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1. 发明授权

US07969868B2 Path-level protection for digitally wrapped payloads 有权
标题翻译：数字封装有效载荷的路径级保护
公开(公告)号：US07969868B2
公开(公告)日：2011-06-28
申请号：US12388561
申请日：2009-02-19
申请人： Christopher C. Liou , Rajasekar Venkatesan , Biao Lu , George Frank
发明人： Christopher C. Liou , Rajasekar Venkatesan , Biao Lu , George Frank
IPC分类号： G01R31/08 , H04L12/26
CPC分类号： H04L45/00 , H04J3/14 , H04L43/0811 , H04L45/22 , H04L45/28 , H04L45/50
摘要： A node, of a group of nodes, may detect a failure on a first path; establish a connection associated with a second path when the failure on the first path is detected; store an identifier in a field in an overhead portion of a data frame when the failure on the first path is detected, the data frame including a payload portion that contains a client signal, the identifier instructing another one of the nodes to establish a connection associated with the second path; and transmit the data frame to the other one of the nodes via the second path.
摘要翻译：一组节点的节点可以检测第一路径上的故障; 当检测到第一路径上的故障时，建立与第二路径相关联的连接; 当检测到第一路径上的故障时，在数据帧的开销部分中的字段中存储标识符，该数据帧包括包含客户端信号的有效载荷部分，该标识符指示节点中的另一个建立与之相关联的连接与第二条路径; 并且经由第二路径将数据帧发送到另一个节点。

2. 发明授权

US09832107B2 Misconnection avoidance on networks 有权
公开(公告)号：US09832107B2
公开(公告)日：2017-11-28
申请号：US12897608
申请日：2010-10-04
申请人： Ping Pan , Rajan Rao , Biao Lu
发明人： Ping Pan , Rajan Rao , Biao Lu
IPC分类号： H04L12/28 , G01R31/08 , H04J3/00 , H04B7/212 , H04L12/703 , H04L12/24
CPC分类号： H04L45/28 , H04L41/0663
摘要： A switch node provided with a switch, an input interface and an output interface. The input interface is adapted to couple to a first communication link to receive a first TDM frame having a user payload field containing a first user data from the first communication link, and a frame overhead field containing a first identification. The input interface is configured to validate the first identification in the frame overhead field and reject the first TDM frame responsive to the first identification being invalid, and to forward the first user data to the switch responsive to the first identification being valid. The output interface is adapted to couple to a second communication link. The output interface is configured to receive the first user data from the switch, and to generate a second TDM frame having a second user payload field containing the first user data, and a second frame overhead field containing a second identification that is different from the first identification. The output interface is also configured to transmit the second TDM frame onto the second communication link.

3. 发明授权

US09755937B2 Supporting OAM on protecting connections in shared mesh protection environment 有权
公开(公告)号：US09755937B2
公开(公告)日：2017-09-05
申请号：US13248102
申请日：2011-09-29
申请人： Sri Mohana Satya Srinivas Singamsetty , Ping Pan , Biao Lu , Rajan Rao
发明人： Sri Mohana Satya Srinivas Singamsetty , Ping Pan , Biao Lu , Rajan Rao
IPC分类号： H04L12/26 , H04L12/707 , H04L12/703 , H04L12/721 , H04L12/723
CPC分类号： H04L43/10 , H04L45/22 , H04L45/26 , H04L45/28 , H04L45/50
摘要： A method for detecting the liveliness and synchronizing the control-plane and data-plane on protecting connections in a shared mesh network environment through methods for probing the protecting connection conditions by sending in-band messages; and synchronization of control plane and data plane by using LSP-ping messages on the protecting connections.

