Patents by Inventor Shozo Okasaka

Shozo Okasaka 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: 20200389913
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Inventors: Atsushi SUMASU, Shozo OKASAKA, Shinsuke TAKAOKA, Seigo NAKAO, Daichi IMAMURA
  • Patent number: 10855312
    Abstract: A transmission apparatus includes an encoder that codes a data sequence with a parity check matrix, wherein the data sequence includes a final information bit sequence and virtual information bits, and outputs the final information bit sequence and a parity sequence, as LDPC codes, and a transmitter that transmits the LDPC codes as a transmission data. A column length of the parity check matrix is longer than a total length of the final information bit sequence and the parity sequence, by a length of the virtual information bits that are set to “0” and are not transmitted. The total length of the final information bit sequence and the parity sequence has a sequence length corresponding to a length from a first column to a determined column of the parity check matrix. The encoder generates the LDPC codes by using the first column to the determined column among one or more column(s) of the parity check matrix.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: December 1, 2020
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Patent number: 10827449
    Abstract: This invention describes a method to enable simultaneous connections to multiple cellular networks while utilising only a single subscriber identity by assigning a unique mobile equipment identity to each radio connection and an apparatus to enable simultaneous connections to multiple cellular networks while utilising only a single subscriber identity by assigning a unique mobile equipment identity to each radio connection where the user equipment is able to manage the multiple International Mobile Equipment Identifiers assigned by the manufacturer of the mobile device by correctly identifying the connected interface and reporting the correct accompanying mobile equipment identifier.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: November 3, 2020
    Assignee: Panasonic Corporation
    Inventors: Benjamin Tien Ming Koh, Shozo Okasaka
  • Patent number: 10791570
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: September 29, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Atsushi Sumasu, Shozo Okasaka, Shinsuke Takaoka, Seigo Nakao, Daichi Imamura
  • Publication number: 20200162110
    Abstract: A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after being subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
    Type: Application
    Filed: December 23, 2019
    Publication date: May 21, 2020
    Inventors: Yutaka MURAKAMI, Shutai OKAMURA, Masayuki ORIHASHI, Takaaki KISHIGAMI, Shozo OKASAKA
  • Patent number: 10560121
    Abstract: A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after being subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: February 11, 2020
    Assignee: PANASONIC CORPORATION
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Publication number: 20190306822
    Abstract: This invention describes a method to enable simultaneous connections to multiple cellular networks while utilising only a single subscriber identity by assigning a unique mobile equipment identity to each radio connection and an apparatus to enable simultaneous connections to multiple cellular networks while utilising only a single subscriber identity by assigning a unique mobile equipment identity to each radio connection where the user equipment is able to manage the multiple International Mobile Equipment Identifiers assigned by the manufacturer of the mobile device by correctly identifying the connected interface and reporting the correct accompanying mobile equipment identifier.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: Benjamin, Tien Ming KOH, Shozo OKASAKA
  • Publication number: 20190261403
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Inventors: Atsushi SUMASU, Shozo OKASAKA, Shinsuke TAKAOKA, Seigo NAKAO, Daichi IMAMURA
  • Patent number: 10334622
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: June 25, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Atsushi Sumasu, Shozo Okasaka, Shinsuke Takaoka, Seigo Nakao, Daichi Imamura
  • Publication number: 20190149170
    Abstract: A transmission apparatus includes an encoder that codes a data sequence with a parity check matrix, wherein the data sequence includes a final information bit sequence and virtual information bits, and outputs the final information bit sequence and a parity sequence, as LDPC codes, and a transmitter that transmits the LDPC codes as a transmission data. A column length of the parity check matrix is longer than a total length of the final information bit sequence and the parity sequence, by a length of the virtual information bits that are set to “0” and are not transmitted. The total length of the final information bit sequence and the parity sequence has a sequence length corresponding to a length from a first column to a determined column of the parity check matrix. The encoder generates the LDPC codes by using the first column to the determined column among one or more column(s) of the parity check matrix.
    Type: Application
    Filed: January 15, 2019
    Publication date: May 16, 2019
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Patent number: 10263641
    Abstract: A transmission apparatus includes an encoder that codes a data sequence with a parity check matrix, wherein the data sequence includes a final information bit sequence and virtual information bits, and outputs the final information bit sequence and a parity sequence, as LDPC codes, and a transmitter that transmits the LDPC codes as a transmission data. A column length of the parity check matrix is longer than a total length of the final information bit sequence and the parity sequence, by a length of the virtual information bits that are set to “0” and are not transmitted. The total length of the final information bit sequence and the parity sequence has a sequence length corresponding to a length from a first column to a determined column of the parity check matrix. The encoder generates the LDPC codes by using the first column to the determined column among one or more column(s) of the parity check matrix.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: April 16, 2019
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Publication number: 20180323800
    Abstract: A transmission apparatus includes an encoder that codes a data sequence with a parity check matrix, wherein the data sequence includes a final information bit sequence and virtual information bits, and outputs the final information bit sequence and a parity sequence, as LDPC codes, and a transmitter that transmits the LDPC codes as a transmission data. A column length of the parity check matrix is longer than a total length of the final information bit sequence and the parity sequence, by a length of the virtual information bits that are set to “0” and are not transmitted. The total length of the final information bit sequence and the parity sequence has a sequence length corresponding to a length from a first column to a determined column of the parity check matrix. The encoder generates the LDPC codes by using the first column to the determined column among one or more column(s) of the parity check matrix.
