公开(公告)号：US11848698B2

公开(公告)日：2023-12-19

申请号：US17733199

申请日：2022-04-29

申请人： HUAWEI TECHNOLOGIES CO., LTD.

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.

公开(公告)号：US11770203B2

公开(公告)日：2023-09-26

申请号：US17470355

申请日：2021-09-09

申请人： Ciena Corporation

发明人： Khaled Maamoun ,  Ahmad Abdo ,  Sadok Aouini ,  Bilal Riaz ,  Mahdi Parvizi

IPC分类号： H04J14/02

CPC分类号： H04J14/0227 ,  H04J14/0287

摘要： Systems and methods for controlling network configurations or assignments are provided. A method, according to one implementation, includes a step of calculating transmission characteristics between each pair of a plurality of pairs of modems at opposite ends of a Dense Wavelength-Division Multiplexing (DWDM) transport link using specifications of the modems measured during production. The method also includes the step of selecting a pair of modems from the plurality of pairs of modems based on results obtained by calculating the transmission characteristics and based on one or more user-defined service requests.

公开(公告)号：US11770186B2

公开(公告)日：2023-09-26

申请号：US17700474

申请日：2022-03-21

申请人： Infinera Corporation

发明人： Rajan Rao ,  Wayne Wauford ,  Vinesh Raghavan ,  Prasanjeet Khuntia

IPC分类号： H04B10/03 ,  H04B10/032 ,  H04J14/02 ,  G06F16/22 ,  H04B10/079 ,  G06Q30/018 ,  H04B10/25

CPC分类号： H04B10/032 ,  G06F16/22 ,  G06Q30/018 ,  H04B10/0795 ,  H04B10/25 ,  H04J14/02 ,  H04B10/03 ,  H04J14/0287

摘要： An optical network having a first terminal node, a second terminal node, and a network service system is described. The first terminal node has a plurality of ports and a signal restoration component to create a restored path. The second terminal node has a plurality of ports and a failure monitor to issue a path failure notice. A working path, a protection path, and the restored path are each fiber optic lines optically coupling the first terminal node to the second terminal node to enable a service, each path requiring a quantity of exclusive licenses. The network service system receives a path failure notice indicating a working path failure, calculates the quantity of licenses required by the restored path, releases the quantity of licenses required by the working path and applies at least a portion of the quantity of licenses to the quantity of licenses required by the restored path.

公开(公告)号：US09590724B2

公开(公告)日：2017-03-07

申请号：US14282879

申请日：2014-05-20

申请人： Futurewei Technologies, Inc.

发明人： Frank J. Effenberger ,  Lei Zong

IPC分类号： H04B10/00 ,  G02F1/00 ,  H04B10/032 ,  H04Q11/00 ,  H04L1/00 ,  H04L1/02 ,  H04J14/02

CPC分类号： H04B10/032 ,  H04J14/0282 ,  H04J14/0287 ,  H04L1/0045 ,  H04L1/02 ,  H04Q11/0067 ,  H04Q2011/0079 ,  H04Q2011/0081

摘要： A method for error detection within a passive optical network (PON), the method comprising receiving a first upstream optical signal that is copied at an optical splitter, converting the first upstream optical signal to a first electrical signal, receiving a second electrical signal that is converted from a second upstream optical signal that is copied at the optical splitter, and determining a corrected transmitted data stream using at least the first electrical signal and the second electrical signal, wherein the first upstream optical signal and the second upstream optical signal are copies of an upstream optical signal generated from a plurality of optical network units (ONUs).

摘要翻译： 一种在无源光网络（PON）内进行错误检测的方法，所述方法包括接收在光分路器处复制的第一上游光信号，将第一上游光信号转换为第一电信号，接收第二电信号， 从在光分路器上复制的第二上行光信号转换，以及使用至少第一电信号和第二电信号来确定校正的发送数据流，其中第一上游光信号和第二上行光信号是 从多个光网络单元（ONU）产生的上行光信号。