4. 发明授权

US09485015B2 Optical layer status exchange over OSC-OAM method for ROADM networks 有权
标题翻译：用于ROADM网络的OSC-OAM方法的光层状态交换
公开(公告)号：US09485015B2
公开(公告)日：2016-11-01
申请号：US13452413
申请日：2012-04-20
申请人： Rajan Rao , Edward E. Sprague , Biao Lu , Sharfuddin Syed
发明人： Rajan Rao , Edward E. Sprague , Biao Lu , Sharfuddin Syed
IPC分类号： H04B10/077 , H04J14/02 , H04J3/14
CPC分类号： H04B10/0773 , H04B2210/072 , H04J3/14 , H04J14/0212 , H04J14/0268 , H04J14/0273 , H04J14/0275 , H04J2203/0057 , H04J2203/006 , H04J2203/0096
摘要： A method for receiving, by circuitry of an optical node adapted for wavelength multiplexing and wavelength switching, a signal over OSC comprising overhead information indicative of status of at least one of an optical layer in an OTN; wherein the signal utilizes OC-N frame format comprising a first STS frame, a second STS frame, and a third STS frame, the STS frames having a format wherein the information is assigned to a number of bits designated for OAM information, wherein the bits are assigned to bytes within a transport overhead portion of the STS frame format within the OC-N frame format; terminating, by circuitry of the optical node, the signal at the optical node; and notifying, by circuitry of the optical node, software of the status of the optical layer in the OTN.
摘要翻译：一种用于通过适用于波长多路复用和波长切换的光节点的电路接收包括指示OTN中的光层中的至少一个状态的开销信息的OSC上的信号的方法; 其中所述信号利用包括第一STS帧，第二STS帧和第三STS帧的OC-N帧格式，所述STS帧具有其中所述信息被分配给指定用于OAM信息的比特数的格式，其中所述比特被分配给OC-N帧格式的STS帧格式的传输开销部分内的字节; 通过光节点的电路终止光节点处的信号; 并通过光节点的电路通知OTN中光层的状态的软件。

5. 发明授权

US09385943B2 Encoding and processing of signaling messages for ODU SMP 有权
标题翻译：用于ODU SMP的信令消息的编码和处理
公开(公告)号：US09385943B2
公开(公告)日：2016-07-05
申请号：US13310233
申请日：2011-12-02
申请人： Ping Pan , Radhakrishna Valiveti , Rajan Rao , Biao Lu
发明人： Ping Pan , Radhakrishna Valiveti , Rajan Rao , Biao Lu
IPC分类号： H04J14/02 , H04J3/12 , H04L12/703 , H04J3/16 , H04L12/721 , H04L12/723
CPC分类号： H04L45/28 , H04J3/12 , H04J3/1652 , H04J14/0258 , H04J14/0284 , H04J14/0295 , H04J2203/006 , H04L45/50 , H04L45/62
摘要： Methods and nodes are disclosed for the support of traffic protection and recovery in mesh networks having multiple nodes communicating via communication links. The problem of timely and reliable Shared Mesh Protection message delivery is addressed through creation of protocols and encoding of Shared Mesh Protection messages within an overhead of the optical data unit container, and by processing the Shared Mesh Protection messages by intermediate nodes of the mesh network. Thus, the Shared Mesh Protection messages are transmitted through the data plane with the transmission of user data.
摘要翻译：公开了用于支持具有经由通信链路进行通信的多个节点的网状网络中的流量保护和恢复的方法和节点。通过在光学数据单元容器的开销内创建共享网格保护消息的协议和编码以及通过网状网络的中间节点处理共享网格保护消息来解决及时可靠的共享网格保护消息传递的问题。因此，共享网格保护消息通过用户数据的传输通过数据平面发送。

