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1. 发明授权

US09768904B2 Method and apparatus for allocating slots for transmission of data 有权
公开(公告)号：US09768904B2
公开(公告)日：2017-09-19
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.

2. 发明授权

US09338529B2 Routing and bandwidth assignment for flexible grid wavelength switched optical networks 有权
标题翻译：柔性网格波长交换光网络的路由和带宽分配
公开(公告)号：US09338529B2
公开(公告)日：2016-05-10
申请号：US14240232
申请日：2011-09-30
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 , H04Q11/00
CPC分类号： H04Q11/0062 , H04J14/0224 , H04J14/0227 , H04J14/0257 , H04J14/026 , H04J14/0267 , H04J14/0269 , H04J14/0271 , H04Q2011/0086
摘要： Routing and bandwidth assignment of new paths of different bandwidths, occupying different numbers of adjacent frequency slots in a wavelength switched optical network, involves selecting a route, and assigning a set of adjacent frequency slots. The assignment can place wider bandwidth ones of the new paths at an opposite end of a spectrum of the available frequency slots, to an end where narrower bandwidth ones are placed. A size of sets of available adjacent slots remaining after the assignment is likely to be increased, compared to a conventional first fit assignment. A wider subsequent new path can sometimes be accommodated along all or some of the route and thus the blocking probability can be lowered. The selecting of which of the possible routes to use can be made dependent on which has more sets of available adjacent frequency slots, or which has a wider gap between occupied slots.
摘要翻译：在波长交换光网络中占用不同数量的相邻频率槽的不同带宽的新路径的路由和带宽分配涉及选择路由和分配一组相邻频率时隙。该分配可以将更宽的带宽的新路径放置在可用频率隙的频谱的另一端，到达放置较窄带宽的端点。与传统的第一拟合分配相比，分配之后剩余的可用相邻狭缝的集合的大小可能增加。有时可以沿着所有或某些路线容纳更宽的后续新路径，从而可以降低阻塞概率。可以选择要使用哪些可能的路由取决于哪些具有更多的可用相邻频率槽的集合，或者在占用时隙之间具有更宽的间隙。

3. 发明授权

US09325446B2 Method of configuring an optical path, a path computation engine and an optical communications network node 有权
标题翻译：配置光路的方法，路径计算引擎和光通信网络节点
公开(公告)号：US09325446B2
公开(公告)日：2016-04-26
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： H04J14/00 , 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。

4. 发明授权

US08929359B2 Configuring synchronous optical switches 有权
标题翻译：配置同步光开关
公开(公告)号：US08929359B2
公开(公告)日：2015-01-06
申请号：US13141223
申请日：2008-12-22
申请人： Nicola Andriolli , Alberto Bianchi , Piero Castoldi , Pier Giorgio Raponi
发明人： Nicola Andriolli , Alberto Bianchi , Piero Castoldi , Pier Giorgio Raponi
IPC分类号： H04L12/66 , H04J14/02 , H04Q11/00
CPC分类号： H04J14/0227 , H04L49/3045 , H04L49/357 , H04Q11/0005 , H04Q2011/0018 , H04Q2011/0039 , H04Q2011/005
摘要： A method (10) of configuring a synchronous optical switch to route received data cells. The synchronous optical switch comprises optical switch transmitter modules, each comprising tunable optical transmitters, optical switch receiver modules, each comprising optical receivers, and optical connections between the transmitter modules and receiver modules. For each optical switch transmitter module, the method: assigns (12) wavelengths associated with the received data cells to the transmitters such that each wavelength is assigned to a different transmitter; and generates (14) a control signal for controlling the operating wavelength of each transmitter. For each wavelength, the method: allocates (16) to each transmitter an optical connection such that each optical switch transmitter module has no more than one connection exiting it at said wavelength and each optical receiver module has no more than one connection entering it at said wavelength; and generates (18) a control signal for connecting each transmitter to the respective optical connection.
摘要翻译：一种配置同步光交换机以路由接收的数据信元的方法（10）。同步光开关包括光开关发射器模块，每个模块包括可调光发射器，光开关接收器模块，每个包括光接收器，以及发射器模块和接收器模块之间的光连接。对于每个光开关发射器模块，该方法：将与所接收的数据单元相关联的（12）波长分配给发射机，使得每个波长被分配给不同的发射机; 并产生用于控制每个发射机的工作波长的控制信号（14）。对于每个波长，该方法：向每个发射机分配（16）光学连接，使得每个光学开关发射器模块在所述波长处具有不超过一个离开它的连接，并且每个光接收器模块具有不超过一个在所述波长处进入的连接波长; 并且产生（18）用于将每个发射器连接到相应的光学连接的控制信号。

5. 发明授权

US09490927B2 Changing the spectral position of a lightpath 有权
标题翻译：改变光路的光谱位置
公开(公告)号：US09490927B2
公开(公告)日：2016-11-08
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。

