公开(公告)号：US07693178B2

公开(公告)日：2010-04-06

申请号：US11644562

申请日：2006-12-21

申请人： Jaroslaw Wojtowicz

发明人： Jaroslaw Wojtowicz

IPC分类号： H04L3/00 ,  H04L1/00

CPC分类号： H04J14/0282 ,  H04B10/40 ,  H04Q11/0067

摘要： The present invention provides a small form factor, pluggable ONU, which includes a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from an OLT. The ONU further includes an ONU chip coupled to the optical transceiver and configured to communicate with the OLT. Also included is a pluggable interface configured to electrically interface between the ONU chip and a piece of subscriber premise equipment (SPE). The ONU includes a power management module to provide power to the ONU chip and the optical transceiver, using power delivered from the SPE through the pluggable interface. The ONU is enclosed a small form factor enclosure, thereby allowing the pluggable ONU to be directly plugged into the SPE and providing an Ethernet Passive Optical Network (EPON) uplink to the SPE without requiring an separate power supply.

摘要翻译： 本发明提供了一种小型可插拔ONU，其包括双向光收发器，其被配置为向OLT发送光信号并从其接收光信号。 ONU还包括耦合到光收发器并被配置为与OLT通信的ONU芯片。 还包括被配置为在ONU芯片和一个用户驻地设备（SPE）之间电接口的可插拔接口。 ONU包括电源管理模块，用于通过可插拔接口从SPE提供的功率向ONU芯片和光收发器提供电力。 ONU封装了一个小尺寸的外壳，从而允许可插拔的ONU直接插入SPE，并提供以太网无源光网络（EPON）到SPE的上行链路，而不需要单独的电源。

公开(公告)号：US20110182588A1

公开(公告)日：2011-07-28

申请号：US12692338

申请日：2010-01-22

申请人： Jaroslaw Wojtowicz

发明人： Jaroslaw Wojtowicz

IPC分类号： H04B10/00

CPC分类号： H04B10/40 ,  H04L41/04 ,  H04Q11/0067

摘要： One embodiment provides a pluggable optical line terminal (OLT). The OLT includes a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs), an OLT chip coupled to the optical transceiver and configured to communicate with the ONUs through the optical transceiver, and a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and a piece of network equipment. The optical transceiver, the OLT chip, and the pluggable interface are contained in an enclosure complying with a form factor, thereby allowing the pluggable OLT to be directly plugged into the network equipment.

摘要翻译： 一个实施例提供了一种可插拔光线路终端（OLT）。 OLT包括双向光收发器，被配置为向多个光网络单元（ONU）发送光信号并从其接收光信号，OLT芯片耦合到光收发器并被配置为通过光收发器与ONU进行通信， 以及耦合到OLT芯片并被配置为在OLT芯片和一块网络设备之间电接口的可插拔接口。 光收发器，OLT芯片和可插拔接口包含在符合形状因素的外壳中，从而允许可插拔OLT直接插入网络设备。

公开(公告)号：US20100241936A1

公开(公告)日：2010-09-23

申请号：US12728059

申请日：2010-03-19

申请人： Ryan E. Hirth

发明人： Ryan E. Hirth

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H04L1/0061 ,  H03M13/091 ,  H03M13/6356 ,  H03M13/6516

摘要： One embodiment provides a system for calculating a checksum for a packet. During operation, the system receives a packet, pads the received packet with a number of bits having predetermined values, and calculates an initial checksum value for the padded packet. Subsequently, the system calculates a final checksum for the original packet by reversing the initial checksum value using the padded bits with predetermined values

摘要翻译： 一个实施例提供了一种用于计算分组的校验和的系统。 在操作期间，系统接收分组，以具有预定值的多个比特填充接收到的分组，并且计算填充分组的初始校验和值。 随后，系统通过使用预定值的填充比特来反转初始校验和值来计算原始分组的最终校验和

公开(公告)号：US07719977B2

公开(公告)日：2010-05-18

申请号：US12105536

申请日：2008-04-18

申请人： John Ferdinand Sisto ,  Edward Wayne Boyd

发明人： John Ferdinand Sisto ,  Edward Wayne Boyd

IPC分类号： G01R31/08

CPC分类号： H04L12/5695 ,  H04L47/22 ,  H04L47/2425 ,  H04L47/70 ,  H04L47/788 ,  H04L47/805 ,  H04L47/828

摘要： One embodiment of the present invention provides a system that facilitates dynamic allocation of upstream bandwidth in a passive optical network which includes a central node and at least one remote node. Each remote node is coupled to at least one logical entity, which corresponds to a device or a user, that transmits upstream data to the central node and receives downstream data from the central node. The central node is coupled to an external network outside of the passive optical network through a shared out-going uplink.

