公开(公告)号：US20050190359A1

公开(公告)日：2005-09-01

申请号：US11065098

申请日：2005-02-25

Applicant: James Bacque ,  Ping Wan ,  Derrick Remedios ,  Eddie Ng

Inventor： James Bacque ,  Ping Wan ,  Derrick Remedios ,  Eddie Ng

IPC: G01M11/00 ,  G01N21/00 ,  H04B10/08

CPC classification number: H04B10/077 ,  H04B10/07955

Abstract: A multi-stage method and apparatus for determining a faulty component location along an optical path through an optical fiber in an optical network are disclosed. The optical fiber carries a plurality of wavelengths, which may or may not be modulated by low frequency dither tones that are utilized for identification purposes and performance monitoring in the optical network. First, the method comprises measuring a total power of the optical fiber and a total wavelength power as a sum of powers of the individual wavelengths at a plurality of local detection points; comparing the measured powers at the local detection points; and determining whether or not a faulty detection point exists along the optical path. If a fault is identified, the method further provides a multi-stage fault detection procedure, which comprises measuring a total wavelength power loss between a local detection point and an adjacent detection point, between the local detection point and multiple non-adjacent detection points. A correlation of the measured total wavelength power losses between the various detection points is used for determining the faulty component location along the optical path. The apparatus, which incorporates the above multi-stage method for determining the faulty component location in the optical network, is also provided.

Abstract translation: 公开了一种用于通过光网络中的光纤确定沿着光路的故障部件位置的多级方法和装置。 光纤承载多个波长，其可以或可以不被用于光网络中的识别目的和性能监视的低频抖动音调制。 首先，该方法包括测量光纤的总功率和总波长功率，作为多个局部检测点处各个波长的功率之和; 比较局部检测点的测量功率; 以及确定沿光路是否存在故障检测点。 如果识别故障，则该方法进一步提供多级故障检测程序，其包括测量本地检测点与相邻检测点之间，本地检测点与多个非相邻检测点之间的总波长功率损耗。 使用各个检测点之间测量的总波长功率损耗的相关性来确定沿光路的故障分量位置。 还提供了包括用于确定光网络中的故障部件位置的上述多级方法的装置。

公开(公告)号：US07251214B2

公开(公告)日：2007-07-31

申请号：US10193129

申请日：2002-07-12

Applicant: Barry Ding Ken Mark ,  Thomas George Zboril

Inventor： Barry Ding Ken Mark ,  Thomas George Zboril

IPC: H04L1/00 ,  H04L12/66 ,  H04L12/56 ,  H04J3/24

CPC classification number: H04L12/1836

Abstract: A method and system for providing protection of data communications in packet-based networks is provided, using a combination of unicast to multicast conversion and providing formation of virtual output queues (VOQs) which are separate for each pair of the target port and protection ports on the target network device. As a result, the system requires less bandwidth resources and reduces or eliminates network performance problems associated with other existing solutions.

Abstract translation: 提供了一种用于在基于分组的网络中提供数据通信保护的方法和系统，其使用单播到组播转换的组合，并提供对每对目标端口和保护端口分开的虚拟输出队列（VOQ）的形成 目标网络设备。 因此，系统需要更少的带宽资源，并减少或消除与其他现有解决方案相关联的网络性能问题。

公开(公告)号：US07142783B2

公开(公告)日：2006-11-28

申请号：US10452511

申请日：2003-06-03

Applicant: Paul David Obeda ,  Derrick Remedios ,  Ping Wai Wan ,  Colin Geoffrey Kelly

Inventor： Paul David Obeda ,  Derrick Remedios ,  Ping Wai Wan ,  Colin Geoffrey Kelly

IPC: H04B10/08

CPC classification number: H04J14/0227 ,  H04B10/00 ,  H04B2210/071 ,  H04B2210/074 ,  H04B2210/075 ,  H04B2210/077 ,  H04B2210/078 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0276 ,  H04J14/0278 ,  H04J14/0298

Abstract: A method and system for identification of a channel in an optical network is provided. The channel is identified by the use of unique combinations of two or more low frequencies, or tones, modulated onto the channel and optionally, a network parameter associated with the channel.

Abstract translation: 提供了一种用于识别光网络中的信道的方法和系统。 信道通过使用调制到信道上的两个或多个低频或音调的独特组合来识别，并且可选地使用与该信道相关联的网络参数。

公开(公告)号：US07126959B2

公开(公告)日：2006-10-24

申请号：US10194277

申请日：2002-07-15

Applicant: Kizito Gysbertus Antonius Van Asten ,  Faisal Dada ,  Edward Aung Kyi Maung

Inventor： Kizito Gysbertus Antonius Van Asten ,  Faisal Dada ,  Edward Aung Kyi Maung

IPC: H04L12/54

CPC classification number: H04L12/5601 ,  H04L49/103 ,  H04L49/30 ,  H04L49/3027 ,  H04L49/3081 ,  H04L49/505 ,  H04L49/90 ,  H04L2012/5652 ,  H04L2012/5667 ,  H04L2012/5681

Abstract: A high-speed packet memory is provided, the memory having a write port and a read port and comprised of the following: a plurality of N memory modules for storing fixed size cells, which are segments of a variable size packet divided into X cells, the X cells being grouped into [X/N] groups of cells; a read-write control block comprising a means for receiving cells from the write port and storing each cell, which belongs to the same group, in a selected different one of the N memory modules at the same memory address (the group address); a multi-cell pointer (MCP) storage for storing an MCP for said group of cells (an associated MCP) at an MCP address, the MCP having N memory module identifiers to record the order in which cells of said group of cells are stored in the N memory modules; and the MCP address being the same as the group address. Corresponding methods for storing cells and/or storing and retrieving variable size packet in such memory are also provided.

