公开(公告)号：US07321727B2

公开(公告)日：2008-01-22

申请号：US11178330

申请日：2005-07-12

Applicant: Eddie Kai Ho Ng ,  Jason Christopher De Rocher ,  Derrick Remedios ,  James Benson Bacque ,  Ping Wai Wan

Inventor： Eddie Kai Ho Ng ,  Jason Christopher De Rocher ,  Derrick Remedios ,  James Benson Bacque ,  Ping Wai Wan

IPC: H04B10/08 ,  H04B17/00

CPC classification number: H04B10/075 ,  H04B10/0775 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283

Abstract: This invention provides a method for commissioning an optical network using internal Automatic Spontaneous Emission (ASE) light inherently present in the optical network as a light source (the ASE light source) for measuring losses inside and between nodes in the network. A modular segmented approach is adopted and the network is commissioned segment by segment. The method uses techniques for the correction of the Optical Signal to Noise Ratio induced error as well as the Spectral Filtering Error during the loss computation required for adjusting the gains of the amplifiers at each network node to an appropriate value. Since the method does not require an external laser source that needs to be moved manually from node to node, it greatly reduces the commissioning time. Since it uses only the existing components of the network nodes it also leads to a significant saving in cost.

Abstract translation: 本发明提供一种使用光网络中固有存在的内部自发自发发射（ASE）光作为用于测量网络内部和节点之间的损耗的光源（ASE光源）来调试光网络的方法。 采用模块化分段方式，逐段调试网络。 该方法使用用于校正光信噪比诱导误差的技术以及在将每个网络节点处的放大器的增益调整到适当值所需的损耗计算期间的光谱滤波误差。 由于该方法不需要需要从节点手动移动的外部激光源，因此大大减少了调试时间。 由于它仅使用网络节点的现有组件，因此也可大大节省成本。

公开(公告)号：US07317731B2

公开(公告)日：2008-01-08

申请号：US10435458

申请日：2003-05-12

Applicant: Nabil Seddigh ,  Biswajit Nandy ,  Donald William Bennett

Inventor： Nabil Seddigh ,  Biswajit Nandy ,  Donald William Bennett

IPC: H04L12/56

CPC classification number: H04L45/50 ,  H04L45/10 ,  H04L47/70 ,  H04L47/724 ,  H04L47/825

Abstract: A system of hitless restart in a network, where at least one node in the network provides routing control distributed among ingress ports (ingress cards) and egress ports (egress cards), is disclosed. With distributed routing control, each ingress card has its own routing-control software and each egress card has its own routing-control software. When the routing-software at an ingress port or an egress port of a node is restarted, current connections traversing a restarting ingress card or a restarting egress card continue to function normally during a restart period without data loss. The disclosed system is tailored to a multi-protocol label switching (MPLS) network employing distributed-resource-reservation-protocol traffic engineering (RSVP-TE). The system relies on messaging between ingress card control planes, ingress card data planes, egress card control planes, and egress card data planes of a restarting node.

Abstract translation: 公开了一种网络中的无中断重启系统，其中网络中的至少一个节点提供分布在入口端口（入口卡）和出口端口（出卡）之间的路由控制。 通过分布式路由控制，每个入口卡都有自己的路由控制软件，每个出卡都有自己的路由控制软件。 当重新启动节点入口端口或出口端口的路由软件时，通过重启入口卡或重新启动出口卡的当前连接在重新启动期间继续正常工作，无数据丢失。 所公开的系统适用于采用分布式资源预留协议流量工程（RSVP-TE）的多协议标签交换（MPLS）网络。 该系统依赖于进入卡控制平面，入口卡数据平面，出卡控制平面和重启节点的出卡数据平面之间的消息传递。

公开(公告)号：US07227866B2

公开(公告)日：2007-06-05

申请号：US10273857

申请日：2002-10-21

Applicant: Jeffery David Romanko

Inventor： Jeffery David Romanko

IPC: H04L12/56 ,  H04L12/43

CPC classification number: H04L47/50

Abstract: The invention provides a method and system for fast scheduling using a work-conserving Round Robin strategy. The method and system select one of a plurality of queues of data packets for switching it to an output port in a current timeslot, for achieving work-conserving Round Robin scheduling. The method is based on a consideration range for each queue that is a set of queues having priority over the given queue. The method comprises the steps of generating a mask for a given queue for masking all queues outside a consideration range of the given queue and applying the mask and a queue ready flag for the given queue for determining if the given queue is to be selected in the current time slot.

