Patents Assigned to NTT DoCoMo, Inc.
  • User device and base station device
    Patent number: 11917438
    Abstract: A user device includes a receiving unit that receives from a base station device a measurement configuration including a condition for triggering a measurement report; a control unit that executes a measurement based on the measurement configuration; and a transmitting unit that transmits a measurement report to the base station device in response to the condition for triggering a measurement report being met, wherein the control unit modifies the measurement configuration based on a parameter indicating mobility capability or based on a type of user device.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: February 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Naoki Fujimura, Takuma Takada
  • Communication device and base station
    Patent number: 11917595
    Abstract: A communication device includes a receiving unit that receives at least one of configuration information of a same center frequency used for downlink reception and sidelink reception in one slot or configuration information of a same center frequency used for uplink transmission and sidelink transmission in the one slot; and a control unit that configures, based on the received configuration information, at least one of the same center frequency for the downlink reception and the sidelink reception in the one slot or the same center frequency for the uplink transmission and the sidelink transmission in the one slot.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: February 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Ryosuke Osawa, Kazuaki Takeda, Satoshi Nagata
  • Terminal and communication method
    Patent number: 11916636
    Abstract: A terminal includes a transmission unit configured to transmit, to a base station, information indicating whether or not transmission diversity is supported, a reception unit configured to receive, from the base station, information indicating a transmission diversity scheme in a case where transmission diversity is supported, and a control unit configured to switch to a transmission diversity scheme based on the information indicating the transmission diversity scheme, wherein the transmission unit is configured to perform transmission by applying the transmission diversity scheme to which the switch was made.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: February 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiromasa Umeda, Hideaki Takahashi, Yuta Oguma
  • Re-ranking device
    Patent number: 11914601
    Abstract: Provided is a re-ranking device that enables a re-ranking process with less possibility of decrease in accuracy due to shortage of data. A re-ranking device 100 includes an input unit 101 that receives a search query from one user, a re-ranking model storage unit 106 that stores a plurality of re-ranking models prepared in accordance with common information of a plurality of users, a search unit 102 that performs a search on the basis of the search query and obtains a search result, and a re-ranking processing unit 107 that selects one re-ranking model on the basis of common information of the one user and performs a re-ranking process on the search result using the one re-ranking model.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: February 27, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Anna Oonishi, Satoshi Kawasaki, Yusuke Fukazawa
  • RADIO BASE STATION AND TERMINAL
    Publication number: 20240063972
    Abstract: A radio base station receives the uplink channel and performs channel estimation of the uplink channel allocated across the plurality of slots by using the demodulation reference signal allocated to the plurality of consecutive slots.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Daisuke Kurita, Hiroki Harada
  • TERMINAL, SYSTEM AND COMMUNICATION METHOD
    Publication number: 20240064650
    Abstract: A terminal is disclosed including a control section that generates Capability information including a Power Class of the terminal; and a transmission section that transmits the Capability information, wherein Max TRP (Total Radiated Power) and Max EIRP (Equivalent Isotropic Radiated Power) are specified for each of the Power Classes, and in at least one of the Power Classes, each of a specified value of Max EIRP for a first band and a specified value of Max EIRP for a second band is defined separately in Inter-band CA (Carrier Aggregation) using two bands. In other aspects, a system and a communication method are also disclosed.
    Type: Application
    Filed: January 14, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuta Oguma, Ryu Kitagawa
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    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
  • TERMINAL AND BASE STATION
    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
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20240064754
    Abstract: A terminal has: a receiving unit configured to receive information related to a PDCCH (Physical Downlink Control CHannel) monitoring reduction function; and a control unit configured to start and end the PDCCH monitoring reduction function based on the information related to the PDCCH monitoring reduction function.
