Patents by Inventor Hiroyuki Motozuka

Hiroyuki Motozuka 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: 10630367
    Abstract: A transmission apparatus includes a signal processing circuit and a transmission circuit. The signal processing circuit generates a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, and generates a second reversed signal by performing an order reversion process on a symbol sequence forming the second precoded signal thereby generating a first transmission signal and a second transmission signal from the first baseband signal and the second baseband signal. The transmission circuit transmits the first transmission signal and the second transmission signal respectively from different antennas.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: April 21, 2020
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Hiroyuki Motozuka, Takenori Sakamoto, Naganori Shirakata
  • Publication number: 20200112469
    Abstract: A transmission apparatus includes a generation circuit that generates a transmission signal in which a plurality of protocol data units in a physical layer are aggregated, an insertion circuit that inserts a preamble into each of a first protocol data unit and a second protocol data unit, where the preamble is used for at least one of synchronization of a transmission channel and estimation of the transmission channel, and a transmission circuit that performs spatial processing on the transmission signal with the preamble inserted and transmits the transmission signal.
    Type: Application
    Filed: December 10, 2019
    Publication date: April 9, 2020
    Inventors: TAKENORI SAKAMOTO, HIROYUKI MOTOZUKA
  • Publication number: 20200112388
    Abstract: A transmission apparatus determines the size of padding data by using the group size of each of a plurality of transmission streams calculated on the basis of a code rate and a modulation scheme that are set for each transmission stream and the number of groups calculated from the size of input transmission data and the group size of the each transmission stream, adds padding data having the determined size to the transmission data, distributes the transmission data and the padding data to generate the plurality of transmission streams, encodes and modulates each of the generated transmission streams with the code rate and the modulation scheme that are set for each transmission stream, converts the modulated transmission streams into radio signals, and transmits the radio signals from a plurality of transmitting antennas.
    Type: Application
    Filed: July 5, 2018
    Publication date: April 9, 2020
    Inventors: HIROYUKI MOTOZUKA, TAKENORI SAKAMOTO
  • Publication number: 20200059387
    Abstract: A transmission device that improves data reception quality includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal from a first baseband signal and a second baseband signal, respectively; a phase changer that applies a phase change of i×?? to the second precoded signal; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. ?? satisfies ?/2 radians<??<? radians or ? radians<??<3?/2 radians. Each of the first baseband signal and the second baseband signal is modulated via a modulation scheme of quadrature amplitude modulation (QAM) using non-uniform mapping.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 20, 2020
    Inventors: Yutaka MURAKAMI, Tomohiro KIMURA, Mikihiro OUCHI, Hiroyuki MOTOZUKA
  • Publication number: 20200036416
    Abstract: A transmission method includes encoding processing that generates an encoded block, modulation processing that generates symbols from the encoded block, phase change processing that changes the phase of the symbols, and transmission processing that arranges the symbols in data carriers and transmits the symbols. The transmission processing configures a frame by arranging symbol groups in order in the frequency direction and transmits the frame. The symbol groups each include a symbol generated from a first encoded block and a symbol generated from a second encoded block. The phase change processing includes changing the phase of symbols the same symbol group using the same phase change value.
    Type: Application
    Filed: October 7, 2019
    Publication date: January 30, 2020
    Inventors: Yutaka MURAKAMI, Tomohiro KIMURA, Mikihiro OUCHI, Hiroyuki MOTOZUKA
  • Publication number: 20190393936
    Abstract: A transmission apparatus includes a precoder that generates a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, an order reverser that generates a reversed signal by reversing an order of a symbol sequence forming the second precoded signal, and a transmitter that transmits the first precoded signal and the reversed signal respectively from different antennas such that each signal is transmitted using a single-carrier.
    Type: Application
    Filed: September 4, 2019
    Publication date: December 26, 2019
    Inventors: Hiroyuki MOTOZUKA, Takenori Sakamoto, Naganori Shirakata
  • Publication number: 20190377058
    Abstract: A wireless communication device for a road side zone includes a wireless communication circuit that forms beams in plural different directions in a time division scheme in an area which includes plural routes. The wireless communication device for a road side zone includes a recording circuit that records time transition in the direction of the beam used by the wireless communication circuit, which forms the beams in the plural different directions in a time division scheme, for wireless communication with a second wireless communication device provided to a mobile apparatus which moves on any of the plural routes.
