Patents by Inventor Hiromichi Tomeba

Hiromichi Tomeba 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: 20210235498
    Abstract: A CCA level is made to be variable efficiently while maintaining the fairness relating to acquisition of a transmission opportunity by wireless terminal apparatuses, and thus efficiency of a radio resource is improved. Provided is a terminal apparatus that performs wireless communication with a base station apparatus, and includes; a MAC frame categorization unit categorizing MAC frames, in each of which media access control header is attached to transmission data, based on a type of MAC frame; and a QoS control unit performing a carrier sense using a first CCA level, in a case where the MAC frame is included in a first category that results from the categorization by the MAC frame categorization unit, and performing the carrier sense using a second CCA level different from the first CCA level, in a case where the MAC frame is included in a second category different from the first category.
    Type: Application
    Filed: April 12, 2021
    Publication date: July 29, 2021
    Inventors: TOMOKI YOSHIMURA, HIROMICHI TOMEBA, TAKASHI ONODERA
  • Patent number: 11057847
    Abstract: Provided is a base station apparatus, a terminal apparatus, and a communication method, capable of improving communication performance such as throughput and communication efficiency in a system using a plurality of frame formats. A terminal apparatus according to the present invention, includes a reception unit to receive information indicating at least one frame structure out of a plurality of frame structures from the base station apparatus, a control unit to perform a transmit power control associated with the frame structure, and a transmission unit to generate a transmit signal based on the frame structure and the transmit power control and transmit the transmit signal to the base station apparatus.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: July 6, 2021
    Assignees: SHARP KABUSHIKI KAISHA, FG Innovation Company Limited
    Inventors: Hiromichi Tomeba, Ryota Yamada
  • Publication number: 20210203388
    Abstract: Provided are a base station apparatus, a terminal apparatus, and a communication method that allows throughput to be improved in a case of using a large number of antennas. The base station of the present invention includes a transmitter configured to transmit a channel state information reference signal (CSI-RS) and configuration information of the CSI-RS to a terminal apparatus, and a receiving unit configured to receive the channel state information (CSI) related to the CSI-RS from the terminal apparatus, wherein the CSI-RS is a periodic CSI-RS transmitted periodically or an aperiodic CSI-RS transmitted aperiodically, and the configuration information of the CSI-RS includes information indicating a feedback information format for reporting the CSI.
    Type: Application
    Filed: February 28, 2017
    Publication date: July 1, 2021
    Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHA
    Inventors: HIROMICHI TOMEBA, RYOTA YAMADA
  • Patent number: 11038612
    Abstract: A terminal device acquires a parameter indispensable in canceling or suppressing an interference signal, cancels or suppresses interference with high precision, and reduces a degradation in reception performance due to the interference.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: June 15, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kozue Yokomakura, Ryota Yamada, Katsuya Kato, Hiromichi Tomeba
  • Publication number: 20210175937
    Abstract: A base station apparatus, a terminal apparatus, and a communication method are provided in which reliability, frequency efficiency, or throughput can be improved in a case that transmission is performed based on beam forming. For a first CRI indicating a first CSI-RS resource and a second CRI indicating a second CSI-RS resource, the first and second CRIs being simultaneously receivable by the terminal apparatus, a first RI for the first CRI and a second RI for the second CRI are determined, and in a case that a total of the first RI and the second RI is four or less, a CQI determined by using both the first CRI and the second CRI is determined, and in a case that the total of the first RI and the second RI is greater than four, a first CQI determined by using the first CRI and a second CQI determined by using the second CRI are determined.
    Type: Application
    Filed: May 31, 2019
    Publication date: June 10, 2021
    Inventors: RYOTA YAMADA, HIROMICHI TOMEBA
  • Publication number: 20210167922
    Abstract: A base station apparatus includes a downlink reference signal generation unit configured to generate a first demodulation reference signal and a second demodulation reference signal that are reference signals used to demodulate a data signal, and a radio transmitting unit configured to transmit the first demodulation reference signal, the second demodulation reference signal, and control information to the terminal apparatus. The control information includes parameters regarding the first demodulation reference signal and parameters regarding the second demodulation reference signal. The parameters regarding the first demodulation reference signal include an antenna port number. The parameters regarding the second demodulation reference signal include an antenna port number, and a time domain density or a frequency domain density with which demodulation reference signals are mapped into a slot. The first demodulation reference signal is mapped before the second demodulation reference signal in the slot.
