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).

  • Patent number: 12289700
    Abstract: 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: Grant
    Filed: February 17, 2020
    Date of Patent: April 29, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Daiki Takeda, Kazuaki Takeda, Takayuki Isogawa, Takuma Takada
  • Publication number: 20250119908
    Abstract: 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: Application
    Filed: February 14, 2023
    Publication date: April 10, 2025
    Applicant: Sony Group Corporation
    Inventors: Takuma TAKADA, Naoyuki TOYODA, Masahiko IKEDA, Yoshio KONNO, Yojiro SHIMIZU
  • Patent number: 12273755
    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.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: April 8, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Takuma Takada, Naoki Fujimura, Hiroki Harada
  • Publication number: 20250080201
    Abstract: 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: Application
    Filed: November 20, 2024
    Publication date: March 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomoki Yokokawa, Yuichi Kakishima, Takuma Takada
  • Patent number: 12200530
    Abstract: 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: Grant
    Filed: October 15, 2020
    Date of Patent: January 14, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Takuma Takada
  • Patent number: 12177799
    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.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: December 24, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Daiki Takeda, Hiroki Harada, Takuma Takada
  • Patent number: 12156057
    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.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: November 26, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Tooru Uchino, Takuma Takada, Xiaolin Hou, Lihui Wang
  • Publication number: 20240356620
    Abstract: 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: Application
    Filed: March 10, 2022
    Publication date: October 24, 2024
    Applicant: Sony Group Corporation
    Inventors: Masahiko IKEDA, Naoyuki TOYODA, Takuma TAKADA, Yojiro SHIMIZU, Yoshio KONNO
  • Patent number: 12088515
    Abstract: 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: Grant
    Filed: February 14, 2019
    Date of Patent: September 10, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
  • Patent number: 12082150
    Abstract: 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: Grant
    Filed: July 5, 2019
    Date of Patent: September 3, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Daiki Takeda, Takuma Takada
  • Patent number: 12075274
    Abstract: 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: Grant
    Filed: March 29, 2019
    Date of Patent: August 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Naoki Fujimura
  • Patent number: 12074656
    Abstract: 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: Grant
    Filed: December 13, 2019
    Date of Patent: August 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Takuma Takada
  • Patent number: 12063521
    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.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 13, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Naoki Fujimura, Takuma Takada, Yuichi Kakishima
  • Patent number: 12022346
    Abstract: 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: Grant
    Filed: August 15, 2019
    Date of Patent: June 25, 2024
    Assignee: NTT DOCOMO, INC.
    Inventor: Takuma Takada
  • Patent number: 11968545
    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.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: April 23, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
  • Patent number: 11930553
    Abstract: 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: Grant
    Filed: August 9, 2018
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Hiroki Harada, Naoki Fujimura
  • Patent number: 11930560
    Abstract: 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: Grant
    Filed: February 21, 2019
    Date of Patent: March 12, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Takuma Takada, Yuta Oguma
  • Patent number: 11917438
    Abstract: 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: Grant
    Filed: November 9, 2018
    Date of Patent: February 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Naoki Fujimura, Takuma Takada
  • Publication number: 20230361892
    Abstract: 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: Application
    Filed: December 13, 2019
    Publication date: November 9, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Takuma Takada
  • Publication number: 20230300650
    Abstract: 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: Application
    Filed: October 15, 2020
    Publication date: September 21, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Takuma Takada