6. 发明授权

US09172489B2 Discovery of an adjacent network element within a network data plane 有权
标题翻译：发现网络数据平面内的相邻网元
公开(公告)号：US09172489B2
公开(公告)日：2015-10-27
申请号：US11419419
申请日：2006-05-19
申请人： Biao Lu , Mohit Misra , Maneesh Jain , Shankara Ramamurthy
发明人： Biao Lu , Mohit Misra , Maneesh Jain , Shankara Ramamurthy
IPC分类号： H04J14/02 , H04L12/721 , H04Q11/00
CPC分类号： H04J14/0227 , H04J14/0241 , H04J14/0279 , H04L45/62 , H04Q11/0062 , H04Q11/0071 , H04Q2011/0088
摘要： The present invention provides a system, apparatus and method for discovery of network elements, which are adjacent within the network data plane but may or may not be adjacent in the network control plane. In one embodiment of the present invention, digital network elements, with a plurality thereof having a lambda switching capability (hereinafter “LSC”) interface, is provided. A digital network element with an LSC interface originates and sends a local advertisement to its immediate control neighbor. Using this LSC originated advertisements; a neighboring network element may be discovered that is adjacent on the network data plane.
摘要翻译：本发明提供了一种用于发现网络元件的系统，装置和方法，所述网络元件在网络数据平面内相邻，但在网络控制平面中可能相邻或不相邻。在本发明的一个实施例中，提供具有多个具有λ切换能力（以下称为“LSC”）接口的数字网元。具有LSC接口的数字网元发起并发送本地广告到其即时控制邻居。使用这个LSC发起广告; 可以发现在网络数据平面上相邻的相邻网元。

7. 发明授权

US08488963B2 Link diversity and load balancing across digital and optical express-thru nodes 有权
标题翻译：数字和光通信节点之间的链路分集和负载平衡
公开(公告)号：US08488963B2
公开(公告)日：2013-07-16
申请号：US12165502
申请日：2008-06-30
申请人： Ashok Kunjidhapatham , Mohit Misra , Biao Lu
发明人： Ashok Kunjidhapatham , Mohit Misra , Biao Lu
IPC分类号： H04J14/00
CPC分类号： H04L45/22 , H04L45/02 , H04L45/62
摘要： The present invention provides a system, apparatus and method to compute a route through a network having both digital nodes and optical express-thru nodes. According to various embodiments of the invention, a network topology is generated in which both digital nodes, optical express-thru nodes, and optical nodes are identified, and both physical and virtual links between these nodes are mapped. The network connectivity is identified, at least in part, by broadcasting a local link state advertisement and optical carrier group binding information to neighboring nodes, which enables both physical and virtual neighboring nodes to be identified. Once a topology is generated, both physical and virtual link characteristics are analyzed to ensure link diversity for traffic through the network and load balancing functionality across the network.
摘要翻译：本发明提供了一种通过具有数字节点和光通信节点的网络来计算路由的系统，装置和方法。根据本发明的各种实施例，生成网络拓扑，其中标识数字节点，光学直通节点和光学节点，并且映射这些节点之间的物理和虚拟链路。至少部分地通过将本地链路状态广告和光载波组绑定信息广播到相邻节点来识别网络连接，这使得能够识别物理和虚拟相邻节点。一旦生成拓扑，就分析物理和虚拟链路特性，以确保通过网络的流量和网络中的负载平衡功能的链路分集。

8. 发明申请

US20130071117A1 Encoding & Processing of Signaling Messages for ODU SMP 有权
标题翻译：用于ODU SMP的信令消息的编码和处理
公开(公告)号：US20130071117A1
公开(公告)日：2013-03-21
申请号：US13310233
申请日：2011-12-02
申请人： Ping Pan , Radhakrishna Valiveti , Rajan Rao , Biao Lu
发明人： Ping Pan , Radhakrishna Valiveti , Rajan Rao , Biao Lu
IPC分类号： H04J14/00
CPC分类号： H04L45/28 , H04J3/12 , H04J3/1652 , H04J14/0258 , H04J14/0284 , H04J14/0295 , H04J2203/006 , H04L45/50 , H04L45/62
摘要： Methods and nodes are disclosed for the support of traffic protection and recovery in mesh networks having multiple nodes communicating via communication links. The problem of timely and reliable Shared Mesh Protection message delivery is addressed through creation of protocols and encoding of Shared Mesh Protection messages within an overhead of the optical data unit container, and by processing the Shared Mesh Protection messages by intermediate nodes of the mesh network. Thus, the Shared Mesh Protection messages are transmitted through the data plane with the transmission of user data.
摘要翻译：公开了用于支持具有经由通信链路进行通信的多个节点的网状网络中的流量保护和恢复的方法和节点。通过在光学数据单元容器的开销内创建共享网格保护消息的协议和编码以及通过网状网络的中间节点处理共享网格保护消息来解决及时可靠的共享网格保护消息传递的问题。因此，共享网格保护消息通过用户数据的传输通过数据平面传输。

