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公开(公告)号：US11190269B2
公开(公告)日：2021-11-30
申请号：US16661746
申请日：2019-10-23
IPC分类号： H04B10/038 , H04B10/079
摘要： A method for assigning spectral resources comprises assigning spectral resources for a plurality of communication channels. The spectral resources for the plurality of communication channels comprise excess resources that are at least tentatively kept unoccupied. The excess resources of a plurality of communication channels are assigned to be spectrally contiguous.
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公开(公告)号：US20210281932A1
公开(公告)日：2021-09-09
申请号：US17194062
申请日：2021-03-05
IPC分类号： H04Q11/00 , H04B10/038
摘要： Embodiments of the present disclosure include a pluggable optical line system module for amplification, multiplexing, and demultiplexing of coherent optical signals that can be integrated with a switch-router. Integration may include mechanical, electrical, and software control aspects. One example embodiment of the optical line system is in an industry standard small form factor pluggable module such as OSFP (octal small form factor pluggable) or QSFP (quad small form factor pluggable). When configured in a switch-router, the pluggable optical line is powered, managed and controlled by the switch-router which greatly reduces the cost, space, power and the management complexity of optical line systems.
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公开(公告)号：US11018771B2
公开(公告)日：2021-05-25
申请号：US14771998
申请日：2014-03-04
IPC分类号： H04B10/032 , H04B10/27 , H04J14/02 , H04Q11/00 , H04L12/28 , H04M11/06 , H04L12/24 , H04B10/038
摘要： Embodiments disclosed herein provide a hybrid fiber-copper access network in which a main OLT sends data to the DSLAMs via a plurality of point-to-point optical fiber connections. A standby OLT is provided which has a plurality of point-to-multi-point optical fiber connections to the DSLAMs. In the event of a failure, data can be sent to some of the DSLAMs via the standby OLT and the point-to-multi-point optical fiber connections. Following the rectification of the fault, the network can revert to its normal state and transmit data to the DSLAMs via the main OLT and the plurality of point-to-point optical fiber connections.
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公开(公告)号：US10826602B2
公开(公告)日：2020-11-03
申请号：US16832484
申请日：2020-03-27
发明人： Andrew Edwards , Martin Birk , Kathleen Tse , Gary Armiento
IPC分类号： H04B10/40 , H04B10/038 , H04L12/26 , H04B10/079 , H04L12/703 , H04L12/24 , H04L12/707
摘要： Concepts and technologies for multi-lane optical transport network recovery are provided herein. In an embodiment, a system includes a multi-lane optical transceiver. The multi-lane optical transceiver can include a transmitter optical sub-assembly, a receiver optical sub-assembly, and a controller that includes a processor and a memory that stores computer-executable instructions that, in response to execution by the processor, cause the processor to perform operations. The operations can include detecting an optical interruption event corresponding to an optical lane within a multi-lane optical path. The operations can further include instantiating an optical protocol alarm based on the optical interruption event. The operations can further include generating an optical protocol message based on the optical protocol alarm. The operations can further include instructing a peer multi-lane optical transceiver to alter optical transmission along the multi-lane optical path based on the optical protocol message.
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公开(公告)号：US10735090B2
公开(公告)日：2020-08-04
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： H04B10/00 , H04B10/038 , H04L12/10 , H04J3/14 , H04B10/077
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：US10560212B2
公开(公告)日：2020-02-11
申请号：US15985114
申请日：2018-05-21
申请人： Ciena Corporation
IPC分类号： H04B10/038 , H04J14/02
摘要： Systems and methods are in a node in a network utilizing a control plane for triggering mesh restoration due to intra-node faults, and include monitoring at least one channel at a degree at a plurality of degrees associated with the node; detecting a fault on the at least one channel, wherein the fault is an intra-node fault upstream of the degree; and transmitting a channel fault indicator downstream of the fault to at least one downstream node along a path of the faulted channel, wherein restoration is triggered based on the channel fault indicator.
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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：US10284290B2
公开(公告)日：2019-05-07
申请号：US14871586
申请日：2015-09-30
IPC分类号： H04B10/038 , H04B10/077 , H04L12/24 , H04L12/707 , H04Q11/00 , H04J14/02
摘要： In some examples, a network device comprises one or more processors operably coupled to a memory, and a routing unit configured for execution by the one or more processors to route data traffic on a layer 3 network overlaying an optical transport system; receive optical supervisory channel data for an optical supervisory channel of the optical transport system; determine the optical supervisory channel data indicates an event affecting transmission or detection of a signal transported by a wavelength, the wavelength traversing an optical fiber of the optical transport system and underlying a link of the layer 3 network; and reconfigure, in response to determining the optical supervisory channel data indicates the event, a configuration of the network device to modify routing operations of the network device with respect to the data traffic on the layer 3 network.
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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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