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11.发明授权公开(公告)号：US08711719B2
公开(公告)日：2014-04-29
申请号：US13132904
申请日：2008-12-03
申请人： Giulio Bottari , Enrico Dutti , Silvia Pucci
发明人： Giulio Bottari , Enrico Dutti , Silvia Pucci
CPC分类号： H04L12/4013 , H04L12/2865 , H04L12/2867 , H04L41/0896 , H04L41/12 , H04L45/02 , H04L45/028 , H04L45/04 , H04L45/24 , H04L45/245 , H04L45/30 , Y02D50/30
摘要： A method of generating network topology parameters of a communications network domain comprising a plurality of network nodes and a plurality of interconnecting links. The method comprises: identifying network nodes configured to interface with one or more other network domains as summarized nodes; and generating network topology parameters for one or more pairs of summarized nodes. The network topology parameters are dependent on the transmission parameters of one or more identified paths between said pair of summarized nodes. At least one said path comprises at least one other network node and respective interconnecting links.
摘要翻译： 一种生成包括多个网络节点和多个互连链路的通信网络域的网络拓扑参数的方法。 该方法包括：识别被配置为与一个或多个其他网络域接口的网络节点作为汇总节点; 以及为一个或多个汇总节点对生成网络拓扑参数。 网络拓扑参数取决于所述一对汇总节点之间的一个或多个所识别的路径的传输参数。 至少一个所述路径包括至少一个其他网络节点和相应的互连链路。
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公开(公告)号：US20120287948A1
公开(公告)日：2012-11-15
申请号：US13508406
申请日：2010-01-18
申请人： Stefano Ruffini , Giulio Bottari , Manuel Nardelli
发明人： Stefano Ruffini , Giulio Bottari , Manuel Nardelli
IPC分类号： H04J3/06
CPC分类号： H04J3/0658 , H04J3/0641 , H04J3/0682
摘要： Configuring a node (410, A-I, L-O) of a synchronization network, involves determining information about synchronization sources of a plurality of synchronization trails for passing synchronization information from the synchronization source (A, L, O, PRC) to the node to provide a synchronization reference. After determining automatically (210, 230, 330, 335, 340) synchronization transmission characteristics of trails (EF, FG, GH, HM, MN, OF, FI, IH) which use packet-based communication, the trails are compared automatically (240, 370), using their source information and their synchronization transmission characteristics, for selecting which of these trails to use for providing the synchronization reference for the node (N). Compared to selections made based on source alone, using the synchronization transmission characteristics of the packet based parts can enable a better choice of trail, and can enable comparison with synchronous type trails, and so enable hybrid synchronization networks to be configured and maintained.
摘要翻译： 配置同步网络的节点（410，AI，LO）涉及确定关于用于将同步信息从同步源（A，L，O，PRC）传递到节点的多个同步轨迹的同步源的信息，以提供 同步参考。 在使用基于分组通信的路径（EF，FG，GH，HM，MN，OF，FI，IH）的自动确定（210,230,330,335,340）同步传输特性之后，路径被自动比较（240 ，370），使用其源信息及其同步传输特性，用于选择用于为节点（N）提供同步参考的这些路径中的哪些路径。 与基于源的选择相比，使用基于分组的部件的同步传输特性可以更好地选择跟踪，并且可以与同步类型跟踪进行比较，从而使得能够配置和维护混合同步网络。
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13.发明申请METHOD AND APPARATUS FOR PATH COMPUTATION ELEMENT AND ROUTING CONTROLLER COOPERATION 有权路径计算元件与路由控制器合作的方法与装置公开(公告)号：US20120163390A1
公开(公告)日：2012-06-28
申请号：US13394220
申请日：2010-08-23
申请人： Paola Iovanna , Giulio Bottari , Annikki Welin , Francesco Paolucci , Filippo Cugini , Piero Castoldi
发明人： Paola Iovanna , Giulio Bottari , Annikki Welin , Francesco Paolucci , Filippo Cugini , Piero Castoldi
IPC分类号： H04L12/56
CPC分类号： H04Q11/0062 , H04L45/00 , H04L45/10 , H04L45/121 , H04L45/123 , H04L45/42 , H04L45/62 , H04Q2011/0073
摘要： A system, method, and node for a Routing Controller (RC) to obtain from a Path Computation Element (PCE), network resource path metrics across a plurality of domains in a communication network in which each domain includes a plurality of Border Nodes (BNs). The RC sends to the PCE, a first message requesting a first path computation between each pair of BNs. The first message contains a maximum metric-value that a path computation must not exceed for a Path Computation Client (PCC) to consider the path computation acceptable. The RC then sends a second message requesting the PCE to compute a subsequent path computation for each BN pair for which the first path computation did not exceed the maximum metric-value. The second message contains a minimum metric-value that a path metric must exceed for the PCC to consider the path metric acceptable. The RC then receives the computed subsequent path computation.
