公开(公告)号：US09112629B2

公开(公告)日：2015-08-18

申请号：US13516363

申请日：2010-01-18

申请人： Stefano Ruffini ,  Raoul Fiorone ,  Sergio Lanzone ,  Orazio Toscano

发明人： Stefano Ruffini ,  Raoul Fiorone ,  Sergio Lanzone ,  Orazio Toscano

IPC分类号： H04J3/06

CPC分类号： H04J3/0679 ,  H04J3/0641

摘要： Configuring a node (410) of a synchronization network involves identifying (10) possible alternative time synchronization trails arranged to carry time synchronization information for time synchronization at the node, and possible alternative frequency trails, arranged to carry frequency synchronization information for frequency synchronization at the node. Using information about the sources (20), a comparison of the trails (30) is biased to increase a likelihood of choosing time synchronization and frequency trails which share the same source, over a likelihood of choosing trails with different sources. This can help avoid divergence and consequent bit errors arising from phase errors, resulting from trails having different sources. It can encompass for example changing both to a new common source, or changing one or both trails while still using the old common source.

摘要翻译： 配置同步网络的节点（410）涉及识别（10）布置为携带用于节点处的时间同步的时间同步信息的可能的备选时间同步轨迹，以及可能的替代频道，其被布置为携带用于频率同步的频率同步信息 节点。 使用关于源（20）的信息，对于选择具有不同来源的路径的可能性，路径（30）的比较被偏置以增加选择共享相同源的时间同步和频道的可能性。 这可以帮助避免由于具有不同来源的路径导致的相位误差产生的分歧和相应的位错误。 它可以包括例如将两者都改为新的公共源，或者改变一个或两个路径，同时仍然使用旧的公共源。

公开(公告)号：US20130039220A1

公开(公告)日：2013-02-14

申请号：US13516363

申请日：2010-01-18

申请人： Stefano Ruffini ,  Raoul Fiorone ,  Sergio Lanzone ,  Orazio Toscano

发明人： Stefano Ruffini ,  Raoul Fiorone ,  Sergio Lanzone ,  Orazio Toscano

IPC分类号： H04L12/28

CPC分类号： H04J3/0679 ,  H04J3/0641

摘要： Configuring a node (410) of a synchronization network involves identifying (10) possible alternative time synchronization trails arranged to carry time synchronization information for time synchronization at the node, and possible alternative frequency trails, arranged to carry frequency synchronization information for frequency synchronization at the node. Using information about the sources (20), a comparison of the trails (30) is biased to increase a likelihood of choosing time synchronization and frequency trails which share the same source, over a likelihood of choosing trails with different sources. This can help avoid divergence and consequent bit errors arising from phase errors, resulting from trails having different sources. It can encompass for example changing both to a new common source, or changing one or both trails while still using the old common source.

摘要翻译： 配置同步网络的节点（410）涉及识别（10）布置为携带用于节点处的时间同步的时间同步信息的可能的备选时间同步轨迹，以及可能的替代频道，其被布置为携带用于频率同步的频率同步信息 节点。 使用关于源（20）的信息，对于选择具有不同来源的路径的可能性，路径（30）的比较被偏置以增加选择共享相同源的时间同步和频道的可能性。 这可以帮助避免由于具有不同来源的路径导致的相位误差产生的分歧和相应的位错误。 它可以包括例如将两者都改为新的公共源，或者改变一个或两个路径，同时仍然使用旧的公共源。

公开(公告)号：US20130010813A1

公开(公告)日：2013-01-10

申请号：US13503681

申请日：2009-10-29

申请人： Stefano Ruffini ,  Raoul Fiorone ,  Orazio Toscano

发明人： Stefano Ruffini ,  Raoul Fiorone ,  Orazio Toscano

IPC分类号： H04J3/06

CPC分类号： H04J3/0697 ,  H04J3/0664 ,  H04J3/0673

摘要： There is provided a method of optimizing timing packet transport in a network node, the method comprising using a locally available stable frequency reference at the network node to provide a pre-determined network node transit time for timing packets in at least one direction into or out of the network node. There is also provided a network node comprising a locally available stable frequency reference and circuitry adapted to apply a pre-determined network node transit time, L, to all timing packets transiting the network node in at least one direction into or out of a network node dependent on the locally available stable frequency reference.

