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    CONTROL STATION DEVICE AND WIRELESS TERMINAL STATION DEVICE
    21.
    发明申请
    CONTROL STATION DEVICE AND WIRELESS TERMINAL STATION DEVICE 有权

    公开(公告)号：US20220264438A1

    公开(公告)日：2022-08-18

    申请号：US17625435

    申请日：2019-07-10

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Tomoki MURAKAMI ,  Toshiro NAKAHIRA ,  Ryota SHIINA ,  Kazutaka HARA ,  Tomohiro TANIGUCHI

    IPC: H04W48/18 ,  H04W48/16

    Abstract: A control station device includes a policy generation unit that calculates a priority order of a plurality of wireless communication systems having different types of systems on a basis of information acquired from a wireless terminal device that selects one wireless communication system from among the plurality of wireless communication systems to perform wireless communication, and generates a selection policy indicating the priority order of the plurality of wireless communication systems, and a policy delivery unit that delivers the selection policy indicating the priority order of the plurality of wireless communication systems to the wireless terminal device. With this configuration, an optimal wireless communication system that maximizes the performance of each wireless terminal device can be selected while reducing the load and calculation time imposed on the control station device.

    POSITION ESTIMATION SYSTEM, CONTROLLER, POSITION ESTIMATION METHOD, AND PROGRAM
    22.
    发明申请
    POSITION ESTIMATION SYSTEM, CONTROLLER, POSITION ESTIMATION METHOD, AND PROGRAM 有权

    公开(公告)号：US20250089006A1

    公开(公告)日：2025-03-13

    申请号：US18721463

    申请日：2021-12-21

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Ryota SHIINA ,  Tomohiro TANIGUCHI ,  Shinya TAMAKI

    IPC: H04W64/00 ,  H04W4/38

    Abstract: An object of the present invention is to provide a position estimation system, a control device, a position estimation method, and a program which are capable of estimating a position of a sensor using existing lighting as it is. The position estimation system according to the present invention makes use of the fact that, when a pattern is sent from each light source at a separate frequency, the peak intensities thereof differ in accordance with a position of a sensor if the spectrum of the received signal light is plotted. That is to say, this position estimation system estimates the position of the sensor by comparing the peak intensity ratio of the spectrum when the light pattern from each light source is received and the theoretical peak intensity ratio which serves as a reference prepared in advance.

    COMMUNICATION SYSTEMS, CONTROLS, CONTROL METHODS, AND PROGRAMS
    23.
    发明申请
    COMMUNICATION SYSTEMS, CONTROLS, CONTROL METHODS, AND PROGRAMS 有权

    公开(公告)号：US20250052848A1

    公开(公告)日：2025-02-13

    申请号：US18717550

    申请日：2021-12-21

    Applicant: Nippon Telegraph and Telephone Corporation

    Inventor： Ryota SHIINA ,  Shinya Tamaki ,  Tomohiro TANIGUCHI

    IPC: G01S1/70 ,  G16Y40/30 ,  G16Y40/60

    Abstract: An object of the present invention is to provide a communication system, a control device, a control method, and a program that can inexpensively acquire highly reliable sensor data. A communication system according to the present invention includes a control device, a plurality of lighting devices, and an IoT device. The lighting devices output modulated light beams that are modulated, the IoT device receives each of the modulated light beams, uses information obtained from each of the modulated light beams as metadata, and transmits, to the control device, the metadata and collected sensing data in association with each other, and the control device controls generation and output of the modulated light beams to the lighting devices, estimates a position of the IoT device from the metadata, and stores the position of the IoT device and the sensing data in association with each other.

