Patents by Inventor Yuki Nagata

Yuki Nagata 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).

  • Publication number: 20250063604
    Abstract: A terminal according to one aspect of the present disclosure includes a transmitting section that transmits a plurality of repetitions of a physical random access channel by using a plurality of different beams, and a control section that determines a reference beam corresponding to one of the plurality of different beams and that determines, on the basis of reception of a response to the physical random access channel, a subsequent uplink beam, the reception using the reference beam. According to one aspect of the present disclosure, it is possible to improve coverage in a random access procedure.
    Type: Application
    Filed: December 24, 2021
    Publication date: February 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Naoya Shibaike, Satoshi Nagata, Jing Wang, Qiping Pi, Lan Chen
  • Patent number: 12232136
    Abstract: A terminal includes a receiving section configured to receive downlink control information that schedules or triggers a specific signal, and a control section configured to use different quasi-co-location (QCL) parameters for the specific signal between a case where the specific signal is started within a first period for decoding the downlink control information and a case where the specific signal is started within a second period after the first period.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: February 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Patent number: 12226962
    Abstract: A method for manufacturing a fuel cell separator includes heating a sheet, pressing the sheet using a first die, thereby forming the sheet so as to have a predetermined thickness, cooling, together with the first die, the sheet that has been formed so as to have the predetermined thickness, and pressing the sheet that has undergone the cooling using a second die, thereby forming a gas passage in the sheet. In the sheet, a content of a thermoplastic resin is greater than or equal to 20 weight percent and less than or equal to 30 weight percent and a content of the carbon material particles is greater than or equal to 70 weight percent and less than or equal to 80 weight percent. The heating the sheet includes heating the sheet to a temperature that is higher than a melting point of the thermoplastic resin.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: February 18, 2025
    Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, TAKAGI CHEMICALS, INC.
    Inventors: Tatsuya Nagata, Kazuyuki Hirata, Yuki Wakimoto, Noriaki Takagi, Masakuni Takagi, Yuusuke Nagatani, Daisuke Watanabe, Kazuo Matsuyama
  • Patent number: 12230478
    Abstract: A charged particle emission device includes a pre-emission state detector configured to detect a pre-emission charged state which is a charged state of the charged object before charged particles are emitted, an emission time generator configured to generate an emission time based on a past emission time of charged particles and a charged state of the charged object after the emission, emission processor circuitry configured to emit charged particles to the charged object which is in the pre-emission charged state based on the generated emission time, a post-emission state detector configured to detect a post-emission charged state which is a charged state of the charged object after the charged particles are emitted, machine learning processor circuitry configured to cause a machine learning model to learn a correspondence among the pre-emission charged state, the post-emission charged state, and the emission time generated by the emission time generator.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: February 18, 2025
    Assignees: SHISHIDO ELECTROSTATIC, LTD., NATIONAL UNIVERSITY CORPORATION, IWATE UNIVERSITY
    Inventors: Katsuyuki Takahashi, Chyon Hae Kim, Koichi Takaki, Katsuya Kubo, Yuki Kaneta, Shinichi Yamaguchi, Isao Hiyoshi, Ryuichi Takeuchi, Hidemi Nagata
  • Patent number: 12231203
    Abstract: A terminal according to an aspect of the present disclosure includes a control section that determines activation or deactivation for a panel, and a transmitting section that transmits a report related to determined activation or deactivation for the panel by including the report in at least one of channel state information and MAC control information (MAC CE).
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • Publication number: 20250055622
    Abstract: A terminal is disclosed and includes a processor that generates at least one channel state information (CSI) report including a plurality of CSI sub-reports, and a transmitter that transmits the at least one CSI report. The processor determines allocations of the plurality of the CSI sub-reports in the CSI report according to IDs of the plurality of the CSI sub-reports. In other aspects, a radio communication method and a system are also disclosed.
    Type: Application
    Filed: October 21, 2024
    Publication date: February 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Wenjia Liu, Jing Wang, Xiaolin Hou
  • Publication number: 20250056430
    Abstract: A wireless relay device includes: a communication unit configured to relay a downlink wireless signal or an uplink wireless signal; a transmission unit configured to transmit information indicating a capability related to a relay of the downlink wireless signal or the uplink wireless signal; a reception unit configured to receive information indicating an amplification value or transmission power after the relay in accordance with the capability related to the relay; and a control unit configured to perform a control of amplifying the downlink wireless signal or the uplink wireless signal to be relayed, based on the information indicating the amplification value or the transmission power after the relay.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20250055543
    Abstract: A terminal is disclosed including a processor that generates at least one of channel state information (CSI) report including a plurality of CSI sub-reports; and a transmitter that transmits the at least one of the CSI report, wherein the processor determines allocations of the plurality of the CSI sub-reports in the CSI report according to IDs of the plurality of the CSI sub-reports, wherein a priority of the CSI sub-report is determined according to the IDs of the plurality of the CSI sub-reports. In other aspects, a radio communication method and a system are also disclosed.
    Type: Application
    Filed: October 30, 2024
    Publication date: February 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Wenjia Liu, Jing Wang, Xiaolin Hou
  • Publication number: 20250057041
    Abstract: A compound represented by a formula (1). In the formula (1): X1 to X4 are each independently a nitrogen atom or CRx; at least one of X1 to X4 is a nitrogen atom; a ring A, a ring B, and a ring C are each independently an aromatic hydrocarbon ring or a heterocycle; Ar1 is a hydrogen atom, an aryl group, or a group represented by a formula (2); and Ar2 is an aryl group or a group represented by a formula (3).
