Patents by Inventor Michiharu Nakamura

Michiharu Nakamura 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: 11153031
    Abstract: A base station device includes: a memory; and a processor coupled to the memory and configured to execute a first generation processing that includes generating a first control channel to be placed in a sub-frame at a predetermined cycle, the first control channel including designation information indicating at least one sub-frame in the predetermined cycle, execute a second generation processing that includes generating a second control channel to be placed in a sub-frame indicated by the designation information in the first control channel, the second control channel including control information for controlling communication, and execute a transmission processing that includes transmitting a sub-frame in which the first control channel is placed and a sub-frame in which the second control channel is placed.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: October 19, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuya Yano, Michiharu Nakamura
  • Patent number: 11147082
    Abstract: A radio base station includes: a radio communicator configured to perform radio communication; and a first controller that includes a first scheduler configured to perform a first scheduling that is at least a first part of a scheduling for the radio communication; and a second controller that is coupled to the first controller via a network, wherein the second controller comprises a second scheduler configured to perform a second scheduling that is at least a second part of the scheduling for the radio communication.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 12, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Yoshihiro Kawasaki, Shinichiro Aikawa, Yoshiaki Ohta, Michiharu Nakamura
  • Publication number: 20210058200
    Abstract: A base station device that communicates with a terminal device in a wireless manner, the base station device includes, a controller configured to determine an accumulation number which is a number of reception confirmation packets that are able to be accumulated in the terminal device and correspond to packets received from the base station device, in accordance with an amount of data transmitted by the terminal device, and a transmitter configured to transmit a control signal including the determined accumulation number to the terminal device.
    Type: Application
    Filed: November 3, 2020
    Publication date: February 25, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki OHTA, Yoshihiro KAWASAKI, Takayoshi ODE, Michiharu NAKAMURA
  • Publication number: 20200154478
    Abstract: A wireless communications system includes a base station; and a terminal; wherein the base station includes a transmitter configured to transmit to the terminal using a physical downlink control channel, information used for assignment of first candidate and second candidate of a utilization resource in an unlicensed band for transmitting a wireless signal; and a receiver configured to receive the wireless signal from the terminal; and the terminal includes a receiver configured to receive the information; and a transmitter configured to transmit the wireless signal to the base station using the first candidate when the first candidate is idle, or using the second candidate when the first candidate is not idle and the second candidate is idle; and wherein the assignment of the first candidate and the second candidate by the base station is performed by allocating a plurality of subframes.
    Type: Application
    Filed: January 13, 2020
    Publication date: May 14, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya YANO, Yoshinori TANAKA, Michiharu NAKAMURA
  • Patent number: 10568137
    Abstract: A wireless communications system includes a first communications apparatus configured to use a predetermined band shared with a second wireless communications system and receive a wireless signal from a second communications apparatus; and the second communications apparatus. The first communications apparatus is further configured to assign to the second communications apparatus, a first candidate and a second candidate for a utilization resource in the predetermined band. The second communications apparatus is configured to perform radio resource idle state detection based on a result of assignment of the first candidate and the second candidate. The second communications apparatus is further configured to use the first candidate and transmit the wireless signal to the first communications apparatus when the first candidate is idle, and to use the second candidate and transmit the wireless signal to the first communications apparatus, when the first candidate is not idle and the second candidate is idle.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: February 18, 2020
    Assignee: Fujitsu Limited
    Inventors: Tetsuya Yano, Yoshinori Tanaka, Michiharu Nakamura
  • Patent number: 10433322
    Abstract: A wireless device is used in a wireless communication system that includes a base station for controlling communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted. The wireless device includes: a request transmitter that transmits a request for performing D2D (device-to-device) communication to the base station; a receiver that receives position information to indicate a position at which a blank subframe is allocated in the time division duplex frame from the base station; and a scheduler that determines a schedule for D2D communication based on the position information and reports the schedule to a corresponding wireless device. The blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: October 1, 2019
    Assignee: Fujitsu Limited
    Inventors: Hongyang Chen, Michiharu Nakamura, Chenxi Zhu
  • Publication number: 20190132854
    Abstract: A wireless communication system includes: a base station configured to set a first radio resource which is used for transfer of a first data signal, and a second radio resource of which at least a portion overlaps the first radio resource, the second radio resource having a likelihood of being used for transfer of a second data signal, to be in a radio frame format; a first terminal configured to transmit the second data signal to a destination that is the base station, using the second radio resource; and a second terminal configured to, when it is detected that a portion of the first radio source that is allocated from the base station, which overlaps the second radio resource, is used for the transmission of the second data signal, does not perform transmission of the first data signal, which uses the overlapping portion.
