Patents by Inventor Yoshiaki Ohta

Yoshiaki Ohta 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: 11758414
    Abstract: A radio terminal that performs radio communication with a base station, including: a communicator configured to perform radio measurement and monitoring of a paging signal; and a controller configured to control the communicator to receive information related to first duration by Non-Access Stratum (NAS) message from the base station, and not to perform the radio measurement and the monitoring during the first duration but to perform the radio measurement and the monitoring during second duration different from the first duration, wherein the controller is further configured to control the radio measurement and the monitoring by ending the first duration for transmitting uplink data of the radio terminal.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: September 12, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshiharu Tajima, Akira Ito
  • Patent number: 11758431
    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 14, 2022
    Date of Patent: September 12, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshihiro Kawasaki, Takayoshi Ode, Nobuhisa Aoki
  • Publication number: 20230284088
    Abstract: A wireless communication system includes a first wireless communication device, and a second wireless communication device. The first wireless communication device includes: a communicator that delivers, to the second wireless communication device, data addressed to a third wireless communication device and receives, from the second wireless communication device, information on communication quality according to failed data of which delivery fails among the data delivered from the second wireless communication device to the third wireless communication device; and a controller that controls delivery of the data in accordance with the information on the communication quality.
    Type: Application
    Filed: May 15, 2023
    Publication date: September 7, 2023
    Applicant: FUJITSU LIMITED
    Inventor: Yoshiaki Ohta
  • Patent number: 11737128
    Abstract: A communication system includes: a first communication apparatus configured to control a first wireless communication and a second wireless communication different from the first wireless communication; a second communication apparatus configured to communicate using the second communication; and a third communication apparatus configured to perform data communication with the first communication apparatus via the first wireless communication or the second wireless communication, wherein the third communication apparatus transmits to the first communication apparatus a control message that includes an available address of the third wireless communications apparatus used in the second wireless communication, the first communication apparatus notifies the second communication apparatus of the available address of the third communication apparatus, and the second communication apparatus communicate with the third communication apparatus using the address.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: August 22, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
  • Patent number: 11736976
    Abstract: A wireless communication system includes a first wireless communication device, and a second wireless communication device. The first wireless communication device includes: a communicator that delivers, to the second wireless communication device, data addressed to a third wireless communication device and receives, from the second wireless communication device, information on communication quality according to failed data of which delivery fails among the data delivered from the second wireless communication device to the third wireless communication device; and a controller that controls delivery of the data in accordance with the information on the communication quality.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: August 22, 2023
    Assignee: FUJITSU LIMITED
    Inventor: Yoshiaki Ohta
  • Patent number: 11700631
    Abstract: A wireless communication device that transmits data to another wireless communication device that performs wireless connection using a packet including a transmission number, the wireless communication device includes, a controller configured to classify the data as first data when a transmission condition indicating a condition related to transmission of the data is a first transmission condition and classifies the data as second data when the transmission condition of the data is a second transmission condition different from the first transmission condition, and a transmitter configured to transmit the data in a first transmission mode in a layer related to the wireless connection when the data is the first data and transmits the data in a second transmission mode in a layer related to the wireless connection when the second data is second data.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: July 11, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Takayoshi Ode, Shinichiro Aikawa, Yoshihiro Kawasaki
  • Patent number: 11696175
    Abstract: A base station device includes, a transmitter that transmits first data of a first type and second data of a second type, and a controller that is able to omit, when the transmitter multiplexes the first data and the second data together and transmits the first data and the second data multiplexed together, at least a portion of a segmentation offset or at least a portion of a reserve bit included in an RLC header of the second data.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 4, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Takayoshi Ode, Yoshihiro Kawasaki
  • Patent number: 11690092
    Abstract: A wireless communications system includes a first wireless-communications-apparatus that controls a second wireless-communication by a controller for a first wireless-communication; a second wireless-communications-apparatus capable of the second wireless-communication; and a third wireless-communications-apparatus capable of data transmission with the first wireless-communications-apparatus via the first or second wireless-communication, and that transmits to the first wireless-communications-apparatus, a control message including an address thereof for the second wireless-communication.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: June 27, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode, Junichi Suga, Ryuichi Takechi
  • Patent number: 11677669
    Abstract: A communication device includes, a controller that executes control to receive a data transmission packet from another communication device, create a reception confirmation packet indicating reception of the data transmission packet, and store the created reception confirmation packet in a transmission buffer, and a transmitter that transmits a part of reception confirmation packets stored in the transmission buffer to the other communication device but does not transmit reception confirmation packets other than the transmitted reception confirmation packet to the other communication device.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 13, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshihiro Kawasaki, Takayoshi Ode, Michiharu Nakamura
  • Patent number: 11653356
    Abstract: A wireless communications system includes a base station; and a wireless station. The base station reserves, in advance, a radio parameter that includes at least any one among a frequency resource and communication method used in transmission of uplink data by a first control signal transmitted to the wireless station and upon receiving a second control signal from the wireless station, provides authorization for the transmission of uplink data, by transmitting a third control signal to the wireless station. The wireless station, upon transmitting the second control signal to the base station, uses the radio parameter configured by the first control signal received from the base station to perform transmission of the uplink data to the base station.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 16, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Akira Ito
  • Patent number: 11653280
    Abstract: A wireless apparatus, which is used as a first wireless apparatus in a wireless system that includes the first wireless apparatus and a plurality of second wireless apparatuses, includes: a communication circuit for receiving a result of measurement of a first channel from each of the plurality of second wireless apparatuses that communicate with each other via the first channel; and a control circuit for executing a first process when the result of the measurement is lower than a predetermined quality, wherein the first process causes the communication circuit to transmit a switching instruction to each of the plurality of second wireless apparatuses, to establish a second channel between the wireless apparatus and each of the plurality of second wireless apparatuses, and to switch wireless communication between each of the plurality of second wireless apparatuses via the first channel to wireless communication via the second channel.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: May 16, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode
  • Publication number: 20230113426
    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 14, 2022
    Publication date: April 13, 2023
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Nobuhisa Aoki
  • Publication number: 20230103547
    Abstract: A communication device includes, a communicator configured to include a first wireless communication layer and a second wireless communication layer, with the second wireless communication layer having a first link layer protocol or a second link layer protocol, which is a radio link protocol, and perform radio communication with another communication device via the first wireless communication layer, and a controller configured to control communication in transmission and reception of data of the second wireless communication layer by performing control on the data in accordance with whether a radio link protocol of the second wireless communication layer corresponds to the first link layer protocol or the second link layer protocol so that the transmission and reception of the data is performed.
