Patents by Inventor Satoshi Nagata

Satoshi 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: 20240064527
    Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines a spatial relation for a physical uplink control channel on the basis of a control resource set having a lowest identifier, and a transmitting section that simultaneously transmits the physical uplink control channel on the basis of the spatial relation by using a plurality of coherent panels. According to one aspect of the present disclosure, it is possible to appropriately perform simultaneous UL transmission using multiple panels.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20240064732
    Abstract: A terminal according to an aspect of the present disclosure includes: a transmitting section that transmits a sounding reference signal; a receiving section that receives information related to schedule; and a control section that performs control to perform UL transmission in cooperation with another terminal, based on the information related to the schedule. An antenna port to be used for transmission of the sounding reference signal and an antenna port to be used for transmission of the UL transmission are associated with each other.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Naoya Shibaike, Haruhi Echigo
  • Publication number: 20240063883
    Abstract: The present disclosure provides a terminal and a base station. The terminal includes: a receiving unit configured to receive first information transmitted via a plurality of first beams; and a transmitting unit configured to transmit measurement results of the first information transmitted via at least a part of the first beams. The receiving unit is further configured to receive second information transmitted via a preferred beam of a plurality of second beams. The preferred beam is determined by a base station from the plurality of second beams according to measurement results of the first information transmitted via more than two first beams.
    Type: Application
    Filed: December 28, 2020
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Xufei Zheng, Liu Liu, Hiroyuki Kawai, Lan Chen, Jing Wang, Hiroki Harada, Satoshi Nagata
  • Publication number: 20240064768
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives information indicating a plurality of transmission configuration indication (TCI) states, and receives downlink control information indicating one or more TCI states of the plurality of TCI states and not indicating scheduling of any of a physical downlink shared channel and a physical uplink shared channel, and a control section that applies the one or more TCI states to a plurality of kinds of signals. According to an aspect of the present disclosure, the TCI state indication can be appropriately performed.
    Type: Application
    Filed: January 15, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang
  • Patent number: 11909696
    Abstract: A terminal is disclosed including a transmitter that performs an uplink (UL) transmission; and a receiver that performs a downlink (DL) reception, wherein the transmitter does not perform the UL transmission in a period after a last symbol of the DL reception. In other aspects, a radio communication method, a base station, and a system are also disclosed.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: February 20, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Shaozhen Guo, Xiaolin Hou
  • Patent number: 11909465
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives one piece of downlink control information (DCI) for scheduling a plurality of downlink shared channels (PDSCHs), and a control section that determines either a single TCI state or a plurality of TCI states for the plurality of PDSCHs in at least one of a first case and a second case, the first case being a case that a time offset from the DCI to the plurality of PDSCHs is shorter than a threshold, the second case being a case that a transmission configuration indication (TCI) field is not configured. According to an aspect of the present disclosure, QCL parameters for multi-panel/TRP can be appropriately determined.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: February 20, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • Publication number: 20240056131
    Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives information related to schedule; a transmitting section that transmits, to another terminal, information related to part of UL data, the part of the UL data being obtained by dividing the UL data in at least one of a unit of transport block, a unit of codeword, a unit of code block, and a unit of bit; and a control section that performs control to transmit the UL data in cooperation with the another terminal, based on the information related to the schedule.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Naoya Shibaike, Haruhi Echigo
  • Publication number: 20240057088
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a configuration of a physical uplink control channel (PUCCH) resource for transmission of hybrid automatic repeat reQuest acknowledgement (HARQ-ACK) information for a multicast physical downlink shared channel (PDSCH); and a control section that controls transmission of the HARQ-ACK information using the PUCCH resource. According to one aspect of the present disclosure, it is possible to appropriately receive multicast downlink data.
    Type: Application
    Filed: December 18, 2020
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Shohei Yoshioka, Satoshi Nagata
  • Publication number: 20240057133
    Abstract: A terminal includes: a reception unit configured to receive a sidelink signal from a terminal that autonomously selects a resource; and a transmission unit configured to transmit information based on the sidelink signal to a base station.
