Patents by Inventor Masahiro Sekiya

Masahiro Sekiya 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: 11153906
    Abstract: According to one embodiment, an electronic apparatus includes a receiver and a transmitter. The receiver is configured to receive, from a first wireless apparatus, a first physical frame including a destination address receivable by a second wireless apparatus different from the electronic apparatus. The transmitter is configured to transmit, to the first wireless apparatus, a first response frame including first information regarding the first physical frame, if the first physical frame is successfully received. A transmission period of the first response frame at least partially overlaps with a transmission period of a second response frame including second information regarding the first physical frame received by the second wireless apparatus.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: October 19, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Narendar Madhavan, Masahiro Sekiya, Toshihisa Nabetani, Kensuke Nakanishi
  • Patent number: 11108399
    Abstract: According to one embodiment, a wireless communication apparatus includes receiver circuitry and transmitter circuitry. The receiver circuitry is configured to receive a first frame addressed to another apparatus, the first frame being transmitted by a first wireless communication apparatus, and estimate a difference between an oscillation frequency of an oscillator of the first wireless communication apparatus and an oscillation frequency of an oscillator of the wireless communication apparatus based on the first frame. The transmitter circuitry is configured to transmit a third frame at a frequency determined based on the difference during a period at least partially overlapping a period during which the first wireless communication apparatus transmits a second frame addressed to a second wireless communication apparatus.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: August 31, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro Sekiya, Toshihisa Nabetani
  • Publication number: 20210226746
    Abstract: According to one embodiment, a wireless communication apparatus includes transmitter circuitry, receiver circuitry and processing circuitry. The processing circuitry is configured to determine, based on a first acknowledgement frame and a second acknowledgement frame, a first data frame received by a first wireless communication apparatus and not received by a second wireless communication apparatus among data frames. The processing circuitry is configured to determine that the transmitter circuitry transmits at least one of the first data frame and a second data frame to the second wireless communication apparatus, and the first wireless communication apparatus transmits the first data frame to the second wireless communication apparatus.
    Type: Application
    Filed: September 10, 2020
    Publication date: July 22, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro SEKIYA, Toshihisa NABETANI, Tatsuma HIRANO, Toshio ARIGA
  • Publication number: 20210127441
    Abstract: According to one embodiment, an electronic apparatus includes a transmitter. The transmitter transmits data to be transmitted to a third wireless communication apparatus and a first wireless signal to instruct transmission of the data to the third wireless communication apparatus, to the first and second wireless communication apparatuses. The transmitter transmits, if any second wireless signal transmitted from the first or second wireless communication apparatuses is not detected within a first period after transmission of the first wireless signal, a third wireless signal to instruct transmission of the data to the third wireless communication apparatus to the first and second wireless communication apparatuses in order to instruct retransmission of the data.
    Type: Application
    Filed: September 1, 2020
    Publication date: April 29, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuma HIRANO, Toshio ARIGA, Masahiro SEKIYA, Toshihisa NABETANI
  • Publication number: 20210111728
    Abstract: According to one embodiment, a wireless communication apparatus includes receiver circuitry and transmitter circuitry. The receiver circuitry is configured to receive a first frame addressed to another apparatus, the first frame being transmitted by a first wireless communication apparatus, and estimate a difference between an oscillation frequency of an oscillator of the first wireless communication apparatus and an oscillation frequency of an oscillator of the wireless communication apparatus based on the first frame. The transmitter circuitry is configured to transmit a third frame at a frequency determined based on the difference during a period at least partially overlapping a period during which the first wireless communication apparatus transmits a second frame addressed to a second wireless communication apparatus.
    Type: Application
    Filed: September 8, 2020
    Publication date: April 15, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro SEKIYA, Toshihisa NABETANI
  • Publication number: 20210067278
    Abstract: According to one embodiment, a wireless communication apparatus includes transmitter circuitry, receiver circuitry and control circuitry. The transmitter circuitry transmits a first frame including first data. The receiver circuitry receives, if the first frame is received by at least a first wireless communication apparatus and a second wireless communication apparatus, a second frame indicating a reception status of the first data by the first wireless communication apparatus and a third frame indicating a reception status of the first data by the second wireless communication apparatus. The control circuitry determines not retransmitting the first data if at least one of the second frame and the third frame indicates that reception has succeeded.
