Patents by Inventor Shigeru Uchida

Shigeru Uchida 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).

  • Patent number: 11303406
    Abstract: The base station allocates, to one terminal, at least one transmission layer and allocates at least one resource block that is a minimum allocation unit of a communication resource in each transmission layer, to transmit a signal to the terminal, and includes processing units each associated with one of the transmission layers, the processing units being equal in number to the transmission layers. Each processing unit includes a reference signal generation unit to generate a reference signal to be used by the terminal in demodulation processing on a received signal, and an information processing unit to determine an arrangement of the resource block in which to transmit the reference signal to the terminal, based on at least one of a state of a channel between the base station and the terminal or information on the resource block to be used in transmission of the reference signal in an adjacent cell.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: April 12, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fumihiro Hasegawa, Akinori Taira, Hiroki Iura, Shigeru Uchida, Mitsuru Mochizuki, Tadahiro Shimoda
  • Patent number: 11196459
    Abstract: A reception device includes an equalization processing unit including a linear filter unit and a nonlinear filter unit and performing equalization process on a reception signal; a linear propagation channel estimation unit making propagation channel estimation using a known signal included in a reception signal to calculate a filter coefficient of the linear filter unit; and a synchronization processing unit performing synchronization process of correcting frequency deviation based on a signal output by the equalization processing unit, and when a predetermined condition is satisfied after executing first equalization process of outputting a reception signal filtered by the linear filter unit to the synchronization processing unit, the equalization processing unit starts second equalization process that is an adaptive equalization process of outputting a result of addition of a reception signal filtered by the linear filter unit and a reception signal filtered by the nonlinear filter unit to the synchronizati
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: December 7, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasunori Noda, Shunsuke Uehashi, Katsuyuki Motoyoshi, Shigeru Uchida
  • Patent number: 11184137
    Abstract: A lower base station according to the present invention includes: a CSI acquisition unit that acquires channel information indicating a channel state between the lower base station and one or more mobile terminals; a lower scheduler unit that transmits the channel information to a higher base station, and determines the number of signal streams and a modulation and coding scheme for a destination terminal that is a mobile terminal selected from among the one or more mobile terminals, based on the destination terminal and a data transmission rate for the destination terminal, sent for notification by the higher base station; and an MU-MIMO signal processing unit that performs Multi User-Multiple Input Multiple Output precoding for the mobile terminal.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: November 23, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroshi Nishimoto, Akinori Taira, Shigeru Uchida
  • Publication number: 20210135805
    Abstract: A base station includes: a control unit that allocates one or more layers per terminal for transmission to one or more terminals, and configures positions in a frequency domain and a time domain of reference signals of each of the layers on the basis of at least one of information indicating a position of each of the terminals and information indicating condition of each of channel between the transmission device and the one or more terminals; a processing unit that arranges the reference signals of each of the layers in the frequency domain and the time domain on the basis of the positions in the frequency domain and the time domain configured by the control unit; and a precoding unit and a transmitting unit that perform space-division multiplexing on signals of one or more layers arranged by the processing unit, and transmit the multiplexed signals.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fumihiro HASEGAWA, Akinori TAIRA, Shigeru UCHIDA, Noriyuki FUKUI, Akihiro OKAZAKI, Hiroki IURA
  • Publication number: 20210126757
    Abstract: A lower base station according to the present invention includes: a CSI acquisition unit that acquires channel information indicating a channel state between the lower base station and one or more mobile terminals; a lower scheduler unit that transmits the channel information to a higher base station, and determines the number of signal streams and a modulation and coding scheme for a destination terminal that is a mobile terminal selected from among the one or more mobile terminals, based on the destination terminal and a data transmission rate for the destination terminal, sent for notification by the higher base station; and an MU-MIMO signal processing unit that performs Multi User-Multiple Input Multiple Output precoding for the mobile terminal.
    Type: Application
    Filed: June 27, 2017
    Publication date: April 29, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroshi NISHIMOTO, Akinori TAIRA, Shigeru UCHIDA
  • Publication number: 20210083731
    Abstract: A base station device that forms a plurality of beams TB necessary for covering the entire service area and transmits a communication signal in a time-division manner with each of the plurality of beams TB, and a terminal device that receives the beams TB emitted from the base station device are included. Communication from the base station device to the terminal device is performed with a beam-forming technique. The terminal device compares the received power value of the communication signal in each of the plurality of beams TB received from the base station device with the terminal allowable power value of the terminal device, and, on the basis of the comparison result, transmits a specific signal for selecting a beam TB from the plurality of beams TB to the base station device.
