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1. 发明授权

US09800522B2 Make-before-break systems and methods decoupling a control plane from a data plane 有权
公开(公告)号：US09800522B2
公开(公告)日：2017-10-24
申请号：US14554115
申请日：2014-11-26
申请人： Mohit Chhillar , Anurag Prakash , Gerard Leo Swinkels
发明人： Mohit Chhillar , Anurag Prakash , Gerard Leo Swinkels
IPC分类号： H04L12/939 , H04L12/911 , H04L12/703 , H04L12/937 , H04L12/715 , H04L12/707
CPC分类号： H04L49/557 , H04L45/22 , H04L45/28 , H04L45/64 , H04L47/72 , H04L49/253
摘要： A Make-Before-Break (MBB) method, in a node operating in a network with a control plane, decoupling the control plane from a data plane, includes, for a connection operating on a path in the network, determining a reserved connection on a new path, through the control plane, wherein the reserved connection has zero bandwidth; signaling the reserved connection on the new path; creating the reserved connection in the control plane while suspending implementation in the data plane due to the zero bandwidth; and releasing the connection on the path and modifying the reserved connection on the new path to establish the connection on the new path.

2. 发明授权

US09628172B2 Optimization of photonic services with colorless and directionless architecture 有权
公开(公告)号：US09628172B2
公开(公告)日：2017-04-18
申请号：US14554145
申请日：2014-11-26
申请人： Anurag Prakash , Mohit Chhillar , Gerard Leo Swinkels
发明人： Anurag Prakash , Mohit Chhillar , Gerard Leo Swinkels
IPC分类号： H04B10/032 , H04J14/02
CPC分类号： H04B10/032 , H04J14/0291 , H04J14/0295
摘要： A method, in a node operating in a network with a control plane, to optimize wavelength retuning on service redials, includes detecting a failure on a link associated with the node; and, for each affected connections on the link, sending a respective release message to an associated originating node via the control plane, the release message including a protect path and a wavelength, wherein the release message is utilized by the associated originating node to redial the affected connections with the protect path and the wavelength determined by the node, to minimize wavelength retuning on the affected connections.

3. 发明授权

US09407359B2 Localized network repair systems and methods 有权
标题翻译：本地化网络维修系统和方法
公开(公告)号：US09407359B2
公开(公告)日：2016-08-02
申请号：US14482023
申请日：2014-09-10
申请人： Gerard Leo Swinkels , Mohit Chhillar , Anurag Prakash , Dominic Richens , Rajagopalan Kannan
发明人： Gerard Leo Swinkels , Mohit Chhillar , Anurag Prakash , Dominic Richens , Rajagopalan Kannan
IPC分类号： H04B10/00 , H04B10/03
CPC分类号： H04B10/03 , H04J14/021 , H04J14/0271 , H04J2203/006 , H04L45/00 , H04L45/22 , H04L45/28 , H04L45/62
摘要： A localized repair method in a network using a control plane includes, responsive to a failure on a local repair segment defined on a connection traversing the network, generating a release message in the control plane; attempting a local repair on the local repair segment; if the local repair is unsuccessful, transmitting the release message to redial the connection; and, if the local repair is successful, signaling a new sub-path based on the local repair. A controller and a network are also disclosed.
摘要翻译：使用控制平面的网络中的局部修复方法包括响应于在穿过网络的连接上定义的局部修复段上的故障，在控制平面中生成释放消息; 尝试在当地维修部门进行修理; 如果本地修复不成功，则发送释放消息重拨连接; 并且如果本地维修成功，则基于本地修复来发出新的子路径。还公开了控制器和网络。

4. 发明申请

US20170163489A1 CONTROL PLANE DISCOVERY OF SERVICES 审中-公开
公开(公告)号：US20170163489A1
公开(公告)日：2017-06-08
申请号：US14961352
申请日：2015-12-07
申请人： Anurag Prakash , Mohit Chhillar , Dominic Richens , Seemant Bisht
发明人： Anurag Prakash , Mohit Chhillar , Dominic Richens , Seemant Bisht
IPC分类号： H04L12/24 , H04B10/27
CPC分类号： H04L41/12 , H04B10/27 , H04J14/0227
摘要： A method for control plane discovery includes a plurality of network elements transmitting an outbound control plane communication to generate path information of a path through the network elements. The transmitting includes receiving, by an intermediate network element of the network elements, the outbound control plane communication on an optical layer ingress port, appending, by the intermediate network element, an intermediate network element identifier of the intermediate network element to the path information in the outbound control plane communication, and transmitting, by the intermediate network element, the outbound control plane communication via an electrical layer egress port based on the intermediate network element comprising a layer changing drop port. The method further includes the network elements receiving via the path, the path information via a returned control plane communication, storing the path information in the returned control plane communication, and operating a control plane using the path information.

