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    Method and Related Network Element Providing Delay Measurement in an Optical Transport Network
    62.
    发明公开
    Method and Related Network Element Providing Delay Measurement in an Optical Transport Network 审中-公开
    Verfahren undzugehörigesNetzwerkelement zurVerzögerungsmessungin einem optischen Transportnetzwerk

    公开(公告)号：EP2600546A1

    公开(公告)日：2013-06-05

    申请号：EP11306605.4

    申请日：2011-12-02

    申请人： Alcatel Lucent

    发明人： Loehr, Juergen ,  Sturm, Wolfram

    IPC分类号： H04J3/06 ,  H04J3/16

    CPC分类号： H04B10/0795 ,  H04J3/0682 ,  H04J3/1652

    摘要： A delay measurement method of a path (P) or path segment through a transport network and a corresponding network nodes (NE1, NE2) for performing the delay measurement are described, which provide a higher precision and lower jitter. An originating network node (NE1) inserts a delay measurement request signal (REQ) into an overhead subfield of a first data unit and transmits the first data unit over the path (P) or path segment to a far-end network node (NE2) as part of framed transport signals. The far-end network node (NE2), upon detection of the delay measurement request (REQ), inserts a delay measurement reply signal (REP) into an overhead subfield of a second data unit and transmits the second data unit back to the originating network node (NE1) using framed transport signals in reverse direction. The originating network node (NE1) determines a time difference between insertion of the delay measurement request signal (REQ) and receipt of the delay measurement reply signal (REP). The far-end network node (NE2) further determines an insertion time value indicative of a time difference (t1, t2, t3) between receipt of the delay measurement request signal (REQ) and insertion of the delay measurement reply signal (REP) in reverse direction and communicates the insertion time value back to the originating network node (NE1). The originating network node (NE1) then determines a delay value for the path (P) or path segment from the determined response time difference and the received insertion time value.

    摘要翻译： 描述了通过传输网络的路径（P）或路径段的延迟测量方法和用于执行延迟测量的相应网络节点（NE1，NE2），其提供更高的精度和更低的抖动。 始发网络节点（NE1）将延迟测量请求信号（REQ）插入到第一数据单元的开销子字段中，并将路径（P）或路径段上的第一数据单元发送到远端网络节点（NE2） 作为框架传输信号的一部分。 远端网络节点（NE2）在检测到延迟测量请求（REQ）后，将延迟测量应答信号（REP）插入到第二数据单元的开销子字段中，并将第二数据单元发回原始网络 节点（NE1）使用成帧的传输信号反向。 始发网络节点（NE1）确定延迟测量请求信号（REQ）的插入和延迟测量应答信号（REP）的接收之间的时间差。 远端网络节点（NE2）进一步确定指示延迟测量请求信号（REQ）的接收和延迟测量应答信号（REP）的插入之间的时间差（t1，t2，t3）的插入时间值 将插入时间值传回给始发网络节点（NE1）。 然后，起始网络节点（NE1）根据确定的响应时间差和接收到的插入时间值确定路径（P）或路径段的延迟值。

    Network node for an optical transport network
    65.
    发明公开
    Network node for an optical transport network 有权
    光传输网络的网络节点

    公开(公告)号：EP2469887A1

    公开(公告)日：2012-06-27

    申请号：EP11305403.5

    申请日：2011-04-07

    申请人： Alcatel Lucent

    发明人： Yi, Xiaobo ,  Cheng, Xuming ,  Hu, Hou Xuan ,  Li, Yangjun ,  Zhang, Xiaohong

    IPC分类号： H04Q11/04 ,  H04Q11/06 ,  H04J3/16

    CPC分类号： H04Q11/0001 ,  H04J3/1652 ,  H04J3/1694 ,  H04J2203/0012 ,  H04L49/10 ,  H04L49/15 ,  H04Q11/0478 ,  H04Q11/06 ,  H04Q2213/1301

    摘要： In order to provide a network element which is well suited for the access and aggregation network, and allows switching and aggregation at ODU0 and ODUflex granularity; a network node for an optical transport network is disclosed, which has a signal input for receiving a multiplexed transport signal carrying a number of n timeslots of a fixed size data capacity, a demultiplexer for demultiplexing the received signal into a number of m > 1 sub-signals, each sub-signal carrying a fraction of n / m of said timeslots, one or more space switch modules for configurably switching said sub-signals, and a multiplexer receiving sub-signals from said one or more space switch modules; for multiplexing timeslots from said sub-signals into an outgoing multiplexed transport signal carrying n of said timeslots. The multiplexer is connected to the one or more switch modules over a number of l > m interconnections and receives from said one or more switch modules up to I sub-signals. Moreover, the multiplexer can be configured to select the n timeslots for the outgoing multiplexed transport signal from the up to I sub-signals.