6. 发明授权

US08724988B2 Synchronous packet switches 失效
标题翻译：同步分组交换机
公开(公告)号：US08724988B2
公开(公告)日：2014-05-13
申请号：US13319067
申请日：2009-07-22
申请人： Nicola Andriolli , Antonella Bogoni , Alberto Bianchi , Piero Castoldi , Luca Poti , Pier Giorgio Raponi
发明人： Nicola Andriolli , Antonella Bogoni , Alberto Bianchi , Piero Castoldi , Luca Poti , Pier Giorgio Raponi
IPC分类号： H04J14/00 , H04B10/20
CPC分类号： H04Q11/0005 , H04L12/6402 , H04Q11/0066 , H04Q2011/0009 , H04Q2011/0015 , H04Q2011/0018 , H04Q2011/0022 , H04Q2011/0032 , H04Q2011/0039
摘要： A synchronous packet switch comprises output modules, input modules, optical connections and a switch control unit. The output modules comprise optical receivers each configured to receive optical signals at a different wavelength. The input modules receive electric signals carrying data cells to be routed. Each input module comprises optical transmitters, each configurable to generate an optical signal at a different wavelength, and routing apparatus comprising output ports. Each output module has at least one output port allocated to it. The routing apparatus is configurable to route a received optical signal to a selected output port. The optical connections are arranged to couple output ports to respective output modules. The switch control unit controls routing of the optical signals from the transmitters to the output modules and generates a routing control signal for configuring the routing apparatus to route an optical signal from a transmitter to a selected output port.
摘要翻译：同步分组交换机包括输出模块，输入模块，光学连接和开关控制单元。输出模块包括各自被配置为接收不同波长的光信号的光接收器。输入模块接收携带要路由的数据单元的电信号。每个输入模块包括光发送器，每个光发送器可配置为产生不同波长的光信号，以及包括输出端口的路由设备。每个输出模块至少有一个分配给它的输出端口。路由设备可配置为将接收到的光信号路由到所选择的输出端口。光学连接被布置成将输出端口耦合到相应的输出模块。开关控制单元控制从发射机到输出模块的光信号的路由，并产生用于配置路由设备以将光信号从发射机路由到所选输出端口的路由控制信号。

7. 发明申请

US20140023364A1 ESTABLISHING CONNECTIONS IN A MULTI-RATE OPTICAL NETWORK 有权
标题翻译：建立多速光网络连接
公开(公告)号：US20140023364A1
公开(公告)日：2014-01-23
申请号：US13825017
申请日：2010-10-15
申请人： Nicola Sambo , Giulio Bpttari , Piero Castoldi , Filippo Cugini , Paola Iovanna
发明人： Nicola Sambo , Giulio Bpttari , Piero Castoldi , Filippo Cugini , Paola Iovanna
IPC分类号： H04Q11/00
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。

8. 发明申请

US20130064544A1 CONTROL OF TOKEN HOLDING IN MULTI-TOKEN OPTICAL NETWORK 有权
标题翻译：在多光盘网络中控制TOKEN控制
公开(公告)号：US20130064544A1
公开(公告)日：2013-03-14
申请号：US13581372
申请日：2010-03-25
申请人： Pier Giorgio Raponi , Nicola Andriolli , Piero Castoldi , Marzio Puleri
发明人： Pier Giorgio Raponi , Nicola Andriolli , Piero Castoldi , Marzio Puleri
IPC分类号： H04J14/00
CPC分类号： H04L47/215 , H04J14/0204 , H04J14/0205 , H04J14/0212 , H04J14/0213 , H04J14/0221 , H04J14/0257 , H04J14/0267 , H04J14/0269 , H04J14/0275 , H04L12/433 , H04L45/62
摘要： A node (260, 50) for a multi-token optical communications network has optical channels between the node and other nodes, each channel having a token (T1, T2, T3), passed between nodes, to indicate that a corresponding optical channel is available for transmission during a token holding time. The node has a transmitter (280) for transmitting packets over the optical channels, a buffer (170, 270) for queuing packets before transmission, and a transmit controller (170, 290) configured to control the buffer to forward an initial packet or packets from the buffer to the transmitter once a token has been received. The transmit controller determines how much of the token holding time remains after the transmission of the initial packet or packets, and then controls the buffer to forward a further packet according to the remaining token holding time. A maximum packet delay can be reduced where there is asymmetric traffic. A token holding time can be different for different nodes.
摘要翻译：用于多令牌光通信网络的节点（260,50）在节点和其他节点之间具有光信道，每个信道具有在节点之间传递的令牌（T1，T2，T3），以指示对应的光信道是可用于在令牌保持时间期间传输。节点具有用于通过光信道发送分组的发射机（280），用于在传输之前对分组进行排队的缓冲器（170,270）;以及发射控制器（170,290），被配置为控制缓冲器转发初始分组或分组一旦接收到令牌，就从缓冲区到发射机。发送控制器确定在发送初始分组或分组之后剩余多少令牌保持时间，然后根据剩余令牌保持时间来控制缓冲器转发另外的分组。在存在不对称流量的情况下，可以减少最大分组延迟。不同节点的令牌保持时间可能不同。

