公开(公告)号：US20150244493A1

公开(公告)日：2015-08-27

申请号：US14382299

申请日：2012-03-22

申请人： Filippo Cugini ,  Giulio Bottari ,  Gianmarco Bruno ,  Piero Castoldi ,  Paola Iovanna ,  Nicola Sambo

发明人： Filippo Cugini ,  Giulio Bottari ,  Gianmarco Bruno ,  Piero Castoldi ,  Paola Iovanna ,  Nicola Sambo

IPC分类号： H04J14/02

CPC分类号： H04J14/0227 ,  H04J14/02 ,  H04J14/0224 ,  H04J14/0254 ,  H04J14/0257 ,  H04J14/026 ,  H04J14/0267

摘要： A method of changing the spectral position of a lightpath between a source node and a destination node of an optical network. The optical network uses a flexible grid for spectral allocation and the lightpath has been allocated first spectral resources at a first spectral position. The method comprises, at the source node, reserving additional spectral resources for the lightpath which are contiguous in frequency with the first spectral resources. The method comprises re-tuning a light source at the source node such that the lightpath moves in frequency from using the first spectral resources at the first spectral position to using second spectral resources at a second spectral position, wherein the second spectral resources comprise at least some of the additional spectral resources. The method comprises releasing at least some of the first spectral resources. The source node continues to send traffic over the lightpath during the re-tuning.

摘要翻译： 一种在光网络的源节点和目的地节点之间改变光路的光谱位置的方法。 光网络使用灵活的网格进行光谱分配，并且光路已经在第一光谱位置分配了第一光谱资源。 该方法包括在源节点处为与第一光谱资源频率相邻的光路预留附加光谱资源。 该方法包括在源节点处重新调谐光源，使得光路在频率上从使用第一光谱位置处的第一光谱资源移动到在第二光谱位置处使用第二光谱资源，其中第二光谱资源至少包括 一些额外的频谱资源。 该方法包括释放至少一些第一光谱资源。 在重新调谐期间，源节点继续在光路上发送流量。

公开(公告)号：US09100730B2

公开(公告)日：2015-08-04

申请号：US13825017

申请日：2010-10-15

申请人： Nicola Sambo ,  Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna

发明人： Nicola Sambo ,  Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna

IPC分类号： H04J14/00 ,  H04Q11/00 ,  H04J14/02

CPC分类号： H04Q11/0062 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/026 ,  H04J14/0267 ,  H04J14/0269 ,  H04Q2011/0077 ,  H04Q2011/0088

摘要： An optical transmission network comprises nodes which support a plurality of different wavelength channels and support at least a first bitrate traffic type and the second bitrate traffic type on respective wavelength channels. A connection of the second bitrate traffic type is established on an available wavelength, if the wavelength offers an acceptable quality of transmission using a first quality of transmission calculation. Alternatively, a connection of the second bitrate traffic type is established on a wavelength which is spaced, by a guard band, from wavelengths used for connections of the first bitrate traffic type, if the wavelength offers an acceptable quality of transmission using a second quality of transmission calculation. The second quality of transmission calculation is less stringent than the first quality of transmission calculation, and can ignore the effects of interference due to cross-phase modulation. The guard band is a wavelength spacing at which the interference between a connection of the first bitrate traffic type and a connection of the second bitrate traffic type is less than a predetermined amount.

摘要翻译： 光传输网络包括支持多个不同波长信道并且在相应波长信道上支持至少第一比特率业务类型和第二比特流量类型的节点。 如果波长使用第一传输质量计算提供可接受的传输质量，则在可用波长上建立第二比特流量类型的连接。 或者，如果波长使用第二比特率业务类型的连接的波长提供可接受的传输质量，则以由保护频带隔开的波长建立第二比特流量类型的连接， 传输计算。 传输计算的第二种质量不如第一传输质量计算严格，可以忽略由于交叉相位调制引起的干扰的影响。 保护频带是第一比特流量类型的连接与第二比特流量类型的连接之间的干扰小于预定量的波长间隔。

