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1. 发明申请

US20150104167A1 DETERMINING PROPERTIES OF AN OPTICAL COMMUNICATIONS PATH IN AN OPTICAL COMMUNICATIONS NETWORK 有权
标题翻译：确定光通信网络中光通信路径的特性
公开(公告)号：US20150104167A1
公开(公告)日：2015-04-16
申请号：US14401106
申请日：2012-06-19
申请人： Giulio Bottari , Stefano Ruffini
发明人： Giulio Bottari , Stefano Ruffini
IPC分类号： H04B10/077
CPC分类号： H04B10/0775 , H04B10/2513 , H04J3/0661 , H04J3/0697
摘要： A method of determining properties of an optical communications path between a first optical network node (A) and a second optical network node (B) determines, at the second optical network node (B), a time difference between respective first and second optical test signals received on different wavelengths (λ1, λ2) from the first optical network node. The method also determines, at the second optical network node (B), a real-time chromatic dispersion parameter for each of the wavelengths using a respective coherent receiver at the second optical network node. The method can be used to determine length of the path between the nodes (A, B). The method can be used to determine propagation delay between the nodes (A, B), or asymmetry in propagation delay between the nodes (A, B). Where separate paths are used for forward and reverse transmission directions, measurements can be made of each path.
摘要翻译：确定第一光网络节点（A）和第二光网络节点（B）之间的光通信路径的属性的方法在第二光网络节点（B）处确定相应的第一和第二光学测试从第一光网络节点接收的不同波长（λ1，λ2）的信号。该方法还在第二光网络节点（B）处确定在第二光网络节点处使用相应的相干接收机的每个波长的实时色散参数。该方法可用于确定节点（A，B）之间路径的长度。该方法可用于确定节点（A，B）之间的传播延迟，或节点（A，B）之间传播延迟的不对称性。在使用独立路径用于正向和反向传输方向的情况下，可以对每条路径进行测量。

2. 发明申请

US20130202291A1 DETERMINING ASYMMETRIES IN A COMMUNICATION NETWORK 有权
标题翻译：确定通信网络中的不对称性
公开(公告)号：US20130202291A1
公开(公告)日：2013-08-08
申请号：US13879147
申请日：2011-09-13
申请人： Fabio Cavaliere , Giulio Bottari , Luca Giorgi , Stefano Ruffini
发明人： Fabio Cavaliere , Giulio Bottari , Luca Giorgi , Stefano Ruffini
IPC分类号： H04B10/08
CPC分类号： H04L43/0864 , H04B10/07 , H04B10/0775 , H04B10/0795 , H04B2210/072 , H04B2210/078 , H04J3/0667 , H04J14/0201 , H04J14/021 , H04J14/0226 , H04J14/0267 , H04J14/0273 , H04J14/0275 , H04Q11/0066 , H04Q2011/0083
摘要： A method for measuring asymmetry in propagation delay of first and second links which connect a first node to a second node of a communication network. The method comprises measuring (101) a round trip delay of the first link. The round trip delay can be measured by transmitting (102) a test signal from the first node to the second node over the first link and receiving a reply to the test signal from the second node over the first link. The method further comprises measuring (105) a round trip delay of the second link. The round trip delay can be measured by transmitting (106) a test signal to the second node over the second link and receiving a reply to the test signal from the second node over the second link. A difference in the propagation delay of the first link with respect to the second link is determined (109) using the measured round trip delays of the first link and the second link.
摘要翻译：一种用于测量将第一节点连接到通信网络的第二节点的第一和第二链路的传播延迟不对称的方法。该方法包括测量（101）第一链路的往返延迟。可以通过在第一链路上将测试信号从第一节点发送（102）到第二节点（102）并通过第一链路接收来自第二节点的测试信号的答复来测量往返延迟。该方法还包括测量（105）第二链路的往返延迟。可以通过在第二链路上向第二节点发送（106）测试信号（106）并通过第二链路从第二节点接收对测试信号的回复来测量往返延迟。使用所测量的第一链路和第二链路的往返延迟来确定第一链路相对于第二链路的传播延迟的差异（109）。

3. 发明授权

US09647784B2 Configuration of synchronisation network 有权
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
IPC分类号： H04L12/26 , 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.