    Type: Application
    Filed: February 10, 2021
    Publication date: June 3, 2021
    Inventors: RYOTA YAMADA, Hiromichi Tomeba
  • Publication number: 20210144678
    Abstract: Provided is a terminal apparatus for communicating with a base station apparatus by using a plurality of subcarriers by a grant free access scheme, the terminal apparatus includes: a configuration unit configured to configure the number of the plurality of subcarriers to be used for transmission to the specific number of the plurality of subcarriers less than or equal to the prescribed number of the plurality of subcarriers; and a transmitter configured to transmit, in a prescribed communication band, a transmit signal by using the plurality of subcarriers of the specific number among the plurality of subcarriers of the prescribed number, in which the transmit signal does not include information for indicating the specific number of the plurality of subcarriers, the transmitter performs determination of a frequency in the prescribed communication band to which the plurality of subcarriers of the specific number are allocated, and the determination of the frequency in the prescribed communication band is not c
    Type: Application
    Filed: March 5, 2018
    Publication date: May 13, 2021
    Inventors: HIROMICHI TOMEBA, HIDEO NAMBA, TAKASHI ONODERA, YASUHIRO HAMAGUCHI, FUMIAKI MAEHARA
  • Publication number: 20210144419
    Abstract: The present invention is to improve the user experience with respect to the fact that, in a case that a viewer watches with a large screen ultra high density display apparatus, most of field of view is covered by the video, and consciousness is focused on the center of the field of view, so the recognition capability for each video information in displaying multiple pieces of video information is reduced. Recognition of multiple pieces of video information is enhanced, by providing multiple pieces of video information and acoustic information according to a display apparatus used by a viewer from a network side device, and reproducing the acoustic information using an audio object along with display of the multiple pieces of video information on the display apparatus side.
    Type: Application
    Filed: March 7, 2019
    Publication date: May 13, 2021
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hideo NANBA, Hiromichi TOMEBA
  • Patent number: 11006453
    Abstract: A CCA level is made to be variable efficiently while maintaining the fairness relating to acquisition of a transmission opportunity by wireless terminal apparatuses, and thus efficiency of a radio resource is improved. Provided is a terminal apparatus that performs wireless communication with a base station apparatus, and includes; a MAC frame categorization unit categorizing MAC frames, in each of which media access control header is attached to transmission data, based on a type of MAC frame; and a QoS control unit performing a carrier sense using a first CCA level, in a case where the MAC frame is included in a first category that results from the categorization by the MAC frame categorization unit, and performing the carrier sense using a second CCA level different from the first CCA level, in a case where the MAC frame is included in a second category different from the first category.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 11, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoki Yoshimura, Hiromichi Tomeba, Takashi Onodera
  • Publication number: 20210135810
    Abstract: An apparatus includes: a receiver configured to receive a channel state information reference signal (CSI-RS), downlink control information (DCI), and a downlink shared channel (PDSCH); a measurement unit configured to determine CSI from the CSI-RS, based on CSI configuration information; and a transmitter configured to transmit the CSI, wherein the DCI includes the CSI configuration information, and the CSI configuration information includes information for indicating whether the PDSCH is associated with configuration information for one CSI-RS resource or is associated with configuration information for a plurality of the CSI-RS resources.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 6, 2021
    Inventors: RYOTA YAMADA, HIROMICHI TOMEBA, HIDEO NAMBA, ATSUSHI SHIRAKAWA
  • Publication number: 20210135724
    Abstract: Included are a higher layer processing unit configured to configure a resource configuration for a channel state information reference signal (CSI-RS), a transmitter configured to transmit the CSI-RS to the terminal apparatus, and a receiver configured to receive CSI and CSI configuration information from the terminal apparatus, wherein the resource configuration includes configuration information of multiple CSI-RS resources, the CSI includes at least one CRI for indicating one of the multiple CSI-RS resources, and the CSI configuration information indicates whether the CSI includes one CRI of the at least one CRI or multiple CRIs of the at least one CRI in a case that multiple pieces of configuration information of the multiple CSI-RS resources are configured.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 6, 2021
    Inventors: RYOTA YAMADA, HIROMICHI TOMEBA, HIDEO NAMBA, ATSUSHI SHIRAKAWA
  • Patent number: 10999868
    Abstract: To provide a base station apparatus, a terminal apparatus, and a communication method for achieving a high frequency efficiency while coexisting with other radio access system under environment where multiple frame formats are multiplexed for use. A base station apparatus according to the present invention comprises a receiver that performs carrier sense on the second frequency band based on a predetermined frame configuration among a plurality of frame configurations to obtain the second frequency band during a predetermined duration, and a transmitter that notifies control information concerning the predetermined frame configuration and transmits a downlink signal to the terminal apparatus during the predetermined duration based on the predetermined frame configuration.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 4, 2021
    Assignees: SHARP KABUSHIKI KAISHA, FG Innovation Company Limited
    Inventors: Hiromichi Tomeba, Ryota Yamada
  • Publication number: 20210120435
    Abstract: A base station apparatus, a terminal apparatus, and a communication method are provided that achieve a radio access network in which beam sweeping is appropriately performed in an environment in which a plurality of frame formats are used in a multiplexed fashion. The base station apparatus according to the present invention includes an antenna unit for which a plurality of beam patterns is configurable, a frame configuration unit capable of configuring a plurality of frame configurations; and a beam sweeping unit configured to perform beam sweeping based on a prescribed frame configuration in a case that a frame configuration configured by the frame configuration unit is the prescribed frame configuration.