公开(公告)号：US20150215688A1

公开(公告)日：2015-07-30

申请号：US14417550

申请日：2012-08-16

申请人： Nicola Sambo ,  Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna

发明人： Nicola Sambo ,  Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna

IPC分类号： H04Q11/00 ,  H04J14/02

CPC分类号： H04Q11/0062 ,  H04J14/0212 ,  H04J14/0257 ,  H04J14/0261 ,  H04J14/0267 ,  H04J14/0298 ,  H04L27/2697 ,  H04L45/62 ,  H04Q2011/0086 ,  H04Q2011/0088

摘要： In an optical communications network using bandwidth variable wavelength switching, routing and spectrum assignment for a traffic request for x sub-carriers of a super-channel, involves checking for an existing super-channel having sufficient potential sub-carriers not currently active. If not found, then possible paths for a new super-channel are identified and a path is selected and sub-carriers assigned. By trying first to use inactive potential sub-carriers of an existing super-channel, fewer super channels overall are needed, and thus fewer super transponders are needed. This can reduce blocking probabilities and can reduce capital costs. The search for possible paths can try to avoid or reduce overlap with spectrum of existing super channels, or compare possible paths by weighting according to amounts of overlap.

摘要翻译： 在使用带宽可变波长切换的光通信网络中，对于超级信道的x个子载波的业务请求的路由和频谱分配涉及检查具有当前没有活动的足够的潜在子载波的现有超级信道。 如果没有找到，则识别新的超级信道的可能路径，并且选择路径并分配子载波。 首先尝试使用现有超级频道的无效潜在子载波，需要更少的超级频道，因此需要更少的超级应答器。 这可以减少阻塞概率，并可以降低资本成本。 搜索可能的路径可以尝试避免或减少与现有超级频道的频谱重叠，或者通过根据重叠量加权来比较可能的路径。

公开(公告)号：US20150139652A1

公开(公告)日：2015-05-21

申请号：US14345020

申请日：2011-12-07

申请人： Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna ,  Nicola Sambo

发明人： Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna ,  Nicola Sambo

IPC分类号： H04J14/02

CPC分类号： H04J14/023 ,  H04J14/0256 ,  H04J14/0257 ,  H04J14/0258

摘要： Slots (311) for transmission of data of a particular transmission type over an optical network are allocated by selecting a first available slot (313—2) at an ordinal position corresponding to a multiple of n and allocating the selected first available slot and the next n−1 consecutive slots (313—4, 313—5) from the selected first available slot (313—3), if all n-1 consecutive slots (313—4, 313—5) are available, for transmission of data of the particular transmission type. The data is transmitted over an optical network comprising a plurality of nodes (305, 327) interconnected by optical sections (301, 309, 329, 331) the nodes (305, 327) supporting a plurality of transmission types, wherein transmission of data of the particular transmission type requires a predetermined number n of consecutive slots. Alternatively the slots may be divided in groups (333, 335, 337) and slots are allocated to a group in which all slots are available.

摘要翻译： 通过在对应于n的倍数的顺序位置选择第一可用时隙（313-2）来分配用于通过光网络传输特定传输类型的数据的时隙（311），并且分配所选择的第一可用时隙和下一个 如果所有n-1个连续时隙（313-4,313-5）可用，则从所选择的第一可用时隙（313-3）的n-1个连续时隙（313-4,313-5），用于传输 特定的传输类型。 数据通过包括多个节点（305,327）的光网络传输，所述多个节点（305,327）由支持多个传输类型的节点（305,327）的光学部分（301,309,329,331）互连，其中传输数据 特定传输类型需要预定数量的n个连续时隙。 或者，时隙可以被分组（333,335,337），并且时隙被分配给所有时隙都可用的组。