    Type: Application
    Filed: June 26, 2018
    Publication date: November 8, 2018
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Publication number: 20180254808
    Abstract: A terminal device includes a communicator that, after first data communication carried out with the use of a narrowly directional first beam, receives, by using a widely directional beam, a plurality of first signals that a base station device has transmitted by using respective narrowly directional beams, and a determination circuitry that calculates the reception quality of the plurality of first signals and determines a narrowly directional second beam that the base station device uses for communication. The communicator transmits a feedback signal including information indicating the second beam to the base station device by using the first beam and starts second data communication by using the first beam in a case in which the communicator has received, by using the first beam, a response indicating that the base station device has received the feedback signal.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 6, 2018
    Inventors: MASASHI KOBAYASHI, KOJI TAKINAMI, SHOZO OKASAKA
  • Patent number: 10038457
    Abstract: A transmission apparatus includes an encoder that codes a data sequence with a parity check matrix, wherein the data sequence includes a final information bit sequence and virtual information bits, and outputs the final information bit sequence and a parity sequence, as LDPC codes, and a transmitter that transmits the LDPC codes as a transmission data. A column length of the parity check matrix is longer than a total length of the final information bit sequence and the parity sequence, by a length of the virtual information bits that are set to “0” and are not transmitted. The total length of the final information bit sequence and the parity sequence has a sequence length corresponding to a length from a first column to a determined column of the parity check matrix. The encoder generates the LDPC codes by using the first column to the determined column among one or more column(s) of the parity check matrix.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 31, 2018
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Publication number: 20180167085
    Abstract: A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after being subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
    Type: Application
    Filed: November 22, 2017
    Publication date: June 14, 2018
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Patent number: 9980206
    Abstract: In order to shorten the time in which an initial connection is established when switching directivity and then performing the initial connection, a frame timing control unit sets, until detection of an RACH signal, a transmission timing of a transmission frame for transmitting a search signal and a broadcast signal and also sets a reception-start timing for starting the reception of the corresponding RACH signal. A search/broadcast signal generation unit generates the broadcast signal and the search signal including reception-timing information. A beam directivity control unit sets, for a predetermined time starting from the reception-start timing, a directivity pattern such that the directivity is in the same direction as the directivity pattern for the corresponding transmission-timing information, whereby the beam directivity control unit controls a beam directivity operation unit.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: May 22, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Shozo Okasaka, Takayuki Sotoyama, Seigo Nakao
  • Publication number: 20180098343
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Application
    Filed: November 21, 2017
    Publication date: April 5, 2018
    Inventors: Atsushi Sumasu, Shozo Okasaka, Shinsuke Takaoka, Seigo Nakao, Daichi Imamura
  • Patent number: 9872310
    Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: January 16, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Atsushi Sumasu, Shozo Okasaka, Shinsuke Takaoka, Seigo Nakao, Daichi Imamura
  • Patent number: 9859921
    Abstract: A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after being subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: January 2, 2018
    Assignee: Panasonic Corporation
    Inventors: Yutaka Murakami, Shutai Okamura, Masayuki Orihashi, Takaaki Kishigami, Shozo Okasaka
  • Publication number: 20170111850
    Abstract: In order to shorten the time in which an initial connection is established when switching directivity and then performing the initial connection, a frame timing control unit sets, until detection of an RACH signal, a transmission timing of a transmission frame for transmitting a search signal and a broadcast signal and also sets a reception-start timing for starting the reception of the corresponding RACH signal. A search/broadcast signal generation unit generates the broadcast signal and the search signal including reception-timing information. A beam directivity control unit sets, for a predetermined time starting from the reception-start timing, a directivity pattern such that the directivity is in the same direction as the directivity pattern for the corresponding transmission-timing information, whereby the beam directivity control unit controls a beam directivity operation unit.
    Type: Application
    Filed: May 30, 2014
    Publication date: April 20, 2017
    Inventors: Shozo OKASAKA, Takayuki SOTOYAMA, Seigo NAKAO