利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

27 条记录 (耗时 0.023 秒)

    Method and system for mitigating Raman crosstalk in an Ethernet passive optical network
    1.
    发明授权
    Method and system for mitigating Raman crosstalk in an Ethernet passive optical network 有权
    以太网无源光网络中减轻拉曼串扰的方法和系统

    公开(公告)号：US07660528B2

    公开(公告)日：2010-02-09

    申请号：US11431342

    申请日：2006-05-09

    申请人： Ryan E. Hirth ,  Lowell D. Lamb ,  Glen Kramer ,  Benjamin J. Brown

    发明人： Ryan E. Hirth ,  Lowell D. Lamb ,  Glen Kramer ,  Benjamin J. Brown

    IPC分类号： H04J14/02 ,  H04B10/24

    CPC分类号： H04J14/0226 ,  H04B10/2537 ,  H04B10/27 ,  H04B10/272 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0283

    摘要： One embodiment of the present invention provides a system for mitigating Raman crosstalk between downstream data and video transmission in an Ethernet passive optical network (EPON), wherein the EPON includes an optical line terminal (OLT) and one or more optical network units (ONU's). During operation, the system transmits a data stream from the OLT to the ONU's on a first wavelength that is substantially at 1490 nm. The system also transmits a video signal stream from the OLT to the ONU's on a second wavelength that is substantially at 1550 nm. The system modifies the bit sequence for the data stream to change the power spectral distribution (PSD) for the data stream, thereby reducing power spectral content in the frequency range where significant Raman crosstalk can occur between data and video signal streams.

    摘要翻译： 本发明的一个实施例提供了一种用于减轻以太网无源光网络（EPON）中的下行数据和视频传输之间的拉曼串扰的系统，其中EPON包括光线路终端（OLT）和一个或多个光网络单元（ONU） 。 在运行期间，系统以基本上为1490nm的第一波长从OLT向ONU发送数据流。 该系统还将基于1550nm的第二波长的视频信号流从OLT发送到ONU。 该系统修改数据流的比特序列以改变数据流的功率谱分布（PSD），从而降低在数据和视频信号流之间可能出现显着的拉曼串扰的频率范围内的功率谱含量。

    Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network
    2.
    发明授权
    Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network 有权
    用于促进以太网无源光网络中的非对称线路速率的方法和装置

    公开(公告)号：US07525982B2

    公开(公告)日：2009-04-28

    申请号：US11228879

    申请日：2005-09-16

    申请人： Glen Kramer ,  Edward W. Boyd ,  Ryan E. Hirth ,  Lawrence D. Davis ,  Lowell D. Lamb

    发明人： Glen Kramer ,  Edward W. Boyd ,  Ryan E. Hirth ,  Lawrence D. Davis ,  Lowell D. Lamb

    IPC分类号： H04L12/28

    CPC分类号： H04J3/0652

    摘要： One embodiment of the present invention provides a method for facilitating asymmetric line rates in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system provides a downstream code-group clock, wherein each cycle thereof corresponds to a code group transmitted from the central node to a remote node. The system also provides an upstream code-group clock, wherein each cycle thereof corresponds to a code group received at the central node from a remote node. In addition, the system provides a multi-point control protocol (MPCP) clock, wherein the frequency ratio of the MPCP clock to the downstream code-group clock is different from the frequency ratio of the MPCP clock to the upstream code-group clock, thereby allowing the downstream transmission to be performed at a faster line rate than the upstream transmission line rate.