    Type: Application
    Filed: December 27, 2018
    Publication date: May 2, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Michiharu Nakamura, Tsuyoshi Shimomura
  • Publication number: 20190075577
    Abstract: A radio base station includes: a radio communicator configured to perform radio communication; and a first controller that includes a first scheduler configured to perform a first scheduling that is at least a first part of a scheduling for the radio communication; and a second controller that is coupled to the first controller via a network, wherein the second controller comprises a second scheduler configured to perform a second scheduling that is at least a second part of the scheduling for the radio communication.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 7, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Takayoshi ODE, Yoshihiro KAWASAKI, SHINICHIRO AIKAWA, Yoshiaki OHTA, Michiharu NAKAMURA
  • Publication number: 20190013893
    Abstract: A base station device includes: a memory; and a processor coupled to the memory and configured to execute a first generation processing that includes generating a first control channel to be placed in a sub-frame at a predetermined cycle, the first control channel including designation information indicating at least one sub-frame in the predetermined cycle, execute a second generation processing that includes generating a second control channel to be placed in a sub-frame indicated by the designation information in the first control channel, the second control channel including control information for controlling communication, and execute a transmission processing that includes transmitting a sub-frame in which the first control channel is placed and a sub-frame in which the second control channel is placed.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 10, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya YANO, Michiharu Nakamura
  • Publication number: 20180359191
    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: Application
    Filed: August 21, 2018
    Publication date: December 13, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Michiharu Nakamura
  • Publication number: 20180359679
    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: Application
    Filed: August 21, 2018
    Publication date: December 13, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, YOSHIHIRO KAWASAKI, Takayoshi Ode, Michiharu Nakamura
  • Publication number: 20180206251
    Abstract: A wireless device is used in a wireless communication system that includes a base station for controlling communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted. The wireless device includes: a request transmitter that transmits a request for performing D2D (device-to-device) communication to the base station; a receiver that receives position information to indicate a position at which a blank subframe is allocated in the time division duplex frame from the base station; and a scheduler that determines a schedule for D2D communication based on the position information and reports the schedule to a corresponding wireless device. The blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.
    Type: Application
    Filed: March 15, 2018
    Publication date: July 19, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, Michiharu Nakamura, Chenxi Zhu
  • Patent number: 9942915
    Abstract: A wireless communication system includes a base station apparatus and a terminal device. The base station apparatus includes a processor that executes a process including mapping first control information concerning a first frequency band which needs a license to use for wireless communication, mapping second control information concerning a second frequency band which does not need the license to use for the wireless communication, and generating a control channel signal by arranging the first control information and the second control information in areas different from each other; and a transmitter that transmits the control channel signal generated by the processor to the terminal device.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 10, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Hongyang Chen, Yoshinori Tanaka, Michiharu Nakamura
  • Publication number: 20170325195
    Abstract: A wireless communications system includes a first wireless apparatus and a second wireless apparatus. The first wireless apparatus transmits a paging message that includes information indicating a plurality of cells. The paging message causes the second wireless apparatus to transition from an idle state to a connected state. The second wireless apparatus perform processing of connecting to a cell selected based on the information included in the paging message transmitted from the first wireless apparatus.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya YANO, Takayoshi ODE, Yoshiaki OHTA, Shinichiro AIKAWA, Tsuyoshi SHIMOMURA, Michiharu NAKAMURA
  • Publication number: 20170265226
    Abstract: A wireless communications system includes a first communications apparatus configured to use a predetermined band shared with a second wireless communications system and receive a wireless signal from a second communications apparatus; and the second communications apparatus. The first communications apparatus is further configured to assign to the second communications apparatus, a first candidate and a second candidate for a utilization resource in the predetermined band. The second communications apparatus is configured to perform radio resource idle state detection based on a result of assignment of the first candidate and the second candidate. The second communications apparatus is further configured to use the first candidate and transmit the wireless signal to the first communications apparatus when the first candidate is idle, and to use the second candidate and transmit the wireless signal to the first communications apparatus, when the first candidate is not idle and the second candidate is idle.