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hideyuki NAKAMIZO, Kenichi TAJIMA, Akihiro OKAZAKI, Shigeru UCHIDA, Noriyuki FUKUI
  • Publication number: 20210067223
    Abstract: A radio communication device includes: a transmission/reception unit capable of spatially multiplexing signals to be transmitted to a plurality of counterpart devices with one frequency, and transmitting the signals at the same time, by using a hybrid beamforming method combining analog beamforming and digital precoding, the counterpart devices being counterpart radio communication devices; and a control unit to determine a number of transmission array(s) to be allocated to each of the counterpart devices and a number of transmission(s) of reference signal(s) to be transmitted to each of the counterpart devices on the basis of channel state information fed back from each of the counterpart devices.
    Type: Application
    Filed: November 12, 2020
    Publication date: March 4, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Shigeru UCHIDA
  • Patent number: 10931413
    Abstract: A base station (1) according to the present invention includes: a control unit (10) that allocates one or more layers per terminal for transmission to one or more terminals, and configures positions in a frequency domain and a time domain of reference signals of each of the layers on the basis of at least one of information indicating a position of each of the terminals and information indicating condition of each of channel between the transmission device and the one or more terminals; a processing unit (12-1 to 12-N) that arranges the reference signals of each of the layers in the frequency domain and the time domain on the basis of the positions in the frequency domain and the time domain configured by the control unit (10); and a precoding unit (13) and a transmitting unit (14) that perform space-division multiplexing on signals of one or more layers arranged by the processing unit (12-1 to 12-N), and transmit the multiplexed signals.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 23, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fumihiro Hasegawa, Akinori Taira, Shigeru Uchida, Noriyuki Fukui, Akihiro Okazaki, Hiroki Iura
  • Publication number: 20210050883
    Abstract: A reception device includes an equalization processing unit including a linear filter unit and a nonlinear filter unit and performing equalization process on a reception signal; a linear propagation channel estimation unit making propagation channel estimation using a known signal included in a reception signal to calculate a filter coefficient of the linear filter unit; and a synchronization processing unit performing synchronization process of correcting frequency deviation based on a signal output by the equalization processing unit, and when a predetermined condition is satisfied after executing first equalization process of outputting a reception signal filtered by the linear filter unit to the synchronization processing unit, the equalization processing unit starts second equalization process that is an adaptive equalization process of outputting a result of addition of a reception signal filtered by the linear filter unit and a reception signal filtered by the nonlinear filter unit to the synchronizati
    Type: Application
    Filed: November 2, 2018
    Publication date: February 18, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yasunori NODA, Shunsuke UEHASHI, Katsuyuki MOTOYOSHI, Shigeru UCHIDA
  • Patent number: 10886980
    Abstract: A wireless communication apparatus includes a primary selection unit that selects a plurality of candidate terminals from among a plurality of terminals, based on signal-to-interference noise ratios of signals received from the plurality of terminals, a secondary selection unit that selects a plurality of transmission destination terminals from among the plurality of candidate terminals, based on channel estimate values of the candidate terminals, and a transmission processing unit that spatially multiplexes signals to be transmitted to the plurality of transmission destination terminals selected by the secondary selection unit, simultaneously on the same frequency.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 5, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Shigeru Uchida
  • Patent number: 10710153
    Abstract: Provided is a method for filling a stem-side hollow area of an engine valve with metallic sodium. The method includes injecting melted metallic sodium into a cylinder having a larger diameter than an inner diameter of the hollow area of the engine valve, forming a solidified metallic sodium rod having a substantially uniform structure in the cylinder, inserting the metallic sodium into the hollow area of the engine valve through a nozzle having a small diameter, and sealing the engine valve.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: July 14, 2020
    Assignees: NITTAN VALVE CO., LTD., SUKEGAWA ELECTRIC CO., LTD.
    Inventors: Shigeru Uchida, Ryo Onose, Koichi Homma, Kuniaki Miura, Masashige Hanawa
  • Publication number: 20200052840
    Abstract: The base station allocates, to one terminal, at least one transmission layer and allocates at least one resource block that is a minimum allocation unit of a communication resource in each transmission layer, to transmit a signal to the terminal, and includes processing units each associated with one of the transmission layers, the processing units being equal in number to the transmission layers. Each processing unit includes a reference signal generation unit to generate a reference signal to be used by the terminal in demodulation processing on a received signal, and an information processing unit to determine an arrangement of the resource block in which to transmit the reference signal to the terminal, based on at least one of a state of a channel between the base station and the terminal or information on the resource block to be used in transmission of the reference signal in an adjacent cell.
