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1. 发明申请

US20150304066A1 DISTRIBUTING PATH DELAY DATA IN A CONNECTION-ORIENTED COMMUNICATIONS NETWORK 审中-公开
标题翻译：在面向连接的通信网络中分配路径延迟数据
公开(公告)号：US20150304066A1
公开(公告)日：2015-10-22
申请号：US14422698
申请日：2012-08-22
申请人： Enrico Dutti , Riccardo Ceccatelli , Stefano Ruffini
发明人： Enrico Dutti , Riccardo Ceccatelli , Stefano Ruffini
IPC分类号： H04J14/08 , H04L12/721 , H04B10/27 , H04L12/26 , H04J3/06
CPC分类号： H04J14/08 , H04B10/27 , H04J3/0647 , H04L43/0858 , H04L43/0864 , H04L45/12
摘要： A connection-oriented communications network comprises a plurality of interconnected nodes. A traffic path can be set up across the network. Path delay data is obtained for the traffic path by using control plane signalling messages (e.g. a Resource Reservation Protocol-Traffic Engineering, RSVP-TE signalling message) between nodes of the traffic path. The path delay data can be path delay asymmetry data indicative of an asymmetry in path delay between a forward transmission direction and a reverse transmission direction of the traffic path. Each intermediate node along the traffic path can form a signalling message for forwarding to the downstream node which includes one or more values of path delay incurred by that node, or an accumulated path delay value. The path delay can result from one or more of mapping delay, Forward Error Correction (FEC) coding and propagation delay.
摘要翻译：面向连接的通信网络包括多个互连节点。可以通过网络设置流量路径。通过在业务路径的节点之间使用控制平面信令消息（例如，资源预留协议 - 流量工程，RSVP-TE信令消息），为业务路径获得路径延迟数据。路径延迟数据可以是表示路径延迟在交通路径的前向传输方向和反向传输方向之间的不对称性的路径延迟不对称数据。沿着业务路径的每个中间节点可以形成用于转发到下游节点的信令消息，其包括由该节点引起的路径延迟的一个或多个值或累积的路径延迟值。路径延迟可以由映射延迟，前向纠错（FEC）编码和传播延迟中的一个或多个导致。

2. 发明授权

US10075258B2 Distributing path delay data in a connection-oriented communications network 有权
公开(公告)号：US10075258B2
公开(公告)日：2018-09-11
申请号：US14422698
申请日：2012-08-22
申请人： Enrico Dutti , Riccardo Ceccatelli , Stefano Ruffini
发明人： Enrico Dutti , Riccardo Ceccatelli , Stefano Ruffini
IPC分类号： H04J14/08 , H04J3/06 , H04L12/26 , H04B10/27 , H04L12/721
CPC分类号： H04J14/08 , H04B10/27 , H04J3/0647 , H04L43/0858 , H04L43/0864 , H04L45/12
摘要： A connection-oriented communications network comprises a plurality of interconnected nodes. A traffic path can be set up across the network. Path delay data is obtained for the traffic path by using control plane signalling messages (e.g. a Resource Reservation Protocol-Traffic Engineering, RSVP-TE signalling message) between nodes of the traffic path. The path delay data can be path delay asymmetry data indicative of an asymmetry in path delay between a forward transmission direction and a reverse transmission direction of the traffic path. Each intermediate node along the traffic path can form a signalling message for forwarding to the downstream node which includes one or more values of path delay incurred by that node, or an accumulated path delay value. The path delay can result from one or more of mapping delay, Forward Error Correction (FEC) coding and propagation delay.

3. 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.

4. 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）。

5. 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。

6. 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。

7. 发明申请

US20130145041A1 Optimizing Timing Packet Transport 审中-公开
标题翻译：优化定时包传输
公开(公告)号：US20130145041A1
公开(公告)日：2013-06-06
申请号：US13696304
申请日：2010-08-31
申请人： Stefano Ruffini , Per-Erik Eriksson
发明人： Stefano Ruffini , Per-Erik Eriksson
IPC分类号： H04L12/56
CPC分类号： H04J3/0697 , H04J3/0667 , H04J3/0673 , H04L47/28
摘要： The invention relates to networking in general and in particular to an improved packet timing transport mechanism. The present invention provides a method of optimizing timing packet transport in a network comprising a first network node connected to a second network node. The method comprises forwarding a timing packet received at the first network node to the second network node, and transmitting the timing packet from the second network node a pre-determined duration K after receiving the timing packet at the first network node.
摘要翻译：本发明一般涉及网络，特别涉及改进的分组定时传送机制。本发明提供一种在网络中优化定时分组传输的方法，包括连接到第二网络节点的第一网络节点。该方法包括将在第一网络节点处接收到的定时分组转发到第二网络节点，以及在第一网络节点接收到定时分组之后，从第二网络节点传送定时分组预定的持续时间K.

8. 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.

9. 发明授权

US08842994B2 Distributing clock synchronization information within an optical communications network 有权
标题翻译：在光通信网络内分发时钟同步信息
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。

10. 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。

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