公开(公告)号：US20130024500A1

公开(公告)日：2013-01-24

申请号：US13621990

申请日：2012-09-18

Applicant: SYCAMORE NETWORKS, INC

Inventor： Yang CAO ,  Michael NICOLAZZO ,  William M. TURNER ,  Talbot HACK ,  Moshe SUBERRI

IPC: G06F15/16

CPC classification number: H04L67/2819 ,  H04L67/2842

Abstract: A method in an electronic device provides local content to a user device in a communication network. The communication network includes an access network and a core network. In the access network, a content request is intercepted from the user device, which may be formatted according to a network interface. The content request may include a request for data content. Protocol layers associated with an active data session may be terminated so that an edge gateway device may extract and inject packets into the data stream without involving the core network. A cache may be maintained in the access network.

Abstract translation: 电子设备中的方法向通信网络中的用户设备提供本地内容。 通信网络包括接入网络和核心网络。 在接入网络中，从用户设备拦截内容请求，该请求可以根据网络接口进行格式化。 内容请求可以包括对数据内容的请求。 可以终止与活动数据会话相关联的协议层，使得边缘网关设备可以提取并将分组注入到数据流中而不涉及核心网络。 可以在接入网络中维护高速缓存。

公开(公告)号：US20030219198A1

公开(公告)日：2003-11-27

申请号：US10154223

申请日：2002-05-22

Applicant: Sycamore Networks, Inc.

Inventor： Jianying Zhou

IPC: G02B006/28

CPC classification number: H04Q11/0005 ,  G02B6/29376 ,  G02B6/29394 ,  H01S5/0014 ,  H04Q2011/0049

Abstract: A method of dispersion compensation for an optical network divides the optical fiber transmission line into sections located between a pair of re-configurable nodes. For each section, at either one of the pair of nodes, wavelengths are classified into a first set of added waves, a second set of dropped waves and a third set of express waves. A first predetermined dispersion compensation is provided to the third set of express waves so that the third set of express waves have a second predetermined dispersion. Methods for determining linear and nonlinear impairment parameters so that the optical parameters due to both linear and nonlinear transmission impairments of each section can be independent obtained and disseminated throughout the network.

Abstract translation: 用于光网络的色散补偿方法将光纤传输线路划分成位于一对可重配置节点之间的部分。 对于每个部分，在该对节点中的任一个节点处，波长被分类为第一组附加波，第二组波浪和第三组快速波。 向第三组快速波提供第一预定色散补偿，使得第三组快速波具有第二预定色散。 用于确定线性和非线性损伤参数的方法，使得由于每个部分的线性和非线性传输损伤的光学参数可以独立地获得并在整个网络中传播。

公开(公告)号：US20030016809A1

公开(公告)日：2003-01-23

申请号：US09910652

申请日：2001-07-19

Applicant: Sycamore Networks, Inc.

Inventor： Raymond Yinggang Xie

IPC: H04M007/00 ,  H04M003/00

CPC classification number: H04M3/2263 ,  H04M7/0096

Abstract: A method and apparatus are provided for the management of multiple-node networks to provide for efficient and rapid determination of an alternative connection path through the network to avoid a fault in the connection path. The present invention seeks to minimize the number of nodes affected by the alternative connection path by systematically seeking alternative, non-retracing connection paths from nodes neighboring the connection fault. Until an alternative connection is found, searches are conducted from nodes further from the connection fault. Optionally, the present invention may use a retracing path to establish a connection.

Abstract translation: 提供了一种用于管理多节点网络以提供通过网络的替代连接路径的有效和快速确定以避免连接路径中的故障的方法和装置。 本发明寻求通过从邻近于连接故障的节点系统寻求替代的非回溯连接路径来最小化受备用连接路径影响的节点的数量。 在找到替代连接之前，从连接故障进一步的节点进行搜索。 可选地，本发明可以使用回溯路径来建立连接。

公开(公告)号：US20020015201A1

公开(公告)日：2002-02-07

申请号：US09906195

申请日：2001-07-16

Applicant: SYCAMORE NETWORKS, INC.

