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    Method and apparatus for forwarding packets in an ethernet passive optical network
    1.
    发明申请
    Method and apparatus for forwarding packets in an ethernet passive optical network 有权

    公开(公告)号：US20050058118A1

    公开(公告)日：2005-03-17

    申请号：US10925175

    申请日：2004-08-23

    申请人： Lawrence Davis ,  Edward Boyd ,  Glen Kramer

    发明人： Lawrence Davis ,  Edward Boyd ,  Glen Kramer

    IPC分类号： H04Q11/00 ,  H04L12/28

    CPC分类号： H04L12/2856 ,  H04L12/2861 ,  H04L12/4641 ,  H04L12/4645 ,  H04L12/467 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q11/0071

    摘要： One embodiment of the present invention provides a system that facilitates forwarding of packets in an Ethernet passive optical network (EPON), which includes a central node and at least one remote node. During operation, the system assigns a logical link identifier (LLID) to a remote node, wherein an LLID corresponds to a logical link between the central node and a remote node. The system also associates an LLID with a port of a switch within the central node, wherein the switch has a number of ports; wherein a port may be a physical port or a virtual port; and wherein the number of ports on the switch are divided into network-side ports and user-side ports. Upon receiving a downstream packet from a network-side port, the system searches a mapping table to determine whether one or more field values of the downstream packet correspond to any LLIDs or ports. If the one or more field values correspond to an LLID, the system assigns the LLID to the downstream packet and transmits the downstream packet to a remote node.

    Method and apparatus for facilitating asymmetric line rates in an ethernet passive optical network
    2.
    发明申请
    Method and apparatus for facilitating asymmetric line rates in an ethernet passive optical network 有权
    用于在以太网无源光网络中促进非对称线路速率的方法和装置

    公开(公告)号：US20070014575A1

    公开(公告)日：2007-01-18

    申请号：US11228879

    申请日：2005-09-16

    申请人： Glen Kramer ,  Edward Boyd ,  Ryan Hirth ,  Lawrence Davis ,  Lowell Lamb

    发明人： Glen Kramer ,  Edward Boyd ,  Ryan Hirth ,  Lawrence Davis ,  Lowell Lamb

    IPC分类号： H04J14/00

    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 for data encryption in an ethernet passive optical network
    3.
    发明申请
    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：US20050201554A1

    公开(公告)日：2005-09-15

    申请号：US11078923

    申请日：2005-03-10

    申请人： Glen Kramer ,  Lawrence Davis ,  Edward Boyd ,  Ryan Hirth ,  Ngo Ho

    发明人： Glen Kramer ,  Lawrence Davis ,  Edward Boyd ,  Ryan Hirth ,  Ngo Ho

    IPC分类号： H04L9/00 ,  H04L9/12

    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。

    Method and apparatus for registering multiple remote nodes in an ethernet passive optical network
    4.
    发明申请
    Method and apparatus for registering multiple remote nodes in an ethernet passive optical network 有权
    用于在以太网无源光网络中注册多个远程节点的方法和装置

    公开(公告)号：US20050047782A1

    公开(公告)日：2005-03-03

    申请号：US10850738

    申请日：2004-05-21

    申请人： Lawrence Davis ,  Glen Kramer

    发明人： Lawrence Davis ,  Glen Kramer

    IPC分类号： H04B10/20 ,  H04L12/28 ,  H04L12/403 ,  H04Q11/00

    CPC分类号： H04L12/2861 ,  H04L12/2856 ,  H04L12/2885 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q2011/0064

    摘要： One embodiment of the present invention provides a system that facilitates registration of remote nodes in an Ethernet passive optical network (EPON). The system includes a central node and at least one remote node, wherein a number of virtual remote nodes are coupled to a common physical remote node and transmit upstream data through a common transmitter within the common physical remote node. During an initial discovery cycle, the system receives a solicitation message from the central node at a remote node, wherein the solicitation message assigns a discovery slot in which an unregistered remote node may transmit a response message to the central node for registration. The system then transmits a response message from an unregistered remote node to register within the assigned discovery slot. If multiple virtual remote nodes coupled to the common physical remote node seek registration concurrently, the system controls the transmission of response messages from these virtual remote nodes to the central node so as to avoid collisions between response messages from different remote nodes.

