Patents by Inventor Hiroki Harada

Hiroki Harada 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: 12294553
    Abstract: In a case of using a different frequency band that is different from a frequency band including one or a plurality of frequency ranges, a terminal applies initial access configurations including a format of an initial access signal, the format being different from that for the frequency band. The terminal transmits the initial access signal via an initial access channel set based on the applied initial access configurations.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: May 6, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Tomoya Ohara, Satoshi Nagata
  • Publication number: 20250133542
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section configured to determine a resource in which an uplink (UL) signal resource and a downlink (DL) signal resource are configurable in the same time resource in one physical resource block; and a transmitting/receiving section configured to perform, in the resource to be determined, at least one of reception of a specific DL signal used for initial access and transmission of a specific UL signal used for initial access. According to one aspect of the present disclosure, overhead can be reduced and resource utilization efficiency can be increased.
    Type: Application
    Filed: October 29, 2021
    Publication date: April 24, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Mayuko Okano, Satoshi Nagata, Masaya Okamura, Tomoya Ohara
  • Publication number: 20250119902
    Abstract: A terminal includes: a control unit configured to determine whether a field included in control information for performing multi-carrier scheduling is configured for each of carriers to be scheduled or is configured in common for the carriers to be scheduled, based on a condition; and a reception unit configured to receive the control information from a base station. The reception unit receives each of the carriers to be scheduled by the control information, based on the determination.
    Type: Application
    Filed: January 28, 2022
    Publication date: April 10, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Mayuko Okano, Masaya Okamura
  • Patent number: 12273922
    Abstract: To actualize proper UL communication in a communication system using a cell where application of listening is defined, a user terminal has a reception section that receives a DL signal including a UL transmission indication, and a control section that controls transmission of UL data based on the UL transmission indication and a channel access procedure before UL transmission, where the control section controls so as to perform a channel access procedure with random back-off.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 8, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang, Liu Liu, Huiling Jiang
  • 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: 20250113379
    Abstract: A terminal includes: a reception unit configured to receive information related to a channel access procedure from a base station; a control unit configured to determine the channel access procedure, based on the information; and a communication unit configured to perform transmission to the base station, based on the determined channel access procedure, wherein the control unit supports a channel access procedure with LBT (Listen before talk), and does not assume that the LBT is to be configured in a licensed band.
    Type: Application
    Filed: December 27, 2022
    Publication date: April 3, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Naoya Shibaike, Hiroki Harada, Satoshi Nagata, Qiping Pi
  • Publication number: 20250106665
    Abstract: A wireless relay device includes: a relay unit configured to relay a first wireless signal from a base station to a terminal; and a control unit configured to control relaying of the first wireless signal from the base station to the terminal. The control unit performs measurement of the first wireless signal and determines power amplification and a spatial domain filter to be applied to the relaying of the first wireless signal from the base station to the terminal based on a result of the measurement.
    Type: Application
    Filed: January 28, 2022
    Publication date: March 27, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Kousuke Shima, Masaya Okamura, Tomoya Ohara, Jing Wang, Weiqi Sun
  • Publication number: 20250105964
    Abstract: A terminal includes: a reception unit configured to receive, in downlink, a reference signal for positioning without using a measurement gap during a reference signal processing period; and a control unit configured to assume that the reference signal is to be transmitted by using a duplex method during the reference signal processing period.
    Type: Application
    Filed: February 4, 2022
    Publication date: March 27, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Kousuke Shima, Hiroki Harada, Daisuke Kurita, Mayuki Okano, Masaya Okamura, Tomoya Ohara
  • Patent number: 12261688
    Abstract: A terminal receives a radio frame having a second slot pattern to be used in a case in which a modulation system (FTN) different from a modulation system in a case of using a first slot pattern is applied. The terminal applies for the second slot pattern a configuration of an uplink and a downlink according to a time division duplex in the radio frame by using a reference subcarrier spacing same as that for the first slot pattern.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: March 25, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • Publication number: 20250097917
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives first configuration information related to use of a frequency to which shared spectrum channel access is applied, and second configuration information for configuring a resource in which frequency division multiplexing of a downlink (DL) resource and an uplink (UL) resource is available, and a control section that controls, based on the first configuration information and the second configuration information, use of the resource in which the frequency division multiplexing is available in the frequency applied with the shared spectrum channel access. According to one aspect of the present disclosure, it is possible to enhance efficiency of resource use.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Kurita, Mayuko Okano, Kousuke Shima, Masaya Okamura, Tomoya Ohara
  • Publication number: 20250097981
    Abstract: A terminal according to one aspect of the present disclosure includes: a transmitting section that transmits a message in a random access procedure in a physical uplink shared channel; and a control section that controls a plurality of repetitions of at least one of reception of a downlink channel for scheduling the physical uplink shared channel and transmission of a channel the physical uplink shared channel. According to one aspect of the present disclosure, coverage can be improved by taking account of overhead.