4. 发明申请

US20140079409A1 METHODS OF TIME SYCHRONISATION IN COMMUNICATIONS NETWORKS 有权
标题翻译：通信网络中时间同步的方法
公开(公告)号：US20140079409A1
公开(公告)日：2014-03-20
申请号：US13985176
申请日：2011-04-27
申请人： Stefano Ruffini , Giulio Bottari
发明人： Stefano Ruffini , Giulio Bottari
IPC分类号： H04J3/06 , H04J14/00
CPC分类号： H04J3/0658 , H04J3/065 , H04J3/0667 , H04J14/00 , H04J14/08 , H04J2203/0085 , H04J2203/0089 , H04L1/0061 , H04L1/0083 , H04L7/00 , H04L43/0858
摘要： A method 10 of providing a path delay asymmetry for time synchronization between a master clock at a first client node and a slave clock at a second client node across a server communications network. The method comprises: mapping a first time protocol signal (TPS) carrying master clock time protocol data onto a first transmission signal, determining a forward mapping delay, dmf, and providing dmf to a path delay asymmetry calculation element 12; mapping a second TPS carrying slave clock time protocol data onto a second transmission signal, determining a reverse mapping delay, dmr, and providing the dmr to the patch delay asymmetry calculation element 14; applying FEC to the first transmission signal, determining a forward FEC delay, dfecf, and providing the dfecf to the path delay asymmetry calculation element 16; applying FEC to the second transmission signal, determining a reverse FEC delay, dfecr, and providing dfecr to the path delay asymmetry calculation element 18; calculating a path delay asymmetry in dependence on dmf, dmr, dfecf and dfecr 20; and providing the path delay asymmetry to a time protocol client at the second client node 22.
摘要翻译：提供用于在第一客户端节点处的主时钟与服务器通信网络之间的第二客户机节点处的从时钟之间的时间同步的路径延迟不对称的方法10。该方法包括：将携带主时钟时间协议数据的第一时间协议信号（TPS）映射到第一传输信号上，确定前向映射延迟dmf，并向路径延迟不对称计算元件12提供dmf; 将携带从时钟时间协议数据的第二TPS映射到第二传输信号，确定反向映射延迟dmr，并将dmr提供给片段延迟不对称计算元件14; 对第一传输信号应用FEC，确定前向FEC延迟dfecf，并将dfecf提供给路径延迟不对称计算单元16; 对第二传输信号应用FEC，确定反向FEC延迟dfecr，并向路径延迟不对称计算元件18提供dfecr; 根据dmf，dmr，dfecf和dfecr 20计算路径延迟不对称; 以及向第二客户端节点22处的时间协议客户端提供路径延迟不对称。

5. 发明申请

US20120287948A1 CONFIGURATION OF SYNCHRONISATION NETWORK 有权
标题翻译：同步网络的配置
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。

6. 发明授权

US09166681B2 Determining asymmetries in a communication network 有权
标题翻译：确定通信网络中的不对称性
公开(公告)号：US09166681B2
公开(公告)日：2015-10-20
申请号：US13879147
申请日：2011-09-13
申请人： Fabio Cavaliere , Giulio Bottari , Luca Giorgi , Stefano Ruffini
发明人： Fabio Cavaliere , Giulio Bottari , Luca Giorgi , Stefano Ruffini
IPC分类号： H04B10/077 , H04B10/079 , H04B10/07 , H04J3/06 , H04L12/26 , H04J14/02
CPC分类号： H04L43/0864 , H04B10/07 , H04B10/0775 , H04B10/0795 , H04B2210/072 , H04B2210/078 , H04J3/0667 , H04J14/0201 , H04J14/021 , H04J14/0226 , H04J14/0267 , H04J14/0273 , H04J14/0275 , H04Q11/0066 , H04Q2011/0083
摘要： A method for measuring asymmetry in propagation delay of first and second links which connect a first node to a second node of a communication network. The method comprises measuring (101) a round trip delay of the first link. The round trip delay can be measured by transmitting (102) a test signal from the first node to the second node over the first link and receiving a reply to the test signal from the second node over the first link. The method further comprises measuring (105) a round trip delay of the second link. The round trip delay can be measured by transmitting (106) a test signal to the second node over the second link and receiving a reply to the test signal from the second node over the second link. A difference in the propagation delay of the first link with respect to the second link is determined (109) using the measured round trip delays of the first link and the second link.
摘要翻译：一种用于测量将第一节点连接到通信网络的第二节点的第一和第二链路的传播延迟不对称的方法。该方法包括测量（101）第一链路的往返延迟。可以通过在第一链路上将测试信号从第一节点发送（102）到第二节点（102）并通过第一链路接收来自第二节点的测试信号的答复来测量往返延迟。该方法还包括测量（105）第二链路的往返延迟。可以通过在第二链路上向第二节点发送（106）测试信号（106）并通过第二链路从第二节点接收对测试信号的回复来测量往返延迟。使用所测量的第一链路和第二链路的往返延迟来确定第一链路相对于第二链路的传播延迟的差异（109）。

7. 发明授权

US09094142B2 Methods of time sychronisation in communications networks 有权
标题翻译：通信网络中时间同步的方法
公开(公告)号：US09094142B2
公开(公告)日：2015-07-28
申请号：US13985176
申请日：2011-04-27
申请人： Stefano Ruffini , Giulio Bottari
发明人： Stefano Ruffini , Giulio Bottari
IPC分类号： H04B10/00 , H04J3/06 , H04L7/00 , H04L12/26 , H04J14/00 , H04L1/00
CPC分类号： H04J3/0658 , H04J3/065 , H04J3/0667 , H04J14/00 , H04J14/08 , H04J2203/0085 , H04J2203/0089 , H04L1/0061 , H04L1/0083 , H04L7/00 , H04L43/0858
摘要： A method 10 of providing a path delay asymmetry for time synchronization between a master clock at a first client node and a slave clock at a second client node across a server communications network. The method comprises: mapping a first time protocol signal (TPS) carrying master clock time protocol data onto a first transmission signal, determining a forward mapping delay, dmf, and providing dmf to a path delay asymmetry calculation element 12; mapping a second TPS carrying slave clock time protocol data onto a second transmission signal, determining a reverse mapping delay, dmr, and providing the dmr to the patch delay asymmetry calculation element 14; applying FEC to the first transmission signal, determining a forward FEC delay, dfecf, and providing the dfecf to the path delay asymmetry calculation element 16; applying FEC to the second transmission signal, determining a reverse FEC delay, dfecr, and providing dfecr to the path delay asymmetry calculation element 18; calculating a path delay asymmetry in dependence on dmf, dmr, dfecf and dfecr 20; and providing the path delay asymmetry to a time protocol client at the second client node 22.
摘要翻译：提供用于在第一客户端节点处的主时钟与服务器通信网络之间的第二客户机节点处的从时钟之间的时间同步的路径延迟不对称的方法10。该方法包括：将携带主时钟时间协议数据的第一时间协议信号（TPS）映射到第一传输信号上，确定前向映射延迟dmf，并向路径延迟不对称计算元件12提供dmf; 将携带从时钟时间协议数据的第二TPS映射到第二传输信号，确定反向映射延迟dmr，并将dmr提供给片段延迟不对称计算元件14; 对第一传输信号应用FEC，确定前向FEC延迟dfecf，并将dfecf提供给路径延迟不对称计算单元16; 对第二传输信号应用FEC，确定反向FEC延迟dfecr，并向路径延迟不对称计算元件18提供dfecr; 根据dmf，dmr，dfecf和dfecr 20计算路径延迟不对称; 以及向第二客户端节点22处的时间协议客户端提供路径延迟不对称。

8. 发明授权

US09584217B2 Determining properties of an optical communications path in an optical communications network 有权
标题翻译：确定光通信网络中光通信路径的属性
公开(公告)号：US09584217B2
公开(公告)日：2017-02-28
申请号：US14401106
申请日：2012-06-19
申请人： Giulio Bottari , Stefano Ruffini
发明人： Giulio Bottari , Stefano Ruffini
IPC分类号： H04B10/077 , H04B10/2513 , H04J3/06
CPC分类号： H04B10/0775 , H04B10/2513 , H04J3/0661 , H04J3/0697
摘要： A method of determining properties of an optical communications path between a first optical network node (A) and a second optical network node (B) determines, at the second optical network node (B), a time difference between respective first and second optical test signals received on different wavelengths (λ1, λ2) from the first optical network node. The method also determines, at the second optical network node (B), a real-time chromatic dispersion parameter for each of the wavelengths using a respective coherent receiver at the second optical network node. The method can be used to determine length of the path between the nodes (A, B). The method can be used to determine propagation delay between the nodes (A, B), or asymmetry in propagation delay between the nodes (A, B). Where separate paths are used for forward and reverse transmission directions, measurements can be made of each path.
摘要翻译：确定第一光网络节点（A）和第二光网络节点（B）之间的光通信路径的属性的方法在第二光网络节点（B）处确定相应的第一和第二光学测试从第一光网络节点接收的不同波长（λ1，λ2）的信号。该方法还在第二光网络节点（B）处确定在第二光网络节点处使用相应的相干接收机的每个波长的实时色散参数。该方法可用于确定节点（A，B）之间路径的长度。该方法可用于确定节点（A，B）之间的传播延迟，或节点（A，B）之间传播延迟的不对称性。在使用独立路径用于正向和反向传输方向的情况下，可以对每条路径进行测量。

9. 发明授权

US09628259B2 Distributing clock synchronization information within an optical communications network 有权
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.

10. 发明授权

US08929405B2 Method and apparatus for optimizing packet timing transport 有权
标题翻译：用于优化分组定时传输的方法和装置
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。

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