Abstract translation: 提供了一种高速分组存储器，该存储器具有写入端口和读取端口，并且包括以下部件：用于存储固定大小的单元的多个N个存储器模块，它们是划分为X个单元的可变大小分组的段， X细胞分组为[X / N]组细胞; 读写控制块包括用于从写入端口接收单元并将属于同一组的每个单元存储在相同存储器地址（组地址）的N个存储器模块中选定的不同的一个中的单元的装置; 一个多小区指针（MCP）存储器，用于在MCP地址处存储用于所述一组小区（相关联的MCP）的MCP，该MCP具有N个存储器模块标识符，用于记录所述小区单元的存储单元的顺序 N个内存模块; MCP地址与组地址相同。 还提供了用于在这种存储器中存储单元和/或存储和检索可变大小分组的相应方法。

公开(公告)号：US20060129939A1

公开(公告)日：2006-06-15

申请号：US11348322

申请日：2006-02-07

Applicant: David Nelles ,  Daniel Adamski ,  Paul Obeda ,  Victoria Donnelly

Inventor： David Nelles ,  Daniel Adamski ,  Paul Obeda ,  Victoria Donnelly

IPC: G06F17/00

CPC classification number: H04B10/07 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04L41/12 ,  H04L41/22

Abstract: A method for the simultaneous graphical display of paths of optical wavelength channels in a telecommunications network together with one or more channel attributes is provided. The graphical display of the network also shows the direction of data flow transported by the channels. An audible or visual alarm for an error condition for a channel attribute on a link in the network can be produced if requires. The operator can also obtain detailed information on a channel by positioning the mouse over a channel.

公开(公告)号：US07046426B2

公开(公告)日：2006-05-16

申请号：US10443058

申请日：2003-05-22

Applicant: Eddie Kai Ho Ng ,  Colin Geoffrey Kelly

Inventor： Eddie Kai Ho Ng ,  Colin Geoffrey Kelly

IPC: H01S3/00 ,  H04B10/00

CPC classification number: H04B10/2933 ,  H04B10/2935

Abstract: A method for determining locations and gain settings of optical amplifiers in an optical network is provided. The method comprises evaluating allowable amplifier locations and successively eliminating selected locations until no further locations can be eliminated without the network violating predetermined specifications. This systematic method is applicable to a variety of network topologies and takes into account existing network limitations. In one embodiment, the method for determining the locations and gain settings of the amplifiers uses the amount of operating margin in the network to select locations to be eliminated. In another embodiment, the method is repeated a number of times with different selections of amplifier locations, and the method providing the arrangement with the least number of amplifiers is chosen.

Abstract translation: 提供一种用于确定光网络中的光放大器的位置和增益设置的方法。 该方法包括评估允许的放大器位置并连续地消除所选择的位置，直到没有网络违反预定规格的情况下才能消除其他位置。 该系统方法适用于各种网络拓扑，并考虑到现有的网络限制。 在一个实施例中，用于确定放大器的位置和增益设置的方法使用网络中的操作裕度来选择要消除的位置。 在另一个实施例中，通过不同的放大器位置的选择重复该方法多次，并且选择提供具有最少数量的放大器的布置的方法。

公开(公告)号：US07035209B2

公开(公告)日：2006-04-25

申请号：US09934851

申请日：2001-08-23

Applicant: Cuong Dang ,  David Randall Heatley

Inventor： Cuong Dang ,  David Randall Heatley

IPC: H04J1/16

CPC classification number: H04L41/12

Abstract: A communications network has data and dedicated control network communication links between nodes. The control network is automatically and reliably created by each node determining each of its neighbor nodes to which it has a direct data link, each node having at least two neighbor nodes, and establishing a control network link for communicating control network traffic directly with each of these neighbor nodes. Each control network link can, if a dedicated control network link is not available, use bandwidth of a data link between the respective nodes, a link selection protocol being based on shared risk link groups and available bandwidth.

