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：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：US06546014B1

公开(公告)日：2003-04-08

申请号：US09759539

申请日：2001-01-12

申请人： Glen Kramer ,  Gerry Pesavento

发明人： Glen Kramer ,  Gerry Pesavento

IPC分类号： H04L1256

CPC分类号： H04B10/272 ,  H04J3/1694 ,  H04L47/788 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086 ,  H04Q2011/0094

摘要： An optical access network and method for transmitting optical data in the network utilizes an interleaved polling scheme to efficiently use the available bandwidth of the network. The use of the interleaved polling scheme allows a central terminal of the network to dynamically allocate upstream bandwidth from remote terminals of the network to the central terminal in response to the amount of data that is waiting at the remote terminals to be transmitted to the OLT. In one embodiment, the optical access network is based on Passive Optical Network (PON) technology. In another embodiment, the optical access network utilizes Ethernet protocol to encapsulate data in Ethernet frames for transmission. Thus, in these embodiments, the optical access network includes all of the advantages associated with the PON technology and/or the Ethernet protocol. In addition, since the allocation of upstream bandwidth is on an as needed basis, loss of bandwidth due to unfilled time slots is substantially eliminated.

摘要翻译： 用于在网络中发送光数据的光接入网络和方法利用交错轮询方案来有效地使用网络的可用带宽。 交织轮询方案的使用允许网络的中央终端响应于在远程终端等待发送到OLT的数据量，动态地将上行带宽从网络的远端终端分配给中心终端。 在一个实施例中，光接入网基于无源光网络（PON）技术。 在另一个实施例中，光接入网使用以太网协议来封装以太网帧中的数据进行传输。 因此，在这些实施例中，光接入网络包括与PON技术和/或以太网协议相关联的所有优点。 此外，由于上行带宽的分配是根据需要，基本上消除了由于未填充时隙引起的带宽损失。

公开(公告)号：US20130177313A1

公开(公告)日：2013-07-11

申请号：US13417986

申请日：2012-03-12

申请人： Ryan Edgar HIRTH ,  Glen Kramer ,  Mitchell Gordon McGee

发明人： Ryan Edgar HIRTH ,  Glen Kramer ,  Mitchell Gordon McGee

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04Q2011/0064

摘要： The present disclosure is directed to a method and apparatus for maintaining sub-queues at an ONU and for maintaining a count of an amount of data stored in each sub-queue or a count of an amount of data associated with elements stored in each sub-queue. The sub-queues represent partitions in a first in, first out (FIFO) queue used by the ONU to buffer packets, or elements that are associated with packets, to be sent upstream. The sub-queues are coupled in series such that the output of a first sub-queue feeds the input of a second sub-queue, the output of the second sub-queue feeds the input of a third sub-queue, etc. Each sub-queue has a defined threshold that sets a maximum amount of packet data it can buffer or the elements in which it buffers can be associated with.

摘要翻译： 本公开涉及一种用于在ONU处维护子队列并且用于维持存储在每个子队列中的数据量的计数或与存储在每个子队列中的元素相关联的数据量的计数的方法和装置， 队列。 子队列表示ONU用于缓冲分组或与分组相关联的要发送到上游的元素的先入先出（FIFO）队列中的分区。 子队列串联耦合，使得第一子队列的输出馈送第二子队列的输入，第二子队列的输出馈送第三子队列的输入等。每个子队列 -queue具有一个定义的阈值，用于设置可缓冲的数据包数据的最大数量或缓冲区可以与之相关联的元素。

公开(公告)号：US07382739B2

公开(公告)日：2008-06-03

申请号：US10758895

申请日：2004-01-16

申请人： Glen Kramer

发明人： Glen Kramer

IPC分类号： H04L12/28

CPC分类号： H04L12/403

摘要： One embodiment of the present invention provides a system that facilitates discovery of remote nodes in EPONs. The system includes a central node and at least one remote node. During operation, the system first receives a solicitation message from the central node, wherein the solicitation message includes a time stamp indicating the solicitation message's transmission time and assigns a starting time and size for a discovery slot in which the remote node is allowed to transmit a response message to the central node for registration. The system then sets a local time at the remote node according to the received time stamp. After a random delay starting from the beginning of the assigned discovery slot, the system transmits the response message to the central node during the discovery slot with a response transmission probability that is less than or equal to one.

摘要翻译： 本发明的一个实施例提供一种便于在EPON中发现远程节点的系统。 该系统包括中央节点和至少一个远程节点。 在操作期间，系统首先从中央节点接收请求消息，其中，请求消息包括指示请求消息的发送时间的时间戳，并为远程节点允许发送的发现时隙分配开始时间和大小 响应消息到中心节点进行注册。 然后，系统根据接收的时间戳在远程节点设置本地时间。 在从所分配的发现时隙的开始开始的随机延迟之后，系统在响应传输概率小于或等于1的发现时隙期间向中心节点发送响应消息。

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：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：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。

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：US08964538B2

公开(公告)日：2015-02-24

申请号：US13173206

申请日：2011-06-30

申请人： Glen Kramer ,  Ryan Edgar Hirth ,  Robin Grindley ,  Edward Wayne Boyd

发明人： Glen Kramer ,  Ryan Edgar Hirth ,  Robin Grindley ,  Edward Wayne Boyd

IPC分类号： H04L12/26 ,  H04Q11/00 ,  H04L12/813

CPC分类号： H04Q11/0067 ,  H04L47/20 ,  H04Q2011/0064 ,  H04Q2011/0084 ,  H04Q2011/0086 ,  H04Q2213/1301

摘要： Embodiments of an apparatus including a user network interface configured to receive from a network a packet to be transmitted upstream over a PON are provided herein. The packet is marked with a first category type or a second category type. The apparatus further includes an upstream first in, first out (FIFO) queue configured to store the packet if the packet is marked with the first category type or the second category type.

摘要翻译： 本文提供了一种包括用户网络接口的设备的实施例，其被配置为从网络接收将在PON上上行传送的分组。 数据包被标记为第一类别类型或第二类别类型。 该装置还包括上游第一进出（FIFO）队列，被配置为如果分组被标记有第一类别类型或第二类别类型，则存储分组。