    Type: Application
    Filed: April 11, 2019
    Publication date: December 12, 2019
    Inventors: KOSEI NAKANO, MASATAKA IRIE, TAKENORI SAKAMOTO, HIROYUKI MOTOZUKA, KAZUAKI TAKAHASHI
  • Patent number: 10484058
    Abstract: A transmission method includes encoding processing that generates an encoded block, modulation processing that generates symbols from the encoded block, phase change processing that changes the phase of the symbols, and transmission processing that arranges the symbols in data carriers and transmits the symbols. The transmission processing configures a frame by arranging symbol groups in order in the frequency direction and transmits the frame. The symbol groups each include a symbol generated from a first encoded block and a symbol generated from a second encoded block. The phase change processing includes changing the phase of symbols the same symbol group using the same phase change value.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: November 19, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi, Hiroyuki Motozuka
  • Publication number: 20190306882
    Abstract: A wireless communication device performs first carrier sensing, regarding part of multiple channels that are candidates for receiving a first signal before reception of the first signal. After having received the first signal, the wireless communication device performs second carrier sensing regarding one or more channels, out of the plurality of channels, that are one or more channels corresponding to the channel information included in the first signal, and where at least the first carrier sensing has not been executed, before reception of data signals by transmission of a second signal.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 3, 2019
    Inventors: YAO HUANG GAIUS WEE, HIROYUKI MOTOZUKA, MASATAKA IRIE, TAKENORI SAKAMOTO
  • Publication number: 20190296996
    Abstract: A method for use of a wireless terminal device includes transmitting a Probe request frame by using a quasi-omni antenna pattern in a first channel if beam-forming training with a wireless base station device is not completed, selecting the wireless base station device as a connection destination if a Probe response frame corresponding to the Probe request frame is received from the wireless base station device, and performing the beam-forming training with the wireless base station device in a second channel if a time period for receiving the Probe response frame from the wireless base station device has passed.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 26, 2019
    Inventors: YAO HUANG GAIUS WEE, HIROYUKI MOTOZUKA, MASATAKA IRIE
  • Publication number: 20190296950
    Abstract: A transmission device that improves data reception quality includes: a first pilot inserter that inserts a pilot signal into a first precoded signal; a phase changer that applies a phase change of i×?? to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. ?? satisfies ?/2 radians <??<? radians or ? radians <??<3?/2 radians. When the communications scheme is an OFDM scheme, the phase changer and the phase changer apply a phase change, and when the communications scheme is a single-carrier scheme, do not apply a phase change.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 26, 2019
    Inventors: Yutaka MURAKAMI, Tomohiro KIMURA, Mikihiro OUCHI, Hiroyuki MOTOZUKA
  • Publication number: 20190280749
    Abstract: A wireless communication apparatus transmits a beacon frame during a beacon transmission interval (BTI), receives a transmission sector sweep (SSW) frame from another wireless communication apparatus, during a beamforming training (BFT) period following the BTI, extracts, in a case where information relating to a discovery request is included in the transmission SSW frame, information relating to a first transmission sector that is selected by the other wireless communication apparatus from among the transmission SSW frames, selects a second transmission sector from transmission sectors used by the other wireless communication apparatus, the transmission sectors being included in the transmission SSW frames, transmits a feedback frame including information regarding the selected second transmission sector, using the first transmission sector during the BFT period, and transmits a probe response frame including information regarding the selected second transmission sector, using the first transmission sector,
    Type: Application
    Filed: May 28, 2019
    Publication date: September 12, 2019
    Inventors: YAO HUANG GAIUS WEE, LEI HUANG, HIROYUKI MOTOZUKA, MASATAKA IRIE
  • Publication number: 20190239287
    Abstract: A transmitting apparatus generates MAC frames and transmits the MAC frames from first to Nth channels. When an allocation involving a plurality of channels includes an nth channel, the apparatus generates the MAC frame including a schedule element of a first type corresponding to an allocation involving a single channel, the schedule element including all scheduling information for the allocation involving the plurality of channels and a schedule element of a second type corresponding to an allocation involving a plurality of channels, the schedule element including difference information indicating the generated first type of schedule element, and when the allocation involving the plurality of channels does not include the nth channel, the apparatus omits the generation of the first type of schedule element and generates the MAC frame including a schedule element of the second type, the schedule element including all information for the allocation involving the plurality of channels.