摘要翻译： 路由控制器（RC）的系统，方法和节点，用于从路径计算元素（PCE）获得在通信网络中的多个域中的网络资源路径度量，其中每个域包括多个边界节点（BN） ）。 RC向PCE发送请求在每对BN之间进行第一路径计算的第一消息。 第一条消息包含一个路径计算不能超过路径计算客户端（PCC）的最大度量值，以考虑可接受的路径计算。 然后，RC然后发送请求PCE的第二消息，以计算第一路径计算未超过最大度量值的每个BN对的后续路径计算。 第二条消息包含路由度量值必须超过PCC以考虑可接受的路径度量的最小度量值。 RC然后接收计算的后续路径计算。
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14.发明申请公开(公告)号：US20080144993A1
公开(公告)日：2008-06-19
申请号：US11572467
申请日：2005-07-20
申请人： Giulio Bottari , Fabio Cavaliere
发明人： Giulio Bottari , Fabio Cavaliere
IPC分类号： G02B6/12
CPC分类号： H04B10/2935
摘要： A method for optimisation of the number and location of regenerative or non-regenerative repeaters in a WDM link made up of N spans connected in a succession of N−1 intermediate sites to form link sections separated by sites containing regenerative repeaters, comprises a step for defining the number of regenerative repeaters needed and giving them a first location. Said step comprises the phases of defining targets OSNRs (VOSNRT) as a function of the number of spans and the type of fibre used in the spans, and defining a possible section between an initial site and a final site, appraising a metric function VM for said possible section obtained as a function of the difference between the OSNR (VOSNR) at the final end of the first span of said possible section and the corresponding target OSNR (VOSNRT) given by the number of spans in said possible section. If the appraised metric function VM satisfies an established quality parameter, add to the possible section the following span in the link and again appraise the metric function for said new possible section obtained as a function of the difference between the OSNR (VOSNR) at the final end of the first span of the possible section and the corresponding target OSNR (VOSNRT) with the new number of spans in the possible section. Said steps are repeated iteratively while adding spans to the possible section until the metric function VM no longer satisfies the quality parameter and one returns at the end site preceding the last span added and positions a regenerator in said site. The procedure is repeated until the end of the new section is identified or to exhaustion of the spans of the link.
摘要翻译： 一种用于优化在连续N-1个中间站点中连接的N个跨度组成的WDM链路中的再生或非再生中继器的数量和位置的方法，以形成由包含再生中继器的站点分离的链路段，包括步骤 定义所需的再生中继器的数量并给予它们第一个位置。 所述步骤包括定义目标OSNR（VOSNRT）的阶段，其作为跨度的数量和在跨度中使用的光纤的类型的函数，并且定义初始站点和最终站点之间的可能部分，评估度量函数VM 所述可能部分是根据所述可能部分的第一跨度的最终端的OSNR（VOSNR）与由所述可能部分中的跨度数给出的相应目标OSNR（VOSNRT）之间的差异而获得的。 如果评估度量函数VM满足已建立的质量参数，则在链路中添加以下跨度的可能部分，并再次评估所获得的所述新可能部分的度量函数作为最终的OSNR（VOSNR）之间的差异的函数 可能部分的第一个跨度的结束和相应的目标OSNR（VOSNRT）与可能部分中的新的跨度数。 所述步骤重复地重复，同时将跨度添加到可能的部分，直到度量函数VM不再满足质量参数，并且一个在最后一个跨度添加之前的终点站点返回，并且将再生器定位在所述站点中。 重复该过程，直到新部分的结尾被识别或链接的跨度耗尽。
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公开(公告)号：US10038621B2
公开(公告)日：2018-07-31
申请号：US14386151
申请日：2012-04-05
IPC分类号： H04L12/751 , H04L12/715 , H04L12/721 , H04L12/717 , H04L12/723 , H04L12/24
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.
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公开(公告)号：US09838217B2
公开(公告)日：2017-12-05
申请号：US14408794
申请日：2012-07-23
IPC分类号： H04L12/26 , H04L12/46 , H04L12/939
CPC分类号： H04L12/4633 , H04L49/555
摘要： A Common Public Radio Interface (CPRI) link involves using a protocol stack having a CPRI layer and an emulation layer to emulate a point to point link, to enable the CPRI link to operate over a packet switched network. The emulation layer can be a pseudowire emulation which encapsulates multiple CPRI frames in a packet with overhead. A multiplexing layer such as Internet Protocol (IP) or Multiprotocol Label Switching (MPLS) can be used, for sending the packet over an Ethernet network. The usual need for a point to point infrastructure for the CPRI link can be avoided and the CPRI link can be implemented over more complex but usually cheaper packet networks, thus reducing costs or enabling more widespread application over existing packet networks. This applies whether the packet network is dedicated to the CPRI link, or shared with other packets. It can be useful for distributed radio base stations.