Abstract translation: 本发明提供了一种使用工作节约循环策略进行快速调度的方法和系统。 该方法和系统选择数据分组的多个队列中的一个，将其切换到当前时隙中的输出端口，以实现工作节省循环调度。 该方法基于每个队列的考虑范围，该队列是具有优先于给定队列的队列集合。 该方法包括以下步骤：为给定队列生成用于掩蔽所述给定队列的考虑范围之外的所有队列的掩码，并且为所述给定队列应用所述掩码和队列就绪标志，以确定是否在所述队列中选择给定队列 当前时隙。

公开(公告)号：US07224909B2

公开(公告)日：2007-05-29

申请号：US10635561

申请日：2003-08-07

Applicant: Derrick Remedios ,  Benjamin Wai Chan ,  Patrick Chilufya Chimfwembe ,  Ping Wai Wan

Inventor： Derrick Remedios ,  Benjamin Wai Chan ,  Patrick Chilufya Chimfwembe ,  Ping Wai Wan

IPC: H04B10/04

CPC classification number: H04B10/0775 ,  H04B2210/075

Abstract: The invention provides a method and system for selectively canceling a specified frequency band in the payload of an optical communication system. This selected frequency band is to be used for launching pilot tones for power measurement and identification. The method controls the intensity of the optical payload signal through an intensity modulator that is included in the optical communication system. The frequency band in payload to be cancelled is removed where as the other frequency components of the payload are passed without attenuation. An embodiment that uses a feed-forward unit, a feedback unit and a control unit for generating a cancellation signal for the intensity modulator is described. An advantage of the method is that it removes a continuum of payload tones in the specified frequency band to be cancelled.

Abstract translation: 本发明提供一种用于选择性地取消光通信系统的有效载荷中的指定频带的方法和系统。 该选择的频段将用于启动用于功率测量和识别的导频音。 该方法通过包括在光通信系统中的强度调制器来控制光负载信号的强度。 去除有效载荷中要被取消的频带，其中有效负载的其他频率分量通过而不衰减。 描述了使用前馈单元，反馈单元和用于产生强度调制器的消除信号的控制单元的实施例。 该方法的一个优点是它去除了要被取消的指定频带中的有效负载音调的连续体。

公开(公告)号：US07184434B2

公开(公告)日：2007-02-27

申请号：US10107333

申请日：2002-03-28

Applicant: Sudhakar Ganti ,  Nabil Seddigh ,  Biswayjit Nandy

Inventor： Sudhakar Ganti ,  Nabil Seddigh ,  Biswayjit Nandy

IPC: H04L12/56

CPC classification number: H04L12/64

Abstract: A multi-protocol label switching (MPLS) packet network, methods and traffic engineering extensions to label distribution protocol are provided, capable of carrying traffic of multiple classes of service over the same label switch path.

Abstract translation: 提供了多协议标签交换（MPLS）分组网络，标签分发协议的方法和流量工程扩展，能够通过相同的标签交换路径承载多个业务类型的流量。

公开(公告)号：US07170895B2

公开(公告)日：2007-01-30

申请号：US10108515

申请日：2002-03-29

Applicant: Brian Michael Wirth ,  Thomas George Zboril ,  Dan Oprea

Inventor： Brian Michael Wirth ,  Thomas George Zboril ,  Dan Oprea

IPC: H04L12/28 ,  H04Q11/00 ,  G08C15/00

CPC classification number: H04L12/42 ,  H04L49/15 ,  H04L49/30 ,  H04L49/552 ,  H04L69/40

Abstract: A switch module for a communication network switch comprises first and second switching units each for communicating with one or more network communication interfaces, and a switch interface connected to each of the first and second switching units and having a pair of communication ports for enabling data to be transferred on to a local communication path which is connected between the local communication ports.

Abstract translation: 用于通信网络交换机的交换机模块包括：第一和第二交换单元，每个交换单元用于与一个或多个网络通信接口通信，以及连接到第一和第二交换单元中的每一个的交换机接口，并且具有一对通信端口， 被传送到连接在本地通信端口之间的本地通信路径。

公开(公告)号：US20060288102A1

公开(公告)日：2006-12-21

申请号：US11452922

申请日：2006-06-15

Applicant: John Spicer ,  Kelvin Edmison ,  Clarey Marchand

Inventor： John Spicer ,  Kelvin Edmison ,  Clarey Marchand

IPC: G06F15/173

CPC classification number: H04L43/0817 ,  H04L41/0213 ,  H04L43/065

Abstract: The invention provides an improved management of network devices in a communication network by extending the Simple Network Management Protocol (SNMP), which provides an effective identifying of the Management Client originating a request and sends rich textual status and error responses from the network device.

Abstract translation: 本发明通过扩展简单网络管理协议（SNMP）来提供对通信网络中的网络设备的改进的管理，该简单网络管理协议（SNMP）提供管理客户机的有效识别，该管理客户端发起请求并从网络设备发送富文本状态和错误响应。

公开(公告)号：US07139486B2

公开(公告)日：2006-11-21

申请号：US10635544

申请日：2003-08-07

Applicant: Ping Wai Wan ,  Derrick Remedios ,  Dan Oprea ,  Patrick Chilufya Chimfwembe

Inventor： Ping Wai Wan ,  Derrick Remedios ,  Dan Oprea ,  Patrick Chilufya Chimfwembe

IPC: H04J14/02

CPC classification number: H04B10/25073 ,  H04B2210/258 ,  H04J14/0201 ,  H04J14/0221

Abstract: An optical add/drop multiplexing (OADM) apparatus and method are disclosed for detecting pilot tones, removing ghost tones, and re-inserting pilot tones on WDM signals in an optical network. The OADM apparatus comprises a smart processing and control unit (PCU) for detecting pilot tones used for channel identifications, including identifying and removing ghost tones associated with respective optical channels, and re-inserting the processed pilot tones into the respective optical channels. The OADM apparatus and method may incorporate digital PCU or analog PCU for processing pilot tones and removing ghost tones.

