Patents by Inventor Shinya Kumagai
Shinya Kumagai 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).
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Publication number: 20240155519Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a first synchronization signal in a first band; and a control section that simultaneously uses, when a notification indicating presence of a second synchronization signal in a second band is received, the first synchronization signal and the second synchronization signal for at least one of synchronization, reception quality measurement, and radio link quality monitoring. According to one aspect of the present disclosure, it is possible to appropriately use resources according to capability.Type: ApplicationFiled: March 4, 2021Publication date: May 9, 2024Applicant: NTT DOCOMO, INC.Inventors: Shinya Kumagai, Takuma Nakamura, Tomoya Ohara, Daisuke Kurita, Satoshi Nagata
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Publication number: 20240155578Abstract: A terminal comprises: a control unit that performs, when a base station configures a broader carrier bandwidth wider than a maximum carrier bandwidth supported by the terminal, a communication capable of using a second number of frequency resource larger than a first number of frequency resource, the first number of frequency resource is available by the base station on an assumption that the terminal uses the broader carrier bandwidth.Type: ApplicationFiled: March 4, 2021Publication date: May 9, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Shinya Kumagai, Naoya Shibaike, Satoshi Nagata
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Publication number: 20240154774Abstract: A terminal comprises a control unit that applies a target subcarrier spacing lower than a specific subcarrier spacing in a target frequency band, the target frequency band includes at least a prat of a specific frequency range defined with the specific subcarrier spacing as a minimum subcarrier spacing or a frequency band lower than the specific frequency range, wherein the control unit applies a method different from an initial access method related to the specific subcarrier spacing, for at least a part of an initial access method related to the target subcarrier spacing.Type: ApplicationFiled: March 4, 2021Publication date: May 9, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Shinya Kumagai, Naoya Shibaike, Satoshi Nagata
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Publication number: 20240146593Abstract: A terminal comprising: a control unit that applies a target subcarrier spacing lower than a specified subcarrier spacing, in a target frequency band that includes at least a portion of a specified frequency range in which the specified subcarrier spacing is defined as a minimum subcarrier spacing or a frequency band lower than the specified frequency range, wherein a frequency use efficiency of the target subcarrier spacing is higher than the frequency use efficiency of the specified subcarrier spacing.Type: ApplicationFiled: March 4, 2021Publication date: May 2, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroki Harada, Shinya Kumagai, Naoya Shibaike, Satoshi Nagata
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Publication number: 20240147388Abstract: A communication device has: a receiving unit configured to receive information from another communication device; a control unit configured to determine transmission power based on the information; and a transmitting unit configured to transmit a signal, by applying the transmission power to the signal, in autonomously selected resources, to the another communication device.Type: ApplicationFiled: March 12, 2021Publication date: May 2, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
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Publication number: 20240147442Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives, in a first band, information related to a second band; and a control section that simultaneously uses a first signal in the first band and a second signal in the second band for at least one of synchronization, measurement, channel estimation, position estimation, and reference signal transmission. According to one aspect of the present disclosure, it is possible to appropriately use resources according to capability.Type: ApplicationFiled: March 4, 2021Publication date: May 2, 2024Applicant: NTT DOCOMO, INC.Inventors: Shinya Kumagai, Takuma Nakamura, Tomoya Ohara, Daisuke Kurita, Satoshi Nagata
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Publication number: 20240147429Abstract: A communication device includes: a receiving unit configured to receive a preamble in resources that are selected autonomously by another communication device; and a control unit configured to acquire, based on the preamble, information for receiving a control signal from the another communication device, and, in this communication device, the receiving unit receives the control signal from the another communication device based on the information.Type: ApplicationFiled: March 12, 2021Publication date: May 2, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
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Publication number: 20240137156Abstract: A communication device includes: a control unit configured to autonomously determine a first resource to be used for transmission; a transmission unit configured to transmit data to another communication device by using the first resource; and a reception unit configured to receive feedback information corresponding to the data by using a second resource that is autonomously or heteronomously determined by the another communication device.Type: ApplicationFiled: March 2, 2021Publication date: April 25, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
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Publication number: 20240137157Abstract: A communication device includes: a reception unit configured to receive a plurality of data items in a resource autonomously selected by another communication device; a control unit configured to multiplex feedback information corresponding to each of the plurality of data items; and a transmission unit configured to transmit the multiplexed feedback information to the another communication device. The control unit determines which feedback information corresponding to each of the plurality of data items is to be multiplexed and multiplexes the feedback information corresponding to each of the plurality of data items, or the control unit multiplexes the feedback information corresponding to each of the plurality of data items, based on information related to multiplexing of the feedback information corresponding to each of the plurality of data items received by the reception unit from the another communication device.Type: ApplicationFiled: March 2, 2021Publication date: April 25, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