    Type: Application
    Filed: December 7, 2022
    Publication date: April 6, 2023
    Applicant: FUJITSU LIMITED
    Inventor: Yoshiaki OHTA
  • Publication number: 20230097492
    Abstract: A communication device includes, a first wireless communication layer and a second wireless communication layer, each of the first wireless communication layer and the second wireless communication layer being compliant with a first communication standard and a second communication standard, a controller that selects respective communication standards for the first wireless communication layer and the second wireless communication layer on the basis of communication standards of the first wireless communication layer and the second wireless communication layer, with each of which the other communication device is compliant.
    Type: Application
    Filed: December 8, 2022
    Publication date: March 30, 2023
    Applicant: FUJITSU LIMITED
    Inventor: Yoshiaki OHTA
  • Publication number: 20230082263
    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: November 22, 2022
    Publication date: March 16, 2023
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Takayoshi ODE, YOSHIHIRO KAWASAKI, Nobuhisa AOKI
  • Publication number: 20230082591
    Abstract: A radio station includes, a controller configured to configure a bundled channel which is a channel group obtained by bundling a plurality of channels and first information related to the bundled channel, and perform control to generate a transmission opportunity for a second signal that requests an uplink resource for a first signal, according to an amount of data in the bundled channel and the first information, and a communicator configured to transmit the second signal to another radio station according to the transmission opportunity for the second signal, and receives a radio resource from the other radio station.
    Type: Application
    Filed: November 22, 2022
    Publication date: March 16, 2023
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, YOSHIHIRO KAWASAKI, Tetsuya YANO, Ryosuke Kobayashi
  • Patent number: 11601842
    Abstract: A communication device includes a receiver , a transmitter that executes first transmission processing and second transmission processing , and a controller that controls the transmitter in accordance with a radio quality of wireless communication so that either the first transmission processing or the second transmission processing is executed.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 7, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Yoshihiro Kawasaki, Takayoshi Ode, Michiharu Nakamura
  • Patent number: 11589408
    Abstract: A mobile station including: a communication unit that includes a first logical processing subject and a second logical processing subject that operates in association with the first logical processing subject and performs multiple communications with a first wireless communication apparatus and a second wireless communication apparatus; an accumulation unit that accumulates data received from the second wireless communication apparatus; and a notifying unit that notifies the first wireless communication apparatus of data receiving status in the accumulation unit.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: February 21, 2023
    Assignee: FUJITSU CONNECTED TECHNOLOGIES LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa
  • Publication number: 20230052566
    Abstract: A base station includes a memory and a processor coupled to the memory and configured to transmit, when a state transition of a mobile station is performed, a first control signal to the mobile station, and perform control to simultaneously transmit the first control signal and a second control signal different from the first control signal to the mobile station when a first state transition, which causes a state of the mobile station to transfer from a first state to a second state, is performed, and then a second state transition, which causes the state of the mobile station to transfer from the second state to a third state, is performed.
    Type: Application
    Filed: November 2, 2022
    Publication date: February 16, 2023
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, YOSHIHIRO KAWASAKI, Takayoshi ODE, Jianming WU
  • Publication number: 20230027699
    Abstract: A transmission device includes a communication circuit configured to wirelessly communicate with a reception device, by using a plurality of wireless services including a first wireless service having a first priority and a second wireless service having a second priority that is a priority lower than the first priority, and a processing circuit configured to perform, in accordance with a first information element, allocating of an uplink radio resource to transmission data of the first wireless service, the allocating of the uplink radio resource being performed in a situation, the situation being a situation that a medium access control-protocol data unit (MAC-PDU) has been generated or can be generated in response to allocating the uplink radio resource to a transmission data of the second wireless service, the first information element indicating a value configured to control logical channel prioritization (LCP) procedure.
    Type: Application
    Filed: October 5, 2022
    Publication date: January 26, 2023
    Applicant: FUJITSU LIMITED
    Inventor: Yoshiaki OHTA