    Type: Application
    Filed: July 16, 2024
    Publication date: February 13, 2025
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Ryo NAGATA, Shintaro BAN, Yuki NAKANO, Ryota TAKAHASHI, Kiyoshi IKEDA, Tomokatsu KUSHIDA, Sigma HASHIMOTO, Yuichiro KAWAMURA
  • Patent number: 12225471
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that determines a reference signal for pathloss reference for a physical uplink shared channel (PUSCH), based on any one of reception of a medium access control control element (MAC CE) and transmission of a random access channel; and a transmitting section that transmits the PUSCH by using transmission power based on the reference signal for pathloss reference. According to one aspect of the present disclosure, a parameter for transmission power control can be appropriately determined.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: February 11, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Publication number: 20250048125
    Abstract: A wireless relay device includes: a reception unit configured to receive information indicating an activation or deactivation of a communication using relaying by a plurality of wireless relay devices from a base station, another wireless relay device, or a terminal; and a control unit configured to activate or deactivate a relaying function of the wireless relay device itself, based on the information indicating the activation or deactivation. The information indicating the activation or deactivation includes a number of hops in the communication.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Daisuke Kurita, Shohei Yoshioka, Haruhi Echigo, Satoshi Nagata
  • Publication number: 20250047365
    Abstract: A wireless relay device includes: a communication unit configured to relay a downlink wireless signal and an uplink wireless signal: a reception unit configured to receive a signal including control information and identification information for identifying a transmission destination of a signal including the control information in downlink; and a control unit configured to decode the signal including the control information, based on the identification information and perform a control based on the control information.
    Type: Application
    Filed: December 10, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Shohei Yoshioka, Daisuke Kurita, Shinya Kumagai, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20250048126
    Abstract: A communication device includes: a communication unit configured to transmit or receive a downlink signal or an uplink signal; and a control unit configured to determine a default beam in a wireless communication. In a case where a beam to be applied to the downlink signal or the uplink signal is changed from the default beam, the control unit changes the beam to be applied to the downlink signal or the uplink signal back to the determined default beam.
    Type: Application
    Filed: December 10, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC
    Inventors: Haruhi Echigo, Shohei Yoshioka, Daisuke Kurita, Shinya Kumagai, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20250048121
    Abstract: A wireless relay device includes: a communication unit configured to relay a downlink wireless signal or an uplink wireless signal; a reception unit configured to receive control information indicating a beam to be applied for each of resources via a downlink; and a control unit configured to determine a beam to be applied to the downlink wireless signal or the uplink wireless signal to be relayed, based on the control information.
    Type: Application
    Filed: December 10, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20250048123
    Abstract: A terminal includes: a reception unit configured to receive a first signal to which a beam from a first wireless relay device is applied and a second signal to which a beam from a second wireless relay device is applied, the beam from the second wireless relay device being different from that for the first signal; and a control unit configured to determine whether or not to simultaneously receive the first signal and the second signal based on a condition.
    Type: Application
    Filed: December 20, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Daisuke Kurita, Shohei Yoshioka, Haruhi Echigo, Satoshi Nagata
  • Publication number: 20250048122
    Abstract: A base station includes: a transmission unit configured to transmit signals that are associated with indexes and that include a synchronization signal and broadcast information to a plurality of wireless relay devices; and a control unit configured to control an operation related to transmission of the signals that are associated with the indexes. The control unit configures the signals that are associated with the indexes based on a number of the plurality of wireless relay devices.
    Type: Application
    Filed: December 20, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Daisuke Kurita, Shohei Yoshioka, Haruhi Echigo, Satoshi Nagata
  • Publication number: 20250048356
    Abstract: A terminal includes: a transmission unit that transmits feedback of an automatic repeat request; and a control unit assuming that when a bit string of the feedback and a resource of an uplink control channel are associated with each other and only a negative acknowledgment is fed back, an index of the resource indicates a correspondence relationship between a bit string of the feedback and the resource, in which an upper limit on the number of multiplexed bits of the feedback is configured by an upper layer parameter.
    Type: Application
    Filed: December 10, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei YOSHIOKA, Yuki MATSUMURA, Satoshi NAGATA
  • Publication number: 20250048124
    Abstract: A wireless relay device includes: a reception unit configured to receive resources of a periodic signal and information related to a beam for each of the resources from a base station or a first wireless relay device; and a transmission unit configured to transmit the periodic signal to which a beam based on the information is applied to a second wireless relay device or a terminal. The transmission unit does not transmit the information related to a beam for each of the resources to the second wireless relay device that is not directly connected to the terminal.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Daisuke Kurita, Shohei Yoshioka, Haruhi Echigo, Satoshi Nagata
  • Patent number: 12219369
    Abstract: A terminal includes a control section that determines, when a spatial relation for specific UL transmission is not configured, one specific spatial relation between a quasi-co-location (QCL) parameter related to a latest slot for a start symbol for the specific UL transmission or a first or last symbol for DL transmission corresponding to the specific UL transmission and a transmission configuration indication (TCI) state or a reference signal for path loss reference in a case where only one transmission configuration indication (TCI) state is activated for the specific DL transmission, and a transmitting section that performs the specific UL transmission in accordance with the specific spatial relation.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: February 4, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Publication number: 20250039874
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a downlink control channel, and a control section that judges, based on the presence or absence of configuration or support of scheduling of a plurality of downlink shared channels in a plurality of transmission/reception points using downlink control information provided by the downlink control channel, at least one of a transmission configuration indication (TCI state) indicated by the downlink control information and a TCI state corresponding to a downlink shared channel scheduled by the downlink control information.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 30, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Nagoya Shibaike, Satoshi Nagata, Weiqi Sun, Jing Wang, Qiping Pi, Lan Chen