    摘要翻译： 本发明的一个实施例提供一种用于促进包括中央节点和至少一个远程节点的以太网无源光网络（EPON）中的非对称线路速率的方法。 在操作期间，系统提供下游代码组时钟，其中每个周期对应于从中央节点发送到远程节点的代码组。 该系统还提供上行代码组时钟，其中每个周期对应于从远程节点在中央节点接收的代码组。 另外，该系统提供多点控制协议（MPCP）时钟，其中MPCP时钟与下游码组时钟的频率比不同于MPCP时钟与上行代码组时钟的频率比， 从而允许以比上行传输线路速率更快的线路速率执行下游传输。

    Passive optical fiber plant analysis
    3.
    发明授权
    Passive optical fiber plant analysis 有权
    无源光纤工厂分析

    公开(公告)号：US08913887B2

    公开(公告)日：2014-12-16

    申请号：US13483944

    申请日：2012-05-30

    申请人： Ryan E. Hirth ,  Lowell D. Lamb

    发明人： Ryan E. Hirth ,  Lowell D. Lamb

    IPC分类号： H04B10/08

    CPC分类号： H04B10/071 ,  H04B10/0771 ,  H04Q11/0067 ,  H04Q2011/0083 ,  H04Q2011/0086

    摘要： In a first aspect, the method and apparatus of the present disclosure can be used to periodically and/or intermittently place one or more ONUs attached to a PON in a power savings mode so that an OTDR test can be performed. While in the power savings mode, the ONUs temporarily suspend their transmitter function and power down their upstream lasers. In a second aspect, the method and apparatus of the present disclosure can be used to coordinate the performance of OTDR during one or more periodic or intermittent discovery slots used to detect and register ONUs recently connected to the PON. Because new ONUs are infrequently connected to the PON and ONUs already registered are not permitted to transmit during the discovery windows, OTDR can be performed during these windows without impacting, to a great degree, the normal operation of the PON.

    摘要翻译： 在第一方面，本公开的方法和装置可以用于周期性地和/或间歇地将附接到PON的一个或多个ONU放置在省电模式中，使得可以执行OTDR测试。 在省电模式下，ONU暂时中止其发射机功能并关闭其上行激光器。 在第二方面，本公开的方法和装置可以用于在用于检测和注册最近连接到PON的ONU的一个或多个周期性或间歇发现时隙期间协调OTDR的性能。 由于新的ONU不频繁地连接到PON，并且在发现窗口期间不允许发送已经注册的ONU，所以在这些窗口中可以执行OTDR，而在很大程度上不影响PON的正常操作。

    Supporting multi-dwelling units in passive optical networks
    4.
    发明授权
    Supporting multi-dwelling units in passive optical networks 有权
    支持无源光网络中的多住宅单元

    公开(公告)号：US08494364B2

    公开(公告)日：2013-07-23

    申请号：US12574920

    申请日：2009-10-07

    申请人： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

    发明人： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

    IPC分类号： H04B10/20 ,  H04J14/00

    CPC分类号： H04L47/10 ,  H04B10/0773 ,  H04L47/22 ,  H04L47/2408 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

    摘要： One embodiment provides a system for controlling flow rate in an EPON. The system includes an OLT, an ONUs coupled to the OLT via a passive optical splitter, a switch coupled to a port located on the ONU, and a flow-control mechanism. The ONU includes one or more queues corresponding to one or more classes of Services, and one or more ports. The switch includes a plurality of UNI ports, and the switch is configured to switch one or more upstream traffic flows belonging to the one or more classes of services from the plurality of UNI ports. The flow-control mechanism is configured to set a flow rate of an upstream traffic flow of certain class of service originated from a UNI port. The flow-control mechanism sets the flow rate based on status of an ONU queue corresponding to the class of service of the upstream traffic flow.

