Patents by Inventor Takuma Takada
Takuma Takada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220295303Abstract: 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.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220295370Abstract: A terminal determines an interrupt time applied to a transition from a transition source cell to a transition destination cell. Specifically, the terminal changes a value of the interrupt time based on a combination of subcarrier spacings set in the transition source cell and the transition destination cell.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventor: Takuma Takada
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Publication number: 20220295301Abstract: A UE receives a radio signal via a receive beam (Rx). 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 200 shortens at least any one of a cell detection time and a measurement time for an upper layer in a case of controlling the receive beam in the second state as compared with a case of controlling the receive beam in the first state.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220295300Abstract: 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 directs at least one receive beam to a serving cell and directs another receive beam to a direction different from the serving cell in a case of controlling the receive beam in the second state and executing configuration regarding a secondary cell.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hideaki Takahashi, Hiromasa Umeda
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Publication number: 20220295583Abstract: A UE determines frequency allocation (Contiguous/Non-contiguous) of carriers that the UE supports and transmits, to a network, allocation information that can be used to identify the determined frequency allocation. The frequency allocation is applied to dual connectivity over different specific frequency bands.Type: ApplicationFiled: August 15, 2019Publication date: September 15, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiromasa Umeda, Yuta Oguma
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Publication number: 20220286880Abstract: 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.Type: ApplicationFiled: August 15, 2019Publication date: September 8, 2022Applicant: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Tooru Uchino, Takuma Takada, Xiaolin Hou, Lihui Wang
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Patent number: 11419085Abstract: A user apparatus for communicating with a first base station apparatus using a first RAT (Radio Access Technology) and a second base station apparatus using a second RAT includes a reception unit configured to receive, from the first base station apparatus, a configuration for measuring a timing difference between a cell of the first base station apparatus and a cell of the second base station apparatus; a control unit configured to perform measurement with respect to a cell of the second RAT based on the configuration for measuring the timing difference; and a transmission unit configured to transmit, to the first base station apparatus, a result of the performed measurement, wherein the configuration for measuring the timing difference includes information indicating an upper limit of a number of cells of the second RAT.Type: GrantFiled: February 22, 2019Date of Patent: August 16, 2022Assignee: NTT DOCOMO, INC.Inventors: Hiroki Harada, Naoki Fujimura, Takuma Takada
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Publication number: 20220240221Abstract: A terminal includes a reception unit configured to receive, from a base station, information for requesting a terminal capability report related to a wake-up signal associated with a paging occasion and configuration information related to at least one of a first wake-up signal and a second wake-up signal, a transmission unit configured to transmit the terminal capability report related to the wake-up signal to the base station, and a control unit configured to determine a configuration of the first wake-up signal and a configuration of the second wake-up signal based on the configuration information related to the wake-up signal, and the reception unit receives the wake-up signal and paging associated with the wake-up signal from the base station, and the control unit determines the configuration of the first wake-up signal from a value based on the configuration of the second wake-up signal.Type: ApplicationFiled: July 5, 2019Publication date: July 28, 2022Applicant: NTT DOCOMO, INC.Inventors: Daiki Takeda, Takuma Takada
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Publication number: 20220201504Abstract: 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.Type: ApplicationFiled: March 20, 2019Publication date: June 23, 2022Applicant: NTT DOCOMO, INC.Inventors: Naoki Fujimura, Takuma Takada, Yuichi Kakishima
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Publication number: 20220174507Abstract: 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.Type: ApplicationFiled: March 29, 2019Publication date: June 2, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
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Publication number: 20220174529Abstract: Provided is a user equipment including: a receiving unit that receives at least one of configuration information of inter-radio access technology (RAT) measurement in a frequency range (FR ) 2, configuration information of inter-RAT measurement other than the FR2, and configuration information of a measurement gap for each user equipment from a base station apparatus; and a control unit that performs the inter-RAT measurement other than the FR2 within the measurement gap for each user equipment and performs the inter-RAT measurement in the FR2 outside the measurement gap for each user equipment.Type: ApplicationFiled: March 29, 2019Publication date: June 2, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Naoki Fujimura
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Publication number: 20220123878Abstract: A user equipment executes carrier aggregation using a plurality of component carriers allocated in a predetermined band in a predetermined frequency range (FR2). In a case where only a plurality of secondary component carriers is allocated in the predetermined band, the user equipment selects a secondary component carrier that is a reception quality measurement target among the plurality of secondary component carriers. In addition, the user equipment transmits a reception quality measurement result.Type: ApplicationFiled: February 14, 2019Publication date: April 21, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
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Publication number: 20220117029Abstract: A terminal is disclosed including a receiver that receives an instruction for a quality measurement of a cell in Dual Connectivity (DC), the cell being in an unconnected state; and a processor that performs the quality measurement in accordance with the instruction, wherein the processor performs the quality measurement in a measurement period based on a discontinuous reception configuration in a Secondary Cell Group (SCG). In other aspects, a measurement method for a terminal is also disclosed.Type: ApplicationFiled: August 9, 2018Publication date: April 14, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
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Publication number: 20220078603Abstract: A user apparatus includes a reception unit that receives, from a base station, information requesting a capability report of the user apparatus; a transmission unit that transmits, to the base station, the capability report of the user apparatus; and a control unit that receives a first signal transmitted from the base station, and a second signal transmitted from another base station or a third signal transmitted from the base station, within a maximum receive timing difference associated with a band combination included in the capability report of the user apparatus, wherein the band combination includes a combination of a band of the first signal and a band of the second signal or the third signal, a radio access technology for the first signal differs from that of the second signal, and the radio access technologies for the first signal and for the third signal are the same.Type: ApplicationFiled: February 21, 2019Publication date: March 10, 2022Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Yuta Oguma
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Publication number: 20220046573Abstract: A terminal includes a receiving unit that receives information indicating whether each condition of one or more conditions for validating a time alignment is activated or deactivated; and a control unit that independently activates or deactivates each condition of the one or more conditions in accordance with the received information.Type: ApplicationFiled: February 17, 2020Publication date: February 10, 2022Applicant: NTT DOCOMO, INC.Inventors: Daiki Takeda, Kazuaki Takeda, Takayuki Isogawa, Takuma Takada
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Publication number: 20220046455Abstract: A user equipment controls a start timing of a measurement gap. Specifically, the user equipment applies the start timing of the measurement gap according to a type of a reference timing used in a target cell.Type: ApplicationFiled: September 27, 2018Publication date: February 10, 2022Applicant: NTT DOCOMO, INC.Inventor: Takuma Takada
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Publication number: 20210392536Abstract: A user device includes a receiving unit that receives from a base station device a measurement configuration including a condition for triggering a measurement report; a control unit that executes a measurement based on the measurement configuration; and a transmitting unit that transmits a measurement report to the base station device in response to the condition for triggering a measurement report being met, wherein the control unit modifies the measurement configuration based on a parameter indicating mobility capability or based on a type of user device.Type: ApplicationFiled: November 9, 2018Publication date: December 16, 2021Applicant: NTT DOCOMO, INC.Inventors: Naoki Fujimura, Takuma Takada
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Publication number: 20210345271Abstract: A user equipment includes a control unit configured to determine, based on a difference between a first timing advance value of a first cell group in dual connectivity and a second timing advance value of a second cell group in the dual connectivity, a transmission timing for the first cell group and a transmission timing for the second cell group, and a transmitting unit configured to perform transmission in the first cell group based on the determined transmission timing for the first cell group, and perform transmission in the second cell group based on the determined transmission timing for the second cell group.Type: ApplicationFiled: August 29, 2019Publication date: November 4, 2021Applicant: NTT DOCOMO, INC.Inventors: Takuma Takada, Tooru Uchino, Hiroki Harada
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Publication number: 20210258812Abstract: Measurement periods for quality measurement are specified for a first signal and a second signal. A user terminal includes: a reception section that receives the first signal based on first radio communication and the second signal based on second radio communication; and a control section that controls priority levels for quality measurements of the first radio communication and the second radio communication. The quality measurements are performed using the measurement periods.Type: ApplicationFiled: June 28, 2018Publication date: August 19, 2021Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Naoki Fujimura, Takuma Takada
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Publication number: 20210168745Abstract: 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.Type: ApplicationFiled: April 18, 2019Publication date: June 3, 2021Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Naoki Fujimura, Takuma Takada