公开(公告)号：US12119868B2

公开(公告)日：2024-10-15

申请号：US17972823

申请日：2022-10-25

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Jianyu Zheng ,  Yu Tian ,  Shimin Gao

IPC分类号： H04B10/077 ,  H04B10/032

CPC分类号： H04B10/0771 ,  H04B10/032

摘要： This application discloses an optical network system, a management device, an optical transmission apparatus, and a communications device, and belongs to the field of optical network technologies. A first communications device in the optical network system is configured to send physical information of the first communications device to a second communications device, where the physical information includes first module information of a first optical transmission apparatus. The second communications device is configured to determine a working status of the optical network system based on the first module information, second module information of a second optical transmission apparatus, and link information of an optical fiber link.

公开(公告)号：US12095499B2

公开(公告)日：2024-09-17

申请号：US18545430

申请日：2023-12-19

申请人： ORCKIT IP, LLC

发明人： Daniel Cohn ,  Rafi Ram

IPC分类号： H04L45/28 ,  H04B10/032 ,  H04L15/28 ,  H04L45/00 ,  H04L49/55 ,  H04Q11/00

CPC分类号： H04B10/032 ,  H04L15/28 ,  H04L45/28 ,  H04L45/68 ,  H04L49/557 ,  H04Q11/0066 ,  H04Q2011/0081

摘要： A method is presented for supporting SNCP over a packet network connecting to two SDH sub-networks and transporting one or more SDH paths that are SNCP-protected in both SDH sub-networks. The packet network connects to each of two sub-network interconnection points by a working path and a protection path. The packet sub-network may provide the same type of path protection as an SDH sub-network using SNCP, while avoiding bandwidth duplication.

公开(公告)号：US12040831B2

公开(公告)日：2024-07-16

申请号：US17917597

申请日：2020-04-14

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Hirotaka Ujikawa ,  Rintaro Harada ,  Shin Kaneko

IPC分类号： H04B10/03 ,  H04B10/032 ,  H04B10/275 ,  H04L43/0864 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04B10/032 ,  H04B10/2755 ,  H04L43/0864 ,  H04B10/03 ,  H04B10/275 ,  H04J14/0287 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q2011/0079 ,  H04Q2011/0081 ,  H04Q2011/0092

摘要： The present invention enables shortening the time required for resuming communication in a protection method that uses a backup path in an optical communication system that includes a master station device and multiple slave station devices. The slave station devices are connected to a loop path in parallel. The communication paths between the master station device and the slave station devices include a normal path and a backup path. First and second slave station devices are slave station devices that cannot perform communication via the normal path. The magnitude relationship between backup path RTTs is opposite to the magnitude relationship between normal path RTTs. If the second normal path RTT for the second slave station device is longer than the first normal path RTT for the first slave station device, the first backup path RTT is longer than the second backup path RTT, and the second backup path RTT is shorter than the first backup path RTT. Based on this fact, the master station device limits the QuietWindow, which is used in ranging processing for measuring the backup path RTT, to a size smaller than a predetermined maximum size.

公开(公告)号：US11973531B2

公开(公告)日：2024-04-30

申请号：US17916789

申请日：2020-04-09

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Rintaro Harada ,  Hirotaka Ujikawa ,  Shin Kaneko ,  Jun Terada

IPC分类号： H04B10/032

CPC分类号： H04B10/032

摘要： The present invention enables shortening the time required for resuming communication in a protection method that uses a backup path in an optical communication system that includes a master station device and multiple slave station devices. The slave station devices are connected to a loop path in parallel. The communication paths between the master station device and the slave station devices include a normal path and a backup path. The master station device executes communication control processing with respect to the slave station devices based on the RTTs. A first slave station device is a slave station device that cannot perform communication via the normal path. If the first slave station device is detected, the master station device calculates a first backup path for the first slave station device based on a first RTT between the master station device and the loop path, a loop RTT required for one full lap on the loop path, and the first normal path RTT for the first slave station device. The master station device then resumes communication control processing for the first slave station device based on the calculated first backup path RTT.