    Type: Application
    Filed: April 27, 2017
    Publication date: February 13, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Fumihiro HASEGAWA, Akinori TAIRA, Hiroki IURA, Shigeru UCHIDA, Mitsuru MOCHIZUKI, Tadahiro SHIMODA
  • Publication number: 20190393999
    Abstract: A base station includes: a control unit that allocates one or more layers per terminal for transmission to one or more terminals, and configures positions in a frequency domain and a time domain of reference signals of each of the layers on the basis of at least one of information indicating a position of each of the terminals and information indicating condition of each of channel between the transmission device and the one or more terminals; a processing unit that arranges the reference signals of each of the layers in the frequency domain and the time domain on the basis of the positions in the frequency domain and the time domain configured by the control unit; and a precoding unit and a transmitting unit that perform space-division multiplexing on signals of one or more layers arranged by the processing unit, and transmit the multiplexed signals.
    Type: Application
    Filed: December 7, 2016
    Publication date: December 26, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fumihiro HASEGAWA, Akinori TAIRA, Shigeru UCHIDA, Noriyuki FUKUI, Akihiro OKAZAKI, Hiroki IURA
  • Publication number: 20190386716
    Abstract: A wireless communication apparatus includes a primary selection unit that selects a plurality of candidate terminals from among a plurality of terminals, based on signal-to-interference noise ratios of signals received from the plurality of terminals, a secondary selection unit that selects a plurality of transmission destination terminals from among the plurality of candidate terminals, based on channel estimate values of the candidate terminals, and a transmission processing unit that spatially multiplexes signals to be transmitted to the plurality of transmission destination terminals selected by the secondary selection unit, simultaneously on the same frequency.
    Type: Application
    Filed: March 8, 2017
    Publication date: December 19, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventor: Shigeru UCHIDA
  • Patent number: 10473622
    Abstract: Provided is a method for flaw inspection of a stem joint of a valve including: an internal flaw inspection step including causing a flaw detection probe to be disposed so as to face upward in water in a tank in an ultrasonic inspection chamber, holding a valve in such fashion as to cause the tip to face the flaw detection probe, and inspecting for a flaw at the interior of the stem joint; and a surface flaw inspection step including causing a flaw detection probe to be disposed horizontally in an eddy-current inspection chamber, holding a valve in such fashion as to cause the side face of a stem of the valve to be close to and facing the flaw detection probe, inspecting for a flaw on the surface of the stem joint while the flaw detection probe and the valve are made to engage in mutual rotation.
    Type: Grant
    Filed: February 3, 2018
    Date of Patent: November 12, 2019
    Assignee: Nittan Valve Co., Ltd.
    Inventors: Yuichi Abe, Shigeru Uchida, Osamu Takahashi
  • Patent number: 10381723
    Abstract: A wireless communication apparatus, for example a wireless base station that spatially multiplexes data for transmission, includes plural array antennas and a beam shape controller that controls the array antennas to form beams of different shapes and each transmit signals for communication quality measurement in an area to be covered by the apparatus, and determines an initial value of a beam shape to be used in data transmission to a counterpart device that has received the signal for communication quality measurement, and after the initial value is determined, repeatedly executes processing to control the array antennas to tentatively change a beam shape in use in data transmission to the counterpart device, and redetermine a beam shape to be used in data transmission to the counterpart device, based on communication quality measured when the post-tentative-change beam shape is used and communication quality measured when the pre-tentative-change beam shape is used.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: August 13, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shigeru Uchida, Akihiro Okazaki, Akinori Taira
  • Patent number: D879485
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: March 31, 2020
    Assignee: Adrian.Uchida Company Ltd.
    Inventor: Shigeru Uchida
  • Patent number: D894618
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: September 1, 2020
    Assignee: Adrian.Uchida Company Ltd.
    Inventor: Shigeru Uchida
  • Patent number: D904092
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: December 8, 2020
    Assignee: Adrian.Uchida Company Ltd.
    Inventor: Shigeru Uchida
  • Patent number: D906743
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: January 5, 2021
    Assignee: Adrian.Uchida Company Ltd.
    Inventor: Shigeru Uchida