5. 发明授权

US08682160B2 Path computation systems and methods in optical networks 有权
标题翻译：光网络中的路径计算系统和方法
公开(公告)号：US08682160B2
公开(公告)日：2014-03-25
申请号：US13420717
申请日：2012-03-15
申请人： Anurag Prakash , Mohit Chhillar , Marian Trnkus , Waseem Reyaz Khan
发明人： Anurag Prakash , Mohit Chhillar , Marian Trnkus , Waseem Reyaz Khan
IPC分类号： H04J14/00
CPC分类号： H04J14/0257 , H04J14/0206 , H04J14/0215 , H04J14/0217 , H04J14/0258 , H04J14/0267 , H04J14/0269 , H04J14/0271 , H04J14/0284
摘要： A path computation method includes defining photonic constraints associated with a network, wherein the photonic constraints include wavelength capability constraints at each node in the network, wavelength availability constraints at each node in the network, and nodal connectivity constraints of each node in the network, and performing a constrained path computation in the network using Dijkstra's algorithm on a graph model of the network with the photonic constraints considered therein. An optical network includes a plurality of interconnected nodes each including wavelength capability constraints, wavelength availability constraints, and nodal connectivity constraints, and a path computation element associated with the plurality of interconnected photonic nodes, wherein the path computation element is configured to perform a constrained path computation through the plurality of interconnected nodes using Dijkstra's algorithm on a graph model with the photonic constraints considered therein.
摘要翻译：路径计算方法包括定义与网络相关联的光子约束，其中光子约束包括网络中每个节点处的波长能力约束，网络中每个节点处的波长可用性约束以及网络中每个节点的节点连接约束，以及使用Dijkstra算法对其中考虑的光子约束的网络的图形模型执行网络中的约束路径计算。光网络包括多个互连节点，每个节点包括波长能力约束，波长可用性约束和节点连接性约束，以及与多个相互连接的光子节点相关联的路径计算元件，其中，路径计算元件被配置为执行约束路径在其中考虑的光子约束的图形模型上使用Dijkstra算法通过多个互连节点进行计算。

6. 发明授权

US09577782B2 Systems and methods for statistical multiplexing with OTN and DWDM 有权
标题翻译：用于OTN和DWDM进行统计复用的系统和方法
公开(公告)号：US09577782B2
公开(公告)日：2017-02-21
申请号：US14340788
申请日：2014-07-25
申请人： Anurag Prakash , Mohit Chhillar
发明人： Anurag Prakash , Mohit Chhillar
IPC分类号： H04J14/02
CPC分类号： H04B10/0795 , H04J3/1652 , H04J14/0227 , H04J14/0254 , H04J14/026 , H04J2203/0053 , H04L45/42 , H04L47/11 , H04L47/76 , H04L49/30 , H04L49/357 , H04L2012/5619
摘要： A method includes profiling user-network interface (UNI) ports including Optical channel Data Unit flex (ODUflex) in a network; and adapting, using a max-flow routing criterion, network-network interface (NNI) ports comprising ODUflex based on the profiling. A network includes a plurality of network elements; a plurality of links interconnecting the plurality of network elements, wherein the plurality of links includes Layer 0 Dense Wave Division Multiplexing (DWDM) bandwidth and Layer 1 Optical Transport Network (OTN) bandwidth; and a control plane operating between the plurality of network elements; wherein the Layer 0 DWDM bandwidth and the Layer 1 OTN bandwidth is statistically multiplexed using the control plane and manager based on monitoring bandwidth usage thereon over time.
摘要翻译：一种方法包括在网络中分析用户网络接口（UNI）端口，包括光信道数据单元灵活（ODUflex）; 并使用最大流量路由标准来适应基于分析的包含ODUflex的网络接口（NNI）端口。网络包括多个网元; 连接所述多个网络元件的多个链路，其中所述多个链路包括层0密集波分复用（DWDM）带宽和第1层光传输网络（OTN）带宽; 以及在所述多个网络元件之间操作的控制平面; 其中使用所述控制平面和管理器，基于随时间监视其带宽使用来对所述第0层DWDM带宽和所述第1层OTN带宽进行统计复用。