公开(公告)号：US08934768B2

公开(公告)日：2015-01-13

申请号：US13699799

申请日：2010-06-16

申请人： Giulio Bottari ,  Diego Caviglia ,  Daniele Ceccarelli

发明人： Giulio Bottari ,  Diego Caviglia ,  Daniele Ceccarelli

IPC分类号： H04J14/00 ,  H04B10/00 ,  H04B10/27 ,  H04J14/02

CPC分类号： H04B10/27 ,  H04J14/02

摘要： A method of configuring a path between an ingress node and an egress node in an optical communications network, the path comprising a first hop and a subsequent hop. The method includes: a) selecting a candidate hop for the first hop of the path; b) obtaining a value of a signal feasibility parameter for the candidate hop; c) determining whether said value lies within an acceptable value range and if one is, accepting said candidate hop for the first hop of the path, and if one is not, repeating steps a. to c.; d) selecting a candidate hop for the subsequent hop of path; e) obtaining a value of a signal feasibility parameter for a combined path comprising the first hop and the candidate hop for the subsequent hop of the path; f) determining whether said value lies within an acceptable value range, if one is, acceptable value range accepting said candidate hop for the subsequent hop of the path, and if one is not, repeating steps d. and e.; and g) generating and transmitting a control signal for configuring the path. Each step of obtaining a value of a signal feasibility parameter comprises checking whether a measured value of the signal feasibility parameter is available, and if one is, retrieving said measured value and if one is not, calculating an estimated value of the signal feasibility parameter.

摘要翻译： 一种在光通信网络中配置入口节点和出口节点之间的路径的方法，所述路径包括第一跳和后续跳。 该方法包括：a）选择路径第一跳的候选跳; b）获得候选跳的信号可行性参数的值; c）确定所述值是否在可接受的值范围内，如果是，则接受所述路径的第一跳的所述候选跳，如果不是，则重复步骤a。 到C. d）为随后的路径跳跃选择候选跳; e）获得用于组合路径的信号可行性参数的值，所述组合路径包括所述路径的后续跳跃的所述第一跳​​和候选跳; f）确定所述值是否在可接受的值范围内，如果是接受所述路径的后续跳跃的所述候选跳跃的可接受值范围，并且如果不是，则重复步骤d。 和e。 以及g）生成和发送用于配置路径的控制信号。 获取信号可行性参数的值的每个步骤包括检查信号可行性参数的测量值是否可用，并且如果是，检索所述测量值，如果不是，则计算信号可行性参数的估计值。

公开(公告)号：US20140093246A1

公开(公告)日：2014-04-03

申请号：US13983058

申请日：2011-03-21

申请人： Nicola Sambo ,  Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna

发明人： Nicola Sambo ,  Giulio Bottari ,  Piero Castoldi ,  Filippo Cugini ,  Paola Iovanna

IPC分类号： H04J14/02

CPC分类号： H04J14/0201 ,  H04J14/021 ,  H04J14/0227 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267

摘要： A method of configuring an optical path, comprising: selecting a path from a first to a second node in an optical communications network; identifying each wavelength that may be used continuously across the path and selecting a transmission wavelength for the optical path one of the identified wavelengths for which: a fixed wavelength direction-bound add/drop transponder add operable at said wavelength is available at each node; if that first requirement is not met, a fixed wavelength direction-bound add/drop transponder or a fixed wavelength directionless add/drop transponder operable at said wavelength is available at each node; and if that second requirement is not met, a tunable wavelength direction-bound add/drop transponder or a tunable wavelength directionless add/drop transponder operable at said wavelength is available at each node.

