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。

公开(公告)号：US08351790B2

公开(公告)日：2013-01-08

申请号：US12892915

申请日：2010-09-28

申请人： Yuhiro Midorikawa ,  Izumi Yokota

发明人： Yuhiro Midorikawa ,  Izumi Yokota

IPC分类号： H04J14/02

CPC分类号： H04J14/0287 ,  H04J14/0201 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217

摘要： An optical transmission system including: first, second, and third stations; a main transmission path that bi-directionally couples the first station with the second station; and an optical add/drop multiplexer (OADM) disposed on the main transmission path, the OADM branching light from the first and second station, combining light from the third station to the main transmission path; wherein the OADM includes an input determination unit and an optical path switching unit, the input determination unit detects the power of the lights, and determines whether each of the input lights is lost or not, and the optical path switching unit forms a loop-back route based on the determination.

摘要翻译： 一种光传输系统，包括：第一，第二和第三站; 将第一站与第二站双向耦合的主传输路径; 以及配置在所述主传输路径上的光分插复用器（OADM），所述OADM分支来自所述第一和第二站的光，将来自所述第三站的光组合到所述主传输路径; 其中所述OADM包括输入确定单元和光路切换单元，所述输入确定单元检测所述光的功率，并且确定每个输入光是否丢失，并且所述光路切换单元形成环回 路线基于确定。

公开(公告)号：US08213790B2

公开(公告)日：2012-07-03

申请号：US12783910

申请日：2010-05-20

申请人： Henning Hinderthür

发明人： Henning Hinderthür

IPC分类号： H04J14/00

CPC分类号： H04J14/0294 ,  H04B10/032 ,  H04J14/0287 ,  H04J2203/006

摘要： The present invention encompasses a method for 1+1 protection of an optical transmission path comprising a working path and a protection path that connect a first and second terminal node. In a working mode, an optical transmission signal is transmitted via the working path from the first to the second terminal node. At the second terminal node, the optical transmission signal is split into two optical sub-signals, and one of the optical sub-signals is sent via the protection path to a protection-path connection node as a working-path control signal. In the case of an interruption of the signal transmission via the working path, the protection-path connection node detects the absence of the working-path control signal and switches the system from the working mode to a protection mode in which signal transmission is conducted via a separate protection path.

摘要翻译： 本发明包括一种用于光传输路径的1 + 1保护的方法，包括连接第一和第二终端节点的工作路径和保护路径。 在工作模式中，光传输信号经由工作路径从第一终端节点传送到第二终端节点。 在第二终端节点，光传输信号被分成两个光子信号，其中一个光子信号经由保护路径被发送到作为工作路径控制信号的保护路径连接节点。 在经由工作路径的信号传输中断的情况下，保护路径连接节点检测到不存在工作路径控制信号，并将系统从工作模式切换到保护模式，其中信号传输通过 单独的保护路径。

公开(公告)号：US20110317997A1

公开(公告)日：2011-12-29

申请号：US13138543

申请日：2010-03-02

申请人： Yoshirou Satou

发明人： Yoshirou Satou

IPC分类号： H04B10/08

CPC分类号： H04J14/0275 ,  H04B10/0771 ,  H04B10/0791 ,  H04B2210/078 ,  H04J14/0213 ,  H04J14/0256 ,  H04J14/028 ,  H04J14/0287 ,  H04J14/0289

摘要： An apparatus for assessing a failure in a transmission path optical fiber includes: a detection unit which detects information on wavelength discontinuity of a signal wavelength and wavelength discontinuity of an SV wavelength of an own station; a transmission unit which periodically transmits the information detected by the detection unit to other stations; a collection unit which periodically receives and collects, in the own station, information on wavelength discontinuity and wavelength discontinuity of an SV wavelength detected by other stations; and an assessment unit which assesses a failure in a transmission path optical fiber based on the information detected by the detection unit and the information collected by the collection unit.

摘要翻译： 用于评估传输路径光纤故障的装置包括：检测单元，其检测关于本站的SV波长的信号波长和波长不连续性的波长不连续性的信息; 发送单元，其将由所述检测单元检测出的信息周期性地发送到其他站; 收集单元，在本站周期性地接收和收集由其他站检测到的SV波长的波长不连续性和波长不连续性的信息; 以及评估单元，其基于由检测单元检测到的信息和由收集单元收集的信息来评估传输路径光纤中的故障。