Inventor： Jianying Zhou ,  Richard A. Barry ,  Murat Azizoglu ,  Eric A. Swanson

IPC: H04B010/08 ,  H04J014/02

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

Abstract: A Dense Wavelength Division Multiplexed (DWDM) optical transmission system that compensates for unequal channel performance over an extended fiber transmission distance. The DWDM optical transmission system includes optical transmitters at a transmitter end of a transmission path for transmitting respective channels of information at different wavelengths, a first pre-emphasis device for performing a first pre-emphasis technique on the respective channels, an optical multiplexor for combining the respective channels into a multi-wavelength optical signal for transmission on a single transmission fiber, at least one optical amplifier for amplifying the optical signal along the path, at least one second pre-emphasis device disposed along the path for performing a second pre-emphasis technique on the respective channels, an optical de-multiplexor for separating the optical signal into its component channels, and optical receivers at a receiver end of the path for receiving and detecting the information carried by the respective channels. The first and second pre-emphasis techniques performed by the respective first and second pre-emphasis devices compensate for unequal channel performance along the transmission path over a desired fiber transmission distance.

公开(公告)号：US09143575B2

公开(公告)日：2015-09-22

申请号：US13621990

申请日：2012-09-18

Applicant: SYCAMORE NETWORKS, INC.

Inventor： Yang Cao ,  Michael Nicolazzo ,  William M. Turner ,  Talbot Hack ,  Moshe Suberri

IPC: G06F15/16 ,  H04L29/08

CPC classification number: H04L67/2819 ,  H04L67/2842

Abstract: A method in an electronic device provides local content to a user device in a communication network. The communication network includes an access network and a core network. In the access network, a content request is intercepted from the user device, which may be formatted according to a network interface. The content request may include a request for data content. Protocol layers associated with an active data session may be terminated so that an edge gateway device may extract and inject packets into the data stream without involving the core network. A cache may be maintained in the access network.

Abstract translation: 电子设备中的方法向通信网络中的用户设备提供本地内容。 通信网络包括接入网络和核心网络。 在接入网络中，从用户设备拦截内容请求，该请求可以根据网络接口进行格式化。 内容请求可以包括对数据内容的请求。 可以终止与活动数据会话相关联的协议层，使得边缘网关设备可以提取并将分组注入到数据流中而不涉及核心网络。 可以在接入网络中维护高速缓存。

公开(公告)号：US20040208585A1

公开(公告)日：2004-10-21

申请号：US10103160

申请日：2002-03-20

Applicant: Sycamore Networks, Inc.

Inventor： Jinendra Kumar Ranka

IPC: H04J014/02 ,  H01S003/00

CPC classification number: H04J14/02 ,  H01S3/302 ,  H04B10/2916 ,  H04J14/0221

Abstract: An optical transmission system with two counter propagating wavelength division multiplexed (WDM) optical signals carried by an optical fiber transmission line, has a first Raman pump for launching a first beam of pump energy for amplifying both WDM signals so that the first beam counter-propagates with respect to a first WDM signal The system also includes a second Raman pump for launching a second beam of pump energy for amplifying both WDM signals so that the second beam counter-propagates with respect to a second WDM signal.

Abstract translation: 具有由光纤传输线承载的两个反向传播波分复用（WDM）光信号的光传输系统具有第一拉曼泵，用于发射第一波束能量以放大两个WDM信号，使得第一光束反向传播 相对于第一WDM信号，系统还包括第二拉曼泵，用于发射第二波束泵浦能量以放大两个WDM信号，使得第二波束相对于第二WDM信号反向传播。

公开(公告)号：US20030191883A1

公开(公告)日：2003-10-09

申请号：US10117363

申请日：2002-04-05

Applicant: Sycamore Networks, Inc.

Inventor： Steven J. April

IPC: G06F013/14

CPC classification number: H04L49/351 ,  H04L49/102 ,  H04L49/352

Abstract: An interface device having a plurality of ports with a plurality of speed configurations for a serial backplane with 2-pair copper transmission lines, has a plurality of high speed Ethernet ports and a plurality of Gigabit Ethernet ports. A switch mechanism for selecting between the high speed Ethernet ports and the Gigabit Ethernet ports will connect the selected port to the serial backplane via the 2-pair copper transmission lines.

Abstract translation: 具有多个具有多对速度配置的端口的接口设备具有多对高速以太网端口和多个千兆以太网端口，所述多个端口具有用于具有2对铜传输线的串行背板。 用于在高速以太网端口和千兆以太网端口之间进行选择的开关机构将通过2对铜线传输线将所选端口连接到串行背板。

公开(公告)号：US20020101637A1

公开(公告)日：2002-08-01

申请号：US10004088

申请日：2001-10-23

Applicant: Sycamore Networks, Inc.

