Patents by Inventor Nobuhisa Aoki

Nobuhisa Aoki 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: 20210378029
    Abstract: A communication device that performs a random access procedure, the communication device includes a transmitter and a controller. The transmitter configured to transmit a first signal in the random access procedure and a second signal which is not a signal of the random access procedure. The controller configured to perform control so that first information included in a first subheader corresponding to the first signal is included in a second subheader corresponding to the second signal and is transmitted.
    Type: Application
    Filed: August 13, 2021
    Publication date: December 2, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Nobuhisa Aoki, YOSHIHIRO KAWASAKI
  • Publication number: 20210337603
    Abstract: A communication device that performs a random access procedure, the communication device including a transmitter and a controller. The transmitter configured to transmit a first signal which is a signal of the random access procedure and a second signal which is not a signal of the random access procedure. The controller configured to incorporate first information to be transmitted by the first signal into the second signal, and control to transmit information related to the second signal.
    Type: Application
    Filed: July 6, 2021
    Publication date: October 28, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Nobuhisa Aoki
  • Publication number: 20210321425
    Abstract: A terminal device includes: a receiver configured to receive a signal including configuration information related to a scheduling request configuration associated with a logical channel; and a controller configured to control a counter associated with the scheduling request configuration. The controller controls, when the receiver receives a signal including configuration information related to a reconfiguration of the scheduling request configuration, the counter in accordance with at least one of the scheduling request configuration after the reconfiguration and a state of the scheduling request.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 14, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, Yoshihiro KAWASAKI, Nobuhisa AOKI
  • Publication number: 20210235315
    Abstract: A terminal device (200) includes a wireless communication unit (210) that receives data transmitted from a base station device (100); a reception buffer (231) that can hold the data received by the wireless communication unit (210); and a transmission control unit (222) that can perform control, in accordance with a status of the reception buffer, such that communication status information indicating a reception status of the data is transmitted to the base station device (100).
    Type: Application
    Filed: April 12, 2021
    Publication date: July 29, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Nobuhisa Aoki
  • Publication number: 20210160920
    Abstract: A base station performing random access procedure, the base station includes a transmitter and a controller. The transmitter configured to transmit a protocol data unit which is a signal of the random access procedure and a second signal different from the first signal which is not signal of the random access procedure, the second signal being a downlink control signal of control plane. The controller configured to perform control such that control information is included in the first signal, the control information being for controlling transmission of the second signal.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 27, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, takayoshi ode, Nobuhisa Aoki
  • Publication number: 20210112566
    Abstract: A mobile station is a mobile station configured to transmit data to a base station by performing priority control, and includes a memory and a processor coupled to the memory and configured to be capable of transmitting a plurality of pieces of data having different requirements corresponding to a plurality of channel groups, and be capable of, when performing the priority control, applying a radio resource specified by the base station to a channel group specified by the base station out of the channel groups and controlling transmission of the data.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Nobuhisa Aoki, KENJI SUDA, Tsuyoshi Shimomura, Hongyang CHEN, Huiting Cheng
  • Publication number: 20210111841
    Abstract: A transmitting device includes: a first layer processor configured to include a buffer to store therein transmission data, the first layer processor configured to execute processing for a first layer on the transmission data; a second layer processor configured to execute processing for a second layer that differs from the first layer on the transmission data; and a transmitter configured to transmit the transmission data processed by the first layer processor and the second layer processor. The first layer processor discards the transmission data stored in the buffer in accordance with a parameter used for transmission control in the processing for the second layer.
    Type: Application
    Filed: December 20, 2020
    Publication date: April 15, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Takayoshi ODE, Yoshihiro Kawasaki, Nobuhisa Aoki
  • Publication number: 20210029578
    Abstract: A wireless terminal for a wireless communication, the wireless terminal includes: a memory that includes a buffer configured to store uplink data, wherein the uplink data is configured to be transmitted; and a controller configured to transmit a buffer status report, the buffer status report including a first index, wherein the first index is one of a plurality of buffer status indices and corresponds to a buffer size indicating a size of the uplink data stored in the buffer, wherein the memory is configured to store a buffer status table in which a range from a minimum value of the buffer to a maximum value of the buffer is divided into a plurality of subranges, the plurality of subranges being associated with a part of the plurality of buffer status indices, and a rest of the plurality of buffer status indices are associated with one or more reserved fields.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 28, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Nobuhisa Aoki
  • Patent number: 10834628
    Abstract: A wireless terminal for a wireless communication, the wireless terminal includes: a memory that includes a buffer configured to store uplink data, wherein the uplink data is configured to be transmitted; and a controller configured to transmit a buffer status report, the buffer status report including a first index, wherein the first index is one of a plurality of buffer status indices and corresponds to a buffer size indicating a size of the uplink data stored in the buffer, wherein the memory is configured to store a buffer status table in which a range from a minimum value of the buffer to a maximum value of the buffer is divided into a plurality of subranges, the plurality of subranges being associated with a part of the plurality of buffer status indices, and a rest of the plurality of buffer status indices are associated with one or more reserved fields.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 10, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshihiro Kawasaki, takayoshi ode, Nobuhisa Aoki
  • Publication number: 20200214080
    Abstract: A method implemented by a transmission apparatus configured to generate a radio signal based on second data obtained by sequentially processing first data addressed to a reception apparatus from an upper layer to a lower layer, the method includes: executing preprocessing configured to start generating the second data before an amount of radio resources to be allocated to the reception apparatus is determined; executing first processing when the amount of radio resources to be allocated to the reception apparatus is determined, the first processing being configured to generate the radio signal based on the second data which has an amount corresponding to the amount to be allocated among the second data generated in the preprocessing; and executing second processing that includes performing control such that the amount of the second data generated from the first data is below a first threshold in the preprocessing.
