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公开(公告)号：US20240235667A1
公开(公告)日：2024-07-11
申请号：US18406809
申请日：2024-01-08
申请人： ECI Telecom Ltd.
发明人： INBAL HECHT , EFRAIM GELMAN , SHIREL EZRA , ZIV SHEM-TOV , HAYIM PORAT
IPC分类号： H04B10/038 , H04B10/27
CPC分类号： H04B10/038 , H04B10/27
摘要： A network management system can be configured to identify routes for satisfying a set of demands on an optical communication network using layer graph(s). The layer graph edges can have edge scores that indicate a cost of the edge. The network management system can generate the layer graph(s) using a network graph that represents the optical communication network and an associated sets of available frequency slots. The network management system can iteratively identify candidate path(s) on the layer graph(s) that correspond to each of the demands and determine a cost for each candidate path using the edge scores. In each iteration, the network management system can select the lowest cost candidate path, update the layer graph(s) based on this selection, and update the candidate paths for the remaining demands as needed. The network management system can similarly generate restoration paths for each of the demands.
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公开(公告)号：US12010468B2
公开(公告)日：2024-06-11
申请号：US17914856
申请日：2021-07-01
申请人： Ciena Corporation
IPC分类号： H04B10/00 , H04B10/038 , H04B10/079 , H04Q11/00 , H04J14/00
CPC分类号： H04Q11/0062 , H04B10/038 , H04B10/0795 , H04B10/07953 , H04Q2011/0081
摘要： Systems and methods include receiving (S11) data for a plurality of elements associated with an optical network; determining (S12) an incremental noise penalty for each element of the plurality of elements based on the received data; and storing (S13) the incremental noise penalty for each element of the plurality of elements. The steps can further include determining (S14) Signal-to-Noise Ratio (SNR) across an optical path in the optical network by concatenating associated incremental noise penalties for each element in the optical path along with corrections. The present disclosure includes a fast, nonlinear estimation process with improved accuracy for low loss spans compared to traditional closed-form GN models, as well as a method to determine the coherent nonlinear penalty in an arbitrary concatenation of mixed heterogeneous fibers which is not considered by existing fast nonlinear interference calculation methods.
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公开(公告)号：US11956010B2
公开(公告)日：2024-04-09
申请号：US17892498
申请日：2022-08-22
申请人： Google LLC
发明人： Zuowei Shen , Biao He , Hong Liu
IPC分类号： H04B10/00 , H04B10/038 , H04B10/073 , H04J14/00
CPC分类号： H04B10/038 , H04B10/0731
摘要： The technology generally relates to determining a status of an optical channel between two components. For example, the components may be connected via an optical link including a plurality of optical channels. A first portion of the optical channels may be in use such that a second portion of the optical channels may be redundant channels. The component may include a test generator that transmits and receives a data pattern over each channel. The test generator may determine, based on the received data pattern, a status of each of the channels. If the status of a given channel is a failure status, the component may divert data for the given channel to a redundant channel.
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公开(公告)号：US11848698B2
公开(公告)日：2023-12-19
申请号：US17733199
申请日：2022-04-29
发明人： Gang Xie , Hao Li , Xianlong Luo , Min Zhao , Haomian Zheng
IPC分类号： H04B10/032 , H04B10/038 , H04J14/02
CPC分类号： H04B10/032 , H04B10/038 , H04J14/0287
摘要： A path protection method includes receiving, by a source node of a first path, a path event notify message from a first node on the first path. The path event notify message includes indication information that the first path is predicted to fail. The path protection method further includes obtaining, by the source node, information about a predicted protection path. The information about the predicted protection path includes resource information of a second path useable to protect a service on the first path. The first path and the second path include the source node and a same sink node. The path protection method further includes storing, by the source node, the resource information of the second path.
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公开(公告)号：US20230388011A1
公开(公告)日：2023-11-30
申请号：US18324771
申请日：2023-05-26
IPC分类号： H04B10/038 , H04B10/40 , H04B10/50
CPC分类号： H04B10/038 , H04B10/40 , H04B10/503
摘要： A 10G rate OLT terminal transceiver integrated chip based on XGPON and EML laser includes: a burst mode receiver RX which amplifies an electrical signal originated each ONU client and processed through a burst mode receiver TIA, processes amplitude and frequency double-detection, and outputs the signal whose amplitude and waveform pulse width met the threshold requirements to a host, and comprises a fast recovery module to meet the timing sequence requirement of the XGPON protocol; a continuous mode transmitter TX which receives the electrical signal attenuated by a PCB board, and selects a bypass BYPASS path or a clock data recovery CDR path according to a degree of attenuation to drive the EML laser; a digital control unit DIGIITAL which provides control signals to the burst mode receiver RX and the continuous mode transmitter TX; and a power module POWER to supply working power to the chip.