公开(公告)号：US07012933B2

公开(公告)日：2006-03-14

申请号：US10025872

申请日：2001-12-26

Applicant: Barry Ding Ken Mark ,  Douglas Heath Patriarche

Inventor： Barry Ding Ken Mark ,  Douglas Heath Patriarche

IPC: H04J1/00

CPC classification number: H04L45/50 ,  H04L12/4633 ,  H04L29/06 ,  H04L45/10 ,  H04L69/16 ,  H04L69/168 ,  H04L69/22 ,  H04L69/32 ,  H04L69/324

Abstract: A method of transmitting packets from the source edge router through the label switch router to the destination edge router, comprising the steps of: assigning different protocol type indicators at the source edge router to user MPLS packets and to non-user MPLS packets of at least one additional protocol type; at the label switch router, forwarding MPLS packets received from the source edge router or another label switch router in such a manner as to preserve the protocol type indicator of the packet transport protocol of each received MPLS packet; at the destination edge router, recognizing the protocol type indicator of the transport protocol of the MPLS packets received from the label switch router, and segregating the user MPLS packets from non-user MPLS packets. Preferably, user and non-user MPLS packets are assigned the same MPLS label and sent via the same label switched path. Corresponding enhanced MPLS network is also provided.

Abstract translation: 一种从源边缘路由器通过标签交换路由器向目的地边缘路由器发送分组的方法，包括以下步骤：在源边缘路由器处分配不同的协议类型指示符到用户MPLS分组，并至少分配至非用户MPLS分组 一种附加协议类型; 在标签交换路由器上，转发从源边缘路由器或其他标签交换路由器接收的MPLS报文，保持每个收到的MPLS报文的报文传输协议的协议类型指示符; 在目的边缘路由器上识别从标签交换路由器接收到的MPLS报文的传输协议的协议类型指示符，并将用户MPLS报文与非用户MPLS报文隔离。 优选地，用户和非用户MPLS分组被分配相同的MPLS标签并通过相同的标签交换路径发送。 还提供了相应的增强型MPLS网络。

公开(公告)号：US20060034608A1

公开(公告)日：2006-02-16

申请号：US11184966

申请日：2005-07-20

Applicant: David Holmes ,  Paul Reepschlager

Inventor： David Holmes ,  Paul Reepschlager

IPC: G02F1/00

CPC classification number: H04B10/00 ,  H04L41/06

Abstract: An optical network including multiple nodes is subject to intermittent faults that may raise alarms in the system. The invention focuses on an optical network based on the Any rate architecture. A single fault such as a client failure at a node in such a network can give rise to a loss of client signal leading to multiple alarms detected at multiple points. To alleviate this problem this invention provides switching in a special Signature signal in place of the lost client signal. By detecting the Signature signal containing a specific code, the fault on the any rate-based architecture can be uniquely identified. In addition to fault identification, the Signature signal on the network makes it possible to maintain Clock and Data Recovery Locks at downstream nodes. The Signature signal serves also as a vehicle for carrying a special optical tag called Wavekey provided by the Wavelength Tracker technology developed by the Applicant. This optical tag includes a low frequency modulation of one or more dither tones onto an optical channel, which is uniquely identified by the tag. Maintaining the Wavekey is important for tracing the end-to-end path and power level of the signal on each wavelength. A method and a Field Programmable Gate Array-based system for the generation and identification of such a Signature signal that not only identifies the fault that has occurred on the optical network but also provides for the maintenance of the Wavekey, are described.

Abstract translation: 包括多个节点的光网络经受间歇性故障，可能会引起系统中的报警。 本发明专注于基于Any Rate架构的光网络。 诸如这种网络中的节点处的客户端故障的单个故障可能导致客户端信号的丢失，导致在多个点处检测到的多个警报。 为了减轻这个问题，本发明提供了一种特殊的Signature信号来代替丢失的客户端信号。 通过检测包含特定代码的签名信号，可以唯一地识别任何基于速率的架构上的故障。 除了故障识别之外，网络上的Signature信号还可以在下游节点保持Clock和Data Recovery Lock。 签名信号还用作携带由本申请人开发的波长跟踪技术提供的称为Wavekey的特殊光学标签的载体。 该光学标签包括一个或多个抖动音调到光信道上的低频调制，其由标签唯一地标识。 维护Wavekey对于跟踪每个波长上的信号的端到端路径和功率电平非常重要。 描述了一种用于生成和识别这样的签名信号的方法和基于现场可编程门阵列的系统，其不仅识别出在光网络上发生的故障，而且提供波形的维护。

公开(公告)号：US07000029B2

公开(公告)日：2006-02-14

申请号：US10023758

申请日：2001-12-21

Applicant: Constantin Viorel Marian ,  Dan Oprea

Inventor： Constantin Viorel Marian ,  Dan Oprea

IPC: G06F15/13

CPC classification number: H04L61/2092 ,  H04L29/1232

Abstract: A method and system for automatic allocation of port addresses in a network is provided. The node performs a self-discovery after initial power-up, and for each port on the node, using unique values associated with the port in the network hierarchy, applies a function that allows for an inverse function to the set of values to generate a default unique address for the port. A typical hierarchical structure in a network is the network area, node, and, within the node, the shelf, the card and the port. Next, the node sends a frame including the default port address and node identifier, from the port to a connected node. The node polls the port for a frame with network information associated with the connected port on the other node. If a frame is received from the other node, the node applies a logical condition to the default and received port addresses, and, if the condition is satisfied, applies another function to the received port address to generate a new unique address for the port, and maintains the new port address within the node. The method is described for IP networks but can be equally applied to ATM or Frame Relay networks, and for any nodes that support Sub-network Access Protocol (SNAP).