Abstract translation: 公开了一种用于检测导频音调，去除重影音调以及在光网络中的WDM信号上重新插入导频音调的光分插复用（OADM）装置和方法。 OADM装置包括用于检测用于信道标识的导频音调的智能处理和控制单元（PCU），包括识别和去除与相应的光信道相关联的重音，并将处理的导频音重新插入相应的光信道。 OADM装置和方法可以包括用于处理导频音和去除重音的数字PCU或模拟PCU。

公开(公告)号：US07127165B2

公开(公告)日：2006-10-24

申请号：US10628418

申请日：2003-07-29

Applicant: Paul David Obeda ,  Robert Michael Bierman ,  James Benson Bacque ,  Colin Geoffrey Kelly ,  Derrick Remedios ,  Ping Wai Wan

Inventor： Paul David Obeda ,  Robert Michael Bierman ,  James Benson Bacque ,  Colin Geoffrey Kelly ,  Derrick Remedios ,  Ping Wai Wan

IPC: H04B10/08

CPC classification number: H04B10/079 ,  H04B10/07955 ,  H04B2210/075

Abstract: A method and system for compensating for side effects of cross gain modulation in amplified optical networks, which allows reliable identification of expected and unexpected channels in the network is provided. Each optical channel traveling in the optical network is marked with a unique channel signature (expected channel signature), having one or more dither tone modulated onto the optical channel; followed by detecting a spectrum of tones, including said modulated dither tones and ghost tones thereof produced by the cross gain modulation in the optical network, at various locations in the optical network. Amplitudes of the spectrum tones, which belong to the expected channel signature, are compared with a first threshold, while amplitudes of the remaining spectrum tones, which are not the valid tones, are compared with a second threshold, which is lower than the first threshold. The spectrum tones are identified as valid tones if their amplitudes are above the first threshold; and an alarm signaling that the expected channel signature is missing is generated if the amplitude of the spectrum tone is below the first threshold. Yet another alarm is generated signaling that an unexpected channel is detected in the network if the amplitude of at least one of the remaining spectrum tones is exceeding the second threshold. Alternatively, the other alarm is generated if amplitudes of the remaining spectrum tones belonging to one of the allowable channel signatures in the network are above the second threshold. A corresponding system incorporating the step of the methods described above is also provided.

Abstract translation: 提供了一种用于补偿放大光网络中交叉增益调制的副作用的方法和系统，其允许可靠地识别网络中的预期和意外信道。 在光网络中行进的每个光信道被标记为具有调制到光信道上的一个或多个抖动音调的唯一信道签名（预期信道签名）; 随后在光网络中的各个位置处检测包括由光网络中的交叉增益调制产生的所述调制抖动音和其重音的音调。 将属于预期信道签名的频谱音调的幅度与第一阈值进行比较，而不是有效音调的剩余频谱音调的幅度与低于第一阈值的第二阈值进行比较 。 如果它们的幅度高于第一阈值，则频谱色调被识别为有效音调; 并且如果频谱色调的幅度低于第一阈值，则产生警告，指示预期信道签名丢失。 如果剩余频谱色调中的至少一个的幅度超过第二阈值，则产生另一报警，指示在网络中检测到意外信道。 或者，如果属于网络中的一个可允许频道签名的剩余频谱的幅度高于第二阈值，则产生另一警报。 还提供了包括上述方法的步骤的相应系统。

公开(公告)号：US07126970B2

公开(公告)日：2006-10-24

申请号：US10173304

申请日：2002-06-18

Applicant: Thomas George Zboril

Inventor： Thomas George Zboril

IPC: H04J3/04 ,  G01R31/08

CPC classification number: H04J3/14 ,  H04L7/02 ,  H04L7/046 ,  H04L7/08 ,  H04L49/15 ,  H04L49/20 ,  H04L49/253 ,  H04L49/30 ,  H04L49/50 ,  H04L49/506 ,  H04L2012/5624

Abstract: A communication system such as a distributed packet switch, is described, including multiple nodes with bi-directional transmission links between the nodes, each link comprising of a set of multiple links in parallel. The system provides an automatic balancing the aggregate capacity of one set of links in a proportion “M:N” to the aggregate capacity of the other set of links under varying link conditions, including one or more individual link failures in one or both sets of links.