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公开(公告)号：US20230146640A1
公开(公告)日：2023-05-11
申请号：US17914856
申请日：2021-07-01
申请人： Ciena Corporation
IPC分类号： H04B10/038 , H04B10/079
CPC分类号： H04B10/038 , H04B10/07953
摘要： Systems and methods include receiving (S11) data for a plurality of elements associated with an optical network; determining (S12) an incremental noise penalty for each element of the plurality of elements based on the received data; and storing (S13) the incremental noise penalty for each element of the plurality of elements. The steps can further include determining (S14) Signal-to-Noise Ratio (SNR) across an optical path in the optical network by concatenating associated incremental noise penalties for each element in the optical path along with corrections. The present disclosure includes a fast, nonlinear estimation process with improved accuracy for low loss spans compared to traditional closed-form GN models, as well as a method to determine the coherent nonlinear penalty in an arbitrary concatenation of mixed heterogeneous fibers which is not considered by existing fast nonlinear interference calculation methods.
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公开(公告)号：US20190238221A1
公开(公告)日：2019-08-01
申请号：US16381003
申请日：2019-04-11
IPC分类号： H04B10/038 , H04L12/703 , H04L12/701 , H04Q11/00 , H04L12/64 , H04L12/26 , H04L12/24
CPC分类号： H04B10/038 , H04L12/6418 , H04L41/0668 , H04L43/0882 , H04L45/00 , H04L45/28 , H04Q11/0066 , H04Q2011/0073 , H04Q2011/0083
摘要： A system for mapping a multilayer network having a server layer and a client layer is provided. The system includes a framework configured for comparing information obtained from a first traffic counter of a client port to information obtained from a second traffic counter of a server port to thereby determine if the client port and the server port are linked.
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公开(公告)号：US20190215060A1
公开(公告)日：2019-07-11
申请号：US16360379
申请日：2019-03-21
发明人： Haomian ZHENG , Yu ZHENG , Italo BUSI , Qinfen TAN , Qingcong LU
IPC分类号： H04B10/038 , H04B10/077
CPC分类号： H04B10/038 , H04B10/0771 , H04J3/14 , H04J2203/006 , H04L12/10 , Y02D50/30
摘要： The present disclosure discloses a protection switching method and a node. The method includes: receiving, by an intermediate node, a first protection switching request message sent by an upstream neighboring node, where the first protection switching request message is used to request to activate a first protection path, and the intermediate node is a node on the first protection path; determining, by the intermediate node, that the first protection path needs to occupy N1 timeslots, and selecting N1 timeslots for the first protection path from N2 available timeslots in a preset order; and sending, by the intermediate node, a second protection switching request message to the downstream neighboring node, where the second protection switching request message is used to request the downstream neighboring node to complete a cross-connection, on the first protection path, between the downstream neighboring node and the intermediate node based on the first group of timeslots.
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公开(公告)号：US20180278326A1
公开(公告)日：2018-09-27
申请号：US15992458
申请日：2018-05-30
发明人： David Antony Frisch
IPC分类号： H04B10/038 , H04B10/80 , H04B10/25 , H04Q11/00 , G02B6/35
CPC分类号： H04B10/038 , G02B6/3562 , H04B10/2504 , H04B10/80 , H04J14/0201 , H04Q11/0062 , H04Q2011/0081
摘要： An optical communications apparatus includes a branching unit and a switching module. The branching unit is configured to be connected to first, second, and third optical cables each including an optical fiber. The branching unit includes a branch optical path configured to route a fixed pre-determined range of wavelengths that are input to the branching unit from the optical fiber of the first cable to the optical fiber of the third cable. The switching module includes at least one optical switch having a bypass configuration and a branch connecting configuration. In the bypass configuration, a connection via the branch optical path to a distal portion of the third cable is bypassed. In the branch connecting configuration, the branch optical path is enabled so that the pre-determined range of wavelengths that are input to the branching unit are routed to the optical fiber of the distal portion of the third cable.
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公开(公告)号：US09853723B2
公开(公告)日：2017-12-26
申请号：US14786462
申请日：2013-09-24
申请人： SOLID, INC.
发明人： Tae Hyeong Kim , Jong Yeong Lim , Jongsin Kim , Eunho Lee
IPC分类号： G02F1/00 , H04B10/038 , H04B10/032
CPC分类号： H04B10/038 , H04B10/032
摘要： Disclosed is an optical network system including a upper network equipment, a lower network equipment, and a plurality of transfer network equipments connecting the upper network equipment and the lower network equipment through independent optical links, wherein the lower network equipment performs switching such that transmission and reception of an optical signal are performed through an optical link of a standby line when a failure occurs in at least one of an optical link used as a working line, an optical interface device associated with the working line in the upper network equipment, and a transfer network equipment associated with the working line.
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