摘要翻译： 一种配置光路的方法，包括：在光通信网络中选择从第一节点到第二节点的路径; 识别可以在所述路径上连续使用的每个波长，并且为所述光路中的一个选择所述识别的波长之一的传输波长，其中：在所述波长处的固定波长方向绑定的分插转发器加法可在每个节点处可用; 如果不满足该第一要求，则可以在每个节点处获得固定波长方向绑定的分插转发器或在所述波长下可操作的固定波长无向分插转发器， 并且如果不满足该第二要求，则可在每个节点处获得可调波长方向绑定的分插转发器或在所述波长下可操作的可调波长无向分插转发器。

公开(公告)号：US20140078895A1

公开(公告)日：2014-03-20

申请号：US14002082

申请日：2011-04-15

申请人： Paola Iovanna ,  Giulio Bottari ,  Fabio Ubaldi

发明人： Paola Iovanna ,  Giulio Bottari ,  Fabio Ubaldi

IPC分类号： H04L12/24

CPC分类号： H04L41/0668 ,  H04L45/22 ,  H04L45/28 ,  H04L45/302 ,  H04L45/44

摘要： Computing working paths and recovery paths in a telecommunications network having nodes capable of supporting different recovery schemes, is based on traffic demands having an indication of a desired recovery service level, for that demand. A path computation is carried out to select a working path through the network for each of the traffic demands and to select which of the different recovery schemes to use according to the service level. The selected working paths and their associated recovery schemes are then set up in the network. By leaving the selection of the recovery scheme to the path computation stage, network resources can be used more efficiently, and operators can specify resiliency in terms of needs rather than in terms of the technology of the network. Thus operators can be insulated from the detailed knowledge of the network.

摘要翻译： 计算具有能够支持不同恢复方案的节点的电信网络中的工作路径和恢复路径是基于针对该需求的具有期望的恢复服务级别的指示的业务需求。 执行路径计算以针对每个业务需求选择通过网络的工作路径，并根据服务级别选择要使用哪一种不同的恢复方案。 然后在网络中设置所选择的工作路径及其相关的恢复方案。 通过将恢复方案的选择留在路径计算阶段，可以更有效地使用网络资源，运营商可以根据需要而不是网络技术来规定弹性。 因此，运营商可以与网络的详细知识隔离。

公开(公告)号：US20130216216A1

公开(公告)日：2013-08-22

申请号：US13701613

申请日：2010-06-16

申请人： Giulio Bottari ,  Paola Iovanna

发明人： Giulio Bottari ,  Paola Iovanna

IPC分类号： H04B10/038

CPC分类号： H04B10/038 ,  H04J14/0212 ,  H04J14/0284 ,  H04J14/0295

摘要： A node for an optical network has an electrical selector (30, 35) coupled to a first transponder for selecting which of first or second connections, is carried. A connection controller (80, 130) cooperates with other nodes to set up the first connection on a main path using a second transponder, and to reserve a first restoration path for the first connection. A second connection (best effort traffic) is set up on at least part of the reserved first restoration path by controlling the electrical selector. If the main path fails, the first connection is restored by controlling the electrical selector to select the first connection for the first restoration path in place of the second connection. By having an electrical selector, a change can be made more rapidly than if done only optically.

摘要翻译： 用于光网络的节点具有耦合到第一应答器的电选择器（30,35），用于选择携带第一或第二连接中的哪一个。 连接控制器（80,130）与其他节点协作以使用第二应答器在主路径上建立第一连接，并且为第一连接预留第一恢复路径。 通过控制电气选择器，在保留的第一恢复路径的至少一部分上建立第二连接（尽力而为流量）。 如果主路径失败，则通过控制电选择器来代替第二连接来选择第一恢复路径的第一连接来恢复第一连接。 通过使用电子选择器，可以比仅在光学上完成更改更快。

