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    Optical communication network management apparatus
    1.
    发明授权
    Optical communication network management apparatus 有权

    公开(公告)号：US12034484B2

    公开(公告)日：2024-07-09

    申请号：US17797743

    申请日：2020-02-17

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Takafumi Tanaka ,  Hideki Nishizawa ,  Tetsuro Inui ,  Seiki Kuwabara ,  Shuto Yamamoto ,  Seiji Okamoto

    IPC分类号： H04B10/27 ,  H04B10/07 ,  H04L41/14 ,  H04L41/40

    CPC分类号： H04B10/27 ,  H04B10/07 ,  H04L41/14 ,  H04L41/40

    摘要： A virtual environment optical communication network is generated by setting configuration parameters of physical packages of a real environment optical communication network in package emulators that a computer program has virtually constructed to implement the physical packages, the real environment optical communication network being constructed by a plurality of node devices in which the physical packages are mounted, pieces of configuration data are generated based on pieces of resource data indicating resources required for optical paths detected based on acquired configuration parameters and a requested transmission mode, optical paths are set in the virtual environment optical communication network based on the generated pieces of configuration data, and optical paths are set in the real environment optical communication network based on the pieces of configuration data that have been used to set the optical paths.

    Method, device and program for estimating optical communication status
    2.
    发明授权
    Method, device and program for estimating optical communication status 有权

    公开(公告)号：US11923897B2

    公开(公告)日：2024-03-05

    申请号：US17783493

    申请日：2019-12-11

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Takayuki Nakachi ,  Yitu Wang ,  Tetsuro Inui ,  Takafumi Tanaka ,  Takahiro Yamaguchi ,  Katsuhiro Shimano

    IPC分类号： H04B10/079

    CPC分类号： H04B10/0795

    摘要： The present disclosure has an object of proposing a method and a device for estimating the state of a transmission path or an optical transmitter capable of mechanically estimating a factor causing an error with a small amount of constellation data and a low computing amount. The present disclosure provides a device for estimating a state of optical communication, the device including: a data preprocessing unit that reduces the number of data using random sampling with respect to constellation data in which an amplitude and a phase of optical communication data are represented by a polar coordinate diagram and performs distribution calculation and a dimension reduction; a learning unit that learns a dictionary matrix in sparse coding using learning constellation data processed by the data preprocessing unit; and a recognition unit that calculates a sparse coefficient using recognition constellation data processed by the data preprocessing unit and the dictionary matrix learned by the learning unit and estimates a factor causing degradation of the optical communication using the calculated sparse coefficient.

    Optical and electronic integrated switch
    5.
    发明授权
    Optical and electronic integrated switch 有权

    公开(公告)号：US11979694B2

    公开(公告)日：2024-05-07

    申请号：US17795603

    申请日：2020-01-30

    申请人： Nippon Telegraph and Telephone Corporation

    发明人： Osamu Moriwaki ,  Shunichi Soma ,  Keita Yamaguchi ,  Kenya Suzuki ,  Seiki Kuwabara ,  Tetsuro Inui ,  Shuto Yamamoto ,  Seiji Okamoto ,  Hideki Nishizawa

    IPC分类号： H04Q11/00

    CPC分类号： H04Q11/0071

    摘要： An optical and electronic integrated switch includes a network processor that controls the functions of the packet switch, a plurality of optical transceivers having photoelectric conversion functions, and a plurality of optical switches. The optical switches include different types of optical core switch and a plurality of optical-path selection switches. The optical transceivers provided near the processor have a regenerative relay function that regenerates optical signals and turns back the optical signals, and perform optical communication with a communication counterpart via the optical switches. In the optical communication, optical switches of the different types can cooperate to set paths for optical cut-through in which path selection is performed such that inputted optical signals are outputted without the intervention of the processor. This optical cut-through can be effectively performed without imposing a signal processing burden that consumes electric power on the processor.

    Optical and Electronic Integrated Switch and Optical Network System
    8.
    发明申请
    Optical and Electronic Integrated Switch and Optical Network System 有权

    公开(公告)号：US20230082854A1

    公开(公告)日：2023-03-16

    申请号：US17801130

    申请日：2020-02-26

    申请人： Nippon Telegraph and Telephone Corporation

    发明人： Hideki Nishizawa ,  Seiki Kuwabara ,  Seiji Okamoto ,  Shuto Yamamoto ,  Tetsuro Inui ,  Shunichi Soma ,  Kenya Suzuki ,  Osamu Moriwaki ,  Keita Yamaguchi

    IPC分类号： H04B10/61 ,  H04L45/00 ,  H04B10/2575

    摘要： A photo-electron fusion switch that can perform optical communications without any trouble, even when nodes of a communication source and a communication partner that are large in transmission capacity are connected, and makes it possible to realize a concentrated arrangement of devices having similar functions and reduce the communication processing time is connected to communication source's information processing devices and communication partner's information processing devices and information processing devices that are each different in transmission speed so as to configure an optical network system. The photo-electron fusion switch includes a network processor of an electronic circuit for controlling packet switch functions, a plurality of optical transmitter/receivers that can support coherent communications and has a photoelectric conversion function capable of transmitting and receiving optical signals different in transmission speed, an optical line switching device, and a plurality of multiplexing/separators. Each multiplexing/separator simultaneously transmits and receives respective optical signals different in transmission speed to and from the nodes via optical waveguides.

    Optical and Electronic Integrated Switch
    9.
    发明申请
    Optical and Electronic Integrated Switch 有权

    公开(公告)号：US20230073384A1

    公开(公告)日：2023-03-09

    申请号：US17795603

    申请日：2020-01-30

    申请人： Nippon Telegraph and Telephone Corporation

    发明人： Osamu Moriwaki ,  Shunichi Soma ,  Keita Yamaguchi ,  Kenya Suzuki ,  Seiki Kuwabara ,  Tetsuro Inui ,  Shuto Yamamoto ,  Seiji Okamoto ,  Hideki Nishizawa

    IPC分类号： H04Q11/00

    摘要： An optical and electronic integrated switch includes a network processor that controls the functions of the packet switch, a plurality of optical transceivers having photoelectric conversion functions, and a plurality of optical switches. The optical switches include different types of optical core switch and a plurality of optical-path selection switches. The optical transceivers provided near the processor have a regenerative relay function that regenerates optical signals and turns back the optical signals, and perform optical communication with a communication counterpart via the optical switches. In the optical communication, optical switches of the different types can cooperate to set paths for optical cut-through in which path selection is performed such that inputted optical signals are outputted without the intervention of the processor. This optical cut-through can be effectively performed without imposing a signal processing burden that consumes electric power on the processor.