9. 发明申请

US20120002550A1 GLOBAL PROVISIONING OF ZERO-BANDWIDTH TRAFFIC ENGINEERING LABEL SWITCHED PATHS 有权
标题翻译：零带宽交通工程标签开关板的全球规定
公开(公告)号：US20120002550A1
公开(公告)日：2012-01-05
申请号：US13254871
申请日：2009-05-14
申请人： Filippo Cugini , Annikki Welin , Luca Valcarenghi , Piero Castoldi , Francesco Paolucci
发明人： Filippo Cugini , Annikki Welin , Luca Valcarenghi , Piero Castoldi , Francesco Paolucci
IPC分类号： H04L12/26
CPC分类号： H04L45/00 , H04L45/12 , H04L45/24 , H04L45/302 , H04L45/38 , H04L45/50 , H04L45/507
摘要： A method of load balancing zero-bandwidth Traffic Engineering Label Switching Paths (0-bw TE LSPs) in a communication network having a plurality of network nodes and a plurality of network links connecting the nodes. The method may be implemented in a centralized Path Computation Element (PCE) or in an ingress router. Each equal cost path from a source node to a destination node is identified from network topology information. A probability of selecting each equal cost shortest path is determined using an iterative Global Load balancing Algorithm (GLA) and each 0-bw TE LSP is provisioned with a specific probability such that the 0-bw TE LSPs are uniformly distributed over all network links.
摘要翻译：在具有多个网络节点的通信网络和连接节点的多个网络链路的负载平衡零带宽流量工程标签交换路径（0-bw TE LSP）的方法。该方法可以在集中式路径计算元件（PCE）或入口路由器中实现。从源节点到目的地节点的每个相等的成本路径是从网络拓扑信息中识别出来的。使用迭代全局负载平衡算法（GLA）确定选择每个相等成本最短路径的概率，并且以特定概率提供每个0-bw TE LSP，使得0-bw TE LSP均匀地分布在所有网络链路上。

10. 发明申请

US20110229122A1 RESTORATION SCHEME FOR AN OPTICAL NETWORK AND METHOD OF USING SUCH A SCHEME 有权
标题翻译：光网络的恢复方案和使用这种方案的方法
公开(公告)号：US20110229122A1
公开(公告)日：2011-09-22
申请号：US13119520
申请日：2008-09-19
申请人： Piero Castoldi , Filippo Cugini , Nicola Sambo , Isabella Cerutti , Alessio Giorgetti , Luca Valcarenghi
发明人： Piero Castoldi , Filippo Cugini , Nicola Sambo , Isabella Cerutti , Alessio Giorgetti , Luca Valcarenghi
IPC分类号： H04B10/00
CPC分类号： H04Q11/0062 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0279 , H04J14/0284 , H04Q2011/0073 , H04Q2011/0081 , H04Q2011/0086
摘要： A method of restoration for an optical network, the network comprising a plurality of nodes (40, 50) interconnected with each other by optical links (130), a subset of the nodes (40) each comprising a regenerator, the method comprising: storing (160) a quality of transmission parameter and a regenerator availability at each of the plurality of nodes (40, 50); notifying (170) a branch node (110) in response to detecting a failure (140) within a link (130) forming part of the path between a source node (20) and a destination node (30), wherein the branch node (110) is the neighbouring upstream node (40, 50) upstream of the link failure (140), the branch node (110) having a regenerator; the branch node (110) computing (190) a restoration segment (100) to a merge node (120) having a regenerator which is a neighbouring downstream node which is downstream of the link failure (140), the restoration path (100) being based on the quality of transmission parameter and regenerator availability information; restoring (180) the path between the source node (20) and the destination node (30) using the restoration segment (100).
摘要翻译：一种用于光网络的恢复方法，所述网络包括通过光链路（130）彼此互连的多个节点（40,50），每个节点（40）的子集包括再生器，所述方法包括：存储（160）在所述多个节点（40,50）中的每个节点处的传输参数的质量和再生器可用性; 响应于检测到形成源节点（20）和目的地节点（30）之间的路径的一部分的链路（130）内的故障（140），通知（170）分支节点（110），其中分支节点 110）是链路故障（140）上游的相邻上游节点（40,50），分支节点（110）具有再生器; 所述分支节点（110）向具有作为在所述链路故障（140）的下游的相邻下游节点的再生器的合并节点（120）计算（190）恢复段（100），所述恢复路径（100）基于传输参数和再生器可用性信息的质量; 使用恢复段（100）恢复（180）源节点（20）和目的地节点（30）之间的路径。

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