink control information; and
a control section that controls determination of at least one transmission resource of a time resource, a frequency resource and the code resource used for the uplink signal based on indication information that is notified from a radio base station and indicates at least one resource of the time resource, the frequency resource and the code resource.

### Claim 2 (depends on 1)

The user terminal according to claim 1, wherein the control section converts an identifier of the resource indicated by the indication information into an identifier of the transmission resource by using a calculation formula that uses a parameter notified from the radio base station.

### Claim 3 (depends on 2)

The user terminal according to claim 2, wherein the parameter includes a cell identifier.

### Claim 4 (depends on 1)

The user terminal according to claim 1, wherein the control section determines one of a plurality of calculation formulae based on information from the radio base station, and determines the transmission resource by using the determined calculation formula.

### Claim 5 (depends on 4)

The user terminal according to claim 4, wherein the plurality of calculation formulae include a calculation formula that uses an index of a symbol used for the uplink signal, and a calculation formula that does not use the index of the symbol used for the uplink signal.

### Claim 6

A radio communication method of a user terminal comprising:
transmitting an uplink signal by using a code resource associated with a value of uplink control information; and
controlling determination of at least one transmission resource of a time resource, a frequency resource and the code resource used for the uplink signal based on indication information that is notified from a radio base station and indicates at least one resource of the time resource, the frequency resource and the code resource.

### Claim 7 (depends on 2)

The user terminal according to claim 2, wherein the control section determines one of a plurality of calculation formulae based on information from the radio base station, and determines the transmission resource by using the determined calculation formula.

### Claim 8 (depends on 3)

The user terminal according to claim 3, wherein the control section determines one of a plurality of calculation formulae based on information from the radio base station, and determines the transmission resource by using the determined calculation formula.