    Type: Application
    Filed: March 12, 2020
    Publication date: July 2, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Takayoshi Ode, YOSHIHIRO KAWASAKI, Nobuhisa Aoki
  • Publication number: 20190150025
    Abstract: A wireless terminal for a wireless communication, the wireless terminal includes: a memory that includes a buffer configured to store uplink data, wherein the uplink data is configured to be transmitted; and a controller configured to transmit a buffer status report, the buffer status report including a first index, wherein the first index is one of a plurality of buffer status indices and corresponds to a buffer size indicating a size of the uplink data stored in the buffer, wherein the memory is configured to store a buffer status table in which a range from a minimum value of the buffer to a maximum value of the buffer is divided into a plurality of subranges, the plurality of subranges being associated with a part of the plurality of buffer status indices, and a rest of the plurality of buffer status indices are associated with one or more reserved fields.
    Type: Application
    Filed: December 11, 2018
    Publication date: May 16, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, takayoshi ode, Nobuhisa Aoki
  • Publication number: 20180062696
    Abstract: A passive intermodulation (PIM) canceller of a communication device includes a combining unit, a replica generating unit, and a delay measuring instrument. The replica generating unit generates an intermodulation signal based on the amount of delay of each transmission signal. The combining unit cancels out the intermodulation signal from the reception signal using the generated intermodulation signal. The delay measuring instrument delays a transmission signal x2 included in a plurality of transmission signals by different first amounts of delay. The delay measuring instrument generates an intermediate signal Sm1 by multiplying the delayed transmission signal x2 to the reception signal. The delay measuring instrument calculates, based on the correlation values of the intermediate signal Sm1 corresponding to each first amount of delay and a transmission signal x1 included in the plurality of transmission signals, the amount of delay of the transmission signal x1 with respect to the intermodulation signal.
    Type: Application
    Filed: July 12, 2017
    Publication date: March 1, 2018
    Applicant: FUJITSU LIMITED
    Inventors: TOSHIO KAWASAKI, Nobuhisa Aoki, TORU MANIWA, Tadahiro Sato, Yusuke Tobisu, Hiroshi Towata
  • Publication number: 20170207862
    Abstract: A distortion cancellation device includes a first acquiring unit that acquires a plurality of transmission signals that are wirelessly transmitted at different frequencies; a second acquiring unit that acquires a reception signal to which an intermodulation signal generated due to the plurality of the transmission signals is added; and a processor that executes a process including acquiring a gain difference between the plurality of the transmission signals generated when the plurality of the transmission signals acquired by the first acquiring unit is sent to a generation source of the intermodulation signal, generating, by an arithmetic expression using both the acquired gain difference and the plurality of the transmission signals, a cancellation signal associated with the intermodulation signal, and combining the generated cancellation signal with the reception signal acquired by the second acquiring unit.
    Type: Application
    Filed: January 9, 2017
    Publication date: July 20, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Nobuhisa Aoki, TOSHIO KAWASAKI, TORU MANIWA, Tadahiro Sato, Yusuke Tobisu, Hiroshi Towata
  • Publication number: 20170208598
    Abstract: A distortion cancel device includes: a first acquiring unit that acquires a plurality of transmission signals including at least two transmission signals that are wirelessly transmitted at an identical frequency; a second acquiring unit that acquires a reception signal to which an intermodulation signal generated due to the transmission signals is attached; and a processor that executes a process including: determining a ratio of the transmission signals acquired by the first acquiring unit and wirelessly transmitted at the identical frequency; generating a ratio signal for each frequency from the transmission signals in accordance with the determined ratio; generating a cancel signal corresponding to the intermodulation signal by using an arithmetic expression that uses the generated ratio signal; and combining the generated cancel signal with the reception signal acquired by the second acquiring unit.
