# US 2020/0288442 A1 · User terminal and radio communication method

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- Number: US 2020/0288442 A1
- Document ID: US20200288442A1
- Status: Published application
- Kind: A1
- Application number: 16/645,406
- Filed: 2017-09-11
- Published: 2020-09-10
- Earliest claimed: 2017-09-11
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Daisuke Murayama; Hiroki Harada; Satoshi Nagata
- Web page: https://patentgrep.com/patent/US20200288442A1

## CPC

- H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)}
- 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- 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)
- H04W 56/00: Synchronisation arrangements
- H04W 56/001: {Synchronization between nodes}
- H04W 72/04: Wireless resource allocation
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- 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

To appropriately notify information of a control channel configuration domain in a radio communication system that uses a synchronization signal block, one aspect of a user terminal according to the present invention includes: a reception section that receives a Synchronization Signal (SS) block including given bit information indicating a configuration of a control resource set; and a control section that decides contents of the given bit information according to a subcarrier-spacing and/or a frequency band applied to transmission of the SS block, and controls reception of a downlink control channel.

## Claims

### Claim 1

A user terminal comprising:
a reception section that receives a Synchronization Signal (SS) block including given bit information indicating a configuration of a control resource set; and
a control section that decides contents of the given bit information according to a subcarrier-spacing and/or a frequency band applied to transmission of the SS block, and controls reception of a downlink control channel.

### Claim 2 (depends on 1)

The user terminal according to claim 1, wherein the control section decides the contents of the given bit information by referring to a different table based on the subcarrier-spacing and/or the frequency band applied to the transmission of the SS block.

### Claim 3 (depends on 2)

The user terminal according to claim 2, wherein at least a number of patterns of a start position of the control resource set is defined differently in the different table.

### Claim 4 (depends on 1)

The user terminal according to claim 1, wherein a number of bits of the given bit information differs according to the subcarrier-spacing and/or the frequency band applied to the transmission of the SS block.

### Claim 5 (depends on 1)

The user terminal according to claim 1, wherein a start position of the control resource set is defined by using an SS block index in at least one of the different tables.

### Claim 6

A radio communication method comprising:
receiving a Synchronization Signal (SS) block including given bit information indicating a configuration of a control resource set; and
deciding contents of the given bit information according to a subcarrier-spacing and/or a frequency band applied to transmission of the SS block, and controlling reception of a downlink control channel.

### Claim 7 (depends on 2)

The user terminal according to claim 2, wherein a number of bits of the given bit information differs according to the subcarrier-spacing and/or the frequency band applied to the transmission of the SS block.

### Claim 8 (depends on 3)

The user terminal according to claim 3, wherein a number of bits of the given bit information differs according to the subcarrier-spacing and/or the frequency band applied to the transmission of the SS block.

### Claim 9 (depends on 2)

The user terminal according to claim 2, wherein a start position of the control resource set is defined by using an SS block index in at least one of the different tables.

### Claim 10 (depends on 3)

The user terminal according to claim 3, wherein a start position of the control resource set is defined by using an SS block index in at least one of the different tables.

### Claim 11 (depends on 4)

The user terminal according to claim 4, wherein a start position of the control resource set is defined by using an SS block index in at least one of the different tables.