摘要翻译： 提供了一种优化网络节点中的定时分组传输的方法，所述方法包括在网络节点处使用本地可用的稳定频率参考来提供预定的网络节点传播时间，用于将至少一个方向上的定时分组输入或输出 的网络节点。 还提供了一种网络节点，其包括本地可用的稳定频率参考和适于将至少一个方向上的网络节点的网络节点传输时间L应用于网络节点的所有定时分组的网络节点 取决于本地可用的稳定频率参考。

公开(公告)号：US08929405B2

公开(公告)日：2015-01-06

申请号：US13503681

申请日：2009-10-29

申请人： Stefano Ruffini ,  Raoul Fiorone ,  Orazio Toscano

发明人： Stefano Ruffini ,  Raoul Fiorone ,  Orazio Toscano

IPC分类号： H04J3/06

CPC分类号： H04J3/0697 ,  H04J3/0664 ,  H04J3/0673

摘要： There is provided a method of optimizing timing packet transport in a network node, the method comprising using a locally available stable frequency reference at the network node to provide a pre-determined network node transit time for timing packets in at least one direction into or out of the network node. There is also provided a network node comprising a locally available stable frequency reference and circuitry adapted to apply a pre-determined network node transit time, L, to all timing packets transiting the network node in at least one direction into or out of a network node dependent on the locally available stable frequency reference.

摘要翻译： 提供了一种优化网络节点中的定时分组传输的方法，所述方法包括在网络节点处使用本地可用的稳定频率参考来提供预定的网络节点传播时间，用于将至少一个方向上的定时分组输入或输出 的网络节点。 还提供了一种网络节点，其包括本地可用的稳定频率参考和适于将至少一个方向上的网络节点的网络节点传输时间L应用于网络节点的所有定时分组的网络节点 取决于本地可用的稳定频率参考。

公开(公告)号：US09628259B2

公开(公告)日：2017-04-18

申请号：US14403100

申请日：2012-08-17

申请人： Sergio Lanzone ,  Stefano Ruffini ,  Orazio Toscano

发明人： Sergio Lanzone ,  Stefano Ruffini ,  Orazio Toscano

IPC分类号： H04B10/00 ,  H04L7/00 ,  H04J3/06 ,  H04J3/16

CPC分类号： H04L7/0075 ,  H04J3/065 ,  H04J3/0667 ,  H04J3/0673 ,  H04J3/1652

摘要： A method distributes clock synchronization information within an optical communications network having a plurality of network elements. The method receives an ingress clock synchronization message at a first network element. The ingress clock synchronization message includes a clock synchronization message identifier and a correction field. The clock synchronization message identifier is inserted into an optical channel frame overhead and the ingress clock synchronization message is inserted into an optical channel frame payload. The optical channel frame overhead and the optical channel frame payload are transmitted across the first network element, across the network to a second network element, and across the second network element. A transit time of the clock synchronization message identifier is determined across each of the network elements. At the second network element, the correction field of the ingress clock synchronization message is updated with the transit times to form an egress clock synchronization message.

公开(公告)号：US20150139663A1

公开(公告)日：2015-05-21

申请号：US14403100

申请日：2012-08-17

申请人： Sergio Lanzone ,  Stefano Ruffini ,  Orazio Toscano

发明人： Sergio Lanzone ,  Stefano Ruffini ,  Orazio Toscano

IPC分类号： H04L7/00

CPC分类号： H04L7/0075 ,  H04J3/065 ,  H04J3/0667 ,  H04J3/0673 ,  H04J3/1652

摘要： A method distributes clock synchronization information within an optical communications network having a plurality of network elements. The method receives an ingress clock synchronization message at a first said network element. The ingress clock synchronization message includes a clock synchronisation message identifier and a correction field. The clock synchronisation message identifier is inserted into an optical channel frame overhead and the ingress clock synchronisation message is inserted into an optical channel frame payload. The optical channel frame overhead and the optical channel frame payload are transmitted across the first network element, across the network to a second said network element, and across the second network element. A transit time of the clock synchronisation message identifier is determined across each of the network elements. At the second network element, the correction field of the ingress clock synchronisation message is updated with said transit times to form an egress clock synchronisation message.

