Patents by Inventor Yuki MATSUMURA

Yuki MATSUMURA 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).

  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230247563
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives information indicating mapping between an identifier of spatial relation information and a path loss reference signal by using higher layer signaling; and a control section that determines the path loss reference signal used for transmission power control, based on the indicated identifier of the spatial relation information and the mapping. According to one aspect of the present disclosure, parameters related to UL transmission power control can be appropriately determined.
    Type: Application
    Filed: July 30, 2020
    Publication date: August 3, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230247617
    Abstract: A terminal according to an aspect of the present disclosure includes a control section that determines spatial relation information for a plurality of uplink shared channels (Physical Uplink Shared Channels (PUSCHs)) by using a single downlink control information (DCI), and a transmitting section that transmits the plurality of PUSCHs by using a spatial domain transmission filter based on the spatial relation information. According to an aspect of the present disclosure, even when multi-TRP is used, UL transmission can be appropriately controlled.
    Type: Application
    Filed: July 31, 2020
    Publication date: August 3, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • TERMINAL, RADIO COMMUNICATION METHOD AND BASE STATION
    Publication number: 20230231606
    Abstract: In order to appropriately perform communication using information related to a channel state information reference signal reported from a terminal, a terminal according to one aspect of the present disclosure includes a control section that controls reporting of a plurality of pieces of first information related to a combination of a channel state information resource for a band combination and the number of ports for the band combination and second information related to the number of ports per channel state information resource for the band combination, and a transmitting section that transmits the first information and the second information.
    Type: Application
    Filed: April 19, 2021
    Publication date: July 20, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Nadisanka Rupasinghe
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230224895
    Abstract: A terminal according to one aspect of the present disclosure includes: a reception section that receives a list including a plurality of path-loss reference signals (PL-RSs); and a control section that controls path-loss calculation by using a specific PL-RS for an uplink signal scheduled by downlink control information (DCI) including a sounding reference signal (SRS) resource indicator field, in a case where none of the plurality of PL-RSs is in an activated state.
    Type: Application
    Filed: May 15, 2020
    Publication date: July 13, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang
  • User terminal, radio base station and radio communication method
    Patent number: 11700607
    Abstract: A terminal is disclosed including a receiver that receives a system information block before establishing a radio resource control connection; and a processor that determines one physical uplink control channel (PUCCH) resource set from a plurality of PUCCH resource sets based on an index within the system information block, and determines one PUCCH resource from a plurality of PUCCH resources within the PUCCH resource set based on a control channel element (CCE) index and a PUCCH resource indicator field within a downlink control information (DCI), wherein all of the plurality of PUCCH resources includes a same number of symbols and a same start symbol index, and at least two PUCCH resources out of the plurality of PUCCH resources include different initial cyclic shift indexes. In other aspects, a radio communication method and a base station are also disclosed.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 11, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
  • Terminal, radio communication method, and base station
    Patent number: 11700609
    Abstract: A terminal is disclosed including a receiver that receives, via higher layer signaling, configuration information regarding a physical uplink control channel (PUCCH) resource set containing one or more PUCCH resources; and a processor that determines a PUCCH resource associated with a value of a field in downlink control information. In other aspects, a radio communication method and a base station are also disclosed.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: July 11, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Hideaki Takahashi, Satoshi Nagata
  • User terminal and radio communication method
    Patent number: 11696288
    Abstract: A terminal is disclosed including a processor that controls a transmission of an uplink control information (UCI) based on configuration information for an uplink control channel (PUCCH) resource; and a transmitter that transmits the UCI using the PUCCH resource, wherein the configuration information comprises at least one of information regarding a PUCCH format, information regarding a frequency domain, information regarding a time domain, and information regarding a code. In another aspect, a radio communication method is also disclosed.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: July 4, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
  • User terminal and radio communication method
    Patent number: 11695513
    Abstract: A terminal is disclosed including a processor that controls a transmission of an uplink control information using a cyclic shift that is based on the uplink control information, the uplink control information including a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK), and a transmitter that transmits the uplink control information in an uplink control channel, wherein intervals between two cyclic shifts that are respectively based on two values of a 1-bit HARQ-ACK are each equal to ?, and intervals between four cyclic shifts that are respectively based on four values of a 2-bit HARQ-ACK are each equal to ?/2. In other aspects, a radio communication method for a user terminal is also disclosed.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 4, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
  • User terminal
    Patent number: 11696302
    Abstract: A user terminal according to an aspect of the present disclosure includes: a receiving section that receives configuration information of a plurality of control resource sets configured in a partial band in a carrier; and a control section that controls, when the plurality of control resource sets are configured to have different pieces of presence information indicating whether or not a certain field indicating a state of a transmission configuration indicator is present in a specific downlink control information (DCI) format, monitoring of downlink control information of the specific DCI format in a plurality of search spaces respectively associated with the plurality of control resource sets.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: July 4, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Yuki Matsumura, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230209561
    Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives a physical downlink control channel (PDCCH) configuration including a plurality of different control resource set (CORESET) pool indexes; and a control section that, when a scheduling offset of an aperiodic channel state information reference signal (A-CSI-RS) is smaller than a threshold and there is another downlink signal using an indicated transmission configuration indication (TCI) state in a same symbol as the A-CSI-RS, determines, based on the downlink signal, quasi collocation (QCL) assumption applied to the A-CSI-RS. According to the aspect of the present disclosure, the A-CSI-RS can be appropriately measured.