7. 发明授权

US09172658B2 Call setup systems and methods using dynamic link tagging and overbooking of links in multi-domain transport networks 有权
标题翻译：呼叫建立系统和方法使用多域传输网络中链路的动态链接标记和超量预订
公开(公告)号：US09172658B2
公开(公告)日：2015-10-27
申请号：US13783764
申请日：2013-03-04
申请人： Vikas Kakkar , Kapil Juneja , Anurag Prakash , Mohit Chhillar
发明人： Vikas Kakkar , Kapil Juneja , Anurag Prakash , Mohit Chhillar
IPC分类号： H04B10/032 , H04L12/911 , H04L12/715 , H04L12/913
CPC分类号： H04L47/728 , H04L45/04 , H04L47/724
摘要： Call setup methods in a multi-domain network and a multi-domain network use dynamic link tagging and/or overbooking of External Network-Network Interface (ENNI) links. Thus, improved call setup systems and methods include two approaches to improve upon the responsiveness of the network for connection setups including bandwidth reservation in optical networks using “dynamic link tags” and link overbooking in optical networks based on a greedy approach. The bandwidth reservation and the link overbooking can be utilized together or separately to improve call setup. Advantageously, the improved call setup systems and methods can provide a generic bandwidth reservation mechanism, such as in Automatically Switched Optical Network (ASON) networks, to overcome the limitation of ENNI in concurrently updating the abstract link bandwidth and thereby improving the responsiveness of the network.
摘要翻译：多域网络和多域网络中的呼叫建立方法使用外部网络网络接口（ENNI）链接的动态链接标记和/或超量预订。因此，改进的呼叫建立系统和方法包括两种方法来改进网络对连接设置的响应性，包括使用“动态链路标签”的光网络中的带宽预留和基于贪婪方法的光网络中的链接超额预订。可以一起或分开使用带宽预留和链路超量预订来改善呼叫建立。有利地，改进的呼叫建立系统和方法可以提供诸如在自动交换光网络（ASON）网络中的通用带宽预留机制，以克服ENNI同时更新抽象链路带宽的限制，从而提高网络的响应性。

8. 发明授权

US08854955B2 Mesh restoration and bandwidth allocation systems and methods for shared risk connection groups 有权
标题翻译：用于共享风险连接组的网状恢复和带宽分配系统和方法
公开(公告)号：US08854955B2
公开(公告)日：2014-10-07
申请号：US13714516
申请日：2012-12-14
申请人： Anurag Prakash , Mohit Chhillar , Pradeep Kumar , Rajagopalan Kannan
发明人： Anurag Prakash , Mohit Chhillar , Pradeep Kumar , Rajagopalan Kannan
IPC分类号： H04J1/16 , H04B10/032
CPC分类号： H04B10/032 , H04L45/28
摘要： A method, a node, and a network include mesh restoration and bandwidth allocation systems and methods for shared risk connection groups for source-based routing control planes. The mesh restoration and bandwidth allocation systems and methods utilize signaling from a node closest to a point of failure to “advise” source nodes about protect paths to be taken for a particular unidirectional or bidirectional connection in the event of mesh restoration. Specifically, the systems and methods include an ability to correlate connection information as Shared Risk Connection Groups (SRCG) to optimally utilize network bandwidth in the event of failure. The systems and methods could also be used to optimally distribute connections in a mesh network as well, trying to utilize maximum bandwidth, in distributed or centralized environments. Effectively, the systems and method distributed path computation in the network away from solely being the responsibility of source nodes.
摘要翻译：方法，节点和网络包括用于基于源的路由控制平面的共享风险连接组的网格恢复和带宽分配系统和方法。网格恢复和带宽分配系统和方法利用来自最接近故障点的节点的信令，以便在网格恢复的情况下向源节点提供关于用于特定单向或双向连接的保护路径的信息。具体来说，系统和方法包括将连接信息作为共享风险连接组（SRCG）进行关联的能力，以在发生故障时最佳地利用网络带宽。系统和方法也可用于在网状网络中优化分布连接，并尝试在分布式或集中式环境中利用最大带宽。有效地，网络中的系统和方法分布式路径计算不仅仅是源节点的责任。