    Type: Application
    Filed: February 28, 2020
    Publication date: March 4, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa NABETANI, Masahiro SEKIYA
  • Patent number: 10887881
    Abstract: According to one embodiment, a wireless communication device includes a transmission circuit and a processing circuit. The transmission circuit is configured to transmit a physical frame including a physical header and a physical payload. The physical header is transmitted in a frequency band. The physical payload includes data and is transmitted by using resource units which are parts of the frequency band. The processing circuit is configured to set a single destination for the data transmitted by a plurality of the resource units and set at least part of the data transmitted by the plurality of the resource units to same data content.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: January 5, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Masahiro Sekiya
  • Patent number: 10833837
    Abstract: According to one embodiment, an electronic apparatus includes a transmitter circuitry and a receiver circuitry. The transmitter circuitry is configured to; transmit a first frame to a first terminal, and transmit a second frame to a second terminal when a first period elapsed after transmission of the first frame. The receiver circuitry is configured to receive a third frame including acknowledgement information of the first frame from the first terminal when the first period elapsed after transmission of the first frame. A duration of the second frame is set as equal to or greater than a difference between a duration of the third frame and a duration of the first frame.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: November 10, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro Sekiya, Toshihisa Nabetani, Narendar Madhavan
  • Publication number: 20200177240
    Abstract: According to one embodiment, an electronic apparatus includes receiver circuitry and transmitter circuitry. The receiver circuitry receives a first association request frame from a first electronic apparatus. The transmitter circuitry transmits a first association response frame corresponding to the first association request frame to the first electronic apparatus, and transmits a second association request frame to the first electronic apparatus, in response to receipt of the first association request frame.
    Type: Application
    Filed: September 3, 2019
    Publication date: June 4, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kensuke NAKANISHI, Tomoko ADACHI, Masahiro SEKIYA
  • Publication number: 20200128584
    Abstract: According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Masahiro SEKIYA, Takeshi TOMIZAWA, Daisuke TAKI, Masaaki IKUTA, Tomoya SUZUKI
  • Publication number: 20200119863
    Abstract: According to one embodiment, an electronic apparatus includes a transmitter circuitry, a receiver circuitry, and a processing circuitry. The transmitter circuitry transmits a first data frame including first data to a destination apparatus. The receiver circuitry receives first acknowledgment information indicative of a reception state of the first data included in the first data frame. The receiver circuitry receives second acknowledgment information indicative of a reception state of the first data included in a second data frame. The second data frame is transmitted from another electronic apparatus to the destination apparatus. The processing circuitry determines whether the first data frame is retransmitted, based on at least one of the first and second acknowledgment information.
    Type: Application
    Filed: August 30, 2019
    Publication date: April 16, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kensuke NAKANISHI, Masahiro SEKIYA, Toshihisa NABETANI, Narendar MADHAVAN
  • Publication number: 20200084772
    Abstract: According to one embodiment, a wireless communication device includes a transmission circuit and a processing circuit. The transmission circuit is configured to transmit a physical frame including a physical header and a physical payload. The physical header is transmitted in a frequency band. The physical payload includes data and is transmitted by using resource units which are parts of the frequency band. The processing circuit is configured to set a single destination for the data transmitted by a plurality of the resource units and set at least part of the data transmitted by the plurality of the resource units to same data content.