    Type: Application
    Filed: May 15, 2020
    Publication date: June 29, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230209569
    Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that, when there is no downlink signal having an indicated TCI state in a same symbol as the A-CSI-RS, receives an aperiodic channel state information-reference signal (A-CSI-RS) using two default transmission configuration indication (TCI) states for a physical downlink shared channel; and a control section that uses, based on at least one of capability information and a physical downlink control channel for triggering of the A-CSI-RS, one default TCI state of the two default TCI states for measurement of the A-CSI-RS. According to the aspect of the present disclosure, the A-CSI-RS can be appropriately measured.
    Type: Application
    Filed: May 14, 2020
    Publication date: June 29, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Shaozhen Guo
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230199763
    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 for a same demodulation reference signal (DMRS) port for physical downlink shared channel (PDSCH); and a control section that determines, based on downlink control information, at least one of a TCI state and resource allocation of each of a plurality of PDSCHs that carry same downlink data. According to an aspect of the present disclosure, it is possible to appropriately receive downlink data from a plurality of transmission points.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 22, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Xiaolin Hou
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230199794
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a MAC control element (MAC CE) capable of specifying a plurality of transmission configuration indication (TCI) states for one control resource set, and a control section that controls reception of downlink control information transmitted from each of a plurality of transmission points by using a same control resource set, based on the MAC CE.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 22, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Xiaolin Hou
  • TERMINAL, RADIO COMMUNICATION METHOD, AND SYSTEM
    Publication number: 20230198656
    Abstract: A terminal is disclosed including a processor that determines, when retransmission of a side channel in a communication between a plurality of terminals is performed, a modulation order for the retransmission of the side channel by using a MCS table based on side control information; a transmitter that transmits the side channel based on the determined modulation order, and a receiver that receives downlink control information including at least a UL-SCH indicator field, wherein the processor, if retransmission of an uplink shared channel is performed, determines a time density of a phase tracking reference signal (PTRS) based on whether a modulation and coding scheme (MCS) index is larger than a certain value, and wherein the transmitter transmits the PTRS. In other aspects, a radio communication method, and a system are also disclosed.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Shohei Yoshioka, Satoshi Nagata
  • User terminal and radio communication method
    Patent number: 11683129
    Abstract: A user terminal, according to the present invention, has a transmission section that transmits uplink control information (UCI) by using an uplink control channel, before RRC (Radio Resource Control) connection is set up, and a control section that determines a resource for the uplink control channel for use for transmitting the UCI, based on a given field value in system information.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: June 20, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230189037
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that performs reception in at least one of a zero power channel state information reference signal (ZP-CSI-RS) resource and a non zero power channel state information reference signal (NZP-CSI-RS) resource configured for a plurality of transmission/reception points, and a control section that controls interference measurement for at least one of a periodic channel state information (CSI) report, a semi-persistent CSI report, and an aperiodic CSI report based on the reception. According to an aspect of the present disclosure, measurement and reporting of CSI for a multi panel/TRP can be appropriately performed.
    Type: Application
    Filed: April 30, 2020
    Publication date: June 15, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • TERMINAL AND RADIO COMMUNICATION METHOD
    Publication number: 20230189261
    Abstract: A terminal according to one aspect of the present disclosure includes: a reception section that receives at least one of one downlink control information and a plurality of pieces of downlink control information, the one downlink control information being used to schedule a plurality of Physical Downlink Shared Channels (PDSCHs), and the plurality of pieces of downlink control information being respectively used to schedule the plurality of PDSCHs; and a control section that controls the reception of the plurality of PDSCHs in a given duration based on one of quasi-co-location associated with a first control resource set for the one downlink control information, and quasi-co-location associated with a second control resource set for the plurality of pieces of downlink control information.
    Type: Application
    Filed: November 28, 2019
    Publication date: June 15, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230188287
    Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines a panel corresponding to a reference signal for measurement (Sounding Reference Signal (SRS)) resource set or an SRS resource, and a transmitting section that performs SRS transmission in the SRS resource set or the SRS resource by using the determined panel and transmits a report for the determined panel corresponding to the SRS resource set or the SRS resource. According to one aspect of the present disclosure, it is possible to appropriately determine a correspondence relationship between a panel and an SRS.
    Type: Application
    Filed: April 30, 2020
    Publication date: June 15, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230189270
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a plurality of specific configurations in relation to a channel state information (CSI) report configuration, and a control section that configures a CSI report including CSI for each group such that the CSI report includes CSI based on a first specific configuration and CSI based on a second specific configuration, the first specific configuration and the second specific configuration being out of the plurality of specific configurations. According to one aspect of the present disclosure, it is possible to preferably use a CSI report related to group-based beam reporting.
    Type: Application
    Filed: April 10, 2020
    Publication date: June 15, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Shaozhen Guo, Jing Wang, Xiaolin Hou
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    Publication number: 20230189320
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives one or more synchronization signal blocks (SSBs) from one or more transmission points installed in a movement path, and a control section that determines a transmission configuration indication (TCI) state and an applicable duration of the TCI state to be applied to at least one of a channel and a signal received, based on measurement results of the one or more SSBs. According to an aspect of the present disclosure, radio communication in a moving object can be appropriately controlled.
    Type: Application
    Filed: April 30, 2020
    Publication date: June 15, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata