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    Communication system and ONU system
    1.
    发明授权
    Communication system and ONU system 有权

    公开(公告)号：US12088978B2

    公开(公告)日：2024-09-10

    申请号：US17911736

    申请日：2020-03-19

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Tomoya Hatano ,  Keita Takahashi ,  Naotaka Shibata ,  Hiroko Nomura

    IPC: H04Q11/00 ,  H04B10/61

    CPC classification number: H04Q11/0067 ,  H04B10/614 ,  H04Q2011/0079

    Abstract: One aspect of the present invention is a communication system for a passive optical network that includes: an OLT system including a first OLT (Optical Line Terminal), a second OLT, and an OLT control apparatus that controls the first OLT and the second OLT; a plurality of splitters that are connected between the first OLT and the second OLT using optical communication channels; and ONU systems that are connected to the respective splitters using optical communication channels, and each include a first session establishing unit that establishes a session with the first OLT, a second session establishing unit that establishes a session with the second OLT, and a signal processing unit that executes signal processing of an ONU (Optical Network Unit) based on an optical signal output from the first session establishing unit or the second session establishing unit.

    Communication apparatus and communication method
    2.
    发明授权
    Communication apparatus and communication method 有权

    公开(公告)号：US11611470B2

    公开(公告)日：2023-03-21

    申请号：US17258416

    申请日：2019-07-05

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Takamitsu Tochino ,  Takashi Mitsui ,  Tomoya Hatano

    IPC: H04L41/0654 ,  H04L12/44 ,  H04L41/0686 ,  H04Q11/00

    Abstract: A communication device including a first communication device and a plurality of second communication devices in an optical access system in which a first communication device and the plurality of second communication devices perform communications with each other under a time division multiple access scheme includes an Ethernet controller configured to implement the communications as Ethernet (registered trademark) communications, and a link failure processing unit configured to output, in response to reception of a link failure notification for notifying occurrence of a link failure in the communications from the first communication device, a termination instruction to terminate data transmission when the communication device is performing the data transmission to the first communication device, and a start instruction to start the data transmission after recovery from the link failure when the communication device is not performing the data transmission to the first communication device.

    Information management system and information management method
    4.
    发明授权
    Information management system and information management method 有权

    公开(公告)号：US11388056B2

    公开(公告)日：2022-07-12

    申请号：US17052884

    申请日：2019-05-15

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Keita Nishimoto ,  Tomoya Hatano ,  Kota Asaka

    IPC: H04L41/0866 ,  H04L41/0813 ,  H04L41/084 ,  H04L41/085 ,  H04L41/0853

    Abstract: An information management system includes a first information storage configured to store first attribute information regarding a communication device, a second information storage configured to store second attribute information regarding the communication device, a related information storage configured to store information representing a relationship between the first attribute information and the second attribute information, a detector configured to detect update, addition, or deletion of the first attribute information or the second attribute information, and an updater configured to output a command for the update of the second attribute information associated with the first attribute information to the second information storage when the update of the first attribute information is detected, and to output a command for the update of the first attribute information associated with the second attribute information to the first information storage when the update of the second attribute information is detected.

    Failure determination system and failure determination method
    7.
    发明授权
    Failure determination system and failure determination method 有权

    公开(公告)号：US11876555B2

    公开(公告)日：2024-01-16

    申请号：US17601706

    申请日：2019-04-23

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Tomoya Hatano ,  Takumi Harada ,  Hiroo Suzuki

    IPC: H04B10/07 ,  H04B10/079 ,  H04B10/071

    CPC classification number: H04B10/0791 ,  H04B10/071 ,  H04B10/0793

    Abstract: A breakdown determination system includes a switching device that switches a transmission path of optical signals between an upper network and a lower network, one or more intermediate communication devices that relay communication between the upper network and the lower network, a selection device that selects a standby port of the intermediate communication devices, a measurement device that connects to the selected standby port via the switching device and measures an optical signal of the connected standby port, a determination device that determines whether an intermediate communication device including the selected standby port breaks down based on a result of measuring the optical signal, and a storage device that stores a result of determining whether the intermediate communication device breaks down.

    Generating setting information of physical ports based on communication speed
    8.
    发明授权
    Generating setting information of physical ports based on communication speed 有权

    公开(公告)号：US12160345B2

    公开(公告)日：2024-12-03

    申请号：US17623938

    申请日：2019-07-01

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Sei Kou ,  Tomoya Hatano

    IPC: H04L41/0896 ,  H04L49/00

    Abstract: A replacement management apparatus includes a detection section which detects a first communication speed and first setting information of a physical port used for connection for each of a communication apparatus to be replaced and a communication apparatus to be connected, and detects a second communication speed of a physical port used for connection for a replacing communication apparatus, and a generation section which generates second setting information of the physical port used for connection for each of the replacing communication apparatus and the communication apparatus to be connected based on the detected first communication speed, the detected second communication speed, and the detected first setting information.

    Multiplex transmission system and connection method between ports for multiplex transmission system
    9.
    发明授权
    Multiplex transmission system and connection method between ports for multiplex transmission system 有权

    公开(公告)号：US12095548B2

    公开(公告)日：2024-09-17

    申请号：US18012441

    申请日：2020-06-29

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Keita Takahashi ,  Hiroko Nomura ,  Naotaka Shibata ,  Tomoya Hatano

    IPC: H04J14/02 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H04Q11/04

    CPC classification number: H04J14/0289 ,  H04Q11/04 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H04Q2213/13292

    Abstract: Provided is a multiplex transmission system capable of preventing occurrence of a mistake on connection of a client device to a multiplex transmission device. The multiplex transmission system includes: a detection means configured to detect new client connection that is new connection of a client device to a client port of each of a first multiplex transmission device 100 and a second multiplex transmission device 200; and a switch control unit 340 configured to control a switch unit 330 to connect a client port where new client connection is detected at a first time point in the first multiplex transmission device 100 with a client port where new client connection is detected at a second time point in the second multiplex transmission device, when a time interval between the first time point at which new client connection is detected in the first multiplex transmission device 100 and the second time point at which new client connection is detected in the second multiplex transmission device 200 is within a preset reference time, in a case where new client connection is detected in both the first multiplex transmission device 100 and the second multiplex transmission device 200.

    Communication apparatus and communication method
    10.
    发明授权
    Communication apparatus and communication method 有权

    公开(公告)号：US11984930B2

    公开(公告)日：2024-05-14

    申请号：US17631417

    申请日：2019-08-02

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Tomoya Hatano ,  Manabu Yoshino

    IPC: H04B10/27 ,  H04L41/40 ,  H04Q11/00

    CPC classification number: H04B10/27 ,  H04L41/40 ,  H04Q11/0067

    Abstract: A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a platform for each component that realizes a function corresponding to a plurality of the networks, wherein the platform includes a common processing unit configured to execute processing that is not dependent on the network and a dependent processing unit for each network, the dependent processing unit being configured to execute processing that is dependent on the network.

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