Patents by Inventor Shoko Shinohara
Shoko Shinohara 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).
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Publication number: 20250039707Abstract: A frequency state observation system observes a spectrum in a predetermined frequency range by a plurality of observation devices that are arranged in advance at different positions in a predetermined area, performs wireless communication in the predetermined frequency range, receives, by a data calculation device, the spectrum and packet information from each of the plurality of observation devices together with each of time information, synchronizes each of spectra received by the data calculation device based on time information of packet information corresponding to the spectra, and determines usage of a frequency in the predetermined area or the type of a wireless system transmitting a radio wave in the predetermined area, on the basis of each of the synchronized spectra.Type: ApplicationFiled: November 19, 2021Publication date: January 30, 2025Inventors: Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI, Junichi IWATANI, Yoshitaka SHIMIZU, Tomoyuki YAMADA
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Publication number: 20250024382Abstract: A terminal apparatus includes a determination unit and a transmission unit. The determination unit determines a target of transmission power regulation based on a beacon frame. The transmission unit, in a case where it is determined that the target of regulation is not a transmission power density, transmits a first frame in a first frequency band, and in a case where it is determined that the target of regulation is a transmission power density, transmits a second frame which is a duplicate of the first frame in a second frequency band while transmitting the first frame in the first frequency band.Type: ApplicationFiled: August 18, 2021Publication date: January 16, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20250016576Abstract: A frequency state observation system according to an embodiment includes a spectrum observation device that observes a spectrum of a frequency range that can be used by a plurality of wireless communication systems, a control device that controls the spectrum observation device to perform a plurality of single sweeps over the frequency range, and a wireless communication device that transmits, by a radio signal, information indicating a frequency of occurrence of a signal having a predetermined threshold or more included in a spectrum observed by the spectrum observation device performing a plurality of single sweeps, with respect to a predetermined time.Type: ApplicationFiled: November 19, 2021Publication date: January 9, 2025Inventors: Shoko SHINOHARA, Yusuke Asai, Yasushi TAKATORI, Junichi Iwatani, Yoshitaka SHIMIZU, Tomoyuki Yamada
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Patent number: 12192842Abstract: A wireless communication system includes a plurality of base stations to which terminal stations are connectable, and a base station control device controlling each of the base stations. The base station control device includes an information collection unit collecting wireless environment information indicating wireless environments around the base stations and the terminal stations from each of the base stations, and a policy calculation unit calculating a policy for connecting the base stations and the terminal stations based on the wireless environment information. Each of the base stations includes receiver receiving the calculated policy a destination calculation unit calculating a destination to which a terminal station left unaccommodated is to be connected based on the received policy, and a transmitter transmitting the received policy and the calculated destination to the terminal station.Type: GrantFiled: January 28, 2020Date of Patent: January 7, 2025Assignee: Nippon Telegraph and Telephone CorporationInventors: Hirantha Abeysekera, Toshiro Nakahira, Shoko Shinohara, Koichi Ishihara, Yasushi Takatori
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WIRELESS COMMUNICATION SYSTEM, WIRELESS TERMINAL CONTROL METHOD, CONTROL DEVICE, AND CONTROL PROGRAM
Publication number: 20250008556Abstract: The wireless communication system includes a wireless terminal and a control unit. The wireless terminal includes a plurality of wireless modules that respectively perform wireless communication with a plurality of base stations on different channels. The wireless terminal uses one of the plurality of wireless modules as a use module, and stops data transmission from wireless modules other than the use module. The control unit performs switching of the use module in the wireless terminal such that a transmission time rate of each of the plurality of wireless modules does not exceed a predetermined upper limit.Type: ApplicationFiled: November 30, 2021Publication date: January 2, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Junichi IWATANI, Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI, Tomoyuki YAMADA, Yoshitaka SHIMIZU -
Patent number: 12185221Abstract: A wireless communication system includes a plurality of base stations to which one or more terminal stations are connectable, and a base station control device controlling each of the plurality of base stations. The base station control device includes an information collection unit collecting connection information regarding the terminal stations connected to the base stations from each of the base stations, a list generation unit generating a white list indicating the terminal stations allowed to be connected to the base stations for each of the base stations based on the connection information, and a transmission unit configured to transmit the white list to each of the base stations. Each of the base stations includes a reception unit receiving the white list, and a setting unit performing setting so as to allow or inhibit connection of each of the terminal stations to the base station based on the received white list.Type: GrantFiled: January 28, 2020Date of Patent: December 31, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Hirantha Abeysekera, Toshiro Nakahira, Shoko Shinohara, Koichi Ishihara, Yasushi Takatori
