Patents by Inventor Shinya Kumagai

Shinya Kumagai 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: 20240267902
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a Radio Resource Control (RRC) information element related to a bandwidth part (BWP) configuration in a duplex method of performing frequency division multiplexing on an uplink (UL) resource and a downlink (DL) resource in one component carrier in a time division duplex (TDD) band; and a control section that controls at least one of configuration, application, activation, and switching of a UL BWP, based on the RRC information element. According to one aspect of the present disclosure, it is possible to increase resource usage efficiency.
    Type: Application
    Filed: June 3, 2021
    Publication date: August 8, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shinya Kumagai, Satoshi Nagata, Jing Wang
  • Publication number: 20240267927
    Abstract: A terminal includes: a reception unit configured to receive control information and data from a base station; a control unit configured to determine a carrier for transmitting an uplink control channel, based on the control information; and a transmission unit configured to transmit information related to retransmission control of the data in the determined carrier. The control unit configures an activation timing and a deactivation timing of the determined carrier.
    Type: Application
    Filed: July 2, 2021
    Publication date: August 8, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20240241523
    Abstract: An information processing apparatus according to the present disclosure includes, a communication unit configured to receive observation data from at least one sensor, the observation data being obtained by observing an obstacle in a plurality of areas, a determination unit configured to determine presence/absence of an obstacle in the plurality of areas by using the observation data, and a specifying unit configured to specify, when the presence/absence of an obstacle in a first area included in the plurality of areas is unknown, a probability of presence of an obstacle in the first area by using a determination result indicating presence/absence of an obstacle in an area near the first area, in which the probability changes depending on presence/absence of an obstacle in the area near the first area.
    Type: Application
    Filed: January 19, 2022
    Publication date: July 18, 2024
    Applicant: NEC CORPORATION
    Inventors: Shinya YASUDA, Hiroshi Yoshida, Taichi Kumagai, Masayuki Murata, Yuichi Ohsita
  • Publication number: 20240243803
    Abstract: The radio relay device receives control information from a radio base station. The radio relay device controls based on the control information, the relay state of at least a beam in relaying radio waves from a radio base station or a terminal without signal interpretation.
    Type: Application
    Filed: May 10, 2021
    Publication date: July 18, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20240235738
    Abstract: A communication device includes: a control unit configured to autonomously determine a first resource to be used for transmission; a transmission unit configured to transmit data to another communication device by using the first resource; and a reception unit configured to receive feedback information corresponding to the data by using a second resource that is autonomously or heteronomously determined by the another communication device.
    Type: Application
    Filed: March 2, 2021
    Publication date: July 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
  • Publication number: 20240235765
    Abstract: A communication device includes: a control unit configured to determine an antenna port to apply to a data signal; and a transmitting unit configured to transmit, to another communication device, information that indicates the determined antenna port, and the data signal that is transmitted, in autonomously selected resources, by using the determined antenna port.
    Type: Application
    Filed: March 12, 2021
    Publication date: July 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
  • Publication number: 20240236965
    Abstract: A communication device has: a control unit configured to autonomously select resources for use for transmission; and a transmitting unit configured to transmit a data signal in the selected resources, and information that indicates the selected resources, to another communication device.
    Type: Application
    Filed: March 12, 2021
    Publication date: July 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
  • Publication number: 20240235741
    Abstract: A communication device includes: a reception unit configured to receive a plurality of data items in a resource autonomously selected by another communication device; a control unit configured to multiplex feedback information corresponding to each of the plurality of data items; and a transmission unit configured to transmit the multiplexed feedback information to the another communication device. The control unit determines which feedback information corresponding to each of the plurality of data items is to be multiplexed and multiplexes the feedback information corresponding to each of the plurality of data items, or the control unit multiplexes the feedback information corresponding to each of the plurality of data items, based on information related to multiplexing of the feedback information corresponding to each of the plurality of data items received by the reception unit from the another communication device.
    Type: Application
    Filed: March 2, 2021
    Publication date: July 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
  • Publication number: 20240223243
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a signal any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; and a control section that reports a measurement result of the signal and controls reception of a downlink channel or transmission of an uplink channel by using a beam and a sequence based on the report. According to one aspect of the present disclosure, the number of users to be multiplexed can be improved.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 4, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Shinya Kumagai, Hiroki Harada, Satoshi Nagata, Tomoya Ohara, Takuma Nakamura
  • Publication number: 20240214135
    Abstract: The terminal includes a communication unit that executes data communication via a plurality of component carriers, and the receiving unit executes predetermined communication that is communication of a transport block across the plurality of component carriers.
