Patents by Inventor Hiroshi OU

Hiroshi OU 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: 20210288723
    Abstract: An optical transmission system includes ground stations; optical-terminating devices; a traffic-monitoring unit that detects a traffic amount of the uplink signal transmitted in a time-division multiplexing manner for each of the optical-terminating devices; and a bandwidth allocation calculation unit that estimates one optical-terminating device of the optical-terminating devices connected to one ground station of the ground stations having a cell where the moving object is positioned on the basis of the traffic amount, and calculates a first allocation amount of a bandwidth allocated to the uplink signal of the one optical-terminating device connected to the one ground station having the cell where the moving object is positioned and a second allocation amount of a bandwidth allocated to the uplink signal of another optical-terminating device of the optical-terminating devices connected to another ground station of the ground stations having a cell adjacent to the cell where the moving object is positioned.
    Type: Application
    Filed: September 8, 2017
    Publication date: September 16, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke HISANO, Tatsuya SHIMADA, Hiroshi OU, Hiroko NOMURA
  • Publication number: 20210144585
    Abstract: A network node in a wireless communication system comprising a user equipment and a plurality of network nodes, comprises: a reception unit for receiving from another network node or a user equipment a protocol data unit related to packet transmission that has a possibility of a plurality of data lengths with respect to sequence numbers; an acquiring unit for acquiring a sequence number of the protocol data unit related to packet transmission; and a notification unit for carrying out, based on the sequence number as acquired, notification related to packet transmission.
    Type: Application
    Filed: May 17, 2018
    Publication date: May 13, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Tooru Uchino, Hiroshi Ou, Makoto Miyagoshi
  • Patent number: 10925058
    Abstract: An optical transmission device includes a bandwidth allocator that periodically reads bandwidth request information indicating a bandwidth required for a termination device to transmit an uplink signal from a storage and allocates a bandwidth to the termination device on the basis of the read bandwidth request information, and a timing adjuster that adjusts a period at intervals of which the bandwidth allocator reads the bandwidth request information from the storage on the basis of the timing at which resource information used to generate the bandwidth request information is received from an upper device.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: February 16, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tatsuya Shimada, Takayuki Kobayashi, Hiroshi Ou, Daisuke Hisano
  • Publication number: 20200389263
    Abstract: A communication apparatus used as a first communication apparatus in a radio communication system including the first communication apparatus and a second communication apparatus, comprising a communication unit configured to receive a retransmitted packet addressed to a user equipment from the second communication apparatus, and to transmit the retransmitted packet to the user equipment, the communication unit transmitting delivery status information including a sequence number of the retransmitted packet to the second communication apparatus.
    Type: Application
    Filed: November 17, 2017
    Publication date: December 10, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Anil Umesh, Tooru Uchino, Akihito Hanaki, Hiroshi Ou
  • Patent number: 10805905
    Abstract: Information on allocation of a bandwidth of uplink communication of each of user devices is extracted from information notified from an upper-level device on the uplink communication of the user devices. Correspondence information is created to indicate a correspondence among the upper-level device, the terminal device, the lower-level device, and the user device. A start time point of the uplink communication of the terminal device and an information amount of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the information on allocation of the bandwidth of the uplink communication of each of the user devices and the correspondence information.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: October 13, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi Ou, Tatsuya Shimada, Takayuki Kobayashi, Jun Terada
  • Publication number: 20200236658
    Abstract: In one aspect of the present invention, a first base station for communicating with user equipment together with a second base station according to dual connectivity includes a data storage unit configured to store data to be transmitted from the first base station to the user equipment; a reception unit configured to receive from the second base station information indicating whether data to be transmitted from the second base station to the user equipment exist; and a state control unit configured to, when information indicating that data to be transmitted from the second base station to the user equipment exist is received, prevent the user equipment from releasing a radio resource or transitioning to a discontinuous reception state, even if the amount of to-be-transmitted data stored in the data storage unit is less than or equal to a predetermined threshold.
