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    • 61. 发明授权
    • Optical line terminal communication method and device with data structure
    • 光线路终端通讯方式及数据结构设备
    • US09577783B2
    • 2017-02-21
    • US14600780
    • 2015-01-20
    • Furturewei Technologies, Inc.
    • Yuanqiu LuoBo GaoFrank Effenberger
    • H04J14/00H04J14/02
    • H04J14/0257H04B10/27H04J14/0256H04J14/0275H04J14/0282
    • An optical line terminal (OLT) coupled to a plurality of optical network units (ONUs) through a passive optical network (PON). The OLT includes a transceiver configured to communicate via a management channel of a communication network with a plurality of OLTs. The communication includes sending or receiving a notification, wherein the notification includes the following: a source OLT identifier associated with a source OLT sending the notification, wherein the source OLT is configured to communicate over a first channel at a first wavelength of the PON; a destination OLT identifier associated with a destination OLT receiving the notification, wherein the destination OLT is configured to communicate over a second channel at a second wavelength of the PON; and an ONU identifier associated with a first ONU associated with the notification.
    • 通过无源光网络(PON)耦合到多个光网络单元(ONU)的光线路终端(OLT)。 OLT包括被配置为经由通信网络的管理信道与多个OLT进行通信的收发机。 所述通信包括发送或接收通知,其中所述通知包括以下内容:与发送所述通知的源OLT相关联的源OLT标识符,其中所述源OLT被配置为在所述PON的第一波长处的第一信道上进行通信; 与接收到所述通知的目的地OLT相关联的目的地OLT标识符,其中所述目的地OLT被配置为在所述PON的第二波长处的第二信道上进行通信; 以及与与通知相关联的第一ONU相关联的ONU标识符。
    • 62. 发明授权
    • Routing in a WDM-based PON
    • 基于WDM的PON中的路由
    • US09544669B2
    • 2017-01-10
    • US14647433
    • 2012-12-04
    • Telefonaktiebolaget L M Ericsson (publ)
    • Patryk UrbanJiajia Chen
    • H04B10/00H04Q11/00H04J14/02H04B10/071G01M11/00
    • H04Q11/0067G01M11/3127G01M11/3136H04B10/071H04J14/0204H04J14/0238H04J14/0275H04J14/0282H04Q2011/0032
    • It is disclosed a remote node connectable to multiple feeder fibers from one or more central offices, COs, of a wavelength division multiplexing-based passive optical network, WDM-based PON. The remote node comprises one or more splitters each configured to receive a monitoring signal on a connected feeder fiber and to split the monitoring signal into split monitoring signals, wherein the monitoring signal uses one wavelength at a time out of a group of different wavelengths, and an arrayed waveguide grating, AWG, with output ports connectable to drop fibers. The AWG is configured to route the split monitoring signals to output ports of said AWG based on a currently used wavelength of said group of different wavelengths, for supervising drop fibers connected to the output ports. Also, a method for a remote node in the WDM-based PON, of routing a monitoring signal, is disclosed.
    • 公开了一种可连接到来自一个或多个基于波分复用的无源光网络WDM PON的中心局CO的多个馈线光纤的远程节点。 远程节点包括一个或多个分离器,每个分配器被配置为在连接的馈电光纤上接收监测信号,并将监测信号分离成分割监视信号,其中监测信号一​​次使用一组不同波长的波长,以及 阵列波导光栅,AWG,输出端口可连接到光纤。 AWG被配置为基于所述不同波长组的当前使用的波长将分离监视信号路由到所述AWG的输出端口,以监视连接到输出端口的丢弃光纤。 另外,公开了一种用于基于WDM的PON中的远程节点的路由监视信号的方法。
    • 68. 发明授权
    • System and method for network synchronization and frequency dissemination
    • 网络同步和频率传播的系统和方法
    • US09331844B2
    • 2016-05-03
    • US14119688
    • 2012-05-24
    • Roeland Johannus Marie Wilhelm NuijtsJeroen Cornelis Jean Koelemeij
    • Roeland Johannus Marie Wilhelm NuijtsJeroen Cornelis Jean Koelemeij
    • H04J14/00H04L7/00H04J3/06H04J14/02
    • H04L7/0075H04J3/0682H04J14/02H04J14/0272H04J14/0275
    • Distribution of reference frequency and timing information in a network involves determining latency between a first and second node from time delay between transmission of a reference frequency and timing signal and reception of an optical return timing signal in response. In a network with pairs of first and second optical fibers in optical fiber connections between network nodes, for transmission of optical data signals separately in mutually opposite directions between the network nodes respectively, provisions are made to transmit the reference frequency and timing signal and the resulting optical return signal via the same fiber, one in the same direction as the unidirectional data signal over that fiber and the other upstream. Repeaters between the nodes may be modified to pass such signals upstream and downstream. In an embodiment wherein the network provides for an optical supervisory channel, the optical filters for combining the optical supervisory channel signal with the unidirectional data signal and separating the optical supervisory channel signal from the unidirectional data signal are used to combine and separate the reference frequency and timing signal and to pass the optical return timing signal. For this purpose, further optical filters may be added outside the main optical data channel to combine and separate the reference frequency and timing signal and the optical supervisory channel and to pass the optical return signal back to the filter that separates the optical supervisory channel signal from the data signal.
    • 参考频率和定时信息在网络中的分布涉及从响应于参考频率的传输和定时信号之间的时间延迟以及接收光学返回定时信号来确定第一和第二节点之间的等待时间。 在网络节点之间的光纤连接中具有成对的第一和第二光纤的网络中,为了分别在网络节点之间彼此相反的方向上分别传输光数据信号,提供传输参考频率和定时信号,并且由此得到 通过相同光纤的光返回信号,一个在与该光纤上的单向数据信号相同的方向上,另一个在上游。 节点之间的中继器可以被修改以在上游和下游传递这样的信号。 在网络提供光学监控信道的实施例中,用于将光监控信道信号与单向数据信号组合并将光监控信道信号与单向数据信号分离的滤光器用于组合和分离参考频率和 定时信号并通过光学返回定时信号。 为此,可以将另外的光学滤波器添加到主光学数据通道外部,以组合和分离参考频率和定时信号和光学监控通道,并将光学返回信号传回到将光学监控通道信号与 数据信号。