Patents by Inventor Takatsune MORIYAMA

Takatsune MORIYAMA 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: 20240056831
    Abstract: A control system includes a prediction unit configured to predict future wireless communication quality based on information related to a wireless communication device and environment information that affects the wireless communication quality, in a certain cycle, in which at least one of a target device or a target system is controlled based on the future wireless communication quality, and in which information obtained from at least one of the target device or the target system that is controlled is used for prediction of a next cycle by the prediction unit.
    Type: Application
    Filed: April 14, 2021
    Publication date: February 15, 2024
    Inventors: Motoharu SASAKI, Toshiro NAKAHIRA, Takatsune MORIYAMA
  • Patent number: 11895693
    Abstract: In a random access radio communication system configured to perform downlink communication from a radio base station to radio terminals by random access, the radio terminals include one or more low latency terminals requiring low latency and one or more non-low latency terminals not requiring low latency, and the low latency terminals and the non-low latency terminals are configured to be distinguished by service set identifiers (SSIDs). The random access radio communication system includes terminal assignment destination control unit of distinguishing the low latency terminals and the non-low latency terminals in accordance with the SSIDs and evenly distributing the terminals into a plurality of communication channels, and random access control unit of performing priority control on the low latency terminals and the non-low latency terminals for each communication channel so that the downlink communication in the low latency terminal satisfies a predetermined delay time.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: February 6, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tomoyuki Yamada, Keisuke Wakao, Kenichi Kawamura, Akira Kishida, Shota Nakayama, Yasushi Takatori, Takatsune Moriyama
  • Publication number: 20240040458
    Abstract: The present disclosure provides a wireless communication system cooperation method appropriate for cooperation between a mobile communication system and a wireless LAN system involving priority control. In a communication area of 5G, a 5QI representing communication quality is allocated to a service data flow, and the communication of the service data flow is performed via a base station so that the communication quality is realized. A priority condition corresponding to 5QI is set for a communication time condition of the wireless LAN (step 100). When the wireless terminal UE to be protected is handed over to the wireless LAN (step 102), a priority condition set based on 5QI is instructed to the access point (step 106). Thereafter, the access point performs communication of the service data flow according to the priority condition.
    Type: Application
    Filed: August 25, 2020
    Publication date: February 1, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shota NAKAYAMA, Daisuke MURAYAMA, Kenichi KAWAMURA, Takatsune MORIYAMA
  • Publication number: 20240032086
    Abstract: A relay method is executed by a relay device that relays communication between each of terminals accommodated by wireless communication and an external device. The relay method includes setting, for each terminal of the terminals, a time period from storing a packet in a queue until transmitting the packet to the terminal as a first time period; and setting, for each terminal of the terminals, a time interval in which the terminal is allowed to transmit a packet by the wireless communication as a second time period corresponding to the first time period.
    Type: Application
    Filed: August 27, 2020
    Publication date: January 25, 2024
    Inventors: Shota NAKAYAMA, Kenichi KAWAMURA, Daisuke MURAYAMA, Takatsune MORIYAMA
  • Publication number: 20230388812
    Abstract: A learning method in which a learning device performs learning on a model for estimating wireless quality by machine learning, and the learning method includes a learning step of generating a pre-trained model by performing the learning on the model by using measurement data of wireless quality obtained by a plurality of terminals, and a retraining step of retraining the pre-trained model by using measurement data satisfying a predetermined condition.
    Type: Application
    Filed: November 6, 2020
    Publication date: November 30, 2023
    Inventors: Keisuke WAKAO, Kenichi KAWAMURA, Takatsune MORIYAMA
  • Publication number: 20230328595
    Abstract: The present disclosure provides a wireless communication system cooperation method appropriate for cooperation between a mobile communication system and a wireless LAN system involving priority control. In a communication area of 5G, a 5QI representing communication quality is allocated to a service data flow, and the communication of the service data flow is performed via a base station so that the communication quality is realized. A priority condition corresponding to 5QI is set for a frequency resource of the wireless LAN (step 100). When the wireless terminal UE to be protected is handed over to the wireless LAN (step 102), a priority condition set based on 5QI is instructed to the access point (step 106). Thereafter, the access point performs communication of the service data flow according to the priority condition.
    Type: Application
    Filed: August 25, 2020
    Publication date: October 12, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shota NAKAYAMA, Daisuke MURAYAMA, Kenichi KAWAMURA, Takatsune MORIYAMA
  • Publication number: 20230300707
    Abstract: There is provided a communication system including: a terminal that communicates with a base station wirelessly; and a control device, in which the terminal includes a transmission unit that transmits information on a location of the terminal, and the control device includes an information collection unit that acquires the information on the location of the terminal, an entry prediction calculation unit that predicts a future location of the terminal based on the information on the location of the terminal and that determines whether the terminal is to enter a dead zone by comparing the future position with the dead zone, and a connection destination control unit that executes control for switching a connection destination of the terminal when the entry prediction calculation unit determines that the terminal is to enter the dead zone.