    Type: Application
    Filed: January 9, 2017
    Publication date: July 20, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Nobuhisa Aoki, TOSHIO KAWASAKI, TORU MANIWA, Tadahiro Sato, Yusuke Tobisu, Hiroshi Towata
  • Publication number: 20170207886
    Abstract: A delay measuring instrument includes a generating unit and a calculating unit. The generating unit is, for example, a multiplier. The calculating unit is, for example, a maximum value detecting unit. The generating unit generates an intermediate signal by multiplying one of transmission signals or the complex conjugate of the one of the transmission signals included in the plurality of transmission signals that are transmitted at different frequencies by a reception signal that includes therein an intermodulation signal generated by the plurality of the transmission signals. The calculating unit calculates, based on a correlation value between the intermediate signal and the other one of the transmission signals included in the plurality of the transmission signals, an amount of delay of the other one of the transmission signals with respect to the intermodulation signal.
    Type: Application
    Filed: December 13, 2016
    Publication date: July 20, 2017
    Inventors: TOSHIO KAWASAKI, Nobuhisa Aoki, TORU MANIWA, Tadahiro Sato, Yusuke Tobisu, Hiroshi Towata
  • Publication number: 20160380668
    Abstract: A communication device includes a sending unit that sends a plurality of signals that are to be wirelessly sent with different frequencies; an acquiring unit that acquires a reception signal to which an intermodulation signal that is produced due to intermodulation of the plurality of signals is added; and a processor that is connected to the sending unit and the acquiring unit. The processor generates, on the basis of the plurality of signals sent by the sending unit, a cancellation signal corresponding to the intermodulation signal and combines the generated cancellation signal with the reception signal acquired by the acquiring unit.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 29, 2016
    Inventors: Nobuhisa AOKI, Toshio KAWASAKI, Toru MANIWA, Tadahiro SATO, Yusuke TOBISU, Akifumi ADACHI, Eizou ISHIZU
  • Patent number: 9503024
    Abstract: An amplifying device includes: a signal splitter configured to split an input signal to a plurality of signals having a phase difference between the plurality of signals fluctuating in accordance with an absolute value of an amplitude of the input signal; a plurality of amplifiers configured to amplify the plurality of signals respectively; a combiner configured to combine the amplified plurality of signals to generate an output signal; a selector configured to select one of output signals whose phase is inverted or non-inverted; and a switch controller configured to control the signal splitter so that phases of the plurality of signals are non-inverted, and to control the selector so that the selector selects one of the output signals, in accordance with a first point of time when the absolute value becomes a minimum or a second point of time deviated from the first point by a predetermined time period.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: November 22, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Nobuhisa Aoki
  • Publication number: 20160181985
    Abstract: An amplifying device includes: a signal splitter configured to split an input signal to a plurality of signals having a phase difference between the plurality of signals fluctuating in accordance with an absolute value of an amplitude of the input signal; a plurality of amplifiers configured to amplify the plurality of signals respectively; a combiner configured to combine the amplified plurality of signals to generate an output signal; a selector configured to select one of output signals whose phase is inverted or non-inverted; and a switch controller configured to control the signal splitter so that phases of the plurality of signals are non-inverted, and to control the selector so that the selector selects one of the output signals, in accordance with a first point of time when the absolute value becomes a minimum or a second point of time deviated from the first point by a predetermined time period.
    Type: Application
    Filed: November 12, 2015
    Publication date: June 23, 2016
    Inventor: Nobuhisa AOKI
  • Patent number: 9319012
    Abstract: An amplifying apparatus, including an amplitude-phase conversion unit to separate an input signal into first and second signals, wherein a phase difference between the first and second signals depends on an amplitude of the input signal, a first amplifying unit, a first matching circuit including a main line and a first harmonic processing circuit, wherein a length of the line of the first harmonic processing circuit short-circuits a harmonic, a second amplifying unit, a second matching circuit including a main line and a second harmonic processing circuit, wherein a length of the line of the second harmonic processing circuit short-circuits a harmonic, and an output synthesis unit to synthesize outputs from the first and second matching circuits, wherein a distance from the first amplifying unit to the first harmonic processing circuit differs from a distance from the second amplifying unit to the second harmonic processing circuit.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: April 19, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Toru Maniwa, Shigekazu Kimura, Nobuhisa Aoki
  • Patent number: 9270235
    Abstract: An amplifier includes: an amplifying device configured to amplify an input signal; and a matching circuit coupled to the amplifying device, and including an impedance transformer and a parallel resonance circuit coupled to a wiring which spans from the impedance transformer to the amplifying device, wherein a circuit length of the impedance transformer is longer than one-fourth of wavelength of an electronic wave having a frequency which is substantially equal to a resonance frequency of the parallel resonance circuit.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: February 23, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Nobuhisa Aoki, Toru Maniwa