    MONITORING SYSTEM, MONITORING METHOD, AND MONITORING PROGRAM
    26.
    发明公开
    MONITORING SYSTEM, MONITORING METHOD, AND MONITORING PROGRAM 审中-公开

    公开(公告)号：US20230215254A1

    公开(公告)日：2023-07-06

    申请号：US17927500

    申请日：2020-05-27

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Ryota SHIINA ,  Tomohiro TANIGUCHI ,  Shinya TAMAKI ,  Kazutaka HARA ,  Koji TSUJI ,  Tetsuya SUZUKI ,  Yasutaka KIMURA

    IPC: G08B13/196 ,  G06V20/52

    CPC classification number: G08B13/196 ,  G06V20/52

    Abstract: The present disclosure provides a monitoring system including an edge processing apparatus including a space distinct ID management database, a space distinct ID control unit, a storage unit, an analysis unit, and an abnormality determination unit, and a controller, a transmitter, and a camera with sensor that are installed in a location to be monitored, in which the space distinct ID management database stores a space distinct ID and a transmission time of the space distinct ID in association with the location to be monitored, the space distinct ID control unit acquires the space distinct ID associated with the location to be monitored from the space distinct ID management database and transmits the space distinct ID that is acquired to the controller in the associated location to be monitored, the controller transmits the space distinct ID acquired from the space distinct ID control unit to the transmitter, the transmitter generates a signal based on the space distinct ID acquired from the controller and diffuses, in a space of the location to be monitored, the signal that is generated, the camera with sensor includes a sensor that captures an image of the location to be monitored where the camera with sensor is installed and receives the signal diffused by the transmitter, and the camera with sensor transmits a received signal received by the sensor to the storage unit, the storage unit stores the received signal received from the camera with sensor in association with the location to be monitored where the camera with sensor is installed, the analysis unit extracts a space distinct ID from the received signal stored in the storage unit and transmits the space distinct ID that is extracted to the abnormality determination unit in association with the location to be monitored, and the abnormality determination unit compares and determines whether there is a match between the space distinct ID associated with the location to be monitored from the analysis unit and current time, and the space distinct ID and the transmission time of the space distinct ID associated with the location to be monitored that are stored in the space distinct ID management database.

    TERMINAL DEVICES, COMMUNICATION METHODS, AND COMMUNICATION SYSTEMS
    27.
    发明申请
    TERMINAL DEVICES, COMMUNICATION METHODS, AND COMMUNICATION SYSTEMS 有权

    公开(公告)号：US20230033853A1

    公开(公告)日：2023-02-02

    申请号：US17790990

    申请日：2020-01-23

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Ryota SHIINA ,  Tomohiro TANIGUCHI ,  Kazutaka HARA ,  Shinya TAMAKI ,  Tomoki MURAKAMI ,  Toshiro NAKAHIRA

    IPC: H04B10/11 ,  H04B10/80

    Abstract: An objective is to provide a terminal device, a communication method, and a communication system in which the time taken by connection operations/authentication operations does not increase proportionally with the pattern length, even if the transmitting side and the receiving side are not synchronized. A terminal device, a communication method, and a communication system according to the present invention create n pieces of signal information (n-bit patterns) by sequentially shifting each bit of a single piece of received signal information (n-bit pattern) one bit at a time. Through the above, signal information time-shifted by one bit each is obtained. Thus, even if the transmitting side and the receiving side are not synchronized, one of the n pieces of signal information is a signal synchronized with the transmitting side. Thereafter, the signal synchronized with the transmitting side can be detected by a brute-force calculation with the patterns (ID information) in the list.

    OPTICAL-RF HYBRID WIRELESS COMMUNICATION SYSTEM AND CONTROL METHOD
    29.
    发明申请
    OPTICAL-RF HYBRID WIRELESS COMMUNICATION SYSTEM AND CONTROL METHOD 有权

    公开(公告)号：US20210344422A1

    公开(公告)日：2021-11-04

    申请号：US17274383

    申请日：2019-08-27

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Ryota SHIINA ,  Kazutaka HARA ,  Satoshi IKEDA

    IPC: H04B10/112 ,  H04B10/079

    Abstract: The purpose of the present invention is to provide an optical/RF wireless hybrid communication system and a control method capable of solving the instability of link conditions of an RF wireless link and an optical wireless link. In the optical/RF wireless hybrid communication system and the control method according to the present invention, links for data transmission are not limited to one of an RF wireless link and an optical wireless link, the quality of link conditions is determined from signal quality received through channels of both the RF wireless link and the optical wireless link, and the distribution of data to be transmitted through the respective links is determined on the basis of the determination result. Thus, the links can be flexibly switched depending on the transmission conditions such as disturbance.

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