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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Patent number: 12289700Abstract: 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: GrantFiled: February 17, 2020Date of Patent: April 29, 2025Assignee: NTT DOCOMO, INC.Inventors: Daiki Takeda, Kazuaki Takeda, Takayuki Isogawa, Takuma Takada
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Publication number: 20250119908Abstract: A communication device includes a transmission unit that, when priority of uplink data is predetermined priority, preferentially over an operation concerning mobility, transmits a buffer status report linked with the uplink data to a base station and a reception unit that receives, from the base station, an uplink scheduling grant corresponding to the buffer status report.Type: ApplicationFiled: February 14, 2023Publication date: April 10, 2025Applicant: Sony Group CorporationInventors: Takuma TAKADA, Naoyuki TOYODA, Masahiko IKEDA, Yoshio KONNO, Yojiro SHIMIZU
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Patent number: 12273755Abstract: 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.Type: GrantFiled: May 10, 2019Date of Patent: April 8, 2025Assignee: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Takuma Takada, Naoki Fujimura, Hiroki Harada
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Publication number: 20250080201Abstract: A terminal, as disclosed, includes a receiver that receives a channel state information reference signal (CSI-RS) in a downlink; and a controller that determines, in a higher layer measurement based on the CSI-RS, that a delay time based on at least one of a number of samples used in the measurement or a scaling factor indicating an overlap between a resource for the CSI-RS and a measurement gap is included in a measurement time. If the resource for the CSI-RS partially overlaps a periodicity of the measurement gap, the controller determines that the scaling factor indicating the overlap between the resource for the CSI-RS and the measurement gap is a value based on a periodicity of the resource for the CSI-RS and the periodicity of the measurement gap. In other aspects, a base station, a communication method, and a communication system are also disclosed.Type: ApplicationFiled: November 20, 2024Publication date: March 6, 2025Applicant: NTT DOCOMO, INC.Inventors: Tomoki Yokokawa, Yuichi Kakishima, Takuma Takada
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Patent number: 12200530Abstract: A terminal includes a receiving unit that receives a block and a reference signal that is for measuring a channel state, wherein the block includes a synchronization signal and system information; and a control unit that measures L1-SINR (Layer1 Signal to interference plus noise power ratio) based on the block including the synchronization signal and the system information, the reference signal for measuring the channel state, and measurement using a resource for measuring interference, wherein the control unit determines a period of measurement of the L1-SINR based on a configuration of the resource for measuring the interference.Type: GrantFiled: October 15, 2020Date of Patent: January 14, 2025Assignee: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Takuma Takada
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Patent number: 12177799Abstract: 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.Type: GrantFiled: October 3, 2019Date of Patent: December 24, 2024Assignee: NTT DOCOMO, INC.Inventors: Daiki Takeda, Hiroki Harada, Takuma Takada
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Patent number: 12156057Abstract: 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: GrantFiled: August 15, 2019Date of Patent: November 26, 2024Assignee: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Tooru Uchino, Takuma Takada, Xiaolin Hou, Lihui Wang
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Publication number: 20240356620Abstract: A communication device includes a communication unit and a control unit. The communication unit performs wireless communication using at least one of a plurality of beams. The control unit acquires service communication quality corresponding to quality requested on a service. The control unit obtains, by estimation, an estimated communication quality achievable by the communication unit, based on a radio wave propagation environment. Even in a case where a beam quality of a non-currently working beam, a beam which is not being used for wireless communication, is higher than the beam quality of a currently working beam, which is being used for wireless communication, the control unit maintains the communication by the currently working beam in a case where the estimated communication quality is the service communication quality or more. Where the estimated communication quality is below the service communication quality, the control unit determines switching of the beam.Type: ApplicationFiled: March 10, 2022Publication date: October 24, 2024Applicant: Sony Group CorporationInventors: Masahiko IKEDA, Naoyuki TOYODA, Takuma TAKADA, Yojiro SHIMIZU, Yoshio KONNO
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Patent number: 12088515Abstract: 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: GrantFiled: February 14, 2019Date of Patent: September 10, 2024Assignee: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
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Patent number: 12082150Abstract: 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: GrantFiled: July 5, 2019Date of Patent: September 3, 2024Assignee: NTT DOCOMO, INC.Inventors: Daiki Takeda, Takuma Takada
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Patent number: 12075274Abstract: 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: GrantFiled: March 29, 2019Date of Patent: August 27, 2024Assignee: NTT DOCOMO, INC.Inventors: Takuma Takada, Naoki Fujimura
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Patent number: 12074656Abstract: A terminal includes a receiving unit that receives a reference signal for acquiring a channel state and a control unit that performs measurement related to RSRP (Reference signal received power), based on a result of receiving the reference signal, and subcarrier spacing to be applied to the reference signal.Type: GrantFiled: December 13, 2019Date of Patent: August 27, 2024Assignee: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Takuma Takada
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Patent number: 12063521Abstract: 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: GrantFiled: March 20, 2019Date of Patent: August 13, 2024Assignee: NTT DOCOMO, INC.Inventors: Naoki Fujimura, Takuma Takada, Yuichi Kakishima
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Patent number: 12022346Abstract: 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: GrantFiled: August 15, 2019Date of Patent: June 25, 2024Assignee: NTT DOCOMO, INC.Inventor: Takuma Takada
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Patent number: 11968545Abstract: 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: GrantFiled: March 29, 2019Date of Patent: April 23, 2024Assignee: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
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Patent number: 11930553Abstract: 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: GrantFiled: August 9, 2018Date of Patent: March 12, 2024Assignee: NTT DOCOMO, INC.Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
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Patent number: 11930560Abstract: 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: GrantFiled: February 21, 2019Date of Patent: March 12, 2024Assignee: NTT DOCOMO, INC.Inventors: Takuma Takada, Yuta Oguma
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Patent number: 11917438Abstract: 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: GrantFiled: November 9, 2018Date of Patent: February 27, 2024Assignee: NTT DOCOMO, INC.Inventors: Naoki Fujimura, Takuma Takada
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Publication number: 20230361892Abstract: A terminal includes a receiving unit that receives a reference signal for acquiring a channel state and a control unit that performs measurement related to RSRP (Reference signal received power), based on a result of receiving the reference signal, and subcarrier spacing to be applied to the reference signal.Type: ApplicationFiled: December 13, 2019Publication date: November 9, 2023Applicant: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Takuma Takada
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Publication number: 20230300650Abstract: A terminal includes a receiving unit that receives a block and a reference signal that is for measuring a channel state, wherein the block includes a synchronization signal and system information; and a control unit that measures L1-SINR (Layer1 Signal to interference plus noise power ratio) based on the block including the synchronization signal and the system information, the reference signal for measuring the channel state, and measurement using a resource for measuring interference, wherein the control unit determines a period of measurement of the Ll-SINR based on a configuration of the resource for measuring the interference.Type: ApplicationFiled: October 15, 2020Publication date: September 21, 2023Applicant: NTT DOCOMO, INC.Inventors: Yuichi Kakishima, Takuma Takada