# US 11,910,211 B2 · User terminal and base station

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- Number: US 11,910,211 B2
- Document ID: US11910211B2
- Status: Granted
- Kind: B2
- Application number: 17/643,374
- Filed: 2021-12-08
- Published: 2022-03-31
- Granted: 2024-02-20
- Earliest claimed: 2015-01-30
- Assignees: KYOCERA Corporation
- Applicants: KYOCERA Corporation
- Inventors: Naohisa Matsumoto; Kugo Morita; Hiroyuki Adachi; Hiroyuki Urabayashi; Chiharu Yamazaki
- Web page: https://patentgrep.com/patent/US11910211B2

## CPC

- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 16/14: Spectrum sharing arrangements {between different networks}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 36/0058: {Transmission of hand-off measurement information, e.g. measurement reports}
- 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 equipment, method used in a user equipment, and an apparatus for a user equipment include receiving from a first cell operated in a licensed band, configuration information configuring a second cell operated in an unlicensed band, performing a listen-before-talk (LBT) procedure on the second cell, counting a number of failures of the LBT procedure on the second cell, and transmitting information based on the number of failures of the LBT procedure on the second cell, to the first cell operated in the licensed band, the information indicating the failure of the LBT procedure on the second cell.

## Claims

### Claim 1

A user equipment comprising:
a processor and a memory coupled to the processor, the processor configured to receive from a first cell operated in a licensed band, configuration information configuring a second cell operated in an unlicensed band,
perform a listen-before-talk (LBT) procedure on the second cell during each of a plurality of periodic intervals,
count a number of failures of the LBT procedure on the second cell based on the LBT procedure performed on each of the plurality of periodic intervals, and
transmit information based on the number of failures of the LBT procedure on the second cell, to the first cell operated in the licensed band, the information indicating the failure of the LBT procedure on the second cell, wherein the number is larger than 1.

### Claim 2

An apparatus for a user equipment, the apparatus comprising:
a processor and a memory coupled to the processor, the processor configured to
receive from a first cell operated in a licensed band, configuration information configuring a second cell operated in an unlicensed band,
perform a listen-before-talk (LBT) procedure on the second cell during each of a plurality of periodic intervals,
count a number of failures of the LBT procedure on the second cell based on the LBT procedure performed on each of the plurality of periodic intervals, and
transmit information based on the number of failures of the LBT procedure on the second cell, to the first cell operated in the licensed band, the information indicating the failure of the LBT procedure on the second cell, wherein the number is larger than 1.

### Claim 3

A method used in a user equipment, the method comprising:
receiving from a first cell operated in a licensed band, configuration information configuring a second cell operated in an unlicensed band,
performing a listen-before-talk (LBT) procedure on the second cell during each of a plurality of periodic intervals,
counting a number of failures of the LBT procedure on the second cell based on the LBT procedure performed on each of the plurality of periodic intervals, and
transmitting information based on the number of failures of the LBT procedure on the second cell, to the first cell operated in the licensed band, the information indicating the failure of the LBT procedure on the second cell, wherein the number is larger than 1.