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Publication number: 20240430750Abstract: A wireless apparatus according to an aspect of the present invention includes a threshold determination unit that determines a threshold used for determining a usage state of a frequency channel, the threshold determination unit setting the threshold to a first value when a first priority that is a priority of a frame to be transmitted is a first priority level and setting the threshold to a second value higher than the first value when the first priority is a second priority level higher than the first priority level, and a carrier sense control unit that determines the usage state of the frequency channel based on a comparison between reception power of a frame detected on the frequency channel by carrier sense and the threshold.Type: ApplicationFiled: August 18, 2021Publication date: December 26, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hanae OTANI, Kengo NAGATA, Akira KISHIDA, Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20240413887Abstract: A network includes: a first link between a first STA as a repeater and a first AP as a parent device; and a second link between a second STA as a child device and the first STA. A first transmission time is set during which transmission is permitted to the first link based on a first amount of transmission. A second transmission time is set during which transmission is permitted to the second link based on a second amount of transmission. An entire transmission cycle is determined based on the first transmission time and the second transmission time. A first transmission period and a second transmission period do not overlap in the entire transmission cycle. Wireless communication performed on the first link is limited within the first transmission period. Wireless communication performed on the second link is limited within the second transmission period.Type: ApplicationFiled: November 9, 2021Publication date: December 12, 2024Inventors: Shoko SHINOHARA, Yusuke ASAI, Yoshitaka SHIMIZU, Junichi IWATANI, Tomoyuki YAMADA, Yasushi TAKATORI
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Patent number: 12160797Abstract: A base station (10) according to an embodiment includes a data processing unit (101) and a wireless signal processing unit (103). The data processing unit (101) generates a MAC frame. The MAC frame includes input data and an identification bit (CB). The identification bit (CB) indicates that data is extended broadcast data. The wireless signal processing unit (103) converts the MAC frame into a wireless signal to distribute the wireless signal.Type: GrantFiled: January 10, 2020Date of Patent: December 3, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuhiko Inoue, Shoko Shinohara, Akira Kishida, Kengo Nagata, Yusuke Asai, Yasushi Takatori
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Patent number: 12156053Abstract: A wireless performance evaluation method for performing wireless performance evaluation of a wireless network including wireless base stations and wireless terminal stations includes: before performing wireless performance evaluation operation based on wireless performance evaluation information generated from wireless performance evaluation conditions, determining whether an existing wireless performance evaluation result of wireless performance evaluation operation that has been performed is substitutable or not; and if the existing wireless performance evaluation result is substitutable, skipping arithmetic processing corresponding to the wireless performance evaluation information and substituting the existing wireless performance evaluation result.Type: GrantFiled: March 24, 2020Date of Patent: November 26, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Shoko Shinohara, Hirantha Abeysekera, Yasuhiko Inoue, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Publication number: 20240389147Abstract: In a wireless communication method between a base station and a plurality of wireless terminals, the base station includes a plurality of first wireless modules that perform wireless communication using different channels that do not overlap each other, and each of the plurality of wireless terminals includes a second wireless module that performs wireless communication using any one communication channel. The wireless communication method includes executing a channel switching process of switching use states of the plurality of first wireless modules according to a predetermined schedule so as to enable any one of the plurality of first wireless modules to carry out transmission and to prohibit the other thereof from carrying out transmission. Further, there is a sleeping of an operation of the second wireless module while the first wireless module that performs wireless communication using the communication channel is prohibited from carrying out transmission.Type: ApplicationFiled: October 1, 2021Publication date: November 21, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI, Junichi IWATANI, Yoshitaka SHIMIZU, Tomoyuki YAMADA
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Publication number: 20240373213Abstract: A transmitting station includes a fragmentation unit, a packet number allocation unit, an encryption unit, a wireless signal processing unit, and a retransmission control unit. The fragmentation unit divides data into fragments. The packet number allocation unit allocates a first packet number to the fragments. The encryption unit encrypts the fragments on the basis of the first packet number. The wireless signal processing unit transmits the fragments encrypted as a wireless signal to a receiving station. When retransmitting the data, the retransmission control unit instructs the packet number allocation unit to reset the first packet number to an initial value, requests the receiving station to reset a second packet number managed by the receiving station to an initial value for decryption of the fragments encrypted, and instructs the fragmentation unit to reconfigure an unsuccessfully transmitted fragment.Type: ApplicationFiled: August 30, 2021Publication date: November 7, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20240340829Abstract: A transmitting station which is a station that transmits a wireless signal includes a first wireless signal processing unit, a second wireless signal processing unit, and a transmission timing adjustment unit. The first wireless signal processing unit transmits and receives a wireless signal using a first channel. The second wireless signal processing unit transmits and receives a wireless signal using a second channel different from the first channel. The transmission timing adjustment unit adjusts transmission timings of first data and second data on the basis of a first status associated with the first wireless signal processing unit and a second status associated with the second wireless signal processing unit.Type: ApplicationFiled: August 18, 2021Publication date: October 10, 2024Inventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20240340685Abstract: An access point of an embodiment includes first and second wireless signal processing units and a link management unit. The link management unit establishes a multi-link with a first wireless terminal apparatus using the first and second wireless signal processing units. The link management unit is capable of setting at least the multi-link to a first operation mode and sets the first and second wireless signal processing units to an intermittent operation mode in the first operation mode. When the multi-link is set to the first operation mode and first data addressed to the first wireless terminal apparatus is input, the link management unit causes at least one wireless signal processing unit associated with a traffic identifier attached to the first data to transmit a beacon signal including information indicating that the first data has been buffered.Type: ApplicationFiled: August 18, 2021Publication date: October 10, 2024Inventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke Asai, Yasushi TAKATORI