9. 发明申请

US20120106956A1 GMPLS Signaling for Networks Having Multiple Multiplexing Levels 有权
标题翻译：具有多重复用级别的网络的GMPLS信令
公开(公告)号：US20120106956A1
公开(公告)日：2012-05-03
申请号：US12977696
申请日：2010-12-23
申请人： Rajan Rao , Khuzema Pithewan , Ashok Kunjidhapatham , Biao Lu , Mohit Misra
发明人： Rajan Rao , Khuzema Pithewan , Ashok Kunjidhapatham , Biao Lu , Mohit Misra
IPC分类号： H04J14/08
CPC分类号： H04J3/1652 , H04J3/12 , H04J3/14 , H04J2203/006 , H04J2203/0089 , H04L45/50
摘要： A method comprising the steps of receiving, with circuitry at a first node, a signal indicative of a request to set up an optical channel data unit label switched path between the first node and a second node in a network. Time slots for a plurality of types of signals to be transmitted from the first node to the second node are reserved, and a set up message is transmitted from the first node to the second node. The set up message identifies the plurality of signal types and the reserved time slots. The optical channel data unit label switched path is then provided between the first and second nodes.
摘要翻译：一种方法，包括以下步骤：在第一节点处的电路接收指示在网络中的第一节点和第二节点之间建立光信道数据单元标签交换路径的请求的信号。保留要从第一节点发送到第二节点的多种类型的信号的时隙，并且从第一节点向第二节点发送建立消息。建立消息识别多个信号类型和保留的时隙。然后，在第一和第二节点之间提供光信道数据单元标签交换路径。

10. 发明授权

US08165017B2 GMPLS fast re-route for OADM and AUX 10MBPS support 有权
标题翻译： GMPLS快速重新路由OADM和AUX 10MBPS支持
公开(公告)号：US08165017B2
公开(公告)日：2012-04-24
申请号：US13027156
申请日：2011-02-14
申请人： Biao Lu
发明人： Biao Lu
IPC分类号： G01R31/08
CPC分类号： H04L45/16 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/50 , H04L45/54
摘要： Embodiments of the present invention provide a GMPLS fast re-route of packets within a network using a multicast address and a table comprising a list of alias IP addresses. According to various embodiments of the invention an alternate data path from a source node to a destination node allows a packet to traverse to the destination node without IP forwarding techniques being applied. In other words, a tunneling effect from a source node to a destination node allows other nodes in the network to ignore the packet and only read the multicast address within the header and immediately forward the packet to the destination node. A predetermined set of IP addresses are determined from network topology including all potential paths, for a packet to traverse, to a destination address.
摘要翻译：本发明的实施例使用多播地址和包括别名IP地址列表的表格来提供GMPLS快速重新路由网络内的分组。根据本发明的各种实施例，从源节点到目的地节点的备用数据路径允许分组穿过目的地节点，而不应用IP转发技术。换句话说，从源节点到目的地节点的隧道效应允许网络中的其他节点忽略分组，并且仅读取报头内的多播地址，并立即将分组转发到目的地节点。从网络拓扑确定预定的一组IP地址，包括用于遍历的分组的所有潜在路径到目的地地址。

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