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).

  • Publication number: 20230389082
    Abstract: A terminal includes: a transmission unit that transmits a random access preamble as the first message in a random access channel procedure; and a reception unit that receives a response message to the first message as the second message in the random access channel procedure; wherein the transmission unit transmits a third message via a physical uplink shared channel in the random access channel procedure, after receiving the second message, and the transmission unit performs a repetitive transmission of the third message.
    Type: Application
    Filed: October 15, 2020
    Publication date: November 30, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Daisuke Kurita, Hiroki Harada
  • Publication number: 20230388932
    Abstract: A radio communication node (100 B) receives a plurality of control parameters of transmission power of a radio signal to an upper node, and controls transmission power by using any of the control parameters based on a transmission/reception pattern of the radio signal with a child node.
    Type: Application
    Filed: October 15, 2020
    Publication date: November 30, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20230388806
    Abstract: A channel access procedure is executed in a second frequency band different from the first frequency band. A radio base station executes a channel access procedure using a single directional reception beam, and transmits a single synchronization signal block in a channel occupancy time after the channel access procedure.
    Type: Application
    Filed: October 15, 2020
    Publication date: November 30, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Shinya Kumagai, Naoya Shibaike, Mayuko Okano
  • Patent number: 11832278
    Abstract: A terminal is disclosed including a receiver that receives a synchronization signal block comprising a broadcast channel comprising given information, provided by higher layer signaling, regarding a control resource set for a control channel; and a processor that determines an offset in a frequency direction with respect to a synchronization signal block including the broadcast channel and the control resource set, wherein the offset is based on the given information. In other aspects, a radio communication method, a base station, and a system are also disclosed.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: November 28, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Kazuki Takeda, Daisuke Murayama, Satoshi Nagata
  • Patent number: 11832114
    Abstract: The present invention is designed to reduce the time it takes to form adequate beams, in communication using beamforming. According to one aspect of the present invention, a user terminal has a receiving section that, using temporally orthogonal radio resources, forms receiving beams and receives reference signals that are transmitted in different transmitting beams respectively, a measurement section that performs measurements based on the reference signals, and a control section that controls the forming of the receiving beams so that at least one of the reference signal is received in a given period set.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 28, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Hiroki Harada, Yoshihisa Kishiyama, Satoshi Nagata, Yousuke Sano
  • Patent number: 11825430
    Abstract: An apparatus is disclosed including an input unit that receives an input; and a communication module coupled to a processor that measures power of synchronization signal blocks received from a base station, wherein the processor selects a synchronization signal block with measured power above a threshold, wherein the communication module transmits a preamble using a resource corresponding to the selected synchronization signal block, and wherein the communication module performs retransmission for preamble transmission that uses the resource, the retransmission being performed using another resource corresponding to the selected synchronizations signal block or another synchronization signal block with measured power above the threshold. In other aspects, another apparatus is also disclosed.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: November 21, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Tomoya Ohara, Hiroki Harada
  • Patent number: 11818795
    Abstract: A terminal is disclosed including a processor coupled to a receiver that performs a measurement for a radio link monitoring (RLM) using a reference signal for the RLM; and controls, based on a subcarrier spacing (SCS) of the reference signal, a scheduling restriction on data during the measurement for the RLM, wherein the processor assumes that a condition for enabling transmission or reception of the data during the measurement for the RLM is more moderate than a condition for enabling transmission or reception of data during a radio resource management (RRM) measurement. In other aspects, a radio communication method and a system are also disclosed.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: November 14, 2023
    Assignee: NTT DOCOMO, INC.
    Inventor: Hiroki Harada
  • Publication number: 20230354048
    Abstract: A terminal includes a reception unit configured to receive a reference signal of a first RAT (Radio Access Technology) and a data signal of a second RAT; and a control unit configured to decode the data signal based on precoder information applied to the reference signal and to the data signal.
    Type: Application
    Filed: February 13, 2020
    Publication date: November 2, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuichi Kakishima, Hiroki Harada
  • Publication number: 20230345314
    Abstract: A terminal includes a receiving unit that receives a configuration on dormancy of one or more secondary cells from a base station through higher layer signaling, and that receives control information including a notification related to dormancy through a physical layer; and a control unit that transitions a secondary cell group configured by the configuration to a dormant state or a non-dormant state on a per secondary cell group basis, based on a specific field included in the control information.
    Type: Application
    Filed: February 2, 2021
    Publication date: October 26, 2023
    Applicant: NTT DOCOMO, INC.
