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1. 发明申请

US20120308224A1 Standby Restoration Signaling For Optical Networks 有权
标题翻译：光网络待机恢复信令
公开(公告)号：US20120308224A1
公开(公告)日：2012-12-06
申请号：US13558549
申请日：2012-07-26
申请人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
发明人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
IPC分类号： H04Q11/00
CPC分类号： H04J14/0246 , H04J14/0212 , H04J14/0257 , H04J14/0258 , H04J14/0268 , H04J14/0269 , H04J14/0284
摘要： Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks.
摘要翻译：描述了提供用于透明光网络的共享网格恢复的分布式恢复信令协议的系统和方法。

2. 发明授权

US08260133B2 Standby restoration signaling for optical networks 有权
标题翻译：用于光网络的待机恢复信令
公开(公告)号：US08260133B2
公开(公告)日：2012-09-04
申请号：US12584414
申请日：2009-09-04
申请人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
发明人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
IPC分类号： H04J1/16 , H04J3/14 , H04J14/00
CPC分类号： H04J14/0246 , H04J14/0212 , H04J14/0257 , H04J14/0258 , H04J14/0268 , H04J14/0269 , H04J14/0284
摘要： Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks.
摘要翻译：描述了提供用于透明光网络的共享网格恢复的分布式恢复信令协议的系统和方法。

3. 发明申请

US20100067899A1 Standby restoration signaling for optical networks 有权
标题翻译：用于光网络的待机恢复信令
公开(公告)号：US20100067899A1
公开(公告)日：2010-03-18
申请号：US12584414
申请日：2009-09-04
申请人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
发明人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
IPC分类号： H04J14/00
CPC分类号： H04J14/0246 , H04J14/0212 , H04J14/0257 , H04J14/0258 , H04J14/0268 , H04J14/0269 , H04J14/0284
摘要： Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks.
摘要翻译：描述了提供用于透明光网络的共享网格恢复的分布式恢复信令协议的系统和方法。

4. 发明授权

US08687956B2 Standby restoration signaling for optical networks 有权
标题翻译：用于光网络的待机恢复信令
公开(公告)号：US08687956B2
公开(公告)日：2014-04-01
申请号：US13558549
申请日：2012-07-26
申请人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
发明人： Guangzhi Li , Angela Lan Chiu , Robert Duncan Doverspike , John L. Strand
IPC分类号： H04Q11/00 , H04J14/02 , H04J1/16
CPC分类号： H04J14/0246 , H04J14/0212 , H04J14/0257 , H04J14/0258 , H04J14/0268 , H04J14/0269 , H04J14/0284
摘要： Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks.
摘要翻译：描述了提供用于透明光网络的共享网格恢复的分布式恢复信令协议的系统和方法。

5. 发明授权

US08150257B1 Shared mesh restoration with pre-configured standby lightpaths 有权
标题翻译：具有预配置的备用光路的共享网格恢复
公开(公告)号：US08150257B1
公开(公告)日：2012-04-03
申请号：US12214591
申请日：2008-06-20
申请人： Gagan L. Choudhury , Angela Lan Chiu , Robert Duncan Doverspike , Guangzhi Li , John L. Strand
发明人： Gagan L. Choudhury , Angela Lan Chiu , Robert Duncan Doverspike , Guangzhi Li , John L. Strand
IPC分类号： G02F1/00
CPC分类号： H04L45/125 , H04L41/0654 , H04L41/0681 , H04L41/145 , H04L45/00 , H04L45/22 , H04L45/28 , H04L47/728
摘要： Systems and methods are described for restoring wavelength services in mesh networks using pre-configured, standby lightpaths. The standby lightpaths are pre-cross-connected lightpaths that provide connectivity between switching nodes having a fiber link of degree-2 or higher. The restoration method overcomes the problem of optical impairments for long haul connections, avoids wavelength power balancing delays, provides wavelength conversion for capacity efficiency, and allows sharing of links across nonsimultaneous failures.
摘要翻译：描述了使用预配置的备用光路恢复网状网络中的波长服务的系统和方法。备用光路是预交叉连接的光路，其提供具有2度或更高的光纤链路的交换节点之间的连接。恢复方法克服了长距离连接的光学损伤问题，避免波长功率平衡延迟，为容量效率提供波长转换，并允许跨非同时故障共享链路。