    Type: Application
    Filed: March 7, 2019
    Publication date: March 12, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Masahiro SEKIYA
  • Publication number: 20200077441
    Abstract: According to one embodiment, an electronic apparatus includes a receiver and a transmitter. The receiver is configured to receive, from a first wireless apparatus, a first physical frame including a destination address receivable by a second wireless apparatus different from the electronic apparatus. The transmitter is configured to transmit, to the first wireless apparatus, a first response frame including first information regarding the first physical frame, if the first physical frame is successfully received. A transmission period of the first response frame at least partially overlaps with a transmission period of a second response frame including second information regarding the first physical frame received by the second wireless apparatus.
    Type: Application
    Filed: March 5, 2019
    Publication date: March 5, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Narendar MADHAVAN, Masahiro SEKIYA, Toshihisa NABETANI, Kensuke NAKANISHI
  • Patent number: 10523407
    Abstract: According to one embodiment, a wireless communication device includes a receiver and a transmitter. The receiver receives a first frame in a predetermined frequency band. The transmitter transmits a second frame in the predetermined frequency band at a same time as receipt of the first frame. The transmitter transmits control information that controls a transmission timing of a third frame that is a response frame to the second frame. The transmitter transmits a fourth frame that is a response frame to the first frame, at a timing according to the control information.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: December 31, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa Nabetani, Masahiro Sekiya, Narendar Madhavan
  • Patent number: 10524289
    Abstract: According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 31, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Masahiro Sekiya, Takeshi Tomizawa, Daisuke Taki, Masaaki Ikuta, Tomoya Suzuki
  • Publication number: 20190296886
    Abstract: According to one embodiment, an electronic apparatus includes a transmitter circuitry and a receiver circuitry. The transmitter circuitry is configured to; transmit a first frame to a first terminal, and transmit a second frame to a second terminal when a first period elapsed after transmission of the first frame. The receiver circuitry is configured to receive a third frame including acknowledgement information of the first frame from the first terminal when the first period elapsed after transmission of the first frame. A duration of the second frame is set as equal to or greater than a difference between a duration of the third frame and a duration of the first frame.
    Type: Application
    Filed: August 3, 2018
    Publication date: September 26, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro SEKIYA, Toshihisa NABETANI, Narendar MADHAVAN
  • Publication number: 20190089519
    Abstract: According to one embodiment, a wireless communication device includes a receiver and a transmitter. The receiver receives a first frame in a predetermined frequency band. The transmitter transmits a second frame in the predetermined frequency band at a same time as receipt of the first frame. The transmitter transmits control information that controls a transmission timing of a third frame that is a response frame to the second frame. The transmitter transmits a fourth frame that is a response frame to the first frame, at a timing according to the control information.
    Type: Application
    Filed: March 1, 2018
    Publication date: March 21, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa NABETANI, Masahiro SEKIYA, Narendar MADHAVAN
  • Publication number: 20170188390
    Abstract: According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.
    Type: Application
    Filed: September 15, 2016
    Publication date: June 29, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Masahiro SEKIYA, Takeshi TOMIZAWA, Daisuke TAKI, Masaaki IKUTA, Tomoya SUZUKI
  • Publication number: 20160029386
    Abstract: A wireless communication device includes a wireless transmitting/receiving part, a response channel selecting part and an oscillating part. The wireless transmitting/receiving part receives a first frame in which data destined for an address of the wireless communication device and data destined for an address of another wireless communication device are included. The oscillating part outputs a carrier signal having a frequency that corresponds to the response channel selected by the response channel selecting part to the wireless transmitting/receiving part. The response channel selecting part decides an ordinal rank for response channel selection based on the information included in the first frame and selects a response channel that corresponds to the decided ordinal rank The wireless transmitting/receiving part uses the carrier signal to transmit the response frame in the response channel.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 28, 2016
    Inventor: Masahiro Sekiya
  • Publication number: 20160014780
    Abstract: The wireless communication device includes a first wireless unit and a control unit. A channel belonging to a used band of the first wireless communication system is set for the first wireless unit. The control unit operates the wireless communication device as the access point if the first wireless unit receives a standard signal in compliance with a standard of the first wireless communication system.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 14, 2016
    Inventors: Koji Horisaki, Minoru Namekata, Masahiro Sekiya