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1. 发明申请

US20140016925A1 RESIZING A PATH IN A CONNECTION-ORIENTED NETWORK 审中-公开
标题翻译：在面向连接的网络中调整路径
公开(公告)号：US20140016925A1
公开(公告)日：2014-01-16
申请号：US13985567
申请日：2011-04-18
申请人： Daniele Ceccarelli , Diego Caviglia , Sergio Lanzone
发明人： Daniele Ceccarelli , Diego Caviglia , Sergio Lanzone
IPC分类号： H04Q11/00
CPC分类号： H04Q11/0062 , H04J3/1652 , H04J14/0267 , H04J14/0269 , H04J14/0273 , H04J2203/0058 , H04J2203/0082 , H04L45/02 , H04L45/125 , H04L45/62 , H04L47/74
摘要： An existing path in a connection-oriented network requires resizing from a first size to a second size. Nodes exchange control plane signalling with other nodes which advertises available resources on links between nodes. A node on the existing path receives a request to establish a path capable of being resized to the second size. The node determines, using information acquired by the control plane signalling with other nodes, a new path between nodes capable of supporting the second size. The node signals to establish the new path and switches traffic from the existing path to the new path. The node causes the new path to be resized to the second size. Nodes exchange control plane signalling with other nodes which advertises whether a link supports resizing, such as OSPF-TE advertisements.
摘要翻译：面向连接的网络中的现有路径需要从第一个大小调整为第二个大小。节点与其他节点交换控制平面信令，在节点之间的链路上通告可用资源。现有路径上的节点接收到建立能够被调整到第二大小的路径的请求。节点使用由其他节点控制平面信令获取的信息确定能够支持第二大小的节点之间的新路径。节点发出信号以建立新路径，并将流量从现有路径切换到新路径。该节点使新路径被调整为第二个大小。节点与其他节点交换控制平面信令，通告链路是否支持调整大小，如OSPF-TE广播。

2. 发明申请

US20150163125A1 APPARATUS AND METHOD FOR COMPUTING END-TO-END PATHS THROUGH A NETWORK COMPRISING A PLURALITY OF NETWORK DOMAINS 审中-公开
标题翻译：通过包含多个网络域的网络计算端到端的设备和方法
公开(公告)号：US20150163125A1
公开(公告)日：2015-06-11
申请号：US14386151
申请日：2012-04-05
申请人： Diego Caviglia , Giulio Bottari , Daniele Ceccarelli
发明人： Diego Caviglia , Giulio Bottari , Daniele Ceccarelli
IPC分类号： H04L12/751 , H04L12/721 , H04L12/723
CPC分类号： H04L45/02 , H04L41/12 , H04L45/04 , H04L45/26 , H04L45/42 , H04L45/44 , H04L45/50
摘要： A network architecture is provided for enabling end-to-end paths to be computed across a plurality of network domains. The network architecture comprises a plurality of child path computation elements associated with a plurality of respective network domains, each child path computation element adapted to compute a path segment within its respective network domain. A parent path computation element adapted to compute an end-to-end path across a plurality of network domains in conjunction with the plurality of respective child path computation elements.
摘要翻译：提供了一种网络架构，用于跨多个网络域计算端到端路径。网络架构包括与多个相应网络域相关联的多个子路径计算元件，每个子路径计算元件适于计算其各自网络域内的路径段。父路径计算元件，适于结合多个相应的子路径计算元件计算跨多个网络域的端到端路径。

3. 发明申请

US20140328159A1 Recovery of Split Architecture Control Plane 审中-公开
标题翻译：拆分架构控制平面的恢复
公开(公告)号：US20140328159A1
公开(公告)日：2014-11-06
申请号：US14361368
申请日：2011-11-29
申请人： Paolo Rebella , Diego Caviglia , Daniele Ceccarelli
发明人： Paolo Rebella , Diego Caviglia , Daniele Ceccarelli
IPC分类号： H04L12/24
CPC分类号： H04L41/0672 , H04L41/0213 , H04L41/042 , H04L41/0654 , H04L41/0873 , H04L41/0893 , H04L45/28
摘要： A method of operating a control plane having a centralised network management system (10), control domain servers (20) and a plurality of forwarding elements (30), for controlling respective network entities (L2), and grouped into control domains (21, 22, 23). Each domain has a control domain server. Automatic checking for inconsistencies (110, 115, 210, 310, 320, 450) between the records held at the different parts of the control plane, involves comparing checklists of the records of the circuits stored at the different parts of the control plane. If an inconsistency is found, there is automatic updating (120, 220, 230, 460) of the records using a copy sent from another of the parts of the control plane. The checklists can avoid the need to forwarding entire copies.
摘要翻译：一种操作具有集中式网络管理系统（10），控制域服务器（20）和多个转发元件（30）的控制平面的方法，用于控制各个网络实体（L2），并分组成控制域 22,23）。每个域都有一个控制域服务器。在控制平面的不同部分之间记录的不一致（110,115,210,310,320,450）的自动检查涉及比较存储在控制平面的不同部分的电路记录的清单。如果发现不一致，则使用从控制平面的其他部分发送的副本自动更新记录（120,220,230,460）。检查单可以避免转发整个副本的需要。

4. 发明授权

US08850014B2 Handling failure of request message during set up of label switched path 有权
标题翻译：在设置标签交换路径时处理请求消息的故障
公开(公告)号：US08850014B2
公开(公告)日：2014-09-30
申请号：US12994318
申请日：2010-06-14
申请人： Daniele Ceccarelli , Diego Caviglia , Francesco Fondelli
发明人： Daniele Ceccarelli , Diego Caviglia , Francesco Fondelli
IPC分类号： G06F15/173 , H04L29/06 , H04L12/913 , H04L12/723 , H04L12/701 , H04L12/54 , H04L12/911
CPC分类号： H04L47/724 , H04L12/5691 , H04L45/00 , H04L45/50 , H04L47/825 , H04L69/14
摘要： Setting up a label switched path (LSP) for traffic between nodes of a network, involves sending a request message requesting reservation of resources for the requested LSP, from an ingress node (10) via intermediate nodes (40) and returning an acknowledgement message to an upstream node along the path. Absence of an acknowledgement from the downstream node, that the request message was received, is detected. Whether the given node should react to the detected absence can be determined from an indication (R) in the request message. Thus other nodes can react more quickly to take remedial action, to reroute or to remove the resource reservations without a long wait for a time out or a refresh message from the waiting ingress node, to enable more efficient use of the resources.
摘要翻译：为网络节点之间的业务建立标签交换路径（LSP），涉及从入节点（10）经由中间节点（40）发送请求预留所请求的LSP的资源的请求消息，并将确认消息返回给沿着路径的上游节点。检测到从下游节点没有接收到请求消息的确认。是否可以根据请求消息中的指示（R）确定给定节点对检测到的不存在的响应。因此，其他节点可以更快地作出反应，采取补救措施，重新路由或删除资源预留，而不需要等待超时或等待的入口节点的刷新消息，才能更有效地利用资源。

5. 发明授权

US09450778B2 P2MP traffic protection in MPLS-TP ring topology 有权
标题翻译： MPLS-TP环形拓扑中的P2MP流量保护
公开(公告)号：US09450778B2
公开(公告)日：2016-09-20
申请号：US12512781
申请日：2009-07-30
申请人： Daniele Ceccarelli , Francesco Fondelli , Diego Caviglia
发明人： Daniele Ceccarelli , Francesco Fondelli , Diego Caviglia
IPC分类号： G01R31/08 , H04L12/437 , H04L12/707 , H04L12/703 , H04L12/723
CPC分类号： H04L12/437 , H04L45/22 , H04L45/28 , H04L45/50 , H04L45/507
摘要： In a connection-oriented network a point-to-multipoint working path is established between a source node and a plurality of destination nodes using a number of working path intermediate nodes. A point-to-multipoint protection path is established for possible points of failure in the working path. Each protection path connects a first working path intermediate node upstream of a point of failure and destination nodes of the working path downstream of the first working path intermediate node. The point-to-multipoint protection path only connects to destination nodes of the working path and working path intermediate nodes which must be transited to reach the destination nodes of the working path.
摘要翻译：在面向连接的网络中，使用多个工作路径中间节点在源节点和多个目的地节点之间建立点对多点工作路径。为工作路径中的可能故障点建立点对多点保护路径。每个保护路径将故障点上游的第一工作路径中间节点与第一工作路径中间节点下游的工作路径的目标节点相连。点到多点保护路径仅连接到工作路径的目标节点和工作路径中间节点，必须转移到中间节点以到达工作路径的目标节点。

6. 发明授权

US09071500B2 Ownership transfer of a label switched path 有权
标题翻译：标签交换路径的所有权转让
公开(公告)号：US09071500B2
公开(公告)日：2015-06-30
申请号：US13375203
申请日：2009-05-29
申请人： Francesco Fondelli , Diego Caviglia , Daniele Ceccarelli
发明人： Francesco Fondelli , Diego Caviglia , Daniele Ceccarelli
IPC分类号： H04L12/24 , H04L12/701 , H04L12/723
CPC分类号： H04L45/00 , H04L41/0213 , H04L41/0816 , H04L45/50
摘要： Control of a label switched path established in a network is transferred between a management plane and a control plane of the network. A node (e.g., node C) receives a message indicating a change in control of the label switched path, the message identifying the label switched path by a cross-connection identifier corresponding to an entry in the control data stored at the node which identifies data plane ingress and egress segments cross-connected at the node. Control data at the node is updated based on the identified label switched path. The message includes a list of cross-connection identifiers for nodes (e.g., nodes C, E, and F) along the label switched path. The cross-connection identifier can be an mplsXCIndex.
摘要翻译：在网络中建立的标签交换路径的控制在网络的管理平面和控制平面之间传送。节点（例如，节点C）接收指示标签交换路径的控制变化的消息，该消息通过对应于存储在标识数据的节点处的控制数据中的条目的交叉连接标识符来识别标签交换路径平面入口和出口段在节点处交叉连接。基于识别的标签交换路径来更新节点处的控制数据。消息包括沿着标签交换路径的节点（例如，节点C，E和F）的交叉连接标识符的列表。交叉连接标识符可以是mplsXCIndex。

7. 发明申请

US20120148240A1 RESERVING A PATH USING GMPLS EXTENSIONS FOR ODU SIGNALLING 审中-公开
标题翻译：使用GMPLS扩展保留ODU信号的路径
公开(公告)号：US20120148240A1
公开(公告)日：2012-06-14
申请号：US13321042
申请日：2010-01-04
申请人： Daniele Ceccarelli , Diego Caviglia , Francesco Fondelli
发明人： Daniele Ceccarelli , Diego Caviglia , Francesco Fondelli
IPC分类号： H04J14/00
CPC分类号： H04Q11/0062 , H04J3/1652 , H04L45/50 , H04L47/724 , H04L47/825 , H04Q2011/0073 , H04Q2011/0084 , H04Q2011/0088
摘要： A method of requesting reservation of a label switched path (LSP) for traffic of a type compatible with ITU-T G709 amendment 3, in an optical transport network by sending a RSVP-TE path message for the reservation of the requested LSP from an ingress node of the requested path, via intermediate nodes along the path to an egress node, and sending a RSVP-TE resv message from the egress node, to cause the nodes to reserve resources for the requested path. The path message has a signal type field having values assigned to indicate traffic types specified in G.709 amendment 3 beyond those specified by G.709 pre amendment 3, without reuse of values specified by G.709 pre amendment 3. Since the nodes along the path can still distinguish in the signal type field any values of the signal type field specified by G.709 pre amendment 3, new nodes can still work with legacy messages.
摘要翻译：一种在光传输网络中请求预留与ITU-T G709修订版3兼容的类型的业务的标签交换路径（LSP）的方法，通过从入口发送用于预留所请求的LSP的RSVP-TE路径消息通过到出口节点的路径的中间节点，并且从出口节点发送RSVP-TE RESV消息，以使节点为所请求的路径预留资源，所请求路径的节点。路径消息具有信号类型字段，其具有被指定用于指示G.709修正3中指定的G.709修正3以外规定的业务类型的值，而不重用由G.709预修改3指定的值。由于节点该路径仍然可以在信号类型字段中区分由G.709预修改3指定的信号类型字段的任何值，新节点仍然可以使用旧的消息。

8. 发明申请

US20120042077A1 HANDLING FAILURE OF REQUEST MESSAGE DURING SET UP OF LABEL SWITCHED PATH 有权
标题翻译：在设置标签交换路径时处理请求消息的故障
公开(公告)号：US20120042077A1
公开(公告)日：2012-02-16
申请号：US12994318
申请日：2010-06-14
申请人： Daniele Ceccarelli , Diego Caviglia
发明人： Daniele Ceccarelli , Diego Caviglia
IPC分类号： G06F15/173
CPC分类号： H04L47/724 , H04L12/5691 , H04L45/00 , H04L45/50 , H04L47/825 , H04L69/14
摘要： Setting up a label switched path (LSP) for traffic between nodes of a network, involves sending a request message requesting reservation of resources for the requested LSP, from an ingress node (10) via intermediate nodes (40) and returning an acknowledgement message to an upstream node along the path. Absence of an acknowledgement from the downstream node, that the request message was received, is detected. Whether the given node should react to the detected absence can be determined from an indication (R) in the request message. Thus other nodes can react more quickly to take remedial action, to reroute or to remove the resource reservations without a long wait for a time out or a refresh message from the waiting ingress node, to enable more efficient use of the resources.
摘要翻译：为网络节点之间的业务建立标签交换路径（LSP），涉及从入节点（10）经由中间节点（40）发送请求预留所请求的LSP的资源的请求消息，并将确认消息返回给沿着路径的上游节点。检测到从下游节点没有接收到请求消息的确认。是否可以根据请求消息中的指示（R）确定给定节点对检测到的不存在的响应。因此，其他节点可以更快地作出反应，采取补救措施，重新路由或删除资源预留，而不需要等待超时或等待的入口节点的刷新消息，才能更有效地利用资源。

9. 发明申请

US20150244453A1 WSON RESTORATION 有权
标题翻译： WSON恢复
公开(公告)号：US20150244453A1
公开(公告)日：2015-08-27
申请号：US14344973
申请日：2011-10-12
申请人： Giulio Bottari , Diego Caviglia , Daniele Ceccarelli
发明人： Giulio Bottari , Diego Caviglia , Daniele Ceccarelli
IPC分类号： H04B10/032 , H04Q11/00 , H04J14/02 , H04B10/2575
CPC分类号： H04B10/032 , H04B10/2575 , H04J14/00 , H04J14/0209 , H04J14/0212 , H04J14/0217 , H04J14/0257 , H04J14/0267 , H04J14/0268 , H04J14/0271 , H04J14/0284 , H04Q11/0005 , H04Q2011/0043
摘要： Dynamic restoration involves routing and bandwidth assignment of an unplanned restoration path in a wavelength switched optical network (20), having regeneration nodes (60), nodes each having a ROADM (62) having drop paths and add paths. An electrical switch (68) provides configurable regeneration capacity by coupling selected drop paths to selected add paths. Some of the configurable regeneration capacity is kept for unplanned restoration paths. A PCE determines (120) routing and bandwidth assignments for an unplanned restoration path for the traffic flow to avoid a fault, and sends (130) configuration messages to the nodes to set up the unplanned restoration path dynamically and to configure the electrical switch to provide regeneration on the path. Keeping some reconfigurable regeneration capacity enables much longer unplanned paths to be found to avoid faults, and enables wavelength conversion if needed. Thus the reliability of finding at least one path avoiding the fault can be increased.
摘要翻译：动态恢复涉及在具有再生节点（60）的波长交换光网络（20）中的非计划恢复路径的路由和带宽分配，每个节点具有具有丢弃路径和添加路径的ROADM（62）。电开关（68）通过将所选择的放置路径耦合到所选择的附加路径来提供可配置的再生能力。一些可配置的再生能力被保留用于非计划的恢复路径。 PCE确定（120）用于业务流的非计划恢复路径的路由和带宽分配以避免故障，并且向节点发送（130）配置消息以动态地建立非计划恢复路径并且配置电开关以提供在路上再生。保持一些可重新配置的再生能力可以实现更长的非计划路径，以避免故障，并在需要时实现波长转换。因此，可以增加找到至少一个避免故障的路径的可靠性。

10. 发明申请

US20150071057A1 SEGMENT RECOVERY 审中-公开
标题翻译：部分恢复
公开(公告)号：US20150071057A1
公开(公告)日：2015-03-12
申请号：US13996819
申请日：2011-04-18
申请人： Daniele Ceccarelli , Diego Caviglia , Paolo Rebella
发明人： Daniele Ceccarelli , Diego Caviglia , Paolo Rebella
IPC分类号： H04L12/24 , H04L12/703
CPC分类号： H04L41/0668 , H04L45/22 , H04L45/28 , H04L45/50
摘要： In a communications network, a recovery segment is used to reroute a recoverable part of a path set up along an original route along links between nodes. When a defect is detected in the original route of the path, but is undetectable by nodes within the recoverable part, a reroute message is sent (5) from outside the recoverable part to an end node (N2,N4) of the recoverable part. This prompts the rerouting of the recoverable part over the recovery segment. Thus segment recovery becomes possible for these defects which cannot be detected at nodes in the segment. This extends the applicability of benefits of segment recovery such as reduced resources devoted to recovery, and flexibility to choose which parts of paths to protect. The end node can send a notify message beforehand, to request (3) notification of the defect as the reroute message.
摘要翻译：在通信网络中，恢复段用于沿着沿着节点之间的链路沿原始路由设置的路径的可恢复部分重新路由。当在路径的原始路由中检测到缺陷，但是可恢复部分内的节点不能检测到缺陷时，从可恢复部分的外部向可恢复部分的末端节点（N2，N4）发送重新路由消息（5）。这将提示可恢复部分通过恢复段重新路由。因此，对于在段中的节点处不能检测到的这些缺陷，段恢复成为可能。这扩展了部分恢复的好处的适用性，例如减少用于恢复的资源，以及灵活选择要保护的路径的哪些部分。结束节点可以预先发送通知消息，以请求（3）将缺陷的通知作为重新路由消息。

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