公开(公告)号：US20160352418A1

公开(公告)日：2016-12-01

申请号：US15237148

申请日：2016-08-15

申请人： Mark E. Boduch ,  Kimon Papakos

发明人： Mark E. Boduch ,  Kimon Papakos

IPC分类号： H04B10/032 ,  H04B10/40

CPC分类号： H04B10/032 ,  H04B10/038 ,  H04B10/40 ,  H04B2201/70703 ,  H04J14/026 ,  H04J14/0287

摘要： A method and apparatus for performing path protection for rate-adaptive optics is provided. As part of the method, an aggregate input bit stream is received. The aggregate input bit stream is then transmitted using a rate-adaptive optical transceiver when transmitting on a first optical path. When the first optical path has a fault, the aggregate input bit stream is then transmitted on a second optical path using the rate-adaptive optical transceiver and a fixed-rate optical transceiver.

公开(公告)号：US09485050B2

公开(公告)日：2016-11-01

申请号：US12961432

申请日：2010-12-06

申请人： Chris Wilhelm Barnard ,  Piotr Mylinski

发明人： Chris Wilhelm Barnard ,  Piotr Mylinski

IPC分类号： H04J14/02 ,  H04B10/572

CPC分类号： H04J14/0293 ,  H04B10/0793 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0201 ,  H04J14/0287 ,  H04L45/28 ,  H04L45/50 ,  H04Q11/0066 ,  H04Q2011/0081

摘要： The present invention includes novel techniques, apparatus, and systems for optical WDM communications. Tunable lasers are employed to generate respective subcarrier frequencies which represent subchannels of an ITU channel to which client signals can be mapped. In one embodiment, subchannels are polarization interleaved to reduce crosstalk. In another embodiment, polarization multiplexing is used to increase the spectral density. Client circuits can be divided and combined with one another before being mapped, independent of one another, to individual subchannels within and across ITU channels. A crosspoint switch can be used to control the client to subchannel mapping, thereby enabling subchannel protection switching and hitless wavelength switching. Network architectures and subchannel transponders, muxponders and crossponders are disclosed, and techniques are employed (at the subchannel level/layer), to facilitate the desired optical routing, switching, concatenation and protection of the client circuits mapped to these subchannels across the nodes of a WDM network.

摘要翻译： 本发明包括用于光WDM通信的新技术，装置和系统。 采用可调谐激光器来产生表示可以映射客户端信号的ITU信道的子信道的各个副载波频率。 在一个实施例中，子信道被极化交织以减少串扰。 在另一个实施例中，使用偏振复用来增加频谱密度。 客户端电路可以彼此独立地映射到ITU信道内和跨国际电联信道的各个子信道之间相互划分和组合。 可以使用交叉点开关来控制客户端到子通道映射，从而实现子通道保护切换和无中断波长切换。 公开了网络架构和子信道应答器，复用应答器和交叉应答器，并且采用技术（在子信道级/层），以便于映射到这些子信道上的这些子信道的客户端电路的期望的光路由，交换，级联和保护 WDM网络。

公开(公告)号：US09455779B2

公开(公告)日：2016-09-27

申请号：US14954324

申请日：2015-11-30

申请人： Mark E. Boduch ,  Kimon Papakos

发明人： Mark E. Boduch ,  Kimon Papakos

IPC分类号： H04B10/00 ,  H04J14/00 ,  H04J14/02 ,  H04B10/032 ,  H04B10/038 ,  H04B10/40

CPC分类号： H04B10/032 ,  H04B10/038 ,  H04B10/40 ,  H04B2201/70703 ,  H04J14/026 ,  H04J14/0287

摘要： A method and apparatus for performing path protection for rate-adaptive optics is provided. As part of the method, an aggregate input bit stream is received. The aggregate input bit stream is then transmitted using a rate-adaptive optical transceiver when transmitting on a first optical path. When the first optical path has a fault, the aggregate input bit stream is then transmitted on a second optical path using the rate-adaptive optical transceiver and a fixed-rate optical transceiver.