    Type: Application
    Filed: March 24, 2020
    Publication date: June 27, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Hiroki Harada, Shinya Kumagai, Satoshi Nagata
  • Publication number: 20240187179
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives information related to a time window over a plurality of slots; and a control section that controls transmission of a plurality of demodulation reference signals in the plurality of slots. Amplitudes and phases of the plurality of demodulation reference signals have continuity. The time window includes a first time resource being not for uplink. According to one aspect of the present disclosure, channel estimation accuracy can be improved.
    Type: Application
    Filed: March 31, 2021
    Publication date: June 6, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Shinya Kumagai, Hiroki Harada, Satoshi Nagata, Tomoya Ohara, Takuma Nakamura
  • Publication number: 20240179770
    Abstract: A radio communication node includes a connection unit capable of connecting with multiple radio communication nodes having a same or different function or role, and controls connection performed by the connection unit.
    Type: Application
    Filed: March 22, 2021
    Publication date: May 30, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Haruhi Echigo, Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Yuki Hokazono, Satoshi Nagata
  • Publication number: 20240179712
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a signal for judgment of a plurality of terminals sharing uplink data; and a control section that controls one of reception of the uplink data from another terminal of the plurality of terminals and transmission of the uplink data to the other terminal, based on the signal. According to one aspect of the present disclosure, coverage can be improved.
    Type: Application
    Filed: March 31, 2021
    Publication date: May 30, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Shinya Kumagai, Hiroki Harada, Satoshi Nagata, Tomoya Ohara, Takuma Nakamura
  • Publication number: 20240171257
    Abstract: The radio relay device controls a relay state when a radio wave from a radio base station or a terminal is relayed without signal interpretation. The radio relay device transmits or receives a signal related to detection or identification to/from the radio base station or the terminal.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 23, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Haruhi Echigo, Shinya Kumagai, Yuki Takahashi, Daisuke Kurita, Yuki Hokazono, Satoshi Nagata
  • Publication number: 20240172252
    Abstract: A terminal includes a communication unit configured to perform transmission of a signal to and reception of a signal from a base station; and a control unit configured to transmit, to another terminal, information that is received from the base station based on the transmission and the reception, or information that is obtained from the signal transmitted to or received from the base station.
    Type: Application
    Filed: March 31, 2021
    Publication date: May 23, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Takuma Nakamura, Tomoya Ohara, Shinya Kumagai, Daisuke Kurita
  • Publication number: 20240172211
    Abstract: A communication apparatus including: a reception unit configured to detect a preamble transmitted from a transmission node; and a control unit configured to determine a demodulation operation for a received signal according to whether information related to a destination is included in the preamble.
    Type: Application
    Filed: March 24, 2021
    Publication date: May 23, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Mayuko Okano, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Yuki Takahashi, Yuki Matsumura
  • Publication number: 20240172279
    Abstract: A transmission node includes: a reception unit configured to receive a notification of a resource to be used for transmission; a control unit configured to execute an LBT (Listen before talk) to obtain a resource that is selected autonomously; and a transmission unit configured to transmit a desired signal with at least one of the resource of the notification and the resource obtained by the LBT.
    Type: Application
    Filed: April 14, 2021
    Publication date: May 23, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Masaya Okamura, Shinya Kumagai, Shohei Yoshioka, Yuki Takahashi, Mayuko Okano
  • Publication number: 20240163071
    Abstract: A terminal includes a communication unit configured to perform communication based on half-duplex frequency division duplex; and a control unit configured to perform a first process and a second process, the first process being performed to determine a signal to receive or a signal to transmit when a downlink signal and an uplink signal overlap in a time domain during the communication, and the second process being performed to determine the signal to transmit when a plurality of uplink signals overlap in the time domain during the communication. In this terminal, the control unit determines whether to perform the first process or the second process first, and the communication unit receives or transmits a signal that is obtained based on a result of performing at least one of the first process and the second process.
    Type: Application
    Filed: March 23, 2022
    Publication date: May 16, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Satoshi Nagata
  • Publication number: 20240154774
    Abstract: A terminal comprises a control unit that applies a target subcarrier spacing lower than a specific subcarrier spacing in a target frequency band, the target frequency band includes at least a prat of a specific frequency range defined with the specific subcarrier spacing as a minimum subcarrier spacing or a frequency band lower than the specific frequency range, wherein the control unit applies a method different from an initial access method related to the specific subcarrier spacing, for at least a part of an initial access method related to the target subcarrier spacing.
    Type: Application
    Filed: March 4, 2021
    Publication date: May 9, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shinya Kumagai, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20240155578
    Abstract: A terminal comprises: a control unit that performs, when a base station configures a broader carrier bandwidth wider than a maximum carrier bandwidth supported by the terminal, a communication capable of using a second number of frequency resource larger than a first number of frequency resource, the first number of frequency resource is available by the base station on an assumption that the terminal uses the broader carrier bandwidth.
    Type: Application
    Filed: March 4, 2021
    Publication date: May 9, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shinya Kumagai, Naoya Shibaike, Satoshi Nagata