9. 发明授权

US09485550B2 Systems and methods for selection of optimal routing parameters for DWDM network services in a control plane network 有权
标题翻译：用于选择控制平面网络中DWDM网络服务的最优路由参数的系统和方法
公开(公告)号：US09485550B2
公开(公告)日：2016-11-01
申请号：US14482336
申请日：2014-09-10
申请人： Mohit Chhillar , Anurag Prakash , Seemant Bisht , Hari Srinivasan
发明人： Mohit Chhillar , Anurag Prakash , Seemant Bisht , Hari Srinivasan
IPC分类号： H04Q11/00 , H04J14/02
CPC分类号： H04Q11/0003 , H04J14/0227 , H04J14/0257 , H04J14/0271 , H04L45/02 , H04L45/12 , H04L45/26 , H04L45/28 , H04L45/64 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0073
摘要： A method, in an intermediate node in a control plane network, includes receiving a setup message from an originating node, wherein the setup message is sent towards a terminating node on a computed path in the control plane network, and the setup message indicates associated Layer 0 attributes; validating the associated attributes/constraints based on locally available resources; and performing one of: forwarding the setup message on the path towards the terminating node when validation is successful; forwarding the setup message on the path towards the terminating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful, but a modification of the Layer 0 attributes/constraints is possible; and forwarding a release message on the path back to the originating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful and no modifications of the Layer 0 attributes/constraints are possible.
摘要翻译：一种在控制平面网络中的中间节点中的方法，包括从起始节点接收建立消息，其中所述建立消息被发送到所述控制平面网络中计算的路径上的终止节点，并且所述建立消息指示相关联的层 0属性; 基于本地可用资源验证相关属性/约束; 并执行以下步骤之一：当验证成功时，将路径上的建立消息转发到终止节点; 当验证不成功时，向终止节点路径转发建立消息，该更新信息指示拒绝原因和附加信息，但可以修改第0层属性/约束; 以及当所述验证不成功且不能修改所述第0层属性/约束时，将所述路径上的释放消息转发回所述始发节点，所述更新信息指示拒绝原因和附加信息。

10. 发明授权

US09236953B2 Coordination systems and methods between data control plane and photonic control in optical networks 有权
标题翻译：光网络数据控制平面与光子控制之间的协调系统与方法
公开(公告)号：US09236953B2
公开(公告)日：2016-01-12
申请号：US14247320
申请日：2014-04-08
申请人： Mohit Chhillar , Anurag Prakash , Rajagopalan Kannan , Dominic Richens , Hari Srinivasan
发明人： Mohit Chhillar , Anurag Prakash , Rajagopalan Kannan , Dominic Richens , Hari Srinivasan
IPC分类号： H04B10/00 , H04B10/70 , H04J14/02 , H04Q11/00 , H04B10/032
CPC分类号： H04B10/70 , H04B10/00 , H04B10/032 , H04J14/0295 , H04Q11/0066 , H04Q11/0071 , H04Q2011/0081 , H04Q2011/0086
摘要： A method, a system, and a network for coordination between a data control plane and photonic control in a network include operating the data control plane with photonic control messaging included therein, wherein the data control plane is configured to at least establish end-to-end paths between a plurality of network elements at Layer 1; transmitting a photonic control message in or by the data control plane responsive to a requirement for photonic layer information; processing, via the data control plane, the photonic layer information received from photonic control responsive to the photonic control message, wherein the photonic control is configured to adjust photonic hardware responsive to a change at a photonic layer; and performing an action by the data control plane considering the photonic layer information.
摘要翻译：用于网络中的数据控制平面和光子控制之间的协调的方法，系统和网络包括利用包括在其中的光子控制消息来操作数据控制平面，其中数据控制平面被配置为至少建立端到端第1层的多个网元之间的终端路径; 响应于对光子层信息的要求，在数据控制平面内或由数据控制平面传输光子控制消息; 经由数据控制平面处理响应于光子控制消息从光子控制接收的光子层信息，其中所述光子控制被配置为响应于光子层的变化来调整光子硬件; 并且考虑光子层信息由数据控制平面执行动作。

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