公开(公告)号：US09319131B2

公开(公告)日：2016-04-19

申请号：US14344007

申请日：2011-09-29

申请人： Massimiliano Maggiari ,  Michela Bevilacqua ,  Carla Marcenaro

发明人： Massimiliano Maggiari ,  Michela Bevilacqua ,  Carla Marcenaro

IPC分类号： H04B10/032 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04B10/032 ,  H04J14/0287 ,  H04Q11/0005 ,  H04Q2011/0043

摘要： A network management system manages preplanned alternative paths in a wavelength switched optical network for a traffic flow having a working path and two or more preplanned alternative paths from a source node to a destination node. A processing part determines if, after the fault, a number of available alternative paths for the respective traffic flow drops to a threshold. If so, a new alternative path is calculated and set up the new alternative path in the nodes, to enable one or more of the nodes to move the traffic flow onto the new alternative path in the event of further faults without waiting for input from the network management system. Thus multiple faults can be handled without the nodes needing to store details of so many such alternative paths. Otherwise, many such alternative paths are needed to take account of many different possible failure locations.

摘要翻译： 网络管理系统管理用于具有从源节点到目的地节点的工作路径和两个或更多个预先计划的替代路径的业务流的波长交换光网络中的预先设计的备选路径。 处理部分确定在故障之后，相应业务流的多个可用备用路径是否下降到阈值。 如果是，则计算新的替代路径并在节点中建立新的替代路径，以使得一个或多个节点能够在进一步的故障的情况下将业务流移动到新的备选路径上，而不等待来自 网络管理系统。 因此，可以处理多个故障，而不需要节点存储这么多这样的替代路径的细节。 否则，需要许多这样的替代路径来考虑许多不同的可能故障位置。

公开(公告)号：US20130243428A1

公开(公告)日：2013-09-19

申请号：US13875978

申请日：2013-05-02

申请人： FUJITSU LIMITED

发明人： Ryoichi MUTOH ,  Hiroyuki KITAJIMA

IPC分类号： H04J14/02

CPC分类号： H04J14/0287 ,  H04J3/1652 ,  H04J2203/0069 ,  H04J2203/0089

摘要： A frame transmitting apparatus includes a transmitting unit which transmits, when a change is made to a value in a predetermined field of a frame, the frame including the predetermined field with the changed value a predetermined number of times in succession. A frame receiving apparatus includes a receiving unit which receives the frame and an acceptance processing unit which recognizes the value in the predetermined field of the received frame and conducts acceptance processing. The acceptance processing unit compares, when the value is different from a currently accepted value, the value with an expected value; accepts the value when the value matches the expected value; and accepts, when the value does not match the expected value, the value after receiving the same value the predetermined number of times in succession.

摘要翻译： 帧发送装置包括发送单元，当对帧的预定字段中的值进行改变时，发送包括具有改变的值的预定字段的帧连续预定次数。 帧接收装置包括接收帧的接收单元和识别接收帧的预定字段中的值并进行接受处理的接收处理单元。 接受处理单元当该值与当前接受的值不同时，比较具有期望值的值; 当值与预期值匹配时接受该值; 并且当该值与期望值不匹配时，接受相同值后的值相继预定次数。

公开(公告)号：US08538256B2

公开(公告)日：2013-09-17

申请号：US12933175

申请日：2008-03-17

申请人： Elmar Trojer

发明人： Elmar Trojer

IPC分类号： G02F1/00

CPC分类号： H04J14/0287 ,  H04B10/272 ,  H04J3/0682 ,  H04J3/14 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0081 ,  H04Q2011/0088

摘要： The present invention relates to a method and devices for fast protection of an optical network system, in particular for a Passive Optical Network (PON), such as a Gigabit-capable Passive Optical Network (GPON). In the method, it is detected that the communication from a first optical network device is lost. Switching of functionality is initiated from a first optical line termination device to a second optical line termination device, and a control message is sent from the second optical line termination device to the first optical network device such that the first optical network device is prevented from moving into initial state. Furthermore, the method comprises determining and setting timing settings for the first optical network device.

摘要翻译： 本发明涉及用于光网络系统的快速保护的方法和设备，特别是对于诸如千兆位无源光网络（GPON）的被动光网络（PON）而言。 在该方法中，检测到来自第一光网络设备的通信丢失。 功能的切换从第一光线路终端设备发起到第二光线路终端设备，并且控制消息从第二光线路终端设备发送到第一光网络设备，使得防止第一光网络设备移动 进入初始状态。 此外，该方法包括确定和设置第一光网络设备的定时设置。