Patents by Inventor Hiroki Harada

Hiroki Harada 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).

  • User terminal and radio communication method
    Patent number: 11588669
    Abstract: The present invention is designed to perform UL transmission using a transmission format suitable for content-based uplink (UL) transmission. A user terminal according to the present invention has a transmission section that transmits UL data without UL grants from a radio base station, and a control section that controls transmission of the UL data according to a transmission format, and the transmission format is comprised of an access channel for transmitting a randomly-selected preamble, a control channel for transmitting control information for the UL data, and a data channel for transmitting the UL data.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: February 21, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata, Hiroki Harada
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20230048526
    Abstract: A terminal includes: a receiving unit receiving single control information for scheduling a plurality of cells; and a control unit receiving a transport block from the plurality of cells, based on the control information, in which the control unit: receives different transport blocks in each of the plurality of cells; receives a same transport block in each of the plurality of cells; or receives a part of a transport block in each of the plurality of cells.
    Type: Application
    Filed: January 10, 2020
    Publication date: February 16, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20230049707
    Abstract: A terminal includes a control unit configured to perform LBT (Listen before talk) in a frequency band above a predetermined frequency, and a transmission unit configured to transmit a signal based on a result of the LBT, wherein the control unit performs the LBT with a mechanism different from LBT performed in a frequency band below the predetermined frequency.
    Type: Application
    Filed: February 13, 2020
    Publication date: February 16, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shinya Kumagai, Satoshi Nagata
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20230051403
    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: Application
    Filed: January 23, 2020
    Publication date: February 16, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Shinya Kumagai, Hiroki Harada, Satoshi Nagata
  • WIRELESS COMMUNICATION NODE
    Publication number: 20230049634
    Abstract: A wireless communication node sets a downlink target value of a received power of a downlink from an upper node based on a received power of an uplink from a lower node, and transmits, to the upper node, power control information based on the downlink target value.
    Type: Application
    Filed: December 25, 2019
    Publication date: February 16, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada
  • TERMINAL AND BASE STATION
    Publication number: 20230050703
    Abstract: A terminal includes a reception unit that receives a synchronization signal block in an unlicensed band of a high frequency band higher than or equal to a frequency band of a frequency range 2 (FR2), the FR2 being in a range including a frequency range 1 (FR1) that is a low frequency band and the FR2 that is a high frequency band in a new radio (NR) system; and a control unit that identifies an index of a candidate position for transmitting the synchronization signal block based on a sequence of a demodulation reference signal of a broadcast channel included in the synchronization signal block and a payload of the broadcast channel.
    Type: Application
    Filed: January 24, 2020
    Publication date: February 16, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daisuke Kurita, Satoshi Nagata, Jing Wang
  • TERMINAL
    Publication number: 20230051987
    Abstract: A terminal including: a reception unit configured to receive, from a base station apparatus, configuration information of a time window for measurement based on an SSB; and a control unit configured to measure based on the SSB, wherein the configuration information includes, as a time length of the time window, a time length selected from a plurality of time lengths including a time length shorter than a predetermined time length, and wherein the control unit performs measurement based on the SSB within a time window of a time length included in the configuration information.
    Type: Application
    Filed: January 24, 2020
    Publication date: February 16, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Takuma Takada, Satoshi Nagata
  • TERMINAL AND BASE STATION
    Publication number: 20230039325
    Abstract: A terminal includes a receiving unit that receives control information transmitted on a second cell, the control information including information used to assign a resource for a downlink shared channel reception or a resource for an uplink shared channel transmission in a first cell; and a control unit that determines at least one of a measurement of a channel state information reference signal (CSI-RS), a measurement of a tracking reference signal (TRS), a transmission of a sounding reference signal (SRS), or a transmission of a physical random access channel (PRACH) is triggered, regardless of a content of information other than the information used to assign the resource included in the control information.
    Type: Application
    Filed: February 12, 2020
    Publication date: February 9, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Satoshi Nagata
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20230044495
    Abstract: A terminal includes: a receiving unit of receiving first information for configuring scheduling and second information for executing scheduling from a base station; and a control unit that identifies a single scheduled carrier or a plurality of scheduled carriers, based on the first information and the single second information.
    Type: Application
    Filed: January 10, 2020
    Publication date: February 9, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20230041809
    Abstract: A terminal includes a receiving unit that receives, through a first component carrier of a plurality of component carriers forming carrier aggregation, scheduling information for one or more second component carriers of the plurality of component carriers; and a control unit that configures rate matching on the one or more second component carriers, based on configuration information on the rate matching included in the scheduling information.
    Type: Application
    Filed: January 10, 2020
    Publication date: February 9, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang
  • User equipment, radio base station, and wireless communication method
    Patent number: 11575487
    Abstract: This invention aims to appropriately transmit HARQ-ACK in future wireless communication systems. A user equipment includes a reception unit which receives a DL signal, and a control unit which controls transmission of a delivery acknowledgement signal for the DL signal, wherein the reception unit receives information concerning an instruction to transmit the delivery acknowledgement signal and the control unit controls transmission of the delivery acknowledgement signal on the basis of the information concerning the instruction to transmit the delivery acknowledgement signal. The reception unit of the user equipment further receives downlink control information including the information concerning the instruction to transmit the delivery acknowledgement signal.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: February 7, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Hiroki Harada, Satoshi Nagata
  • RADIO COMMUNICATION NODE
    Publication number: 20230034003
    Abstract: When a transmission timing of a downlink and a reception timing of an uplink at a radio communication node 100B are aligned, a radio communication node 100A determines an alignment value of the reception timing based on timing information used to determine transmission timing of the uplink, or an offset value from the timing information. The radio communication node 100A transmits the determined alignment value or offset value to the radio communication node 100B.
