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: 20250119927
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives configuration information related to a single frequency network (SFN) physical downlink shared channel (PDSCH), and a control section that determines, based on a condition related to offset from reception of downlink control information (DCI) for scheduling the SFN PDSCH until reception of the SFN PDSCH, whether the DCI includes a transmission configuration indication (TCI) field, and the configuration information, a TCI state to be applied to the SEN PDSCH. According to one aspect of the present disclosure, it is possible to appropriately control operation related to a TCI state/default TCI state.
    Type: Application
    Filed: January 21, 2022
    Publication date: April 10, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Publication number: 20250119854
    Abstract: A terminal comprising: a communication unit configured to perform transmission and reception in a first RAT (Radio Access Technology); and a control unit configured to control communications in the first RAT. The control unit performs a synchronization in the first RAT based on a synchronization in a second RAT.
    Type: Application
    Filed: January 28, 2022
    Publication date: April 10, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Naoya Shibaike, Satoshi Nagata
  • Publication number: 20250119266
    Abstract: A wireless relay device includes: a communication unit configured to relay a downlink wireless signal or an uplink wireless signal; a reception unit configured to receive information related to a control of relaying of the downlink wireless signal or the uplink wireless signal; and a control unit configured to perform the control of relaying the downlink wireless signal or the uplink wireless signal based on the control information during a period from reception of the received control information or from a start of application of the received control information until after a specified period.
    Type: Application
    Filed: December 27, 2021
    Publication date: April 10, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Satoshi Nagata
  • Publication number: 20250119256
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information including a resource assignment of a physical uplink shared channel and a value of an antenna port indication, and a control section that controls transmission of a demodulation reference signal (DMRS), based on an association between the value, the number of code division multiplexing (CDM) groups, and a DMRS port. The number of the CDM groups for DMRS configuration type 1 is larger than 2, and the number of the CDM groups for DMRS configuration type 2 is larger than 3. According to one aspect of the present disclosure, an appropriate number of DMRS ports can be used.
    Type: Application
    Filed: February 10, 2022
    Publication date: April 10, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • 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: 12273749
    Abstract: A terminal includes a receiving section that receives cell-specific or terminal-specific configuration information related to a physical downlink control channel, and a control section that controls, on the basis of the configuration information, a configuration of a search space set to monitor a physical downlink control channel to schedule a physical downlink shared channel associated with a multicast traffic channel. Therefore, it is possible to appropriately control monitoring of a physical downlink control channel to schedule a physical downlink shared channel to transfer multicast data.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: April 8, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • Patent number: 12273158
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that determines a quasi-co-located (QCL) parameter for downlink, when spatial relation information and path-loss reference signal information for uplink transmission are not provided and default spatial relation and path-loss reference signal enabling information for the uplink transmission is provided, in a case where a plurality of different TCI states mapped to a transmission configuration indication (TCI) code point are not provided; and a transmitting section that transmits the uplink transmission by using the QCL parameter. According to one aspect of the present disclosure, a spatial relation can be appropriately determined.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: April 8, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • Publication number: 20250112747
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a reference signal (RS); and a control section that, when a single frequency network (SFN) scheme is configured and at least one of a radio link failure (radio link monitoring (RLM))-RS and a beam failure detection (BFD)-RS is not configured, selects the RS corresponding to a control resource set (CORESET) determined based on a specific rule as at least one of the RLM-RS and the BFD-RS. According to one aspect of the present disclosure, at least one of RLM and BFD can be appropriately performed.
    Type: Application
    Filed: February 10, 2022
    Publication date: April 3, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata
  • 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: 20250113369
    Abstract: A terminal includes: a transmission unit configured to transmit, to a first terminal, a signal for reserving a plurality of resources in a resource pool; a reception unit configured to receive, from the first terminal, an indication related to a collision indicating that at least one of the plurality of resources reserved by the signal overlaps with a resource reserved by a second terminal; and a control unit configured to determine which one of the reserved resources is to overlap with the resources reserved by the second terminal, based on the indication related to the collision, wherein after excluding the determined reserved resource from a candidate resource set, the control unit reselects a resource from the candidate resource set.
    Type: Application
    Filed: January 17, 2023
    Publication date: April 3, 2025
    Inventors: Shohei Yoshioka, Satoshi Nagata
  • Patent number: 12267694
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a plurality of pieces of configuration information indicating a plurality of control resource sets, and a control section that, when the plurality of pieces of configuration information do not include a control resource set pool index for one or more control resource sets of the plurality of control resource sets, determines a value of the control resource set pool index for the one or more control resource sets. According to one aspect of the present disclosure, it is possible to appropriately determine an operation for multiple panels/TRPs.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: April 1, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Shaozhen Guo
  • Patent number: 12267134
    Abstract: A terminal, as disclosed, includes: a processor that, for a plurality of physical downlink shared channels (PDSCHs) transmitted from a plurality of transmission reception points (TRPs), respectively, controls transmission of capability information for indicating a first maximum number regarding a number of layers per PDSCH and a second maximum number regarding a total number of layers of the plurality of PDSCHS; and a receiver that receives the plurality of PDSCHs. The processor controls reporting of a single channel state information (CSI) for the plurality of TRPs, the single CSI indicating a first rank and a second rank that are determined according to a set of ranks based on higher layer signaling. In other aspects, a radio communication method, a base station, and a system are also disclosed.
    Type: Grant
    Filed: June 14, 2024
    Date of Patent: April 1, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Shaozhen Guo, Xiaolin Hou
  • Patent number: 12267156
    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: Grant
    Filed: February 16, 2023
    Date of Patent: April 1, 2025
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Shohei Yoshioka, Satoshi Nagata
  • Publication number: 20250106667
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a configuration indicating X channel measurement resources for X transmission/reception points (TRPs) for coherent joint transmission; and a control section that controls channel state information (CSI) reporting including X pieces of CSI corresponding to the X respective channel measurement resources, based on the configuration. According to one aspect of the present disclosure, it is possible to appropriately perform CSI reporting for CJT.
    Type: Application
    Filed: January 28, 2022
    Publication date: March 27, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20250106080
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a reference signal associated with a second physical cell ID (PCI) different from a first physical cell ID (PCI) corresponding to a serving cell; and a control section that controls, by using the reference signal, at least one of radio link monitoring (RLM), beam failure detection (BFD), and beam failure recovery (BFR). According to one aspect of the present disclosure, an RS to be used for at least one of the RLM, BFD, and BFR can be appropriately determined.
    Type: Application
    Filed: July 29, 2021
    Publication date: March 27, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20250105957
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a first parameter for transmission to a first transmission/reception point (TRP) and a second parameter for transmission to a second TRP; and a control section that controls transmission of one transport block over N slots and applies N parameters to the N respective slots, the N parameters including at least one of the first parameter and the second parameter, N being an integer equal to or greater than two. According to one aspect of the present disclosure, it is possible to appropriately carry out transmission of data over a plurality of slots in a case where multi-TRP is configured/indicated.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 27, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Haruhi Echigo, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20250105989
    Abstract: This terminal comprises a control unit that determines a cell to transmit control information on the basis of a timing pattern indicating the order of cells to transmit the control information, and a transmitting unit that transmits the control information in the determined cell. If the timing pattern includes Scell to be de-activated, the timing pattern is changed before Scell is de-activated.
    Type: Application
    Filed: July 26, 2021
    Publication date: March 27, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Satoshi Nagata, Qiping Pi, Jing Wang, Lan chen
  • 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: 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
  • 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