    Type: Application
    Filed: January 13, 2021
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Nagata
  • Publication number: 20240057061
    Abstract: A terminal includes: a control unit configured to select a resource used for sidelink transmission; a transmission unit configured to report information indicating the selected resource to a base station; and a reception unit configured to receive, from the base station, information indicating approval or disapproval for using the selected resource. The transmission unit performs transmission to another terminal using the selected resource in a case where the reception unit receives approval for using the selected resource.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, 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
  • Patent number: 11902958
    Abstract: A terminal is disclosed communicating using a first carrier performing at least Downlink (DL) transmission and a second carrier performing only Uplink (UL) transmission. The terminal includes a receiver that receives an indication regarding a UL, the indication included in downlink control information (DCI) that is reported from the first carrier and a processor that transmits a UL signal using the UL based on the indication. In other aspects, a radio communication method, a base station, and a system are also disclosed.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: February 13, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata
  • Patent number: 11902069
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that assumes that a frequency domain orthogonal cover code (FD-OCC) having a sequence length of a number larger than two is applied to a demodulation reference signal mapped to a pair of resource elements the number of which is greater than two and that are being different in frequency; and a transmitting/receiving section that performs transmission processing or reception processing of the demodulation reference signal, based on the FD-OCC. According to one aspect of the present disclosure, even when there are terminals according to different releases, each of the terminals can appropriately perform communication.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: February 13, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Yuichi Kakishima, Satoshi Nagata
  • Patent number: 11902932
    Abstract: A user equipment includes a receiving unit configured to receive a physical control channel and a physical shared channel from another user equipment; a control unit configured to calculate a distance that is an estimated distance between the another user equipment and the user equipment, based on information acquired via the physical control channel; and a transmitting unit configured to determine whether to transmit, via a channel used for transmitting and receiving a response relating to retransmission control, the response relating to the retransmission control of the physical shared channel transmitted from the another user equipment, based on the calculated distance.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: February 13, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Nagata, Huan Wang, Xiaolin Hou
  • Patent number: 11903055
    Abstract: The user equipment comprises a reception unit configured to receive allocation information of reference signals from a base station apparatus or a first user equipment, the reference signals being used in a device-to-device direct communication; a control unit for determining a device-to-device direct communication signal based on the allocation information of reference signals used in the device-to-device direct communication; and a transmitter configured to transmit the determined device-to-device direct communication signal to a second user equipment, wherein the allocation information of reference signals used in the device-to-device direct communication includes a transmission density of the reference signals used in the device-to-device direct communication.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: February 13, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Ryosuke Osawa, Yuichi Kakishima, 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: 20240048289
    Abstract: A terminal according to an aspect of the present disclosure includes: a control section that determines a size of a semi-static hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook including HARQ-ACK corresponding to a downlink shared channel (physical downlink shared channel (PDSCH)) of semi-persistent scheduling (SPS) based on the number of configured SPS configurations, the number of configured or activated cells, and the number of HARQ-ACK timing values included in a set of the configured HARQ-ACK timing values; and a transmitting section that transmits an HARQ-ACK information bit corresponding to the HARQ-ACK codebook by using a resource of an uplink control channel. According to one aspect of the present disclosure, the HARQ-ACK can be appropriately feed back even in a case where multiple SPSs are used.
    Type: Application
    Filed: October 3, 2019
    Publication date: February 8, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Satoshi Nagata, Xiaohong Zhang, Shaozhen Guo, Lihui Wang, Xiaolin Hou
  • Patent number: 11895656
    Abstract: The present invention is designed so that, even when a sequence-based uplink control channel is used, uplink control information is reported appropriately. A user terminal according to one aspect of the present invention has a control section that determines to use one or both of a short uplink control channel, which is transmitted in a short period, and a long uplink control channel, which is transmitted in a longer period than the short uplink control channel, based on certain information, and a transmission section that transmits the uplink control information using the determined uplink control channel.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: February 6, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
  • Patent number: 11895657
    Abstract: A user terminal according to the present invention includes: a transmitting section that transmits Uplink Control Information (UCI) including at least one of retransmission control information for a downlink data channel, a Scheduling Request (SR) and Channel State Information (CSI); and a control section that controls the transmission of the UCI when a first uplink control channel and a second uplink control channel having a longer duration than that of the first uplink control channel are subjected to time division multiplexing in one or more slots.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: February 6, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • Patent number: 11895622
    Abstract: A user apparatus in a mobile communication system includes an allocation means that divides a message that includes control information and data into a plurality of partial messages, and allocates resources included in one or more resource pools to the plurality of partial messages; and a transmission means that transmits the plurality of partial messages using the resources allocated by the allocation means.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: February 6, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Shimpei Yasukawa, Satoshi Nagata, Qun Zhao, Yongbo Zeng, Yongsheng Zhang