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Publication number: 20240334417Abstract: A wireless communication system includes a plurality of wireless communication apparatuses that constitutes a wireless communication network and one or a plurality of control apparatuses that controls the plurality of wireless communication apparatuses. The plurality of wireless communication apparatuses includes a base station, a first wireless terminal, and a second wireless terminal. Each of the base station and the first wireless terminal includes N (N is an integer of two or more) network interface controllers (NICs), and the second wireless terminal includes M (M<N) NICs. The control apparatus executes channel switching processing of switching a use state of the N NICs in the base station and the first wireless terminal. The control apparatus controls the base station and the first wireless terminal to use NICs of the same channel in the same period.Type: ApplicationFiled: July 20, 2021Publication date: October 3, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI, Junichi IWATANI, Tomoyuki YAMADA, Yoshitaka SHIMIZU
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Publication number: 20240334468Abstract: A wireless communication system includes a plurality of wireless communication apparatuses forming a wireless communication network. The system also includes one or a plurality of control apparatuses that controls the plurality of wireless communication apparatuses. Each of the plurality of wireless communication apparatuses includes a plurality of network interface controllers (NICs) that performs wireless communication through different channels that do not overlap each other. The control apparatus executes channel switching processing of switching a use state of the plurality of NICs in each wireless communication apparatus. The control apparatus controls the plurality of wireless communication apparatuses to use NICs of the same channel in the same period. The control apparatus controls to share connection information regarding each of the plurality of NICs in advance before the channel switching processing.Type: ApplicationFiled: July 20, 2021Publication date: October 3, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI, Junichi IWATANI, Tomoyuki YAMADA, Yoshitaka SHIMIZU
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Publication number: 20240314827Abstract: A wireless communication management apparatus includes a determination unit, an evaluation unit, and a selection unit. The determination unit determines an interference relationship of a combination of bandwidth and channel on the basis of wireless environment information collected from one or more terminals capable of wireless communication with a base station. The evaluation unit calculates an evaluation value for each combination of bandwidth and channel on the basis of the interference relationship. The selection unit selects one combination from the combinations of bandwidth and channel on the basis of the evaluation value.Type: ApplicationFiled: December 25, 2020Publication date: September 19, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko SHINOHARA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20240305555Abstract: A wireless communication management apparatus (100) according to one aspect of the present invention includes a path calculation unit (152) that, on the basis of wireless environment information collected from one or more relay base stations (210) and a plurality of terminals (300) configured to wirelessly communicate with a root base station (200), calculates one or more path candidates which are connectable paths that can be taken as a network configuration by multi-hop communication and in which a traffic amount of each relay base station (210) included in the connectable paths is less than a threshold, and a determination unit (153) that determines one of the one or more path candidates as an optimal path.Type: ApplicationFiled: December 25, 2020Publication date: September 12, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko SHINOHARA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI
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Patent number: 12082077Abstract: A wireless communication system includes a plurality of transmission devices configured to receive broadcast/multicast data transmitted from a broadcast/multicast data transmission device, convert the broadcast/multicast data into wireless frames, and broadcast/multicast the wireless frames to a plurality of reception devices, and the plurality of reception devices configured to receive the wireless frames broadcasted/multicasted from the plurality of transmission devices and acquire the broadcast/multicast data, and each of the plurality of transmission devices includes a broadcast/multicast transmission unit configured to generate the same wireless frame from the broadcast/multicast data and broadcast/multicast the generated wireless frame at the same transmission timing using the same MCS.Type: GrantFiled: April 13, 2020Date of Patent: September 3, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yasuhiko Inoue, Shoko Shinohara, Takafumi Hayashi
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Patent number: 12074655Abstract: A wireless communication characteristic evaluation method for calculating a wireless communication characteristic of a wireless communication system in which a plurality of wireless communication terminals perform communication by transmitting or exchanging signals includes: an RSSI measurement step of measuring an RSSI measurement used for calculation of the wireless communication characteristic; and a calculation step of calculating the wireless communication characteristic based on the RSSI measurement and correction data of the RSSI measurement according to specifications of the wireless communication terminals or a correction calculation model.Type: GrantFiled: March 24, 2020Date of Patent: August 27, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko Shinohara, Toshiro Nakahira, Yasuhiko Inoue, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori