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    Method and system for accommodating different clock frequencies in an ethernet passive optical network
    1.
    发明授权
    Method and system for accommodating different clock frequencies in an ethernet passive optical network 有权
    在以太网无源光网络中适应不同时钟频率的方法和系统

    公开(公告)号：US07929576B2

    公开(公告)日：2011-04-19

    申请号：US11478492

    申请日：2006-06-28

    申请人： Edward W. Boyd ,  Ryan E. Hirth ,  Hung Nguyen

    发明人： Edward W. Boyd ,  Ryan E. Hirth ,  Hung Nguyen

    IPC分类号： H04J3/07

    CPC分类号： H04J3/0638 ,  H04J3/0652 ,  H04J3/0682 ,  H04J3/07 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0079

    摘要： One embodiment of the present invention provides a system that accommodates different clock frequencies in an EPON. The system receives a signal from the OLT at the ONU and derives an OLT clock. The system also maintains a local clock. The system further receives from the OLT an assignment for an upstream transmission window, during which the ONU can transmit an upstream data burst to the OLT based on the local clock. The system adjusts the number of bits of the data burst without affecting the payload data carried in the data burst, thereby allowing the data burst to fit properly within the upstream transmission window and compensating for frequency differences between the local clock and the OLT clock. The system transmits the data burst based on the local clock in the upstream transmission window.

    摘要翻译： 本发明的一个实施例提供一种在EPON中适应不同时钟频率的系统。 系统从ONU接收来自OLT的信号，得到OLT时钟。 该系统还维护本地时钟。 该系统还从OLT接收用于上行传输窗口的分配，在该传输窗口期间，ONU可以基于本地时钟向OLT发送上行数据突发。 该系统调整数据脉冲串的位数，而不影响数据脉冲串中承载的有效载荷数据，从而允许数据脉冲串适配于上游传输窗口内，并补偿本地时钟与OLT时钟之间的频率差异。 系统根据上行传输窗口中的本地时钟传输数据脉冲串。

    Method and apparatus for accommodating differrent clock frequencies in an ethernet passive optical network
    2.
    发明授权
    Method and apparatus for accommodating differrent clock frequencies in an ethernet passive optical network 有权
    用于在以太网无源光网络中适应不同时钟频率的方法和装置

    公开(公告)号：US08588257B2

    公开(公告)日：2013-11-19

    申请号：US13073525

    申请日：2011-03-28

    申请人： Edward W. Boyd ,  Ryan E. Hirth ,  Hung Nguyen

    发明人： Edward W. Boyd ,  Ryan E. Hirth ,  Hung Nguyen

    IPC分类号： H04J3/06

    CPC分类号： H04J3/0638 ,  H04J3/0652 ,  H04J3/0682 ,  H04J3/07 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0079

    摘要： One embodiment of the present invention provides a system that accommodates different clock frequencies in an Ethernet passive optical network (EPON). The system receives a signal from an optical line terminal (OLT) at an optical network unit (ONU) and derives an OLT clock. The system also maintains a local clock. The system further receives from the OLT an assignment for an upstream transmission window, during which the ONU can transmit an upstream data burst to the OLT based on the local clock. The system adjusts the number of bits of the data burst without affecting the payload data carried in the data burst, thereby allowing the data burst to fit properly within the upstream transmission window and compensating for frequency differences between the local clock and the OLT clock. The system transmits the data burst based on the local clock in the upstream transmission window.

    摘要翻译： 本发明的一个实施例提供一种在以太网无源光网络（EPON）中适应不同时钟频率的系统。 该系统从光网络单元（ONU）的光线路终端（OLT）接收信号，得到OLT时钟。 该系统还维护本地时钟。 该系统还从OLT接收用于上行传输窗口的分配，在该传输窗口期间，ONU可以基于本地时钟向OLT发送上行数据突发。 该系统调整数据脉冲串的位数，而不影响数据脉冲串中承载的有效载荷数据，从而允许数据脉冲串适配于上游传输窗口内，并补偿本地时钟与OLT时钟之间的频率差异。 系统根据上行传输窗口中的本地时钟传输数据脉冲串。

    Epon with power-saving features
    3.
    发明授权
    Epon with power-saving features 有权
    Epon具有省电功能