公开(公告)号：US20130142508A1

公开(公告)日：2013-06-06

申请号：US13699799

申请日：2010-06-16

申请人： Giulio Bottari ,  Diego Caviglia ,  Daniele Ceccarelli

发明人： Giulio Bottari ,  Diego Caviglia ,  Daniele Ceccarelli

IPC分类号： H04B10/27

CPC分类号： H04B10/27 ,  H04J14/02

摘要： A method of configuring a path between an ingress node and an egress node in an optical communications network, the path comprising a first hop and a subsequent hop. The method includes: a) selecting a candidate hop for the first hop of the path; b) obtaining a value of a signal feasibility parameter for the candidate hop; c) determining whether said value lies within an acceptable value range and if one is, accepting said candidate hop for the first hop of the path, and if one is not, repeating steps a. to c.; d) selecting a candidate hop for the subsequent hop of path; e) obtaining a value of a signal feasibility parameter for a combined path comprising the first hop and the candidate hop for the subsequent hop of the path; f) determining whether said value lies within an acceptable value range, if one is, acceptable value range accepting said candidate hop for the subsequent hop of the path, and if one is not, repeating steps d. and e.; and g) generating and transmitting a control signal for configuring the path. Each step of obtaining a value of a signal feasibility parameter comprises checking whether a measured value of the signal feasibility parameter is available, and if one is, retrieving said measured value and if one is not, calculating an estimated value of the signal feasibility parameter.

摘要翻译： 一种在光通信网络中配置入口节点和出口节点之间的路径的方法，所述路径包括第一跳和后续跳。 该方法包括：a）选择路径第一跳的候选跳; b）获得候选跳的信号可行性参数的值; c）确定所述值是否在可接受的值范围内，如果是，则接受所述路径的第一跳的所述候选跳，如果不是，则重复步骤a。 到C. d）为随后的路径跳跃选择候选跳; e）获得用于组合路径的信号可行性参数的值，所述组合路径包括所述路径的后续跳跃的所述第一跳​​和候选跳; f）确定所述值是否在可接受的值范围内，如果是接受所述路径的后续跳跃的所述候选跳跃的可接受值范围，并且如果不是，则重复步骤d。 和e。 以及g）生成和发送用于配置路径的控制信号。 获取信号可行性参数的值的每个步骤包括检查信号可行性参数的测量值是否可用，并且如果是，检索所述测量值，如果不是，则计算信号可行性参数的估计值。

公开(公告)号：US20120237207A1

公开(公告)日：2012-09-20

申请号：US13095053

申请日：2011-04-27

申请人： Diego Caviglia ,  Giulio Bottari ,  Daniele Ceccarelli

发明人： Diego Caviglia ,  Giulio Bottari ,  Daniele Ceccarelli

IPC分类号： H04B17/00

CPC分类号： H04J14/0227 ,  H04J14/0257 ,  H04J14/0267 ,  H04J14/0268 ,  H04J14/0269 ,  H04J14/0271

摘要： The invention relates to a method in a border node of an optical network and in an external optical channel originating apparatus and to a border node of an optical network and a router. The invention is particularly applicable to optical path validation in an optical network for an externally originating optical channel. The invention may be used during an optical path fault recovery operation.In the method in a border node of an optical network optical channel traffic parameter associated with an optical channel are received from an optical channel originator external to the optical network. The received optical channel traffic 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.In the method in an optical channel originator external to an optical network the optical channel traffic parameters associated with an optical channel originating at the optical channel originator are sent to a border node of the optical network. An optical channel availability message indicating the availability at the optical network border node of an optical path within the optical network for the optical channel with which the optical channel traffic parameters are associated is received from the border node. An available optical channel status of the optical channel is determined from the received optical channel availability message for the optical channel.

摘要翻译： 本发明涉及光网络和外部光信道发起装置的边界节点和光网络和路由器的边界节点的方法。 本发明特别适用于用于外部发送光信道的光网络中的光路验证。 本发明可以在光路故障恢复操作期间使用。 在光网络的光信道发起方接收与光信道相关联的光网络光信道业务参数的边界节点中的方法。 所接收的光信道业务参数用于确定用于外部发起的光信道的光网络内的至少一个光路的适用性。 如果确定合适的光路，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处的可用性的光信道可用性消息。 在光网络外部的光信道发起方的方法中，将与在光信道发起方发起的光信道相关联的光信道业务参数发送到光网络的边界节点。 从边界节点接收光信道可用性消息，指示光网络边界节点对于光信道业务参数所关联的光信道的光网络内的光路的可用性。 从所接收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。