    Type: Application
    Filed: July 27, 2020
    Publication date: September 21, 2023
    Inventors: Shota Nakayama, Daisuke MURAYAMA, Kenichi Kawamura, Takatsune Moriyama
  • Publication number: 20230292140
    Abstract: A determination method of determining an installation position of a movable base station and a connection destination base station, executed by an information processing device including a memory and a processor, includes: determining a mesh in which the movable base station can be installed, and a base station to which the movable base station can be connected in the mesh, based on a reception strength of a radio signal from each of one or more base stations in each of one or more meshes.
    Type: Application
    Filed: August 25, 2020
    Publication date: September 14, 2023
    Inventors: Toshiro NAKAHIRA, Motoharu SASAKI, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
  • Publication number: 20230276335
    Abstract: A communication system includes a terminal configured to wirelessly communicate with a base station and a control device. The terminal includes a transmission unit that transmits location information of the terminal. The control device includes a preliminary dead area setting unit that sets an area around a dead zone as a preliminary dead area, an information collection unit that acquires location information of the terminal, and a connection destination control unit that determines whether the terminal is in the preliminary dead area by comparing the location information of the terminal with the preliminary dead area and performs control for switching a connection destination of the terminal when the connection destination control unit determines that the terminal is in the preliminary dead area.
    Type: Application
    Filed: July 27, 2020
    Publication date: August 31, 2023
    Inventors: Shota Nakayama, Daisuke MURAYAMA, Kenichi Kawamura, Takatsune Moriyama
  • Publication number: 20230269637
    Abstract: A communication system including a terminal configured to wirelessly communicate with a base station, a plurality of IoT terminals, and a control device, in which the control device includes an IoT terminal command unit configured to select an IoT terminal around a dead zone and transmit a command of signal transmission to the selected IoT terminal, the selected IoT terminal includes a command reception unit configured to receive the command, and a signal transmission unit configured to transmit a signal according to the command, and the terminal receiving the signal transmitted from the selected IoT terminal performs a connection operation for avoiding the dead zone.
    Type: Application
    Filed: July 27, 2020
    Publication date: August 24, 2023
    Inventors: Shota Nakayama, Daisuke MURAYAMA, Kenichi Kawamura, Takatsune Moriyama
  • Publication number: 20230262476
    Abstract: A radio signal strength information calculation method performed by a control apparatus includes: a generation step of calculating radio information regarding each of a plurality of meshes into which an area where base stations are placed is divided and generating mesh radio information; and a calculation step of placing a virtual base station at a position to where any of the base stations would be moved in the area, and calculating radio signal strength information between a plurality of base stations including the base stations and the virtual base station based on the mesh radio information.
    Type: Application
    Filed: August 26, 2020
    Publication date: August 17, 2023
    Inventors: Toshiro NAKAHIRA, Motoharu SASAKI, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
  • Publication number: 20230247441
    Abstract: A method of determining a location at which a movable base station is to be installed is provided. In the method, an information processing device performs first determination processing of determining a base station providing radio communication that does not satisfy a predetermined condition based on information of a radio signal of each base station, second determination processing of determining a number of virtual terminals to be set in a coverage area of the base station providing the radio communication that does not satisfy the predetermined condition based on the information of the radio signal of the base station, and third determination processing of determining the location at which the movable base station is to be installed based on a location of each virtual terminal set in the coverage area of the base station providing the radio communication that does not satisfy the predetermined condition.
    Type: Application
    Filed: August 25, 2020
    Publication date: August 3, 2023
    Inventors: Toshiro NAKAHIRA, Motoharu SASAKI, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
  • Publication number: 20230224737
    Abstract: An information processing method includes: an association step of associating pieces of wireless signal information that are respectively transmitted by a plurality of base stations and are measured at a plurality of measurement positions with cells of the base stations, for each of the measurement positions; and an interference calculation step of calculating interference between cells of the plurality of base stations based on the pieces of wireless signal information associated with the cells of the base stations.
    Type: Application
    Filed: June 8, 2020
    Publication date: July 13, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Koichi ISHIHARA, Takatsune MORIYAMA
  • Publication number: 20230128921
    Abstract: A wireless communication method according to an embodiment is a method executed by a wireless terminal apparatus and a quality prediction engine that predicts a quality related to communication performed by the wireless terminal apparatus, and the method includes: by the wireless terminal apparatus, notifying the quality prediction engine of information about a plurality of wireless base stations connectable to the wireless terminal apparatus, model information of the wireless terminal apparatus, information about wireless communication environment around the wireless terminal apparatus, and information detected by a sensor mounted on the wireless terminal apparatus; by the quality prediction engine, calculating, based on the notified information, a predicted value of a communication quality when the wireless terminal apparatus is connected to the plurality of connectable wireless base stations in accordance with a prediction function, and notifying the wireless terminal apparatus of the calculated predicted
    Type: Application
    Filed: March 2, 2020
    Publication date: April 27, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke WAKAO, Kenichi KAWAMURA, Takatsune MORIYAMA, Shota NAKAYAMA
  • Publication number: 20230097069
    Abstract: An embodiment of the present invention is a local wireless communication system that emits a radio wave in a licensed band to form a wireless communication environment in a predetermined area. The system includes a base station configured to emit a radio wave, a plurality of sensors disposed along an edge of the area, and a control apparatus. The sensors each measure a radio field intensity of the radio wave emitted from the base station, and feed the radio field intensity back to the control apparatus via the base station. The control apparatus controls a transmission power of the radio wave from the base station to control the fed radio field intensity.