    摘要翻译： 一个实施例提供了一种用于控制EPON中的流量的系统。 该系统包括OLT，经由无源光分路器耦合到OLT的ONU，耦合到位于ONU上的端口的开关和流控制机构。 ONU包括与一个或多个服务类别对应的一个或多个队列，以及一个或多个端口。 所述交换机包括多个UNI端口，并且所述交换机被配置为从所述多个UNI端口切换属于所述一个或多个服务类别的一个或多个上游业务流。 流控制机制被配置为设置从UNI端口发起的某一类业务的上行业务流的流量。 流量控制机制根据与上游业务流的业务类别对应的ONU队列的状态设置流量。

    Method and apparatus for delineating data in an FEC-coded Ethernet frame
    7.
    发明授权
    Method and apparatus for delineating data in an FEC-coded Ethernet frame 有权
    用于在FEC编码的以太网帧中描绘数据的方法和装置

    公开(公告)号：US07152199B2

    公开(公告)日：2006-12-19

    申请号：US10866399

    申请日：2004-06-12

    申请人： Hung C. Nuyen ,  Glen Kramer ,  Ryan E. Hirth

    发明人： Hung C. Nuyen ,  Glen Kramer ,  Ryan E. Hirth

    IPC分类号： H03M13/00

    CPC分类号： H04L1/0083 ,  H04L1/0057 ,  H04L7/048

    摘要： One embodiment of the present invention provides a system that facilitates construction of a forward error correction (FEC) coded Ethernet frame. The system generates a number of FEC parity bits for the conventional Ethernet frame and inserts a start sequence before the conventional Ethernet frame. Next, the system appends an even- or odd-delimiter to the conventional Ethernet frame. The even-delimiter and the odd-delimiter are selected such that there is a sufficiently large Hamming distance between them, thereby reducing the probability of mistaking the even-delimiter for the odd-delimiter, or mistaking the odd-delimiter for the even-delimiter, if bit error occurs.

    摘要翻译： 本发明的一个实施例提供了一种有助于构建前向纠错（FEC）编码以太网帧的系统。 该系统为常规以太网帧生成多个FEC奇偶校验位，并在常规以太网帧之前插入起始序列。 接下来，系统将偶数或奇数分隔符附加到常规以太网帧。 偶数分隔符和奇数分隔符被选择为使得它们之间具有足够大的汉明距离，从而减少了奇数分隔符的偶数分隔符错误的概率，或者将奇数分隔符误认为偶分隔符 ，如果发生位错误。

    Dynamic management of polling rates in an ethernet passive optical network (EPON)
    8.
    发明授权
    Dynamic management of polling rates in an ethernet passive optical network (EPON) 有权
    以太网无源光网络（EPON）中的轮询速率动态管理

    公开(公告)号：US08548327B2

    公开(公告)日：2013-10-01

    申请号：US12967755

    申请日：2010-12-14

    申请人： Ryan E. Hirth ,  Glen Kramer

    发明人： Ryan E. Hirth ,  Glen Kramer

    IPC分类号： H04J14/00 ,  H04Q11/00

    CPC分类号： H04Q11/0067 ,  H04Q2011/0064

    摘要： A system in an Optical Line Terminal (OLT) to dynamically manage polling rates in a passive optical network is provided herein. The system includes a Media Access Control (MAC) unit that is configured to receive a first message from an Optical Network Unit (ONU). The first message includes a status of an upstream queue of the ONU. The system includes a traffic monitor unit coupled to the MAC unit and is configured to receive the first message from the MAC unit and place the upstream queue of the ONU in an inactive mode if the status of the upstream queue indicates that the upstream queue is empty.

    摘要翻译： 本文提供了在无线光网络中动态管理轮询速率的光线路终端（OLT）中的系统。 该系统包括被配置为从光网络单元（ONU）接收第一消息的媒体访问控制（MAC）单元。 第一个消息包括ONU的上行队列的状态。 所述系统包括耦合到所述MAC单元的业务监控单元，并且被配置为从所述MAC单元接收所述第一消息，并且如果所述上行队列的状态指示所述上行队列为空，则将所述ONU的上游队列置于非活动模式 。

    SUPPORTING MULTI-DWELLING UNITS IN PASSIVE OPTICAL NETWORKS
    9.
    发明申请
    SUPPORTING MULTI-DWELLING UNITS IN PASSIVE OPTICAL NETWORKS 有权
    在被动光网络中支持多重单元