    Type: Application
    Filed: April 10, 2019
    Publication date: August 1, 2019
    Inventors: LEI HUANG, HIROYUKI MOTOZUKA, YAO HUANG GAIUS WEE, TAKENORI SAKAMOTO
  • Publication number: 20190238200
    Abstract: A transmission apparatus includes a signal processing circuit and a transmission circuit. The signal processing circuit generates a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, and generates a second reversed signal by performing an order reversion process on a symbol sequence forming the second precoded signal thereby generating a first transmission signal and a second transmission signal from the first baseband signal and the second baseband signal. The transmission circuit transmits the first transmission signal and the second transmission signal respectively from different antennas.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: HIROYUKI MOTOZUKA, TAKENORI SAKAMOTO, NAGANORI SHIRAKATA
  • Patent number: 10367563
    Abstract: A base station device includes a frame generator circuitry that generates a first training frame used for receive beam training among frames used for beamforming training, a beam controller circuitry that sets a beam used to transmit the first training frame to an omnidirectional mode, a transmitter circuitry that transmits the first training frame at the lowest MCS rate of IEEE 802.11, a receiver circuitry that receives first and second response frames from a wireless terminal device that has received the first training frame after a determined period since transmission of the first training frame, and a frame determiner circuitry that determines whether the first response frame is a response to the receive beam training. In a case where the first response frame is a response to the receive beam training, the beam controller circuitry sets a beam received by the receiver circuitry to a directional beam, and the receiver circuitry receives the second response frame with a directional beam.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: July 30, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masataka Irie, Naganori Shirakata, Hiroyuki Motozuka, Hiroshi Takahashi
  • Publication number: 20190229796
    Abstract: A non-personal basic service point/access point (PCP/AP) communication device includes a reception circuit that receives a DMG Beacon frame, a judging circuit that judges whether or not to transmit a frame used for beamforming training (BFT), using information relating to reception antenna gain of a PCP/AP communication device included in a DMG Beacon frame and information relating to reception power of a DMG Beacon frame, and a transmission circuit that transmits the frame used for BFT in a case of the judging circuit having judged to transmit the frame used for BFT.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Inventors: YAO HUANG GAIUS WEE, HIROYUKI MOTOZUKA, LEI HUANG, TOMOYA URUSHIHARA, MASATAKA IRIE
  • Publication number: 20190223200
    Abstract: A transmitting apparatus generates at least one of a first type of schedule element supporting an allocation involving a single channel and a second type of schedule element supporting an allocation involving a plurality of channels and transmits a MAC frame including the generated at least one schedule element over a first channel. When the allocation involving the plurality of channels includes the first channel, the transmitting apparatus generates a first type of schedule element including information regarding the allocation involving the plurality of channels and generates the second type of schedule element including difference information, and when the allocation involving the plurality of channels does not include the first channel, the transmitting apparatus omits the generation of the first type of schedule element and generates the second type of schedule element including all the information regarding the allocation involving the plurality of channels.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 18, 2019
    Inventors: LEI HUANG, HIROYUKI MOTOZUKA, YAO HUANG GAIUS WEE, TAKENORI SAKAMOTO
  • Publication number: 20190223253
    Abstract: A communication apparatus includes: a PPDU generation circuit that sets a time equal to or greater than a total of a non-legacy STF, a non-legacy CEF, multiple non-legacy header fields, and multiple data fields as a nominal data field length, computes a nominal data octet size based on the nominal data field length, stores the nominal data octet size in a legacy header, and sets an Additional PPDU field in the legacy header to 0; a signal processing circuit that forms an A-PPDU in the nominal data field length or less; and a transmission circuit that transmits the A-PPDU.
    Type: Application
    Filed: March 27, 2019
    Publication date: July 18, 2019
    Inventors: TAKENORI SAKAMOTO, MASATAKA IRIE, HIROYUKI MOTOZUKA
  • Publication number: 20190182893
    Abstract: In a transmission device, a signal processing circuit generates an aggregate physical layer convergence protocol data unit (A-PPDU) by adding a guard interval to each of a first part of a first physical layer convergence protocol data unit (PPDU) transmitted over each of a first through L'th channel of a predetermined channel bandwidth, where L is an integer of 2 or greater, a second part of the first PPDU transmitted over each of an (L+1)'th through P'th channel, which is a variable channel bandwidth that is N times the predetermined channel bandwidth, where N is an integer of 2 or greater and P is an integer of L+1 or greater, and a second PPDU transmitted over the (L+1)'th through P'th channel. A wireless circuit transmits the A-PPDU.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 13, 2019
    Inventors: TAKENORI SAKAMOTO, HIROYUKI MOTOZUKA, MASATAKA IRIE
  • Publication number: 20190140711
    Abstract: A transmission device that improves data reception quality includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal; a first pilot inserter that inserts a pilot signal into the first precoded signal; a phase changer that applies a phase change of i×?? to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the phase-changed second precoded signal; and a phase changer that applies a phase change to the phase-changed and pilot-signal-inserted second precoded signal. ?? satisfies ?/2 radians<??<? radians or ? radians<??<3?/2 radians.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Inventors: Yutaka MURAKAMI, Tomohiro KIMURA, Mikihiro OUCHI, Hiroyuki MOTOZUKA