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Publication number: 20240137922Abstract: A communication device has: a control unit configured to autonomously select resources for use for transmission; and a transmitting unit configured to transmit a data signal in the selected resources, and information that indicates the selected resources, to another communication device.Type: ApplicationFiled: March 12, 2021Publication date: April 25, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
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Publication number: 20240137172Abstract: A communication device includes: a control unit configured to determine an antenna port to apply to a data signal; and a transmitting unit configured to transmit, to another communication device, information that indicates the determined antenna port, and the data signal that is transmitted, in autonomously selected resources, by using the determined antenna port.Type: ApplicationFiled: March 12, 2021Publication date: April 25, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
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Patent number: 11965315Abstract: The invention of the present application intends to provide a work machine that can ensure high operability by preventing abrupt actuation of an actuator and a shock to a machine body by use of a bleed-off function at the time of starting of the actuator and that can improve the energy-saving performance by reducing a bleed-off flow rate after the starting of the actuator. For this purpose, a controller opens a bleed-off valve at a timing at which an operation device is being operated and before a flow rate of a hydraulic pump starts increasing, and closes the bleed-off valve at a timing at which the operation device is being operated and after the flow rate of the hydraulic pump has started increasing.Type: GrantFiled: December 8, 2021Date of Patent: April 23, 2024Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Kento Kumagai, Shinya Imura, Yasutaka Tsuruga, Takaaki Chiba, Hiroaki Amano, Shinji Nishikawa, Akihiro Narazaki, Genroku Sugiyama, Shinjiro Yamamoto
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Publication number: 20240129836Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device, and the reception unit receives recommendation information related to installation of the device itself from the first communication device.Type: ApplicationFiled: February 22, 2021Publication date: April 18, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Shinya Kumagai, Daisuke Kurita, Yuki Takahashi, Haruhi Echigo, Yuki Hokazono, Satoshi Nagata
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Publication number: 20240129961Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device, and the transmission unit transmits information related to control of the second communication device to the first communication device in a case where the connection to the first communication device is established.Type: ApplicationFiled: February 22, 2021Publication date: April 18, 2024Applicant: NTT DOCOMO, INC.Inventors: Shinya Kumagai, Shohei Yoshioka, Haruhi Echigo, Yuki Hokazono, Yuki Takahashi, Daisuke Kurita, Satoshi Nagata
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Publication number: 20240129065Abstract: A communication device has: a control unit configured to determine a coding-related parameter to apply to a data signal; and a transmitting unit configured to transmit the determined coding-related parameter, and the data signal to which the coding-related parameter is applied, in autonomously selected resources, to another communication device.Type: ApplicationFiled: March 12, 2021Publication date: April 18, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata
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Publication number: 20240129777Abstract: A communication apparatus includes a receiving unit configured to receive, from another communication apparatus, a signal requesting a CSI (Channel State Information) report and a CSI reference signal, in a resource autonomously selected by the another communication apparatus; a control unit configured to perform measurement by using the CSI reference signal; and a transmitting unit configured to transmit, to the another communication apparatus, a CSI report based on a result of the measurement.Type: ApplicationFiled: March 5, 2021Publication date: April 18, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
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Publication number: 20240129088Abstract: A communication apparatus includes a transmitting unit configured to transmit, to another communication apparatus, a signal requesting transmission of SRS (Sounding reference signal) in a resource autonomously selected; a receiving unit configured to receive the SRS from the another communication apparatus; and a control unit configured to perform measurement by using the SRS.Type: ApplicationFiled: March 5, 2021Publication date: April 18, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Shinya Kumagai, Yuki Takahashi, Mayuko Okano, Masaya Okamura, Satoshi Nagata
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Publication number: 20240129838Abstract: A communication device includes: a transmission unit configured to transmit a connection request to a first communication device; a reception unit configured to receive a connection permission from the first communication device; and a control unit configured to establish a first connection to the first communication device. The control unit controls a communication of a second communication device.Type: ApplicationFiled: February 22, 2021Publication date: April 18, 2024Applicant: NTT DOCOMO, INC.Inventors: Shinya Kumagai, Shohei Yoshioka, Haruhi Echigo, Yuki Hokazono, Yuki Takahashi, Daisuke Kurita, Satoshi Nagata
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Publication number: 20240121818Abstract: A communication device includes: a control unit configured to autonomously determine a resource to be used for transmission; a reception unit configured to execute an LBT (Listen before talk) before transmitting a signal by using the resource; and a transmission unit configured to transmit the signal to another communication device by using the resource in a case where the reception unit succeeds in the LBT, wherein the transmission unit determines transmission beamforming to be applied upon transmitting the signal, based on reception beamforming applied to the LBT by the reception unit.Type: ApplicationFiled: March 4, 2021Publication date: April 11, 2024Applicant: NTT DOCOMO, INC.Inventors: Shinya Kumagai, Mayuko Okano, Yuki Takahashi, Masaya Okamura, Shohei Yoshioka, Satoshi Nagata
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Publication number: 20240121815Abstract: A communication device includes: a control unit configured to determine a priority to apply to a data signal; and a transmitting unit configured to transmit information that indicates the determined priority, and the data signal to which the determined priority is applied, in autonomously selected resources, to another communication device.Type: ApplicationFiled: March 12, 2021Publication date: April 11, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Shohei Yoshioka, Masaya Okamura, Mayuko Okano, Satoshi Nagata