    Type: Application
    Filed: July 30, 2021
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Haruhi Echigo, Hiroki Harada, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20250097909
    Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives configuration information including one or more of time resource configurations and/or frequency resource configurations; and a control section that determines, based on the configuration information and an ID related to a Public Land Mobile Network (PLMN), at least one of a time resource and a frequency resource to be used for at least one of a downlink signal and an uplink signal. An aspect of the present disclosure allows operation of communication to be flexibly performed between operators.
    Type: Application
    Filed: January 17, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Mayuko Okano, Hiroki Harada, Satoshi Nagata
  • Patent number: 12255839
    Abstract: A user terminal has a control section that makes a determination of at least one of a band of monitoring for at least one of a reference signal and a downlink control channel, and operation of the monitoring, in a frequency band to which sensing of a channel is applied, based on at least one of notified configuration information and reported capability information, and a receiving section that performs the monitoring according to the determination. According to one aspect of the present disclosure, it is possible to perform proper communication in an unlicensed band.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Murayama
  • Patent number: 12256438
    Abstract: A terminal includes a receiver that receives an index specifying configuration information for transmitting a random access preamble; and a controller that configures, in response to the receiver receiving additional information that specifies a time domain resource for transmitting the random access preamble, the time domain resource specified by the additional information, the time domain resource being configured by replacing a time domain resource for transmitting the random access preamble included in the configuration information specified by the index with the time domain resource specified by the additional information.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 18, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Akihito Hanaki, Hiroki Harada, Tomoya Ohara
  • Publication number: 20250088331
    Abstract: A terminal includes: a transmission unit configured to transmit, in uplink, a reference signal for positioning; and a control unit configured to assume that resources of the reference signal for positioning are to be non-contiguously allocated.
    Type: Application
    Filed: January 27, 2022
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Masaya Okamura, Tomoya Ohara, Kousuke Shima, Hiroki Harada, Daisuke Kurita, Mayuko Okano
  • Publication number: 20250089061
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a Medium Access Control control element (MAC Control Element (CE)) including a field indicating a time period from a given timing until activation of a transmission configuration indication state (TCI state), and a control section that controls the activation of the TCI state based on the MAC CE. According to one aspect of the present disclosure, it is possible to implement suitable maintenance of communication quality.
    Type: Application
    Filed: August 5, 2021
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Hiroki Harada, Yuki Matsumura, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20250089079
    Abstract: A terminal includes: a reception unit configured to receive control information using a downlink; a control unit configured to perform monitoring of the control information for each of a plurality of slots; and a transmission unit configured to transmit, using uplink, terminal capability information that indicates whether or not, to support scheduling of a plurality of downlink signals by a single control information, the terminal capability information being specified in accordance with a number of the plurality of slots.
    Type: Application
    Filed: January 11, 2022
    Publication date: March 13, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Mayuko Okano, Naoya Shibaike, Hiroki Harada
  • Patent number: 12250649
    Abstract: A terminal includes a reception unit that receives a synchronization signal block in an unlicensed band of a high frequency band higher than or equal to a frequency band of a frequency range 2 (FR2), the FR2 being in a range including a frequency range 1 (FR1) that is a low frequency band and the FR2 that is a high frequency band in a new radio (NR) system; and a control unit that identifies, based on the received synchronization signal block, an index of a candidate position for a transmission corresponding to the received synchronization signal block, from among candidate positions for transmitting a synchronization signal block, the number of the candidate positions being greater than a predetermined number.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: March 11, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Jing Wang
  • Publication number: 20250081013
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that computes one or more radio link qualities corresponding to one or more reference signals; and a control section that performs control, based on the one or more radio link qualities, to include information related to a radio link quality corresponding to which one of the one or more reference signals, in a channel state information (CSI) report. According to one aspect of the present disclosure, preferable channel estimation/resource use is enabled.
    Type: Application
    Filed: August 5, 2021
    Publication date: March 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Hiroki Harada, Yuki Matsumura, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20250081201
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives at least one of configuration information of a pattern of resources unavailable for a DL in certain time resources and indication information related to the pattern of the resources, and a control section that performs control to perform DL reception in resources other than the resources unavailable for the DL, and performs control not to perform the DL reception in the resources unavailable for the DL, based on at least one of the configuration information and the indication information. According to one aspect of the present disclosure, use efficiency of resources can be enhanced.
    Type: Application
    Filed: July 20, 2021
    Publication date: March 6, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shohei Yoshioka, Shinya Kumagai, Satoshi Nagata, Jing Wang, Qiping Pi