6. 发明授权

US08989018B2 Method and apparatus for providing a route recommendation 有权
标题翻译：提供路线推荐的方法和装置
公开(公告)号：US08989018B2
公开(公告)日：2015-03-24
申请号：US12901767
申请日：2010-10-11
申请人： Guangzhi Li , Angela Lan Chiu , Chris Dailey , Robert Duncan Doverspike , Monica Naukam Gerhardstein , Dah-Min David Hwang , Dongmei Wang , Dahai Xu
发明人： Guangzhi Li , Angela Lan Chiu , Chris Dailey , Robert Duncan Doverspike , Monica Naukam Gerhardstein , Dah-Min David Hwang , Dongmei Wang , Dahai Xu
IPC分类号： H04L12/24 , H04J14/02 , H04L12/751 , H04L12/721
CPC分类号： H04L45/121 , H04J14/0201 , H04J14/0212 , H04J14/0217 , H04J14/0256 , H04J14/0269 , H04J14/0284 , H04J14/0286 , H04L41/12 , H04L41/22 , H04L45/02 , H04L45/12 , H04Q11/0062
摘要： A method and apparatus for providing a route recommendation are disclosed. For example, the method obtains network topology information, wherein the network topology information comprises a plurality of underlying subnetwork types for a network. The method creates a cost model for the network, and receives a request from a user for a connection to be supported by the network. The method provides the route recommendation for supporting the connection by applying the cost model.
摘要翻译：公开了一种用于提供路线推荐的方法和装置。例如，该方法获得网络拓扑信息，其中网络拓扑信息包括用于网络的多个底层子网络类型。该方法创建网络的成本模型，并从用户接收到要由网络支持的连接的请求。该方法提供了通过应用成本模型支持连接的路由建议。

7. 发明授权

US08515280B1 Physically-diverse routing in heterogeneous optical networks 有权
标题翻译：异构光网络中的物理多样化路由
公开(公告)号：US08515280B1
公开(公告)日：2013-08-20
申请号：US12966356
申请日：2010-12-13
申请人： Guangzhi Li , Angela Lan Chiu , Chris Dailey , Robert Duncan Doverspike , Monica Naukam Gerhardstein , Dongmei Wang , Dahai Xu
发明人： Guangzhi Li , Angela Lan Chiu , Chris Dailey , Robert Duncan Doverspike , Monica Naukam Gerhardstein , Dongmei Wang , Dahai Xu
IPC分类号： H04B10/20 , H04J14/00
CPC分类号： H04J14/021 , H04J14/0257 , H04J14/0268
摘要： Systems and methods are described that provide a two-step, physically-diverse optical routing. A diverse routing is formulated using Integer Linear Programming (ILP) to find feasible routes having a minimum estimated cost, and post-processing the feasible routes on an auxiliary cost graph to optimize regenerator and terminal Optical Transponder (OT) placement and wavelength assignment.
摘要翻译：描述了提供两步，物理上多样化的光路由的系统和方法。使用整数线性规划（ILP）来制定不同的路由，以找到具有最小估计成本的可行路由，并且在辅助成本图上对可行路线进行后处理，以优化再生器和终端光转发器（OT）布局和波长分配。

8. 发明授权

US07859993B1 Two-phase fast reroute with optimized traffic engineering 有权
标题翻译：两相快速重路由优化流量工程
公开(公告)号：US07859993B1
公开(公告)日：2010-12-28
申请号：US12214375
申请日：2008-06-18
申请人： Gagan L. Choudhury , Angela Lan Chiu , Robert Duncan Doverspike , Guangzhi Li
发明人： Gagan L. Choudhury , Angela Lan Chiu , Robert Duncan Doverspike , Guangzhi Li
IPC分类号： G01R31/08 , G06F11/00 , G06F15/177 , G06F15/173 , H04J3/14 , H04J14/00 , H04L12/26 , H04L12/28 , H04L12/56 , H04B10/00
CPC分类号： H04L45/125 , H04L41/0654 , H04L41/0681 , H04L41/145 , H04L45/00 , H04L45/22 , H04L45/28 , H04L47/728
摘要： Systems and methods are described for restoring IP traffic flows routed in an IP network in less than 100 ms after the IP network sustains a network failure. The systems and methods are a two-phase fast reroute that uses distributed optimized traffic engineering during backup tunnel restoration and end-to-end tunnel restoration that maximizes sharing among all independent failure scenarios and minimizes the total capacity, total cost, or a linear combination of the two. For defined failure condition scenarios, restoration traffic is routed using pre-computed backup tunnels using a constrained shortest path first method where link weights along the path are chosen dynamically and depend on available and total capacity of the link, latency, and other cost measures such as IP port costs. During the capacity allocation phase, the method reuses capacity already allocated for other independent failure scenarios as much as possible but also adds capacity, if necessary. When an actual IP network failure occurs, the backup tunnels are used to immediately restore service to affected IP network traffic flows. In parallel, end-to-end tunnels corresponding to each affected traffic flow are rerouted and once the rerouting process is complete, traffic is switched over from the old end-to-end tunnel routes (using backup tunnels) to new end-to-end tunnel routes without using backup tunnels.
摘要翻译：描述了系统和方法，用于在IP网络维持网络故障后在不到100ms内恢复在IP网络中路由的IP业务流。系统和方法是一种两阶段快速重路由，其在备份隧道恢复和端到端隧道恢复期间使用分布式优化的流量工程，使所有独立故障情形之间的共享最大化，并最大限度地减少总容量，总成本或线性组合的两个。对于定义的故障条件情况，使用预先计算的备用隧道，使用受约束的最短路径第一种方法路由恢复流量，其中沿着路径的链路权重被动态地选择，并且取决于链路的可用和总容量，等待时间和其他成本措施，作为IP端口成本。在容量分配阶段，该方法尽可能地重用已分配给其他独立故障方案的容量，但如果需要，还会增加容量。当发生实际的IP网络故障时，备份隧道用于立即将服务恢复到受影响的IP网络流量。并行地，对应于每个受影响的业务流的端到端隧道被重新路由，一旦路由过程完成，流量将从旧的端到端隧道路由（使用备用隧道）切换到新的端到端隧道，不使用备份隧道的末端隧道路由。