摘要翻译： 一种方法在具有多个网络元件的光通信网络内分发时钟同步信息。 该方法在第一所述网络元件处接收入口时钟同步消息。 入口时钟同步消息包括时钟同步消息标识符和校正字段。 将时钟同步消息标识符插入到光信道帧开销中，并将入口时钟同步消息插入到光信道帧有效载荷中。 光通道帧开销和光信道帧有效载荷通过第一网络元件跨网络传输到第二所述网络元件，并穿过第二网络元件。 在每个网络元件上确定时钟同步消息标识符的传输时间。 在第二网元处，以所述传送时间更新入口时钟同步消息的校正字段，以形成出口时钟同步消息。

公开(公告)号：US08842994B2

公开(公告)日：2014-09-23

申请号：US13592297

申请日：2012-08-22

申请人： Sergio Lanzone ,  Orazio Toscano ,  Stefano Ruffini

发明人： Sergio Lanzone ,  Orazio Toscano ,  Stefano Ruffini

IPC分类号： H04B10/00 ,  H04J3/06 ,  H04L7/00

CPC分类号： H04L7/0075 ,  H04J3/065

摘要： A method and system of distributing clock synchronization information within an optical communications network including a plurality of network elements, in which a first network element receives an ingress clock synchronization message, the ingress clock synchronization message including a clock synchronization message identifier and a correction field. The first network element inserts the clock synchronization message identifier into an optical channel frame overhead and inserts the ingress clock synchronization message into an optical channel frame payload. The first network element transmits the optical channel frame overhead and the optical channel frame payload to a second network element, and determines a transit time of the clock synchronization message identifier across each of the network elements. The second network element updates the correction field of the ingress clock synchronization message with said transit times to form an egress clock synchronization message.

摘要翻译： 一种在包括多个网络元件的光通信网络内分发时钟同步信息的方法和系统，其中第一网络元件接收入口时钟同步消息，所述入口时钟同步消息包括时钟同步消息标识符和校正字段。 第一网络元件将时钟同步消息标识符插入到光信道帧开销中，并将入口时钟同步消息插入到光信道帧有效载荷中。 第一网络单元将光信道帧开销和光信道帧有效载荷发送到第二网元，并且确定每个网络元件上的时钟同步消息标识符的传播时间。 第二网元更新具有所述传送时间的入口时钟同步消息的校正字段以形成出口时钟同步消息。

公开(公告)号：US08934769B2

公开(公告)日：2015-01-13

申请号：US13511368

申请日：2009-11-25

申请人： Orazio Toscano ,  Sergio Lanzone

发明人： Orazio Toscano ,  Sergio Lanzone

IPC分类号： H04B10/08 ,  H04B17/00 ,  H04J3/14

CPC分类号： H04J3/14 ,  H04J2203/006

摘要： An optical transport network signal (OTM) comprising at least one optical channel is received at a first network equipment. The optical transport network signal (OTM) is processed to extract optical data units (ODUk) for each optical channel (OCh). There is detection for defects during the processing. The optical data units are retransmitted within optical transport units (OTUk) towards a second network equipment. When a defect has been detected, the retransmitting comprises inserting an optical channel transport unit alarm indication signal (OTUk-AIS) in an optical channel transport unit (OTUk) containing optical channel data units (ODUk) that are affected by the detected defect. The second network equipment detects for the presence of the optical channel transport unit alarm indication signal (OTUk-AIS) and generation of an alarm is inhibited for any optical channel data units (ODUk) contained within the optical channel transport unit that comprises the optical channel transport unit alarm indication signal (OTUk-AIS). The network equipments can comprise a WDM or DWDM equipment and a cross-connect.