    Type: Application
    Filed: January 18, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventor: Tomoya Ohara
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    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
  • BASE STATION AND COMMUNICATION METHOD
    Publication number: 20240064719
    Abstract: A base station includes a reception unit configured to receive, from a terminal, information indicating band combinations supported by the terminal; a control unit configured to generate first information indicating all band combinations including a supported band of a primary cell among the band combinations supported by the terminal; and a transmission unit configured to transmit the first information to a secondary node. The reception unit is configured to receive, from the secondary node, second information indicating a band combination used by the secondary node among the all band combinations, and the transmission unit is configured to transmit the second information to the terminal.
    Type: Application
    Filed: January 13, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Tianyang Min, Yuya Hoshizaki
  • CHANNEL RECONSTRUCTION METHOD, BASE STATION AND TERMINAL
    Publication number: 20240063969
    Abstract: The present disclosure provides a base station, a terminal and channel reconstruction methods performed by a base station and a terminal. The base station includes: a transmitting unit configured to transmit channel state information reference signals of multiple ports to a terminal, wherein the channel state information reference signals of multiple ports have a first density in frequency domain in one time interval; a receiving unit configured to receive precoding matrix indication information of a first granularity from the terminal; a processing unit configured to determine a channel of a second granularity according to the precoding matrix indication information of the first granularity, and perform downlink precoding on the channel, wherein the second granularity is finer than the first granularity.
    Type: Application
    Filed: February 1, 2021
    Publication date: February 22, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Xin Wang, Xiaolin Hou, Anxin Li, Lan Chen, Hiroki Harada
  • TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION
    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
  • Terminal and radio communication method
    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
  • Uplink control information (UCI) transmission for bandwidth part (BWP) switching
    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
  • METHODS OF CSI-RS ASSISTED PARTIAL FREQUENCY SOUNDING WITH SRS
    Publication number: 20240056257
    Abstract: A wireless communication method is disclosed that includes receiving, via downlink control information (DCI) or higher layer signaling, configuration information for a. Sounding Reference Signal (SRS) configuration and configuring one or more SRS resources for partial or full frequency sounding based on the configuration information. In other aspects, a terminal and a wireless communication system are also disclosed.
    Type: Application
    Filed: January 21, 2022
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Nadisanka Rupasinghe, Yuki Matsumura
  • TERMINAL, AND BASE STATION
    Publication number: 20240056272
    Abstract: A terminal includes: a control unit configured to perform monitoring of a control channel in an area in which, in a case of using a certain SCS, a number of symbols is greater than a number of symbols corresponding to another SCS that is less than the certain SCS; and a reception unit configured to receive control information via the control channel.
    Type: Application
    Filed: January 15, 2021
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Mayuko Okano, Naoya Shibaike, Hiroki Harada, Yuki Takahashi
  • BASE STATION AND TERMINAL
    Publication number: 20240056142
    Abstract: The present disclosure provides a base station and a terminal. The base station includes: a receiving unit configured to receive precoding matrix indicator information of a first granularity from a terminal; and a processing unit configured to perform channel reconstruction according to the precoding matrix indicator information to obtain a first channel, use a super-resolution network to perform interpolation and denoising processing on a channel having the first granularity to obtain a second channel, and perform downlink precoding on the second channel, wherein the first channel has the first granularity, the second channel has a second granularity, and the second granularity is finer than the first granularity.
    Type: Application
    Filed: February 1, 2021
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Xin Wang, Xiaolin Hou, Anxin Li, Lan Chen, Hiroki Harada
  • TERMINAL, BASE STATION, AND TRANSMISSION METHOD
    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
  • TERMINAL, BASE STATION, AND TRANSMISSION METHOD
    Publication number: 20240057031
    Abstract: A terminal is disclosed including a reception unit configured to receive, from a base station, configuration information on a reference signal of uplink for positioning in a non-connected state; and a transmission unit configured to transmit the reference signal based on the configuration information in the non-connected state. In other aspects, another terminal, a base station, and a transmission method are also disclosed.
    Type: Application
    Filed: March 17, 2021
    Publication date: February 15, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Masaya Okamura, Tomoya Ohara, Hiroki Harada