    Type: Application
    Filed: November 28, 2019
    Publication date: February 2, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Xiaolin Hou
  • TERMINAL AND BASE STATION
    Publication number: 20230029702
    Abstract: A terminal includes a reception unit that receives a synchronization signal block in an unlicensed band of a high frequency band higher than or equal to a frequency band of a frequency range 2 (FR2), the FR2 being in a range including a frequency range 1 (FR1) that is a low frequency band and the FR2 that is a high frequency band in a new radio (NR) system; and a control unit that identifies, based on the received synchronization signal block, an index of a candidate position for a transmission corresponding to the received synchronization signal block, from among candidate positions for transmitting a synchronization signal block, the number of the candidate positions being greater than a predetermined number.
    Type: Application
    Filed: January 31, 2020
    Publication date: February 2, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Jing Wang
  • User equipment and base station apparatus for transmitting a random access preamble
    Patent number: 11570817
    Abstract: A user equipment for communicating with a base station apparatus is disclosed, the user equipment including a receiver that receives information related to random access; a processor that identifies, based on the information related to the random access, a first preamble format, a second preamble format, and random access channel resources; a transmitter that transmits a random access preamble using the random access channel resources, wherein the transmitter transmits the random access preamble using a last resource in a time domain of the random access channel resources and the second preamble format, and the transmitter transmits the random access preamble using a resource other than the last resource in the time domain and the first preamble format. In other aspects, a base station apparatus and a communication method are also disclosed.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: January 31, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Tomoya Ohara, Hiroki Harada
  • User equipment, and uplink transmission timing adjustment method
    Patent number: 11570762
    Abstract: A terminal is disclosed that includes a transmitter that performs uplink transmission; and a processor that adjusts timing of the uplink transmission with respect to a downlink reception timing, wherein, when a band of a cell in which uplink transmission is performed is not a predetermined band, the processor adjusts the timing by using a same offset value when a duplex mode of the band of the cell is frequency division duplex (FDD) and when the duplex mode of the band of the cell is time division duplex (TDD). In other aspects, a base station and an uplink transmission timing adjustment method executed by the terminal are also disclosed.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 31, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Tomoya Ohara
  • TERMINAL AND BASE STATION
    Publication number: 20230023821
    Abstract: A terminal includes a reception unit that receives configuration information in a high frequency band higher than or equal to a frequency band of a frequency range 2 (FR2), the FR2 being in a range including a frequency range 1 (FR1) that is a low frequency band and the FR2 that is a high frequency band in a new radio (NR) system; and a control unit that configures at least one of a format of a random access preamble, a sequence of the random access preamble, or a subcarrier spacing applied to a channel on which the random access preamble is to be transmitted, wherein the at least one of the format, the sequence, or the subcarrier spacing is associated with an index included in the configuration information.
    Type: Application
    Filed: January 31, 2020
    Publication date: January 26, 2023
    Applicant: NTT DOCOMO INC.
    Inventors: Hiroki Harada, Tomoya Ohara, Satoshi Nagata, Jing Wang
  • User terminal and transmission timing control method
    Patent number: 11564222
    Abstract: A terminal is disclosed including a processor that adjusts an uplink transmission timing based on granularity relative to a largest subcarrier spacing among subcarrier spacings of a plurality of uplink bandwidth parts in a same timing advance group and based on a timing advance command; and a transmitter that performs uplink transmission according to the uplink transmission timing. In other aspects, a transmission method performed by a terminal is also disclosed.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: January 24, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Hideaki Takahashi, Kazuki Takeda, Tomoya Ohara, Hiroki Harada
  • TERMINAL AND RADIO COMMUNICATION METHOD
    Publication number: 20230020735
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives at least one of information related to a type of one or more transmission points installed in a movement path and information related to a transmit beam transmitted from the one or more transmission points, and a control section that controls reception of DL transmission transmitted from each of the one or more transmission points, based on the information being received.
    Type: Application
    Filed: December 9, 2019
    Publication date: January 19, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Hiroki Harada, Satoshi Nagata
  • TERMINAL AND COMMUNICATION METHOD
    Publication number: 20230020414
    Abstract: A terminal includes a receiving unit that receives, through a first component carrier of a plurality of component carriers forming carrier aggregation, scheduling information for one or more second component carriers of the plurality of component carriers; and a control unit that activates, based on identification information of a Bandwidth part (BWP) included in the scheduling information, the BWP of a plurality of BWPs configured for the one or more second component carriers.
    Type: Application
    Filed: January 10, 2020
    Publication date: January 19, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Lihui Wang
  • TERMINAL
    Publication number: 20230010322
    Abstract: A terminal transmits an uplink control channel corresponding to an antenna beam transmitted from a radio base station. The terminal assumes a symbol location of a repetition of the uplink control channel based on an explicit or implicit notification.
    Type: Application
    Filed: February 28, 2020
    Publication date: January 12, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Shohei Yoshioka