# US 11,310,752 B2 · Base station and radio terminal

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- Number: US 11,310,752 B2
- Document ID: US11310752B2
- Status: Granted
- Kind: B2
- Application number: 16/899,360
- Filed: 2020-06-11
- Published: 2020-09-24
- Granted: 2022-04-19
- Earliest claimed: 2016-02-03
- Assignees: KYOCERA Corporation
- Applicants: KYOCERA Corporation
- Inventors: Hiroyuki Urabayashi
- Web page: https://patentgrep.com/patent/US11310752B2

## CPC

- H04W 56/0005: {synchronizing of arrival of multiple uplinks}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0092: {Indication of how the channel is divided}
- H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands}
- H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence)
- 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)}
- H04L 27/26136: {Pilot sequence conveying additional information}
- H04L 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length}
- H04W 8/245: {from a network towards a terminal}
- H04W 56/00: Synchronisation arrangements
- H04W 72/04: Wireless resource allocation
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- 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

A user equipment, an apparatus for controlling user equipment, and a method receive measurement configuration information from a first cell, the measurement configuration information indicating a subcarrier spacing applied to a second cell, and perform measurement on the second cell based on the measurement configuration information.

## Claims

### Claim 1

A user equipment comprising:
a receiver configured to receive measurement configuration information broadcasted from a first cell, the measurement configuration information indicating a plurality of subcarrier spacings each applied to a second cell of a plurality of second cells, the plurality of subcarrier spacings includes at least a first subcarrier spacing higher than 15 kHz, the first subcarrier spacing applied to downlink transmission of the second cell; and
a controller configured to perform measurement on each of the second cells based on the measurement configuration information.

### Claim 2

An apparatus for controlling a user equipment, the apparatus comprising:
a processor and a memory, the processor configured to
receive measurement configuration information broadcasted from a first cell, the measurement configuration information indicating a plurality of subcarrier spacings each applied to a second cell of a plurality of second cells, the plurality of subcarrier spacings includes at least a first subcarrier spacing higher than 15 kHz, the first subcarrier spacing applied to downlink transmission of the second cell; and
perform measurement on each of the second cells based on the measurement configuration information.

### Claim 3

A method used in a user equipment, the method comprising:
receiving measurement configuration information broadcasted from a first cell, the measurement configuration information indicating a plurality of subcarrier spacings each applied to a second cell of a plurality of second cells, the plurality of subcarrier spacings includes at least a first subcarrier spacing higher than 15 kHz, the first subcarrier spacing applied to downlink transmission of the second cell; and
performing measurement on each of the second cells based on the measurement configuration information.

### Claim 4 (depends on 1)

The user equipment according to claim 1, wherein the measurement configuration information includes information identifying the second cells.

### Claim 5 (depends on 1)

The user equipment according to claim 1, wherein the controller is configured to report measurement results on each of the second cells, to the first cell.

### Claim 6 (depends on 1)

The user equipment according to claim 1, wherein the plurality of subcarrier spacings further includes at least a second subcarrier spacing higher than 30 kHz.