公开(公告)号：US12273755B2

公开(公告)日：2025-04-08

申请号：US17608903

申请日：2019-05-10

Applicant: NTT DOCOMO, INC.

Inventor： Yuichi Kakishima ,  Takuma Takada ,  Naoki Fujimura ,  Hiroki Harada

IPC: H04W24/10 ,  H04B17/318 ,  H04L5/00 ,  H04W16/28

Abstract: A user equipment includes a transmitting unit that transmits a measurement result of a secondary cell; a receiving unit that receives a signal to activate the secondary cell; and a control unit that uses previously obtained information of the secondary cell to activate the secondary cell when a predetermined condition associated with a power class of the user equipment is satisfied.

公开(公告)号：US12156057B2

公开(公告)日：2024-11-26

申请号：US17631237

申请日：2019-08-15

Applicant: NTT DOCOMO, INC.

Inventor： Yuichi Kakishima ,  Tooru Uchino ,  Takuma Takada ,  Xiaolin Hou ,  Lihui Wang

IPC: H04W24/08 ,  H04L1/20 ,  H04W56/00

Abstract: A terminal includes a receiver that receives an instruction signal indicating to modify a configuration of a radio link monitoring; and a controller that modifies a parameter used for the configuration of the radio link monitoring in accordance with the instruction signal received by the receiver.

公开(公告)号：US12063521B2

公开(公告)日：2024-08-13

申请号：US17439260

申请日：2019-03-20

Applicant: NTT DOCOMO, INC.

Inventor： Naoki Fujimura ,  Takuma Takada ,  Yuichi Kakishima

IPC: H04W16/28 ,  H04W24/10 ,  H04W76/20

CPC classification number: H04W16/28 ,  H04W24/10 ,  H04W76/20

Abstract: A user equipment includes a reception unit that performs a measurement for determining an optimum beam from among a plurality of reception beams that is usable in the user equipment; and a control unit that selects, based on information of a past measurement by the reception unit, a reception beam to be used in the user equipment, upon receiving, by the reception unit, a signal including information indicating to update a configuration.

公开(公告)号：US20220346043A1

公开(公告)日：2022-10-27

申请号：US17765231

申请日：2019-10-03

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  Hiroki Harada ,  Takuma Takada

IPC: H04W56/00 ,  H04W24/10

Abstract: A terminal includes a controller configured to determine a candidate resource location where a resynchronization signal of a neighbor cell is possibly transmitted based on information on the neighbor cell; and a receiver configured to receive the resynchronization signal of the neighbor cell based on the candidate resource location.

公开(公告)号：US20220295303A1

公开(公告)日：2022-09-15

申请号：US17635277

申请日：2019-08-15

Applicant: NTT DOCOMO, INC.

Inventor： Takuma Takada ,  Hideaki Takahashi ,  Hiromasa Umeda

IPC: H04W16/28 ,  H04W24/10 ,  H04L5/00

Abstract: A UE receives a radio signal via a receive beam. The UE controls the receive beam in a first state or in a second state where control of the receive beam is different from that of the first state. The UE executes received power measurement using a synchronization signal block by simultaneously using a plurality of the receive beams in a case of controlling the receive beam in the second state.

公开(公告)号：US20210168745A1

公开(公告)日：2021-06-03

申请号：US17047861

申请日：2019-04-18

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Naoki Fujimura ,  Takuma Takada

IPC: H04W56/00 ,  H04W24/10

Abstract: A terminal is disclosed including a processor that scales a delay requirement of an intra-frequency measurement based on a synchronization signal block by a scaling factor corresponding to each of a plurality of carriers; and a receiver that receives the synchronization signal block in each of the plurality of carriers, wherein a specified carrier out of the plurality of carriers satisfies a condition, wherein a first scaling factor for an unspecified carrier out of the plurality of carriers is based on a number of the plurality of carriers, and wherein a second scaling factor for the specified carrier is not based on the number of the plurality of carriers. In other aspects, a radio communication method and a base station are also disclosed.

公开(公告)号：US11968545B2

公开(公告)日：2024-04-23

申请号：US17441561

申请日：2019-03-29

Applicant: NTT DOCOMO, INC.

Inventor： Takuma Takada ,  Hiroki Harada ,  Naoki Fujimura

IPC: H04W16/28 ,  H04W24/08

CPC classification number: H04W16/28 ,  H04W24/08

Abstract: A user equipment includes a receiving unit that receives a reference signal from a secondary cell; a transmitting unit that transmits a result of a measurement of the reference signal; and a control unit that selects, when the secondary cell is deactivated after the transmitting unit transmits the result of the measurement and the secondary cell is reactivated, and when a time interval from a timing at which the transmitting unit transmits the result of the measurement until a timing at which the secondary cell is reactivated is within a predetermined time interval, a receiving beam that is applied to the secondary cell upon transmitting the result of the measurement by the transmitting unit, as a receiving beam to be applied to the reactivated secondary cell.

公开(公告)号：US20230035994A1

公开(公告)日：2023-02-02

申请号：US17791715

申请日：2020-02-13

Applicant: NTT DOCOMO, INC.

Inventor： Takuma Takada ,  Hideaki Takahashi

IPC: H04W24/10 ,  H04W8/22

Abstract: A terminal includes, a reception unit configured to receive a configuration regarding measurement from a base station, a control unit configurated to execute measurement based on the configuration regarding the measurement, and a transmission unit configured to transmit a result of the executed measurement to the base station, wherein the control unit is configured to identify a measurement execution interval based on the configuration regarding the measurement, and to configure a communication interruption period, at a head and a tail of the measurement execution interval, in accordance with a capability of the terminal.

公开(公告)号：US11523295B2

公开(公告)日：2022-12-06

申请号：US16763095

申请日：2017-11-16

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Yousuke Sano ,  Takuma Takada

IPC: H04W24/10 ,  H04W28/08 ,  H04W36/00 ,  H04W56/00 ,  H04W72/04 ,  H04W76/15 ,  H04W84/02 ,  H04W88/06 ,  H04W88/10 ,  H04W92/02 ,  H04W92/10

Abstract: A user apparatus communicates with a first base station apparatus and a second base station apparatus, and the user apparatus includes a receiving unit configured to receive, from the first base station apparatus, a configuration for measuring a timing difference between the first base station apparatus and the second base station apparatus; a control unit configured to execute measurement with respect to the second base station apparatus, based on the configuration for measuring the timing difference; and a transmitting unit configured to transmit a result of the executed measurement, to the first base station apparatus, wherein the executed measurement is executed before starting to communicate with the second base station apparatus.

公开(公告)号：US20220322122A1

公开(公告)日：2022-10-06

申请号：US17596157

申请日：2019-06-14

Applicant: NTT DOCOMO, INC.

Inventor： Naoki Fujimura ,  Takuma Takada

IPC: H04W24/10 ,  H04W4/02 ,  H04W76/15

Abstract: A terminal includes a reception unit that receives, from a base station, a configuration related to at least one of measurement and reporting, a control unit that performs the measurement based on the configuration related to the at least one of the measurement and the reporting, and a transmission unit that transmits a measurement report to the base station based on the result of the performed measurement. The control unit limits a period related to the measurement or changes the number of times an operation related to the measurement is performed based on whether the terminal is in a specific environment.