摘要翻译： 本发明的一个实施例提供了一种有助于在包括中央节点和至少一个远程节点的无源光网络中动态分配上行带宽的系统。 每个远程节点耦合到至少一个对应于设备或用户的逻辑实体，该逻辑实体将上行数据发送到中央节点并从中央节点接收下游数据。 中央节点通过共享的外向上行链路耦合到无源光网络外部的外部网络。

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。

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。

公开(公告)号：US07505459B2

公开(公告)日：2009-03-17

申请号：US10814929

申请日：2004-03-30

申请人： Edward W. Boyd

发明人： Edward W. Boyd

IPC分类号： H04L12/28

CPC分类号： H04L47/6215 ,  H04L12/4641 ,  H04L47/2408 ,  H04L47/50 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q11/0071

摘要： One embodiment of the present invention provides a system that performs packets switching in a passive optical network which includes a central node and at least one remote node. After receiving a packet, the system obtains a first set of results by performing a first lookup based on a first set of values derived from the packet. The system also obtains a second set of results by performing a second lookup based on a second set of values derived from the packet. Next, the system merges the first set of results and the second set of results, and produces a merged value. The system then obtains a subsequent result by performing a subsequent lookup with the merged value. If the packet is a downstream packet, the system derives a logical identifier corresponding to one or more remote nodes from the subsequent result. The system then incorporates the logical identifier into the packet and transmits the packet to one or more remote nodes.

摘要翻译： 本发明的一个实施例提供一种在包括中央节点和至少一个远程节点的无源光网络中执行分组交换的系统。 在接收到分组之后，系统通过基于从分组导出的第一组值执行第一查找来获得第一组结果。 系统还通过基于从分组导出的第二组值执行第二查找来获得第二组结果。 接下来，系统将第一组结果和第二组结果合并，并产生合并值。 然后，系统通过执行具有合并值的后续查找来获得后续结果。 如果分组是下行分组，则系统从随后的结果中导出与一个或多个远程节点对应的逻辑标识符。 然后，系统将逻辑标识符合并到分组中，并将分组发送到一个或多个远程节点。

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：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。

公开(公告)号：US07664019B2

公开(公告)日：2010-02-16

申请号：US11223487

申请日：2005-09-08

申请人： Edward W. Boyd ,  Thyagarajan Subramanian ,  Lawrence D. Davis

发明人： Edward W. Boyd ,  Thyagarajan Subramanian ,  Lawrence D. Davis

IPC分类号： H04L12/56 ,  H04B10/20

CPC分类号： H04L47/10 ,  H04L12/4641 ,  H04L41/5003 ,  H04L41/5022 ,  H04L47/15 ,  H04L47/2408 ,  H04L47/2425 ,  H04L47/2491

摘要： One embodiment of the present invention provides a system for forwarding packets in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system associates a logical link identifier (LLID) to a logical link between the central node and a remote node, wherein the logical link corresponds to a priority level based on a certain service level agreement (SLA). After receiving a packet to be forwarded to a remote node, the system then determines the value of one or more fields within the packet which is used to indicate a priority level for the packet. Subsequently, the system assigns an LLID to the packet based on the value of the one or more fields, thereby facilitating differentiated service qualities within the EPON.

摘要翻译： 本发明的一个实施例提供了一种用于在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）中转发分组的系统。 在操作期间，系统将逻辑链路标识符（LLID）与中心节点和远程节点之间的逻辑链路相关联，其中逻辑链路基于特定服务级别协议（SLA）对应于优先级。 在接收到要转发到远程节点的分组之后，系统然后确定用于指示分组的优先级的分组内的一个或多个字段的值。 随后，系统基于一个或多个字段的值向该分组分配LLID，从而促进EPON内的差异化服务质量。