    Type: Application
    Filed: March 2, 2020
    Publication date: March 30, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke MURAYAMA, Koichi ISHIHARA, Kenichi KAWAMURA, Takatsune MORIYAMA
  • Publication number: 20230087262
    Abstract: There are provided a collection unit that collects priority information indicating priority of radio communication set for each base station and route information for specifying a wired communication route for each base station, a radio parameter calculation unit that calculates a radio parameter of radio communication of each base station to reflect the priority indicated by the priority information, a wired parameter calculation unit that calculates, for each wired communication route specified by the route information, a wired parameter of wired communication of a corresponding base station based on the radio parameter calculated by the radio parameter calculation unit to reflect the priority indicated by the priority information, and a setting unit that sets the radio parameter calculated by the radio parameter calculation unit for each base station and sets the wired parameter calculated by the wired parameter calculation unit for each wired communication route.
    Type: Application
    Filed: March 17, 2020
    Publication date: March 23, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
  • Publication number: 20220408453
    Abstract: A wireless LAN system where an interfering communication device is present around a base station device and a terminal device includes an interference control signal transmitter that transmits an interference control signal that causes the interfering communication device to wait for transmission, and an interference control signal management device that collects wireless environment information, sets wireless LAN communication between the base station device and the terminal device, which are protection targets, as protected communication, and causes the interference control signal transmitter to transmit an interference control signal that causes the interfering communication device to wait for transmission, and the interference control signal management device instructs the interference control signal transmitter to start transmitting the interference control signal when detecting a start of the protected communication and instructs the interference control signal transmitter to stop transmitting the inter
    Type: Application
    Filed: November 26, 2019
    Publication date: December 22, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shota NAKAYAMA, Kenichi KAWAMURA, Takatsune MORIYAMA, Keisuke WAKAO, Yasushi TAKATORI
  • Publication number: 20220386374
    Abstract: In a wireless LAN system that performs multi-user transmission, an access point device includes: a selection unit configured to select, as terminals to be caused to transmit CTS in response to an MU-RTS frame, terminals that satisfy predetermined conditions and include at least a terminal that is to be protected and has to satisfy predetermined low latency and low jitter, regardless of whether or not the terminals are terminals to which a resource for transmitting data should be allocated; an allocation unit configured to allocate the resource for transmitting data to the terminals; a frame generation unit configured to generate the MU-RTS frame such that the terminals selected by the selection unit transmit the CTS, and generates a frame that contains a signal indicating the resource allocated by the allocation unit; and a communication unit configured to transmit the frames generated by the frame generation unit to the plurality of terminals.
    Type: Application
    Filed: November 13, 2019
    Publication date: December 1, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kenichi KAWAMURA, Yasushi TAKATORI, Takatsune MORIYAMA, Shota NAKAYAMA, Keisuke WAKAO
  • Publication number: 20220345927
    Abstract: Provided are: a first wireless station, a second wireless station that can move to an arbitrary position in a three-dimensional space and perform wireless communication with the first wireless station, and a measuring device that measures the position of the second wireless station in the three-dimensional space to obtain measurement information. At least one out of the first wireless station, the second wireless station, and the measuring device includes: an acquisition unit that acquires reception signal information that was received by the first wireless station or the second wireless station, and a calculation unit that associates the measurement information and the reception signal information with each other and calculates the propagation characteristics between the first wireless station and the second wireless station.
    Type: Application
    Filed: October 4, 2019
    Publication date: October 27, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Nobuaki KUNO, Wataru YAMADA, Mitsuki NAKAMURA, Takatsune MORIYAMA, Yasushi TAKATORI
  • Publication number: 20220345899
    Abstract: Provided are: an extraction unit that, based on input information from an external source, extracts position information regarding a transmitting station and a receiving station and the frequency of radio waves transmitted by the transmitting station; a calculation unit that calculates the three-dimensional distance between the transmitting station and the receiving station and the free space loss of radio waves based on the position information and the frequency; a processing unit that performs processing for, with use of a two-dimensional image of a region that includes the transmitting station and the receiving station, extracting the edges of structures that reflect radio waves in the two-dimensional image; a generation unit that generates input data for use in machine learning, based on the position information, the three-dimensional distance, the free space loss, and the edge; and a learning unit that performs machine learning to estimate the propagation characteristics of radio waves between the transm
    Type: Application
    Filed: October 4, 2019
    Publication date: October 27, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Nobuaki KUNO, Wataru YAMADA, Takatsune MORIYAMA, Yasushi TAKATORI