9. 发明授权

US08750161B1 Metropolitan IP aggregation network design tool 失效
标题翻译：大都会IP聚合网络设计工具
公开(公告)号：US08750161B1
公开(公告)日：2014-06-10
申请号：US12972651
申请日：2010-12-20
申请人： David Matthews , Promod Kumar Bhagat , Robert Duncan Doverspike , John Gregory Klincewicz , Jian Li , Guangzhi Li , David Frederick Lynch , Moshe Segal , Dongmei Wang
发明人： David Matthews , Promod Kumar Bhagat , Robert Duncan Doverspike , John Gregory Klincewicz , Jian Li , Guangzhi Li , David Frederick Lynch , Moshe Segal , Dongmei Wang
IPC分类号： H04L12/28
CPC分类号： H04W40/02 , H04L45/12 , H04L45/64
摘要： In a tool for use by network planners in designing metropolitan IP aggregation networks, several optimization methods are integrated into a tool. A k-means algorithm is used to choose access packet switch locations. A dual-k-means algorithm is used to choose the backbone switch locations. Each access packet switch is dual homed to two backbone packet switches using two diverse paths. The diverse path configuration is found using a maxflow-mincost algorithm on a modified fiber map topology. The link topology connecting the backbone packet switches to each other is designed using a heuristic that creates a skeleton network topology and then adds express links one by one, testing each link to assure reduced overall network cost. The resulting network topology is then improved upon by local search.
摘要翻译：在网络规划者用于设计城域IP聚合网络的工具中，将几种优化方法集成到工具中。 k-means算法用于选择接入分组交换机的位置。双k均值算法用于选择主干交换机的位置。每个接入分组交换机被双重归属到两个主干分组交换机，使用两个不同的路径。在修改的光纤映射拓扑上使用maxflow-mincost算法找到不同的路径配置。将骨干分组交换机连接到彼此的链路拓扑结构使用启发式设计，创建骨架网络拓扑，然后逐个添加快速链接，测试每个链路以确保降低整体网络成本。然后通过本地搜索来改进所得到的网络拓扑。

10. 发明授权

US07688720B2 Method for selecting a restoration path in a mesh network 失效
标题翻译：在网状网络中选择恢复路径的方法
公开(公告)号：US07688720B2
公开(公告)日：2010-03-30
申请号：US11154792
申请日：2005-06-16
申请人： Robert Duncan Doverspike , Charles Robert Kalmanek, Jr. , Guangzhi Li
发明人： Robert Duncan Doverspike , Charles Robert Kalmanek, Jr. , Guangzhi Li
IPC分类号： G01R31/08
CPC分类号： H04J14/0284 , H04J14/0227 , H04J14/0241 , H04J14/0295 , H04Q11/0062 , H04Q2011/0081 , H04Q2011/0088
摘要： A method of selecting a restoration path in a mesh telecommunication network is disclosed that advantageously is practical and flexible and may be pre-computed along with a service connection path during the setup of the connection. The information used to select the restoration path can be advantageously distributed among nodes in the network.
摘要翻译：公开了一种在网状电信网络中选择恢复路径的方法，其有利地是实用和灵活的，并且可以在建立连接期间与服务连接路径一起预先计算。用于选择恢复路径的信息可以有利地分布在网络中的节点之间。

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