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。

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。

公开(公告)号：US09615153B2

公开(公告)日：2017-04-04

申请号：US13495057

申请日：2012-06-13

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

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

IPC分类号： H04B10/00 ,  H04Q11/00

CPC分类号： H04Q11/0067 ,  H04Q11/0071

摘要： A system and method for applying an extended multipoint control protocols to wireless access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON wireless domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention.

公开(公告)号：US20130315593A1

公开(公告)日：2013-11-28

申请号：US13495057

申请日：2012-06-13

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

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

IPC分类号： H04B10/10

CPC分类号： H04Q11/0067 ,  H04Q11/0071

摘要： A system and method for applying an extended multipoint control protocols to wireless access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON wireless domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention.

摘要翻译： 一种用于将扩展多点控制协议应用于无线接入系统的系统和方法。 可以在可以与PON域中的上行光线路终端和非PON无线域中的下游设备接口的适配器节点中提供中等到中等的适配器。 中等到中等适配器通过传递具有受控延迟和无竞争的所有流量，实现跨多个服务质量（QoS）域的端到端服务。

公开(公告)号：US20130315238A1

公开(公告)日：2013-11-28

申请号：US13495042

申请日：2012-06-13

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

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

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04Q11/0067 ,  H04Q11/0071

摘要： A method and apparatus for extending multipoint control protocols to mixed media access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention.

摘要翻译： 一种用于将多点控制协议扩展到混合媒体接入系统的方法和装置。 可以在可以与PON域中的上行光线路终端和非PON域中的下游设备接口的适配器节点中提供中等到中等适配器。 中等到中等适配器通过传递具有受控延迟和无竞争的所有流量，实现跨多个服务质量（QoS）域的端到端服务。

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.

公开(公告)号：US20060257148A1

公开(公告)日：2006-11-16

申请号：US11431342

申请日：2006-05-09

申请人： Ryan Hirth ,  Lowell Lamb ,  Glen Kramer ,  Benjamin Brown

发明人： Ryan Hirth ,  Lowell Lamb ,  Glen Kramer ,  Benjamin Brown

IPC分类号： H04J14/00

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。

公开(公告)号：US20050271053A1

公开(公告)日：2005-12-08

申请号：US10866399

申请日：2004-06-12

申请人： Hung Nuyen ,  Glen Kramer ,  Ryan Hirth

发明人： Hung Nuyen ,  Glen Kramer ,  Ryan Hirth

IPC分类号： H04L1/00 ,  H04L12/56

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. During operation, the system receives a conventional Ethernet frame. The system then 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 is used to separate the conventional Ethernet frame from the FEC parity bits if the last symbol of the conventional Ethernet frame is in an odd-numbered position. The odd-delimiter is used to separate the conventional Ethernet frame from the FEC parity bits if the last symbol of the conventional Ethernet frame is in an even-numbered position. 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 within the even- or odd-delimiter. The system also appends the number of FEC parity bits to the even- or odd-delimiter and appends a second delimiter to the FEC parity bits.

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。 在操作期间，系统接收传统的以太网帧。 然后，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。 如果常规以太网帧的最后一个符号处于奇数位置，则偶数分隔符用于将常规以太网帧与FEC奇偶校验位分离。 如果常规以太网帧的最后一个符号处于偶数位置，则奇数分隔符用于将常规以太网帧与FEC奇偶校验位分离。 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 如果位错误发生在偶数或奇数分隔符中。 该系统还将FEC奇偶校验位的数量附加到偶数或奇数分隔符，并将第二定界符附加到FEC奇偶校验位。

公开(公告)号：US20050058452A1

公开(公告)日：2005-03-17

申请号：US10941356

申请日：2004-09-14

申请人： Glen Kramer ,  Edward Boyd

发明人： Glen Kramer ,  Edward Boyd

IPC分类号： H04B10/155 ,  H04B10/207 ,  H04J3/06 ,  H04J3/16 ,  H04Q11/00 ,  H04J14/00

CPC分类号： H04Q11/0067 ,  H04B10/564 ,  H04J3/0682 ,  H04J3/1694 ,  H04Q11/0066

摘要： One embodiment of the present invention provides a system that facilitates transmission control in an Ethernet passive optical network, which includes a central node and at least one remote node, and wherein a remote node implements a data-link layer and a physical layer. During operation, the system starts by receiving, at the physical layer of a remote node, a word which is communicated from the data-link layer of the remote node, wherein the word may be a data word or an idle word. The system then delays the word for a pre-determined amount of time before allowing the word to be transmitted by a transmitter, thereby providing time for turning the transmitter on or off. The system also turns the transmitter on or off based on the content of the received words.

摘要翻译： 本发明的一个实施例提供一种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中的传输控制的系统，并且其中远程节点实现数据链路层和物理层。 在操作期间，系统通过在远程节点的物理层处接收从远程节点的数据链路层传送的单词开始，其中该单词可以是数据字或空闲字。 然后，系统在允许字由发射机发送之前延迟该字预定的时间量，从而为打开或关闭发射机提供时间。 系统还会根据接收到的字的内容打开或关闭发射机。

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。