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: 20240129961
    Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device, and the transmission unit transmits information related to control of the second communication device to the first communication device in a case where the connection to the first communication device is established.
    Type: Application
    Filed: February 22, 2021
    Publication date: April 18, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Shohei Yoshioka, Haruhi Echigo, Yuki Hokazono, Yuki Takahashi, Daisuke Kurita, Satoshi Nagata
  • Publication number: 20240129777
    Abstract: A communication apparatus includes a receiving unit configured to receive, from another communication apparatus, a signal requesting a CSI (Channel State Information) report and a CSI reference signal, in a resource autonomously selected by the another communication apparatus; a control unit configured to perform measurement by using the CSI reference signal; and a transmitting unit configured to transmit, to the another communication apparatus, a CSI report based on a result of the measurement.
    Type: Application
    Filed: March 5, 2021
    Publication date: April 18, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
  • Publication number: 20240129838
    Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive a connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device.
    Type: Application
    Filed: February 22, 2021
    Publication date: April 18, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Shohei Yoshioka, Haruhi Echigo, Yuki Hokazono, Yuki Takahashi, Daisuke Kurita, Satoshi Nagata
  • Publication number: 20240121818
    Abstract: A communication device includes: a control unit configured to autonomously determine a resource to be used for transmission; a reception unit configured to execute an LBT (Listen before talk) before transmitting a signal by using the resource; and a transmission unit configured to transmit the signal to another communication device by using the resource in a case where the reception unit succeeds in the LBT, wherein the transmission unit determines transmission beamforming to be applied upon transmitting the signal, based on reception beamforming applied to the LBT by the reception unit.
    Type: Application
    Filed: March 4, 2021
    Publication date: April 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Mayuko Okano, Yuki Takahashi, Masaya Okamura, Shohei Yoshioka, Satoshi Nagata
  • Publication number: 20240121833
    Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive a connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device and performs a communication with the second communication device, and the second communication device performs a communication with a third communication device that includes: a transmission unit that transmits a connection request to the first communication device; a reception unit that receives a connection permission from the first communication device; and a control unit that establishes a first connection with the first communication device.
    Type: Application
    Filed: February 22, 2021
    Publication date: April 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Haruhi Echigo, Yuki Hokazono, Satoshi Nagata
  • Publication number: 20240121815
    Abstract: A communication device includes: a control unit configured to determine a priority to apply to a data signal; and a transmitting unit configured to transmit information that indicates the determined priority, and the data signal to which the determined priority is applied, in autonomously selected resources, to another communication device.
    Type: Application
    Filed: March 12, 2021
    Publication date: April 11, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
  • Publication number: 20240113801
    Abstract: A communication device has: a receiving unit configured to receive information from another communication device; a control unit configured to determine an MCS (Modulation and Coding Scheme) based on the information; and a transmitting unit configured to transmit a signal, to which the MCS is applied, in autonomously selected resources, to the another communication device.
    Type: Application
    Filed: March 12, 2021
    Publication date: April 4, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
  • Publication number: 20240103544
    Abstract: A conveyance system (1) according to the present disclosure includes: a conveyance vehicle (10) that conveys an object based on a first traveling path; a sensor (20) that transmits information regarding a position of the conveyance vehicle (10) via a network; a communication unit (32) that can communicate with the conveyance vehicle (10) and the sensor (20); and a control unit (31) that controls the conveyance vehicle (10) via the communication unit (32). The control unit (31) determines a second traveling path based on the information regarding the position of the conveyance vehicle (10) and corrects a traveling trajectory of the conveyance vehicle (10) based on the first traveling path and the second traveling path.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 28, 2024
    Applicant: NEC Corporation
    Inventors: Taichi Kumagai, Shinya Yasuda
  • Publication number: 20240098506
    Abstract: UE 200 receives gap information indicating a gap between channel occasions for an initial access applied when using a second frequency band different from a first frequency band allocated for mobile communication. The UE 200 executes an initial access on a network in the second frequency band based on the gap information.
    Type: Application
    Filed: October 15, 2019
    Publication date: March 21, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Shinya Kumagai
  • Publication number: 20240098799
    Abstract: A terminal includes a receiver configured to receive system information including information pertaining to random access procedures from the base station; a controller configured to select the resources to be used for random access based on the information pertaining to the random access procedure and a device type of the terminal acting as a reference terminal; and a transmitter configured to transmit a random access preamble to the base station using the selected resource, wherein the device type of the reference terminal is a reduced-function terminal type or an enhanced-coverage terminal type.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 21, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Haruhi Echigo, Daisuke Kurita, Satoshi Nagata
  • Publication number: 20240098787
    Abstract: A transmission node includes: a reception unit configured to execute an LBT (Listen before talk) in a time interval immediately before transmitting a signal; a transmission unit configured to transmit a signal in a case where reception power is less than a threshold value in the time interval; and a control unit configured to, in a case where multiple signals are to be transmitted, change control related to the LBT for a signal to be transmitted for a first time and change control related to the LBT for a signal to be transmitted other than for the first time.
    Type: Application
    Filed: February 22, 2021
    Publication date: March 21, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Masaya Okamura, Mayuko Okano, Yuki Takahashi, Shohei Yoshioka, Satoshi Nagata
  • Publication number: 20240073866
    Abstract: A communication apparatus includes a receiving unit configured to receive, from another communication apparatus, a plurality of requests to transmit a signal in a resource autonomously selected by the another communication apparatus; a control unit configured to control the transmitting of a plurality of the signals respectively corresponding to the plurality of the requests, based on a condition; and a transmitting unit configured to transmit, to the another communication apparatus, at least a predetermined number of signals among the plurality of signals.
    Type: Application
    Filed: March 22, 2021
    Publication date: February 29, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
  • Publication number: 20240057175
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives configuration information related to channel occupancy time (COT) in a semistatic channel access procedure and configuration information related to a physical random access channel (PRACH), via higher layer signaling, and a control section that controls initiation of the COT, based on the configuration information related to the COT, and controls PRACH transmission in a PRACH transmission opportunity in the COT, based on the configuration information related to the PRACH. According to one aspect of the present disclosure, radio communication in an NR-U system can be appropriately controlled.
    Type: Application
    Filed: January 24, 2022
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Satoshi Nagata
  • Publication number: 20240049191
    Abstract: A terminal comprises: a reception unit that receives a first control information by a first control channel on a first carrier and a second control information by a second control channel on a second carrier; and a control unit that controls a reception of the second control channel based on the first control information, and controls a communication of data based on the second control information.
    Type: Application
    Filed: December 25, 2020
    Publication date: February 8, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shohei Yoshioka, Masaya Okamura, Shinya Kumagai, Satoshi Nagata
  • Publication number: 20240040486
    Abstract: A terminal has: a transmitting unit configured to transmit, to a communication device, a requesting signal that requests transmission of a cell search signal; and a receiving unit configured to receive the cell search signal transmitted based on the requesting signal and identify information related to a cell.
    Type: Application
    Filed: March 24, 2021
    Publication date: February 1, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Mayuko Okano, Masaya Okamura, Yuki Takahashi, Shohei Yoshioka, Satoshi Nagata
  • Publication number: 20240040643
    Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device, and establishes a second connection between the second communication device and at least one of the device itself and the first communication device.
    Type: Application
    Filed: February 22, 2021
    Publication date: February 1, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Haruhi Echigo, Yuki Hokazono, Satoshi Nagata
  • Publication number: 20240032013
    Abstract: A terminal includes a reception unit configured to receive, from a base station, a configuration concerning semi persistent scheduling (SPS) and a physical downlink shared channel (PDSCH) according to the SPS; a control unit configured to determine hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information corresponding to the PDSCH according to the SPS, configure a HARQ-ACK codebook concerning the feedback information, and determine a bit with respect to the feedback information by applying the codebook; and a transmission unit configured to transmit the feedback information to the base station. The control unit is configured to configure the codebook based on the configuration concerning the SPS.
    Type: Application
    Filed: January 8, 2021
    Publication date: January 25, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
  • Publication number: 20240023081
    Abstract: A terminal includes: a reception unit configured to receive data according to SPS (Semi persistent scheduling) from a base station; a control unit configured to determine HARQ-ACK (Hybrid automatic repeat request Acknowledgement) feedback information corresponding to the data, wherein transmission of the HARQ-ACK feedback information is required to be postponed until a valid uplink resource is found, configure a HARQ-ACK codebook related to the feedback information, and determine bits of the feedback information by applying the codebook; and a transmission unit configured to transmit the feedback information to the base station. The control unit configures the codebook based on priorities configured to the bits.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 18, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
  • Patent number: 11855820
    Abstract: A terminal includes a reception unit configured to receive information for allocating uplink transmission from a base station; a control unit configured to determine a CP extension value in a case where a parameter for calculating the CP extension value is not configured by the base station upon receiving the information; and a transmission unit configured to execute the uplink transmission by applying the determined CP extension value.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: December 26, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Hiroki Harada, Satoshi Nagata
  • Publication number: 20230397243
    Abstract: A terminal comprising: a communication unit that performs a transmission of an uplink signal using two or more uplink channels with different priorities; and a control unit that performs a multiplexing control on a multiplexing of two or more uplink channels when a multiplexing timeline condition on the multiplexing of two or more uplink channels is satisfied, and performs a prioritization control on a prioritization of two or more uplink channels when a prioritization timeline condition on the prioritization of two or more uplink channels is satisfied; wherein the control unit determines whether or not the prioritization timeline condition is satisfied, after determining whether or not the multiplexing timeline condition is satisfied.
    Type: Application
    Filed: October 9, 2020
    Publication date: December 7, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Shinya Kumagai, Satoshi Nagata