    Inventor: Hiroki Harada
  • Publication number: 20230345430
    Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines a periodicity different from a second periodicity of at least one of a synchronization signal block, a control resource set (CORESET) 0, a physical downlink shared channel for carrying a system information block 1, an update of a physical broadcast channel in the synchronization signal block, and an update of the system information block 1, for a second terminal, the second terminal having at least one of a second bandwidth wider than a bandwidth of the terminal and a second number of antennas greater than the number of antennas of the terminal, and a receiving section that performs reception based on the periodicity. According to one aspect of the present disclosure, initial access can be appropriately performed.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 26, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daiki Takeda, Shinya Kumagai, Hiroki Harada
  • Publication number: 20230345555
    Abstract: A radio communication node receives resource information indicating a type of resources allocated to a radio link with a lower node from a network and establishes the radio link based on the resource information. The type of resources includes a specific type that can designate availability of a frequency resource in a frequency direction. When the frequency resource is the specific type, the radio communication node can receive the resource information indicating the availability of the frequency resource.
    Type: Application
    Filed: July 30, 2020
    Publication date: October 26, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Xiaolin Hou
  • Patent number: 11799603
    Abstract: A user apparatus that uses a plurality of subcarrier spacings is disclosed. The user apparatus includes a receiver that receives a synchronization signal and system information. The user apparatus further includes a processor that determines, on a basis of the subcarrier spacings, positions of symbols to which periodic blocks including the synchronization signal and the system information are mapped. In other aspects, a base station apparatus and a communication method are also disclosed.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: October 24, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Daiki Takeda, Hiroki Harada, Satoshi Nagata
  • Publication number: 20230336386
    Abstract: In a case of using a different frequency band that is different from a frequency band including one or a plurality of frequency ranges, a terminal applies common initial access configurations to all of a plurality of subcarrier spacings. The terminal transmits an initial access signal via an initial access channel set based on the initial access configurations.
    Type: Application
    Filed: October 25, 2019
    Publication date: October 19, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Satoshi Nagata, Tomoya Ohara
  • Patent number: 11792751
    Abstract: To appropriately control communication using at least one of a synchronization signal block and a reference signal even when communication is performed using a BWP, according to one aspect of the present disclosure, there is provided a user terminal including: a receiving section that receives at least one of a synchronization signal block and a given reference signal in a given bandwidth part (BWP); and a control section that decides whether to apply a synchronization signal block to a specific operation based on at least one of information regarding a frequency position of a synchronization signal block commonly reported by a serving cell and information regarding a frequency position of a synchronization signal block in the BWP.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: October 17, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Hideaki Takahashi, Yuichi Kakishima, Kazuaki Takeda, Kazuki Takeda
  • Publication number: 20230327841
    Abstract: Provided is a terminal having: a controlling unit configured to determine a subcarrier spacing to be applied to a physical uplink control channel satisfying a bandwidth and map the physical uplink control channel to a physical resource; and a transmitting unit configured to transmit the physical resource to a base station.
    Type: Application
    Filed: October 12, 2020
    Publication date: October 12, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Mayuko Okano, Hiroki Harada, Naoya Shibaike, Shohei Yoshioka
  • Publication number: 20230319823
    Abstract: A terminal including: a reception unit configured to receive a piece of control information for scheduling PDSCH reception in multiple CCs from a base station apparatus; and a control unit configured to obtain a feedback timing indicator value from the control information, and to determine a feedback timing for each CC of the multiple CCs by using the feedback timing indicator value.
    Type: Application
    Filed: August 5, 2020
    Publication date: October 5, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Masaya Okamura, Hiroki Harada, Tomoya Ohara
  • Patent number: 11777775
    Abstract: In order to transmit and receive signals properly in a radio communication system in which communication is performed based on different formats than in existing LTE systems, a user terminal, according to one aspect of the present invention, has a receiving section that receives a synchronization signal block, which contains a plurality of synchronization signals and a plurality of broadcast channels that are allocated in different time fields, and a control section that selects time information of the synchronization signal block based on the broadcast channels and/or demodulation reference signals allocated in the same time fields with the broadcast channels, and the synchronization signal block contains broadcast channels that are allocated in three or more time fields, including at least contiguous time fields, respectively.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 3, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Daiki Takeda, Satoshi Nagata
  • Patent number: 11778624
    Abstract: A terminal is disclosed that includes a receiver that receives higher layer signaling that indicates a periodic time period in which uplink transmission is not performed and a processor that monitors downlink control information for scheduling system information in the time period. In other aspects, a radio communication method and a base station are disclosed.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: October 3, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Yoshihisa Kishiyama, Hiroki Harada, Kazuaki Takeda, Satoshi Nagata
  • Publication number: 20230309154
    Abstract: A radio communication node (100B) receives, from a network, resource information indicating the type of a resource to be allocated to a radio link with a lower node, and establishes the radio link based on the resource information. The radio communication node (100B) receives resource information indicating the type of a time resource in a time direction and the type of a frequency resource in a frequency direction.
    Type: Application
    Filed: June 29, 2020
    Publication date: September 28, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Xiaolin Hou
  • Publication number: 20230309040
    Abstract: A radio communication node (100 B) configures a number of first symbols to be used for dynamically adjusting transmission timing when performing uplink transmission in a first radio link connected to the upper node, and notifies the upper node thereof.
    Type: Application
    Filed: August 27, 2020
    Publication date: September 28, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Lan Chen