    Device and method for switching data traffic in a digital transmission network
    67.
    发明公开
    Device and method for switching data traffic in a digital transmission network 有权
    设备和方法在数字传输网络的数据业务的转换

    公开(公告)号：EP2437442A1

    公开(公告)日：2012-04-04

    申请号：EP10306069.5

    申请日：2010-09-30

    申请人： Alcatel Lucent

    发明人： Gemelli, Riccardo ,  Ronchetti, Luigi ,  Paparella, Andrea ,  Sestito, Vincenzo

    IPC分类号： H04L12/56

    CPC分类号： H04L49/30 ,  H04L49/1523 ,  H04L49/3072 ,  H04L49/606

    摘要： A network element for a digital transmission network is proposed. The network element contains two switching matrices for switching data cells, as well as ingress ports that receive TDM traffic flow and packet traffic flow and segment the traffic flows into cells. A control system for controlling the configuration of the ingress ports and the switching matrices controls the ingress ports, in case of no failure of the switching matrices, to forward the TDM traffic flows to both switching matrices and to split the packet traffic flow over the two switching matrices.

    摘要翻译： 用于数字传输网络的网络元件被提议。 网络元素包含用于切换数据单元，以及入口端口确实收到TDM业务流和分组业务流和所述业务流进细胞段上的两个开关矩阵。 用于控制所述入口端口和所述开关矩阵的结构的控制系统控制的进入端口，在没有切换矩阵失效的情况下，转发TDM业务流到两个开关矩阵和分割在两个分组业务流 开关矩阵。

    Method of enabling a packet loss measurement in a packet transport network
    68.
    发明公开
    Method of enabling a packet loss measurement in a packet transport network 有权
    在einem Pakettransportnetzwerk的Verfahren zur Aktivierung der Paketverlustmessung

    公开(公告)号：EP2429127A1

    公开(公告)日：2012-03-14

    申请号：EP10305975.4

    申请日：2010-09-10

    申请人： Alcatel Lucent

    发明人： Addeo, Christian ,  Busi, Italo ,  Bobbo, Gianluca

    IPC分类号： H04L12/26 ,  H04L12/56

    CPC分类号： H04L43/0829 ,  H04L49/3009 ,  H04L2012/5624

    摘要： Proposed is a method of enabling a packet loss measurement in a network. Via a group of user ports data packets containing a same source address and a same destination address are received. A link aggregation of the group of user ports is performed. At a network port, received data packets are transmitted to a far end network edge node. A number of transmitted data packets is determined, and also for each of the user ports a number of data packets lost internally is determined. At the network port, a corrected number of transmitted data packets is indicated to the far end network edge node as the sum of the determined number of transmitted data packets the overall number of data packets lost internally.

    摘要翻译： 提出了一种在网络中实现分组丢失测量的方法。 通过一组用户端口接收包含相同源地址和相同目的地址的数据包。 执行用户端口组的链路聚合。 在网络端口，接收的数据分组被发送到远端网络边缘节点。 确定多个发送的数据分组，并且对于每个用户端口，确定内部丢失的数个数据分组。 在网络端口，向远端网络边缘节点指示已发送数据分组的校正次数，作为确定的发送数据分组数量与内部数据丢包总数之和的总和。

    Method and apparatus for restoring a connection through a provider network upon request
    69.
    发明公开
    Method and apparatus for restoring a connection through a provider network upon request 有权
    根据请求通过提供商网络恢复连接的方法和设备

    公开(公告)号：EP2426858A1

    公开(公告)日：2012-03-07

    申请号：EP10305938.2

    申请日：2010-09-01

    申请人： Alcatel Lucent

    发明人： Grammel, Gert ,  Levrau, Lieven

    IPC分类号： H04L12/24

    CPC分类号： G06F11/1415 ,  H04L41/0668 ,  H04L43/0811

    摘要： A method and related apparatus are provided for restoring a connection through a provider network (PN). In particular, a connection is established along a path (P1) through the provider network (PN) for the transport of client traffic between two client network nodes (CR1, CR2) of a client network (CD1, CD2). Any restoration service for this connection is deactivated. However, when a failure (F1) is detected along the path (P1) which affects the connection, a path search is performed anyhow to determine a projected restoration path (P2) through the provider network (PN) available to restore said failed connection. In the case that the path search was successful and a projected restoration path (P2) was found, the availability of the projected restoration path (P2) is communicated (MS1, MS2) to the client network (CD 1, CD2). The client can now decide whether to accept a temporary service upgrade to restoration service or not. Only after receipt of a confirmation (CM1, CM2) from said client network (CD1, CD2), a path restoration is performed to restore the failed connection over the projected restoration path (P2).

    摘要翻译： 提供了一种用于通过提供商网络（PN）来恢复连接的方法和相关设备。 具体地，沿着通过提供商网络（PN）的路径（P1）建立连接，以在客户端网络（CD1，CD2）的两个客户端网络节点（CR1，CR2）之间传输客户端业务。 此连接的任何恢复服务都将停用。 然而，当沿着影响连接的路径（P1）检测到故障（F1）时，无论如何执行路径搜索以确定通过可用于恢复所述失败连接的提供商网络（PN）的预计恢复路径（P2）。 在路径搜索成功并且找到预计恢复路径（P2）的情况下，将预计恢复路径（P2）的可用性传送给客户端网络（CD1，CD2）（MS1，MS2）。 客户现在可以决定是否接受临时服务升级来恢复服务。 仅在从所述客户网络（CD1，CD2）接收到确认（CM1，CM2）之后，才执行路径恢复，以恢复所述预计恢复路径（P2）上的失败连接。