    Type: Application
    Filed: November 17, 2017
    Publication date: July 23, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Anil Umesh, Tooru Uchino, Akihito Hanaki, Hiroshi Ou
  • Patent number: 10686545
    Abstract: An optical transmission system of an embodiment connects a plurality of wireless communication systems to each other, and includes a wavelength allocation unit that allocates different wavelengths to optical-terminating devices to which the wireless communication systems next to each other are connected, on the basis of the physical arrangement of each of the plurality of wireless communication system.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 16, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke Hisano, Tatsuya Shimada, Jun Terada, Hiroshi Ou, Hiroko Nomura
  • Patent number: 10574430
    Abstract: A relay transmission system includes a relay unit configured to relay uplink signals and downlink signals in the first and second communication systems, a time division duplex (TDD) information estimation unit configured to estimate a transmission period of network devices in the first communication system on the basis of the uplink or downlink signal of the first communication system that is relayed by the relay unit, a surplus bandwidth determination unit configured to determine a surplus bandwidth in which an uplink signal of the first communication system is not allocated to a relay target of the relay unit during the transmission period on the basis of the number of network devices and a maximum transmission capacity of the network devices, and a bandwidth allocation unit configured to allocate the uplink signal of the second communication system to the relay target of the relay unit in the surplus bandwidth.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: February 25, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke Hisano, Tatsuya Shimada, Hiroshi Ou, Takayuki Kobayashi
  • Patent number: 10555330
    Abstract: A terminal station device is a terminal station device of a communication system in which a high-order device, the terminal station device, an end-terminal device, and a low-order device are communicably connected in this order, the high-order device notifies the low-order device of resource information indicating a resource that is usable in communication, and thereby the resource is allocated to the low-order device. The terminal station device includes: a band allocation unit that allocates a band that is permitted to be used by the end-terminal device for transmission processing to the terminal station device, based on an interval at which the terminal station device has received the resource information.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: February 4, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi Ou, Takayuki Kobayashi, Daisuke Hisano, Tatsuya Shimada
  • Patent number: 10505657
    Abstract: Information on allocation of a bandwidth of uplink communication of each user device is extracted from information notified by an upper-level device on the uplink communication of the user devices. Identification information of a lower-level device connected to a terminal device and identification information of the user devices are stored in correlation with each other. A bandwidth demanded for uplink communication of the terminal device is determined on the basis of the information on the allocation of the bandwidth of the uplink communication of each of the user devices and the identification information of the user devices. A start time point of the uplink communication of the terminal device and the amount of information of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the bandwidth demanded for the uplink communication of the terminal device.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: December 10, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi Ou, Tatsuya Shimada, Takayuki Kobayashi, Jun Terada
  • Publication number: 20190372698
    Abstract: An optical transmission system of an embodiment connects a plurality of wireless communication systems to each other, and includes a wavelength allocation unit that allocates different wavelengths to optical-terminating devices to which the wireless communication systems next to each other are connected, on the basis of the physical arrangement of each of the plurality of wireless communication system.
    Type: Application
    Filed: September 27, 2017
    Publication date: December 5, 2019
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke HISANO, Tatsuya SHIMADA, Jun TERADA, Hiroshi OU, Hiroko NOMURA
  • Publication number: 20190182836
    Abstract: An optical transmission device includes a bandwidth allocator that periodically reads bandwidth request information indicating a bandwidth required for a termination device to transmit an uplink signal from a storage and allocates a bandwidth to the termination device on the basis of the read bandwidth request information, and a timing adjuster that adjusts a period at intervals of which the bandwidth allocator reads the bandwidth request information from the storage on the basis of the timing at which resource information used to generate the bandwidth request information is received from an upper device.
    Type: Application
    Filed: June 19, 2017
    Publication date: June 13, 2019
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tatsuya SHIMADA, Takayuki KOBAYASHI, Hiroshi OU, Daisuke HISANO
  • Publication number: 20190007955
    Abstract: A terminal station device is a terminal station device of a communication system in which a high-order device, the terminal station device, an end-terminal device, and a low-order device are communicably connected in this order, the high-order device notifies the low-order device of resource information indicating a resource that is usable in communication, and thereby the resource is allocated to the low-order device. The terminal station device includes: a band allocation unit that allocates a band that is permitted to be used by the end-terminal device for transmission processing to the terminal station device, based on an interval at which the terminal station device has received the resource information.
    Type: Application
    Filed: January 23, 2017
    Publication date: January 3, 2019
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi OU, Takayuki KOBAYASHI, Daisuke HISANO, Tatsuya SHIMADA
  • Publication number: 20180309563
    Abstract: A relay transmission system includes a relay unit configured to relay uplink signals and downlink signals in the first and second communication systems, a time division duplex (TDD) information estimation unit configured to estimate a transmission period of network devices in the first communication system on the basis of the uplink or downlink signal of the first communication system that is relayed by the relay unit, a surplus bandwidth determination unit configured to determine a surplus bandwidth in which an uplink signal of the first communication system is not allocated to a relay target of the relay unit during the transmission period on the basis of the number of network devices and a maximum transmission capacity of the network devices, and a bandwidth allocation unit configured to allocate the uplink signal of the second communication system to the relay target of the relay unit in the surplus bandwidth.
    Type: Application
    Filed: October 25, 2016
    Publication date: October 25, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke HISANO, Tatsuya SHIMADA, Hiroshi OU, Takayuki KOBAYASHI
  • Publication number: 20180077686
    Abstract: Information on allocation of a bandwidth of uplink communication of each of user devices is extracted from information notified from an upper-level device on the uplink communication of the user devices. Correspondence information is created to indicate a correspondence among the upper-level device, the terminal device, the lower-level device, and the user device. A start time point of the uplink communication of the terminal device and an information amount of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the information on allocation of the bandwidth of the uplink communication of each of the user devices and the correspondence information.
    Type: Application
    Filed: March 28, 2016
    Publication date: March 15, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi OU, Tatsuya SHIMADA, Takayuki KOBAYASHI, Jun TERADA
  • Publication number: 20180063831
    Abstract: Information on allocation of a bandwidth of uplink communication of each user device is extracted from information notified by an upper-level device on the uplink communication of the user devices. Identification information of a lower-level device connected to a terminal device and identification information of the user devices are stored in correlation with each other. A bandwidth demanded for uplink communication of the terminal device is determined on the basis of the information on the allocation of the bandwidth of the uplink communication of each of the user devices and the identification information of the user devices. A start time point of the uplink communication of the terminal device and the amount of information of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the bandwidth demanded for the uplink communication of the terminal device.
    Type: Application
    Filed: March 25, 2016
    Publication date: March 1, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi OU, Tatsuya SHIMADA, Takayuki KOBAYASHI, Jun TERADA