公开(公告)号：US20240056179A1

公开(公告)日：2024-02-15

申请号：US17766451

申请日：2019-10-30

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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

IPC分类号： H04B10/032 ,  H04Q11/00

CPC分类号： H04B10/032 ,  H04Q11/0062 ,  H04Q2213/08 ,  H04Q2011/0081

摘要： 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：US11902724B2

公开(公告)日：2024-02-13

申请号：US18094559

申请日：2023-01-09

申请人： Ciena Corporation

发明人： Choudhury A. Al Sayeed ,  Edward Chen ,  David Bownass ,  Joanne Wakefield

IPC分类号： H04B10/032 ,  H04Q11/00 ,  H04B10/25

CPC分类号： H04Q11/0067 ,  H04B10/25 ,  H04Q2011/0079

摘要： Systems and methods for resolving control conflicts in trunk protection links are provided. A head-end node includes a first line-mux controller and a second line-mux controller, first actuator components for a first fiber span, and second actuator components for a second fiber span, wherein the first line-mux controller and the second line-mux controller are configured to control the first actuator components and the second actuator components, respectively, and a trunk protection switch configured to connect an input to each of the first fiber span and the second fiber span.

公开(公告)号：US11870487B2

公开(公告)日：2024-01-09

申请号：US17958469

申请日：2022-10-03

申请人： ORCKIT IP, LLC

发明人： Daniel Cohn ,  Rafi Ram

IPC分类号： H04Q11/00 ,  H04L45/00 ,  H04L49/55 ,  H04L45/28 ,  H04B10/032 ,  H04L15/28

CPC分类号： H04B10/032 ,  H04L15/28 ,  H04L45/68 ,  H04L49/557 ,  H04Q11/0066 ,  H04Q2011/0081

摘要： A method is presented for supporting SNCP over a packet network connecting to two SDH sub-networks and transporting one or more SDH paths that are SNCP-protected in both SDH sub-networks. The packet network connects to each of two sub-network interconnection points by a working path and a protection path. The packet sub-network may provide the same type of path protection as an SDH sub-network using SNCP, while avoiding bandwidth duplication.

公开(公告)号：US20230362520A1

公开(公告)日：2023-11-09

申请号：US18024857

申请日：2020-09-11

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Hirotaka UJIKAWA ,  Tomoya HATANO ,  Yuka OKAMOTO ,  Sei KOU

IPC分类号： H04B10/032 ,  H04Q11/00

CPC分类号： H04Q11/0067 ,  H04B10/032 ,  H04Q11/0005 ,  H04L41/0677 ,  H04Q2011/0092

摘要： An optical communication system includes a looped path in which an active trunk fiber and a standby trunk fiber are connected in a loop. A plurality of optical combining/splitting units is provided on an active trunk fiber in series, and a plurality of slave devices is connected the plurality of optical combining/splitting units, respectively. A master device performs optical communication with each slave device. Each optical combining/splitting unit includes an optical sensor configured to detect an optical signal passing through an optical fiber and a transmitter. The transmitter determines whether or not there is an abnormality in optical communication on the basis of a detection state of the optical signal and transmits an abnormality notification including identification information of the optical combining/splitting unit to a monitoring apparatus in a case where there is an abnormality. The monitoring apparatus holds connection relationship information indicating a connection relationship between the plurality of optical combining/splitting units along the active trunk fiber. In a case where the monitoring apparatus receives the abnormality notification from at least one of the plurality of optical combining/splitting units, the monitoring apparatus specifies a failure position on a communication path on the basis of identification information of each optical combining/splitting unit that has transmitted the abnormality notification and the connection relationship information.

公开(公告)号：US20230308174A1

公开(公告)日：2023-09-28

申请号：US18022887

申请日：2020-08-24

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Shin KANEKO ,  Kazuaki HONDA ,  Hiroo SUZUKI ,  Junichi KANI ,  Takuya KANAI ,  Yasunari TANAKA

IPC分类号： H04B10/032 ,  H04B10/079

CPC分类号： H04B10/032 ,  H04B10/07957

摘要： The optical communication system includes the optical distribution device (100) provided between the wavelength routing device (30) and the optical multiplexing/demultiplexing device (40). The wavelength routing device outputs the optical signal input from the port on the wavelength variable subscriber device side to the port uniquely determined by a combination of the wavelength of the optical signal and the port to which the optical signal is inputted. The wavelength variable subscriber device can execute the first protection for switching the wavelength of the optical signal to be transmitted and received to the spare wavelength different from the operating wavelength when the wavelength variable subscriber device and the wavelength variable communication device (10) are disconnected. Then, the optical distribution device can execute the second protection for switching the optical fiber transmission path (50) to be used when the wavelength variable subscriber device and the wavelength variable communication device are disconnected.

公开(公告)号：US20230224031A1

公开(公告)日：2023-07-13

申请号：US18185327

申请日：2023-03-16

申请人： Arista Networks, Inc.

发明人： Alexey Kovsh ,  David Towne

IPC分类号： H04B10/079 ,  H04B10/40 ,  H04B10/032

CPC分类号： H04B10/07955 ,  H04B10/40 ,  H04B10/032

摘要： A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.