公开(公告)号：US20170324472A1

公开(公告)日：2017-11-09

申请号：US15526835

申请日：2015-11-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kei KITAMURA ,  Takafumi HAMANO ,  Takashi KOTANIGAWA ,  Kaoru ARAI ,  Masahiro YOKOTA ,  Hideki MAEDA ,  Yoshiaki YAMADA ,  Takuya OHARA ,  Kengo SHINTAKU

IPC: H04B10/032 ,  H04J3/16

CPC classification number: H04B10/032 ,  H04B1/74 ,  H04B10/03 ,  H04J3/00 ,  H04J3/14 ,  H04J3/16

Abstract: A framer in a transmission device allocates plural optical channel time slots to a plurality of logical prioritized paths. It allocates received client signals to the allocated time slots, and transmits the client signals by a plurality of optical subcarriers that use a plurality of optical wavelengths corresponding to the plurality of time slots. The framer includes: a time slot allocation unit that, in a case where an optical wavelength corresponding to a time slot allocated to a logical path having a high transmission priority is not used, allocates at least one of the plurality of time slots to the logical path having the high transmission priority while the time slot corresponding to the unused optical wavelength is avoided, to change the time slot allocated to the logical path having the high transmission priority.

公开(公告)号：US20240056179A1

公开(公告)日：2024-02-15

申请号：US17766451

申请日：2019-10-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kei KITAMURA ,  Fumikazu INUZUKA ,  Kengo SHINTAKU ,  Takafumi TANAKA ,  Takuya ODA

IPC: H04B10/032 ,  H04Q11/00

CPC classification number: H04B10/032 ,  H04Q11/0062 ,  H04Q2213/08 ,  H04Q2011/0081

Abstract: A transmission apparatus includes a first communication unit, a second communication unit, a detection unit, a control unit, and a selection unit. The first communication unit uses a first path for communication, when electric power is supplied. The second communication unit uses a second path for communication, when electric power is supplied. The detection unit detects a fault predictive sign. The control unit supplies no electric power to the second communication unit when the detection unit does not detect the fault predictive sign. The control unit starts supplying electric power to the second communication unit and performs normality confirmation of the second path when the detection unit detects the fault predictive sign, before switching from the first path to the second path. The selection unit selects and outputs, when the first communication unit and the second communication unit have received signals, either the signal received by the first communication unit or the signal received by the second communication unit.

公开(公告)号：US20170257169A1

公开(公告)日：2017-09-07

申请号：US15528629

申请日：2015-11-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kei KITAMURA ,  Takashi KOTANIGAWA ,  Takafumi HAMANO ,  Kaoru ARAI ,  Masahiro YOKOTA ,  Hideki MAEDA ,  Yoshiaki YAMADA ,  Takuya OHARA ,  Kengo SHINTAKU

IPC: H04B10/50 ,  H04J14/08

CPC classification number: H04B10/50 ,  H04B10/03 ,  H04J3/00 ,  H04J3/16 ,  H04J14/08

Abstract: There is provided a tray which is connected to a plurality of transmitters that multicarrier-transmit a plurality of parallel signals by optical subcarriers. The framer selects time slots to be allocated to a path to be accommodated such that the number of optical subcarriers corresponding to the time slots satisfies a predetermined condition on the basis of empty time slots which are specified by path accommodation information indicating a correspondence between paths allocated to a client signal and time slots in a signal frame and the optical subcarriers corresponding to the empty time slots indicated by time slot information indicating a correspondence between the time slots and the optical subcarriers, and sets the selected time slot in the path accommodation information. The framer sets a client signal to the time slots on the basis of the path accommodation information.

公开(公告)号：US20240275671A1

公开(公告)日：2024-08-15

申请号：US18565892

申请日：2021-06-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takuya ODA ,  Takuya OHARA ,  Fumikazu INUZUKA ,  Katsuaki HIGASHIMORI ,  Kengo SHINTAKU

IPC: H04L41/0816 ,  H04B10/27 ,  H04L41/40

CPC classification number: H04L41/0816 ,  H04B10/27 ,  H04L41/40

Abstract: A communication system is a communication system that includes: a plurality of transmission devices; a setting server that receives an instruction to change data related to setting of a data network; and a control server that performs a control process related to the plurality of transmission devices and the data network on a basis of the data. In the communication system, a setting processing unit is provided to perform a process for constructing a customer control network between a first transmission device and the setting server by using a second transmission device as a relay device, when the first transmission device and the second transmission device are connected by an optical transmission line. The first transmission device includes: a connection processing unit that performs a process for constructing a control network between the first transmission device and the control server by using the second transmission device as a relay device, when the first transmission device and the second transmission device are connected by the optical transmission line; and a device control unit that performs a process for constructing the data network for the first transmission device by using the second transmission device as a relay device, when the first transmission device and the second transmission device are connected by the optical transmission line.

公开(公告)号：US20240187763A1

公开(公告)日：2024-06-06

申请号：US18286415

申请日：2021-04-21

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kengo SHINTAKU ,  Takuya OHARA ,  Fumikazu INUZUKA ,  Takuya ODA ,  Katsuaki HIGASHIMORI

IPC: H04Q11/00 ,  H04B10/27

CPC classification number: H04Q11/0062 ,  H04B10/27 ,  H04Q2011/0064 ,  H04Q2011/0086

Abstract: A transmission device, which is provided between user devices and transmits a client signal transmitted by the user devices through an optical transmission network, the transmission device comprising: a setting unit of setting a path having a band for accommodating the client signal obtained from a monitoring result of a control signal transmitted and received at a time of negotiation between the user devices; and a transfer unit of transferring the client signal using the path set by the setting unit.

公开(公告)号：US20220321210A1

公开(公告)日：2022-10-06

申请号：US17632589

申请日：2019-08-05

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kei KITAMURA ,  Fumikazu INUZUKA ,  Kengo SHINTAKU ,  Takuya ODA ,  Takafumi TANAKA ,  Masahito TOMIZAWA

IPC: H04B10/032

Abstract: A transmission apparatus includes a control unit for carrying out processing to secure a resource for a standby system path in response to detection of a sign of failure in an active system path.

公开(公告)号：US20250150551A1

公开(公告)日：2025-05-08

申请号：US18294425

申请日：2021-08-06

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takuya OHARA ,  Kengo SHINTAKU ,  Takuya ODA ,  Katsuaki HIGASHIMORI ,  Fumikazu INUZUKA

IPC: H04N7/035 ,  H04J99/00

Abstract: One aspect of the present invention is an information processing system including an information apparatus configured to process and transmit a signal, and a reception device configured to process the signal transmitted by the information apparatus and to output the processed signal to a UI device, wherein the information apparatus includes one or a plurality of mapping units configured to generate and map a signal having a frame structure suitable for communication with respect to a signal to be transmitted, a multiplexing unit configured to multiplex the signal mapped by the mapping units through a predetermined method, and a transmission unit configured to transmit the signal multiplexed by the multiplexing unit to the reception device, and the reception device includes a reception unit configured to receive the signal transmitted by the information apparatus, a separation unit configured to separate the multiplexed signal received by the reception unit, and one or a plurality of demapping units configured to generate a data signal from the frame structure.

公开(公告)号：US20220345398A1

公开(公告)日：2022-10-27

申请号：US17763693

申请日：2019-09-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kengo SHINTAKU ,  Shokei KOBAYASHI ,  Fumikazu INUZUKA ,  Kei KITAMURA ,  Takuya ODA ,  Takafumi TANAKA

IPC: H04L45/28 ,  H04L45/12

Abstract: A transfer device includes a detection unit configured to detect a sign of a failure in a link between transfer devices, and a management unit configured to update a routing table to lower a priority of a path via the link when the sign of the failure is detected by the detection unit.

公开(公告)号：US20170366288A1

公开(公告)日：2017-12-21

申请号：US15527274

申请日：2015-11-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Masahiro YOKOTA ,  Takafumi HAMANO ,  Takashi KOTANIGAWA ,  Kaoru ARAI ,  Kei KITAMURA ,  Hideki MAEDA ,  Yoshiaki YAMADA ,  Takuya OHARA ,  Kengo SHINTAKU

IPC: H04J3/16 ,  H04J14/08 ,  H04L12/801 ,  H04L12/939

CPC classification number: H04J3/1652 ,  H04B10/03 ,  H04J3/14 ,  H04J14/00 ,  H04J14/02 ,  H04J14/08 ,  H04L47/34 ,  H04L49/552

Abstract: A framer in a transmission device that allocates time slots of an optical channel to a logical path, divides client signals received via the logical path to the time slots allocated to the logical path, and transmits the client signals by a plurality of optical suhcarriers using optical wavelengths correlated with the time slots includes: a time slot allocating unit configured to perform a process of reducing a transmission band of the logical path when some of the optical wavelengths are unavailable and changing the time slots allocated to the logical path depending on the reduced transmission band to avoid using the time slots corresponding to the unavailable optical wavelengths.

公开(公告)号：US20170324496A1

公开(公告)日：2017-11-09

申请号：US15526927

申请日：2015-11-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yoshiaki YAMADA ,  Kengo SHINTAKU ,  Takuya OHARA ,  Kei KITAMURA ,  Takashi KOTANIGAWA ,  Takafumi HAMANO ,  Kaoru ARAI ,  Masahiro YOKOTA ,  Hideki MAEDA

IPC: H04J3/06 ,  H04J14/02 ,  H04J3/16 ,  H04J14/08

CPC classification number: H04J3/0652 ,  H04J3/0623 ,  H04J3/07 ,  H04J3/1652 ,  H04J14/00 ,  H04J14/02 ,  H04J14/08 ,  H04J2203/006

Abstract: In the optical transport system a transport frame generator divides a transport frame accommodating plural client signals into plural transmission signals. Subcarrier transmission units convert the signals into optical signals using different optical carriers and transmit the converted optical signals. Subcarrier reception units receive the transmitted optical signals and convert the optical signals into reception signals. A transport frame termination unit combines the reception signals to restore the transport frame. A time-demultiplexing processor time-demultiplexes the restored transport frame to be separated into the client signals. A time slot control unit determines a new time slot allocation when time-multiplexing the client signals in the transport frame and stops supply of electric power to a subcarrier transmission unit and a subcarrier reception unit that transmit and receive an optical signal to which the client signals are not allocated.