    Type: Application
    Filed: May 25, 2017
    Publication date: September 14, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya YANO, YOSHINORI TANAKA, Michiharu Nakamura
  • Patent number: 9730209
    Abstract: A communication terminal device includes a determining unit that determines a region size of a control channel in accordance with a PHICH duration value transmitted from a base station device, and an acquiring unit that acquires, on the basis of the region size, data to be sent to the communication terminal device. A base station device includes a first control unit that updates a CFI value at a first interval, a second control unit that updates a PHICH duration value at a second interval, the second interval being greater than the first interval, and a scheduling unit that performs scheduling of, only in a subframe in which the PHICH duration value matches the CFI value, data to be sent to a communication terminal device that is outside an arrival coverage of a signal including the CFI value.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: August 8, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Hongyang Chen, Yoshinori Tanaka, Daisuke Jitsukawa, Michiharu Nakamura
  • Publication number: 20170223724
    Abstract: A wireless communication system includes a base station apparatus and a terminal device. The base station apparatus includes a processor that executes a process including mapping first control information concerning a first frequency band which needs a license to use for wireless communication, mapping second control information concerning a second frequency band which does not need the license to use for the wireless communication, and generating a control channel signal by arranging the first control information and the second control information in areas different from each other; and a transmitter that transmits the control channel signal generated by the processor to the terminal device.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, YOSHINORI TANAKA, Michiharu Nakamura
  • Publication number: 20170181139
    Abstract: In a first case, a base station transmits to a first terminal, first assignment information that indicates radio resources in a first range assigned to terminal-to-terminal communication; the first terminal uses the radio resources indicated by the first assignment information and transmits a signal to a second terminal; and the second terminal receives the signal from the first terminal based on broadcast information transmitted by the base station. In a second case, the base station transmits to the first terminal, second assignment information that indicates radio resources in the first range and a second range assigned to the terminal-to-terminal communication. The first terminal uses the radio resources in the first range indicated by the second assignment information and transmits to the second terminal, control information that indicates the radio resources in the second range and transmits/receives signals to/from the second terminal by using the radio resources in the second range.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Michiharu Nakamura, YOSHIHIRO KAWASAKI, YOSHINORI TANAKA
  • Publication number: 20160381694
    Abstract: A wireless system includes a plurality of terminals and a wireless base station. Each of the plurality of terminals determines a priority of a local terminal related to transmission of a certain signal according to a certain rule when the certain signal is not received from the wireless base station.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya YANO, Michiharu Nakamura, YOSHINORI TANAKA, Kotaro Shiizaki, Daisuke JITSUKAWA, Hongyang CHEN, Yoshiaki Ohta, KENJI SUDA
  • Patent number: 9462509
    Abstract: A communication system includes: a base station configured to perform radio communication with a mobile station; and a control device configured to control a rate of transferring data to the base station based on a radio quality between the mobile station and the base station. A control device includes: a memory; and a processor coupled to the memory and configured to: obtain a radio quality between a mobile station and a base station that performs radio communication with the mobile station; and control a rate of transferring data to the base station based on the radio quality.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 4, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiharu Tajima, Naoyuki Saito, Kazuaki Ando, Michiharu Nakamura