    公开(公告)号：US20100098414A1

    公开(公告)日：2010-04-22

    申请号：US12574920

    申请日：2009-10-07

    申请人： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

    发明人： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

    IPC分类号： H04L12/26 ,  H04J14/00

    CPC分类号： H04L47/10 ,  H04B10/0773 ,  H04L47/22 ,  H04L47/2408 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

    摘要： One embodiment provides a system for controlling flow rate in an EPON. The system includes an OLT, an ONUs coupled to the OLT via a passive optical splitter, a switch coupled to a port located on the ONU, and a flow-control mechanism. The ONU includes one or more queues corresponding to one or more classes of Services, and one or more ports. The switch includes a plurality of UNI ports, and the switch is configured to switch one or more upstream traffic flows belonging to the one or more classes of services from the plurality of UNI ports. The flow-control mechanism is configured to set a flow rate of an upstream traffic flow of certain class of service originated from a UNI port. The flow-control mechanism sets the flow rate based on status of an ONU queue corresponding to the class of service of the upstream traffic flow.

    摘要翻译： 一个实施例提供了一种用于控制EPON中的流量的系统。 该系统包括OLT，经由无源光分路器耦合到OLT的ONU，耦合到位于ONU上的端口的开关和流控制机构。 ONU包括与一个或多个服务等级对应的一个或多个队列，以及一个或多个端口。 所述交换机包括多个UNI端口，并且所述交换机被配置为从所述多个UNI端口切换属于所述一个或多个服务类别的一个或多个上游业务流。 流控制机制被配置为设置从UNI端口发起的某一类业务的上行业务流的流量。 流量控制机制根据与上游业务流的业务类别对应的ONU队列的状态设置流量。

    Method for data encryption in an ethernet passive optical network
    10.
    发明授权
    Method for data encryption in an ethernet passive optical network 有权
    以太网无源光网络数据加密方法

    公开(公告)号：US07349537B2

    公开(公告)日：2008-03-25

    申请号：US11078923

    申请日：2005-03-10

    申请人： Glen Kramer ,  Lawrence D. Davis ,  Edward W. Boyd ,  Ryan E. Hirth ,  Ngo Thahn Ho

    发明人： Glen Kramer ,  Lawrence D. Davis ,  Edward W. Boyd ,  Ryan E. Hirth ,  Ngo Thahn Ho

    IPC分类号： H04K1/00 ,  H04L9/00 ,  H04L9/28 ,  H04J14/00

    CPC分类号： H04L9/12 ,  H04L9/0637

    摘要： One embodiment of the present invention provides a system that decrypts downstream data in an Ethernet passive optical network (EPON). During operation, the system receives a data frame which is encrypted based on a remote input block and a session key, wherein the remote input block is constructed based on a remote cipher counter and a remote block counter. The system adjusts a local cipher counter based on a received checksum located in a preamble of the data frame, wherein the local cipher counter is substantially synchronized with the remote cipher counter. In addition, the system truncates the local cipher counter by discarding n least significant bits thereof. The system then constructs a local input block based on the truncated cipher counter and a local block counter for the received data frame. Next, the system decrypts the data frame based on the local input block and the session key.

    摘要翻译： 本发明的一个实施例提供一种解密以太网无源光网络（EPON）中的下游数据的系统。 在操作期间，系统接收基于远程输入块和会话密钥加密的数据帧，其中基于远程密码计数器和远程块计数器构建远程输入块。 该系统基于位于数据帧的前导码中的接收到的校验和来调整本地密码计数器，其中本地密码计数器基本上与远程密码计数器同步。 此外，系统通过丢弃其最低有效位来截断本地密码计数器。 然后，系统基于截断的密码计数器和接收到的数据帧的本地块计数器构建本地输入块。 接下来，系统基于本地输入块和会话密钥来解密数据帧。