    摘要翻译： 本发明的一个实施例提供一种便于在以太网无源光网络（EPON）中注册远程节点的系统。 该系统包括中央节点和至少一个远程节点，其中多个虚拟远程节点耦合到公共物理远程节点，并通过公共物理远程节点内的公共发射机发送上行数据。 在初始发现周期期间，系统从远程节点处的中央节点接收请求消息，其中，请求消息分配发现时隙，未注册的远程节点可以在其中向中央节点发送响应消息以进行注册。 然后，该系统从未注册的远程节点发送响应消息以在所分配的发现时隙内进行注册。 如果耦合到公共物理远程节点的多个虚拟远程节点同时寻求注册，则系统控制从这些虚拟远程节点到中央节点的响应消息的传输，以避免来自不同远程节点的响应消息之间的冲突。

    Supporting multi-dwelling units in passive optical networks
    5.
    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 system for mitigating Raman crosstalk in an Ethernet passive optical network
    8.
    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 REDUCING DATA BURST OVERHEAD IN AN ETHERNET PASSIVE OPTICAL NETWORK
    9.
    发明申请
    METHOD AND APPARATUS FOR REDUCING DATA BURST OVERHEAD IN AN ETHERNET PASSIVE OPTICAL NETWORK 审中-公开
    在以太网被动光网络中减少数据传输的方法和装置

    公开(公告)号：US20090110403A1

    公开(公告)日：2009-04-30

    申请号：US12328373

    申请日：2008-12-04

    申请人： Glen Kramer

    发明人： Glen Kramer

    IPC分类号： H04J14/08

    CPC分类号： H04Q11/0067 ,  H04J3/0682 ,  H04Q2011/0064

    摘要： One embodiment of the present invention provides a system that reduces data burst overhead in an Ethernet passive optical network which includes a central node and at least one remote node, wherein downstream data from the central node is broadcast to the remote nodes, and wherein upstream data from a remote node is transmitted to the central node in a unicast manner. During operation, the central node transmits grant messages to a number of remote nodes, wherein a grant message for a specified remote node assigns a start time and a duration of a transmission timeslot in which the specified remote node may transmit an upstream data burst. In response to the grant messages, the central node then receives a number of upstream data bursts, wherein the time gap between two consecutive upstream data bursts is less than the summation of a default laser turn-on time, a default laser turn-off time, an AGC period, and a CDR period.

    摘要翻译： 本发明的一个实施例提供一种减少包括中央节点和至少一个远程节点的以太网无源光网络中的数据突发开销的系统，其中来自中央节点的下行数据被广播到远程节点，并且其中上行数据 从远程节点以单播方式发送到中央节点。 在操作期间，中央节点向多个远程节点发送授权消息，其中指定的远程节点的授权消息分配指定的远程节点可以发送上行数据突发的传输时隙的开始时间和持续时间。 响应于授权消息，中央节点然后接收多个上行数据脉冲串，其中两个连续上行数据脉冲串之间的时间间隔小于默认激光器接通时间，默认激光关断时间的总和 ，AGC周期和CDR周期。

    Method and apparatus for reducing data burst overhead in an ethernet passive optical network
    10.
    发明授权
    Method and apparatus for reducing data burst overhead in an ethernet passive optical network 失效
    一种用于减少以太网无源光网络中数据突发开销的方法和装置

    公开(公告)号：US07477845B2

    公开(公告)日：2009-01-13

    申请号：US10820663

    申请日：2004-04-07

    申请人： Glen Kramer

    发明人： Glen Kramer

    IPC分类号： H04J14/00

    CPC分类号： H04Q11/0067 ,  H04J3/0682 ,  H04Q2011/0064

    摘要： A system is provided to reduce data burst overhead in an Ethernet passive optical network. During operation, the OLT transmits grant messages to a number of ONUs, wherein a grant message assigns a start time and a duration of a transmission timeslot in which an GNU may transmit an upstream data burst. In response to the grant messages, the OLT receives a number of upstream data bursts, wherein the time gap between two consecutive upstream data bursts is less than the summation of a default laser turn-on time, a default laser turn-off time, an AGC period, and a CDR period.

    摘要翻译： 提供一种系统来减少以太网无源光网络中的数据突发开销。 在操作期间，OLT向多个ONU发送授权消息，其中授权消息分配ONU可以在其中发送上行数据突发的传输时隙的开始时间和持续时间。 响应于授权消息，OLT接收多个上行数据突发，其中两个连续的上行数据脉冲串之间的时间间隔小于默认激光打开时间，默认激光关断时间， AGC周期和CDR周期。