    Type: Application
    Filed: November 16, 2020
    Publication date: April 22, 2021
    Inventors: HIROMICHI TOMEBA, Ryota Yamada
  • Patent number: 10985822
    Abstract: To provide a base station apparatus, a terminal apparatus and a communication method which enable improvements in throughput and communication quality while suppressing an increase in complexity even in a case that the accuracy of a CSI report is improved.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: April 20, 2021
    Assignees: SHARP KABUSHIKI KAISHA, FG Innovation Company Limited
    Inventors: Hiromichi Tomeba, Ryota Yamada
  • Patent number: 10973042
    Abstract: A method that carries out uplink multiple access while reducing complexity in processing accompanying exchange of control information. A terminal device that performs uplink multiple access communication includes a reception unit that receives a frame including uplink multiple access connection information, a first autonomous decentralized control unit that instructs securing time of a wireless resource, and a second autonomous decentralized control unit that instructs securing time of a wireless resource after reception of a frame including the uplink multiple access connection information. The terminal device is instructed securing time of the wireless resource by the first autonomous decentralized control unit in a case that a frame including the uplink multiple access connection information is not received. Securing time of the wireless resource is instructed by the second autonomous decentralized control unit in a case that a frame including the uplink multiple access connection information is received.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 6, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoki Yoshimura, Hiromichi Tomeba, Yasuhiro Hamaguchi
  • Publication number: 20210091827
    Abstract: In a case that a base station apparatus or a terminal apparatus performs transmission by beamforming and further performs carrier aggregation, Quasi-colocation (QCL) is configured between component carriers. The configured QCL is used for calculating Channel State Information (CSI). Further, the CSI of a component carrier is calculated based on the configuration of QCL between the component carrier and an antenna port. Further, the CSI of the component carrier is calculated based on the number of antenna ports to be used.
    Type: Application
    Filed: November 26, 2018
    Publication date: March 25, 2021
    Inventors: HIDEO NAMBA, RYOTA YAMADA, HIROMICHI TOMEBA, ATSUSHI SHIRAKAWA
  • Publication number: 20210092479
    Abstract: By transmitting region reconstruction information from a network side device to a terminal side device, quality is enhanced in video reconstruction by super resolution techniques or the like. A video is divided into multiple regions, and the region reconstruction information includes video reconstruction information for each of the multiple regions divided. The region reconstruction information is generated based on the classification information associated with the video.
    Type: Application
    Filed: October 30, 2018
    Publication date: March 25, 2021
    Inventors: HIDEO NAMBA, HIROMICHI TOMEBA, TOMOHIRO IKAI, TAKASHI ONODERA, YASUHIRO HAMAGUCHI, NORIO ITOH
  • Publication number: 20210091902
    Abstract: The present invention includes: a receiver configured to receive interference information and a downlink shared channel; and a signal detection unit configured to demodulate the downlink shared channel, wherein the interference information includes demodulation reference signal (DMRS) information and phase tracking reference signal (PTRS) information, and an interference signal is cancelled or suppressed by using the interference information. The DMRS information includes a DMRS port number, and the PTRS information includes the number of PTRS ports and a DMRS port number associated with a PTRS.
    Type: Application
    Filed: November 1, 2018
    Publication date: March 25, 2021
    Inventors: RYOTA YAMADA, HIROMICHI TOMEBA, HIDEO NAMBA, ATSUSHI SHIRAKAWA
  • Publication number: 20210076256
    Abstract: Provided are a radio transmission apparatus, a radio receiving apparatus, a radio communication system, and a communication method that make it possible for the radio transmission apparatus performing OFDMA transmission to highly efficiently determine a radio receiving apparatus that is caused to participate in the OFDMA transmission. The radio transmission apparatus that performs OFDMA transmission with a plurality of radio receiving apparatuses includes a reception unit that has a function of performing carrier sense and a function of receiving a function information response frame including function response information indicating that a function of performing the OFDMA transmission is included, and a transmission unit that has a function of switching whether or not to transmit a frame to at least one of the plurality of radio receiving apparatuses on a basis of the carrier sense.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Inventors: HIROMICHI TOMEBA, TOMOKI YOSHIMURA
  • Publication number: 20210050885
    Abstract: Communication efficiency can be enhanced during multiplex communication. A radio control station apparatus includes a multi-beam antenna unit capable of controlling each of a plurality of beam performances and an RF system for transmission. The RF system further includes a multiplexing unit configured to perform multiplexing by using a plurality of frequency channels or a plurality of sub-carriers, allocates at least one of the plurality of different frequency channels or at least one of the plurality of different sub-carriers to each of transmit signals to be transmitted to the plurality of radio terminal apparatuses, multiplexes the above allocated frequency channels or sub-carriers in the multiplexing unit, and transmits the multiplexed signal through the multi-beam antenna unit using a plurality of beams.
    Type: Application
    Filed: January 18, 2017
    Publication date: February 18, 2021
    Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHA
    Inventors: HIDEO NAMBA, HIROMICHI TOMEBA, YASUHIRO HAMAGUCHI