    公开(公告)号：US08498534B2

    公开(公告)日：2013-07-30

    申请号：US12577608

    申请日：2009-10-12

    申请人： Ryan E. Hirth ,  Edward W. Boyd ,  Sanjay Goswami

    发明人： Ryan E. Hirth ,  Edward W. Boyd ,  Sanjay Goswami

    IPC分类号： H04B10/08 ,  H04B10/20 ,  H04J14/00

    CPC分类号： H04J14/0221 ,  H04B10/27 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0079

    摘要： One embodiment provides a system for power saving in an Ethernet Passive Optic Network (EPON). The system includes an optical line terminal (OLT), an optical network unit (ONU), a traffic-detection module configured to detect status of traffic to and from the ONU, and a power-management module configured to place the ONU in sleep mode based on the detected traffic status. The ONU includes an optical transceiver that includes an optical transmitter configured to transmit optical signals to the OLT and an optical receiver configured to receive optical signals from the OLT.

    摘要翻译： 一个实施例提供了一种用于以太网无源光网络（EPON）中的功率节省的系统。 该系统包括光线路终端（OLT），光网络单元（ONU），被配置为检测来自ONU的业务的状态的流量检测模块以及被配置为将ONU置于睡眠模式的电源管理模块 基于检测到的流量状态。 ONU包括光收发器，其包括被配置为向OLT发送光信号的光发射机和被配置为从OLT接收光信号的光接收机。

    Method and apparatus for link sharing among multiple epons
    6.
    发明授权
    Method and apparatus for link sharing among multiple epons 有权
    多个epon之间链路共享的方法和装置

    公开(公告)号：US08600234B2

    公开(公告)日：2013-12-03

    申请号：US12749285

    申请日：2010-03-29

    申请人： Ryan E. Hirth ,  Edward W. Boyd

    发明人： Ryan E. Hirth ,  Edward W. Boyd

    IPC分类号： H04J14/00

    CPC分类号： H04Q11/0067 ,  H04J14/0239 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/026 ,  H04J14/0282 ,  H04Q2011/0064

    摘要： One embodiment of the present invention provides an optical line terminal (OLT) in an Ethernet passive optical network (EPON). The OLT includes a number of bi-direction optical transceivers. At least one bi-direction optical transceiver is coupled to an optical network unit (ONU) group that includes a number of ONUs. The OLT further includes a first downstream media access control (MAC) interface configured to provide a first downstream control signal and a splitter configured to split the first downstream control signal to a number of sub-signals. At least one sub-signal is configured to control downstream transmission of a corresponding bi-direction optical transceiver to a corresponding ONU-group.

    摘要翻译： 本发明的一个实施例提供了一种以太网无源光网络（EPON）中的光线路终端（OLT）。 OLT包括多个双向光收发器。 至少一个双向光收发器耦合到包括多个ONU的光网络单元（ONU）组。 OLT还包括被配置为提供第一下游控制信号的第一下游媒体访问控制（MAC）接口和被配置为将第一下游控制信号分割成多个子信号的分离器。 至少一个子信号被配置为控制对应的双向光收发器到对应的ONU组的下行传输。

    EPON WITH POWER-SAVING FEATURES
    7.
    发明申请
    EPON WITH POWER-SAVING FEATURES 有权
    EPON具有省电功能

    公开(公告)号：US20100111523A1

    公开(公告)日：2010-05-06

    申请号：US12577608

    申请日：2009-10-12

    申请人： Ryan E. Hirth ,  Edward W. Boyd ,  Sanjay Goswami

    发明人： Ryan E. Hirth ,  Edward W. Boyd ,  Sanjay Goswami

    IPC分类号： H04B10/08 ,  G06F1/32 ,  H04J14/00

    CPC分类号： H04J14/0221 ,  H04B10/27 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0079

    摘要： One embodiment provides a system for power saving in an Ethernet Passive Optic Network (EPON). The system includes an optical line terminal (OLT), an optical network unit (ONU), a traffic-detection module configured to detect status of traffic to and from the ONU, and a power-management module configured to place the ONU in sleep mode based on the detected traffic status. The ONU includes an optical transceiver that includes an optical transmitter configured to transmit optical signals to the OLT and an optical receiver configured to receive optical signals from the OLT.