摘要翻译： 在第一网络设备处接收包括至少一个光信道的光传输网络信号（OTM）。 处理光传输网络信号（OTM）以提取每个光信道（OCh）的光数据单元（ODUk）。 检测处理过程中的缺陷。 光学数据单元在光学传输单元（OTUk）内被发送到第二网络设备。 当检测到缺陷时，重传包括在包含受检测到的缺陷影响的光信道数据单元（ODUk）的光信道传输单元（OTUK）中插入光信道传输单元报警指示信号（OTUK-AIS）。 第二网络设备检测光信道传输单元报警指示信号（OTUK-AIS）是否存在，并且对包含在包括光信道的光信道传输单元中的任何光信道数据单元（ODUk）禁止产生报警 运输单元报警指示信号（OTUk-AIS）。 网络设备可以包括WDM或DWDM设备和交叉连接。

公开(公告)号：US08891369B2

公开(公告)日：2014-11-18

申请号：US12809588

申请日：2007-12-21

申请人： Orazio Toscano ,  Stefano Deprati ,  Sergio Lanzone

发明人： Orazio Toscano ,  Stefano Deprati ,  Sergio Lanzone

IPC分类号： H04B7/212 ,  H04L12/54 ,  H04L12/64 ,  H04L12/701 ,  H04B7/216

CPC分类号： H04L12/5692 ,  H04L12/6402 ,  H04L45/00 ,  H04L47/70

摘要： Network node comprising input equipment, switching equipment and output equipment, the input equipment is arranged to be capable of packetizing time division multiplexed (TDM) traffic flows, the switching equipment is arranged to be capable of routing the packetized data from the input equipment to the output equipment, and the output equipment is arranged to be capable of reassembling the flows into time division multiplexed format, wherein the input equipment is also arranged to be capable of causing the data frequency of the packetized data sent to the switching equipment to be substantially equal to a predetermined data frequency.

摘要翻译： 包括输入设备，交换设备和输出设备的网络节点，输入设备被配置为能够对时分复用（TDM）业务流进行分组，交换设备被布置为能够将分组化数据从输入设备路由到 输出设备，并且输出设备被布置为能够将流重新组合成时分复用格式，其中输入设备还被布置为能够使发送到交换设备的分组化数据的数据频率基本相等 到预定的数据频率。

公开(公告)号：US09264168B2

公开(公告)日：2016-02-16

申请号：US13996444

申请日：2011-03-15

申请人： Sergio Lanzone ,  Ghani Abdul Muttalib Abbas ,  Orazio Toscano

发明人： Sergio Lanzone ,  Ghani Abdul Muttalib Abbas ,  Orazio Toscano

IPC分类号： H03M13/00 ,  H04J14/02 ,  H04L1/00 ,  H04L1/20

CPC分类号： H04L1/0041 ,  H04B10/07953 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0273 ,  H04J2203/006 ,  H04J2203/0089 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0045 ,  H04L1/203

摘要： A node for a communications network has a converter for digitizing at a receiver clock rate a received optical signal received over an optical link from an optical transmitter at a source node, a framer for detecting frames and a forward error correction part for correcting errors in the payload of the frame. An error rate in the received payload part is monitored and a processor sends, according to the monitored error rate, a request to the optical transmitter to adapt a length of the transmitted forward error correction part and to adapt a clock rate of the transmission of the frame if FEC length is reduced or FEC is disabled. This can enable power saving, when less FEC information is being sent.

摘要翻译： 用于通信网络的节点具有转换器，用于以接收机时钟速率对来自源节点处的光发送器的光链路接收的光信号进行数字化，用于检测帧的成帧器和用于校正错误的前向纠错部分 帧的有效载荷。 监视接收到的有效载荷部分中的错误率，并且处理器根据所监视的错误率向光发射机发送一个适配所发送的前向纠错部分的长度的请求，并且调整发送的前向纠错部分的时钟速率 如果FEC长度减少或FEC被禁用，则为帧。 当发送较少的FEC信息时，可以实现省电。