Inventor： Jinghui Li

IPC: H04J014/02

CPC classification number: H04J14/0206 ,  H04J14/0221

Abstract: A method of channel balance for a channel balance section in an WDM optical network with a starting node, an ending node and a plurality of intermediate OADNs (Optical Add Drop Node) first determines express wavelengths and non-express wavelengths starting from the starting node, then calculates TX (transmitter) power change which will bring the express channel performance to a target value and sets TX power using obtained TX power value. The method then moves to non-express channels by calculating TX power change for each non-express channel and sets TX power using obtained TX power value. Lastly, for each intermediate OADN, the method calculates TX power change for each added channel in each OADN and sets TX power using obtained TX power value.

Abstract translation: 一种具有起始节点，终止节点和多个中间OADN（光插入节点）的WDM光网络中的信道平衡部分的信道平衡方法首先从起始节点开始确定明确的波长和非快速波长， 然后计算TX（发射机）功率变化，这将使快速通道性能达到目标值，并使用获得的TX功率值设置TX功率。 然后，该方法通过计算每个非快速信道的TX功率变化而移动到非快速信道，并使用获得的TX功率值设置TX功率。 最后，对于每个中间OADN，该方法计算每个OADN中每个附加信道的TX功率变化，并使用获得的TX功率值设置TX功率。

公开(公告)号：US20030095500A1

公开(公告)日：2003-05-22

申请号：US10004475

申请日：2001-10-23

Applicant: Sycamore Networks, Inc.

Inventor： Yang Cao

IPC: G01R031/08

CPC classification number: H04J14/0295 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0284 ,  H04L41/0663 ,  H04L41/12 ,  H04L45/02 ,  H04L45/28

Abstract: A method for shared distributed mesh optical network restoration includes defining a set of attributes for the links, which further includes globally disseminated and locally kept attributes. The method further includes finding a SRLG-disjoint diversely routed paths, including allocating resources by updating attributes along the links on the backup path. The fault recovery process is started by first detecting and propagating the fault to the tail end of the faulty path, starting from tail end node, for each node along the faulty path. Recovery information is then passed to an egress port. An OXC is configured, updating reserved resource by modifying the attributes for each involved link. Further fault information is disseminated to the network.

Abstract translation: 用于共享分布式网格光网络恢复的方法包括定义用于链路的一组属性，其还包括全局传播和本地保持的属性。 该方法还包括找到SRLG不相交的不同路由路径，包括通过沿备份路径上的链路​​更新属性来分配资源。 通过首先从故障路径的尾端检测并将故障传播到故障路径的每个节点，从尾端节点开始，故障恢复过程开始。 然后将恢复信息传递到出口端口。 配置OXC，通过修改每个相关链路的属性来更新预留资源。 进一步的故障信息传播到网络。

公开(公告)号：US20020041410A1

公开(公告)日：2002-04-11

申请号：US09899358

申请日：2001-07-05

Applicant: SYCAMORE NETWORKS, INC.

Inventor： Naimish Patel ,  Murat Azizoglu ,  Edmond Lee

IPC: H04B010/08 ,  H04J014/02

CPC classification number: H04J14/0295 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0287 ,  H04Q11/0062 ,  H04Q2011/0081 ,  H04Q2011/0086 ,  H04Q2011/0088

Abstract: Methods for allocating connections between nodes in an optical ring communications network are provided. In these methods, working path connections are assigned so that the combination of required wavelengths and wavelength interface cards (WICs) in the network is minimized. In one such method, the wavelengths for the working path connections are assigned so that lightpaths are connected around the ring to complete a circle. In another method, components of lightpaths are connected so that a linked component group of lightpaths is formed around the ring until no more connectable lightpath connections are available or until a complete circle is formed around the ring.

Abstract translation: 提供了在光环通信网络中的节点之间分配连接的方法。 在这些方法中，分配工作路径连接，使得网络中所需波长和波长接口卡（WIC）的组合被最小化。 在一种这样的方法中，分配用于工作路径连接的波长，使得光环围绕环连接以完成圆。 在另一种方法中，光路的组件被连接，使得围绕环形成连接的光路组件组，直到没有可连接的光路连接可用或者直到在环周围形成完整的圆。