    摘要翻译： 一个实施例提供了一种用于以太网无源光网络（EPON）中的功率节省的系统。 该系统包括光线路终端（OLT），光网络单元（ONU），被配置为检测来自ONU的业务的状态的流量检测模块以及被配置为将ONU置于睡眠模式的电源管理模块 基于检测到的流量状态。 ONU包括光收发器，其包括被配置为向OLT发送光信号的光发射机和被配置为从OLT接收光信号的光接收机。

    Method and apparatus for facilitating asymmetric line rates in an Ethernet passive optical network
    8.
    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。

    METHOD AND APPARATUS FOR LINK SHARING AMONG MULTIPLE EPONS
    9.
    发明申请
    METHOD AND APPARATUS FOR LINK SHARING AMONG MULTIPLE EPONS 有权
    在多个EPON中链接共享的方法和装置

    公开(公告)号：US20100254706A1

    公开(公告)日：2010-10-07

    申请号：US12749285

    申请日：2010-03-29

    申请人： Ryan E. Hirth ,  Edward W. Boyd

    发明人： Ryan E. Hirth ,  Edward W. Boyd

    IPC分类号： H04J14/00

    CPC分类号： H04Q11/0067 ,  H04J14/0239 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/026 ,  H04J14/0282 ,  H04Q2011/0064

    摘要： One embodiment of the present invention provides an optical line terminal (OLT) in an Ethernet passive optical network (EPON). The OLT includes a number of bi-direction optical transceivers. At least one bi-direction optical transceiver is coupled to an optical network unit (ONU) group that includes a number of ONUs. The OLT further includes a first downstream media access control (MAC) interface configured to provide a first downstream control signal and a splitter configured to split the first downstream control signal to a number of sub-signals. At least one sub-signal is configured to control downstream transmission of a corresponding bi-direction optical transceiver to a corresponding ONU-group.

    摘要翻译： 本发明的一个实施例提供了一种以太网无源光网络（EPON）中的光线路终端（OLT）。 OLT包括多个双向光收发器。 至少一个双向光收发器耦合到包括多个ONU的光网络单元（ONU）组。 OLT还包括被配置为提供第一下游控制信号的第一下游媒体访问控制（MAC）接口和被配置为将第一下游控制信号分割成多个子信号的分离器。 至少一个子信号被配置为控制对应的双向光收发器到对应的ONU组的下行传输。

    Method and apparatus for accommodating TDM traffic in an ethernet passive optical network
    10.
    发明授权
    Method and apparatus for accommodating TDM traffic in an ethernet passive optical network 有权
    用于在以太网无源光网络中适应TDM业务的方法和装置

    公开(公告)号：US07590139B2

    公开(公告)日：2009-09-15

    申请号：US11385431

    申请日：2006-03-20

    申请人： Edward W. Boyd ,  Ryan E. Hirth ,  Duncan C. Gray ,  Sourigno Outsama

    发明人： Edward W. Boyd ,  Ryan E. Hirth ,  Duncan C. Gray ,  Sourigno Outsama

    IPC分类号： H04B7/212

    CPC分类号： H04Q11/0067 ,  H04Q2011/0064

    摘要： One embodiment of the present invention provides a system for accommodating time-division multiplexing (TDM) traffic in an Ethernet passive optical network (EPON). During operation, the system receives data from an upstream TDM channel at a remote node and stores received data in a segmentation buffer. The system encapsulates the data stored in the segmentation buffer into a packet. The system receives a message from the central node granting a TDM transmission window starting at a designated time. The system further communicates the packet to an upstream transmission mechanism within the remote node before the designated time, and transmits to the central node an upstream frame containing the packet at the designated time.

    摘要翻译： 本发明的一个实施例提供一种用于在以太网无源光网络（EPON）中适应时分复用（TDM）业务的系统。 在操作期间，系统从远程节点的上游TDM信道接收数据，并将接收的数据存储在分段缓冲器中。 系统将存储在分段缓冲器中的数据封装成一个数据包。 系统从指定的时间开始从中央节点接收授予TDM传输窗口的消息。 该系统进一步在指定时间之前将分组传送到远程节点内的上行传输机制，并在指定时间向中央节点发送包含分组的上行帧。