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公开(公告)号：US09647784B2
公开(公告)日：2017-05-09
申请号：US13508406
申请日：2010-01-18
申请人： Stefano Ruffini , Giulio Bottari , Manuel Nardelli
发明人： Stefano Ruffini , Giulio Bottari , Manuel Nardelli
CPC分类号： H04J3/0658 , H04J3/0641 , H04J3/0682
摘要： Configuring a node (410, A-I, L-O) of a synchronization network, involves determining information about synchronization sources of a plurality of synchronization trails for passing synchronization information from the synchronization source (A, L, O, PRC) to the node to provide a synchronization reference. After determining automatically (210, 230, 330, 335, 340) synchronization transmission characteristics of trails (EF, FG, GH, HM, MN, OF, FI, IH) which use packet-based communication, the trails are compared automatically (240, 370), using their source information and their synchronization transmission characteristics, for selecting which of these trails to use for providing the synchronization reference for the node (N). Compared to selections made based on source alone, using the synchronization transmission characteristics of the packet based parts can enable a better choice of trail, and can enable comparison with synchronous type trails, and so enable hybrid synchronization networks to be configured and maintained.
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公开(公告)号：US09462358B2
公开(公告)日：2016-10-04
申请号：US14239308
申请日：2011-10-12
CPC分类号： H04Q11/0005 , H04J14/02 , H04J14/0212 , H04J14/0284 , H04J14/0294 , H04Q2011/0016 , H04Q2011/0037
摘要： An optical network is configured to provide an optical reroute over a backup path (2139) during a failure in a signal path (2133). The network comprises a first node (B). A second node (C) is coupled to receive a signal from the first node (B) via the signal path (2133), and a backup signal via the backup path (2139). The network is adapted to transmit a signal and a corresponding backup signal from the first node to the second node even when there is no failure in the signal path (2133), wherein the backup signal is blocked at the second node (C) when there is no failure in the signal path (2133). Embodiments of the invention utilize the broadcast and blocking functionalities of a wavelength selective switch (WSS) device. Such WSS devices enable, in the case of a failure of a link, the fast switchover of optical traffic onto local detours within a reduced time.
摘要翻译： 光网络被配置为在信号路径（2133）中的故障期间在备用路径（2139）上提供光学重新路由。 网络包括第一节点（B）。 第二节点（C）被耦合以经由信号路径（2133）从第一节点（B）接收信号，以及经由备用路径（2139）的备用信号。 即使在信号路径（2133）中没有故障的情况下，该网络适于将信号和对应的备份信号从第一节点发送到第二节点，其中当第二节点（C））在第二节点（C）处阻止备份信号 在信号路径中没有故障（2133）。 本发明的实施例利用波长选择开关（WSS）装置的广播和阻塞功能。 在链路故障的情况下，这样的WSS设备能够在减少的时间内快速地切换光流量到本地绕行。
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公开(公告)号：US20150215200A1
公开(公告)日：2015-07-30
申请号：US14394140
申请日：2012-04-13
IPC分类号： H04L12/703 , H04L12/24 , H04L12/717 , H04L12/723 , H04L12/707
CPC分类号： H04L45/28 , H04L41/0663 , H04L41/0681 , H04L45/22 , H04L45/42 , H04L45/50 , H04Q3/0079
摘要： Recovery from failure of a working path for communications traffic in a connection-oriented network, where the working path has a preplanned recovery path, involves initiating recovery by requesting computation of a new recovery path for the communications traffic to avoid the failure. If the recovery is not successful within a time limit, recovery is carried out using the preplanned recovery path. Determining if the recovery is not successful and initiating the recovery using the preplanned recovery path can be controlled by an ingress node of the working path. By trying to compute a new recovery path first, network resources can be used more efficiently, as the new recovery path is likely to reuse most of the working path, since it is computed knowing the location of the fault.
摘要翻译： 通过面向连接的网络（其中工作路径具有预先计划的恢复路径）的通信流量的工作路径的故障恢复涉及通过请求计算通信业务的新的恢复路径来避免故障来启动恢复。 如果在一段时间内恢复不成功，则使用预先计划的恢复路径进行恢复。 确定恢复是否成功，并使用预先计划的恢复路径启动恢复可以由工作路径的入口节点控制。 通过尝试首先计算新的恢复路径，可以更有效地使用网络资源，因为新的恢复路径很可能重用大部分工作路径，因为它是计算知道故障位置的。
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公开(公告)号：US08873948B2
公开(公告)日：2014-10-28
申请号：US13095053
申请日：2011-04-27
CPC分类号： H04J14/0227 , H04J14/0257 , H04J14/0267 , H04J14/0268 , H04J14/0269 , H04J14/0271
摘要： A border node of an optical network receives optical channel traffic parameter(s) associated with an optical channel from an optical channel originator external to the optical network. The received parameters are used to determine the suitability of at least one optical path within the optical network for an externally originating optical channel. If a suitable optical path is determined, an optical channel availability message indicating the availability at the border node of an optical path within the optical network for the optical channel is sent to the optical channel originator. The optical channel originator determines an available optical channel status of the optical channel from the received optical channel availability message for the optical channel.
摘要翻译： 光网络的边界节点从光网络外部的光信道发起方接收与光信道相关联的光信道业务参数。 所接收的参数用于确定光网络内至少一个光路对于外部发起的光信道的适用性。 如果确定了合适的光路，则向光信道发起者发送指示在光信道的光网络内的光路的边界节点的可用性的光信道可用性消息。 光信道发起者根据接收到的光信道的光信道可用性消息确定光信道的可用光信道状态。
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