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    METHODS AND DEVICE FOR NETWORK TOMOGRAPHY
    1.
    发明公开
    METHODS AND DEVICE FOR NETWORK TOMOGRAPHY 有权
    用于网络断层摄影术的方法和设备

    公开(公告)号：EP3231139A1

    公开(公告)日：2017-10-18

    申请号：EP14811868.0

    申请日：2014-12-11

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： UBALDI, Fabio ,  PULERI, Marzio ,  PEPE, Teresa

    IPC分类号： H04L12/26

    CPC分类号： H04L41/12 ,  H04L43/04 ,  H04L43/0847 ,  H04L43/087 ,  H04L43/106 ,  H04L43/12

    摘要： A method of monitoring performance of a network using network tomography comprises obtaining (102) information indicative of topology of the network and computing (104) a plurality of paths for monitoring the network. Further the method comprises instructing (110) source nodes of the computed paths to send probing packets towards destination nodes of the computed paths, wherein said probing packets undergo segment routing in said network and instructing (114) the destination nodes of the computed paths to carry out network performance measurements based on probing packets received by the destination nodes. Finally the method comprises receiving (116) the performance measurements from the destination nodes and inferring (118) information about performance of nodes in the network using network tomography, wherein the inference process includes correlating the performance measurements of the computed paths.

    摘要翻译： 一种使用网络层析成像来监视网络的性能的方法包括获得（102）指示网络的拓扑的信息并且计算（104）用于监视网络的多个路径。 此外，该方法包括指示（110）所计算的路径的源节点向所计算的路径的目的地节点发送探测分组，其中所述探测分组在所述网络中经历分段路由并且指示（114）计算出的路径的目的地节点携带 基于探测由目的地节点接收的分组来进行网络性能测量。 最后，该方法包括从目的地节点接收（116）性能测量并且使用网络断层摄影术推断（118）关于网络中的节点的性能的信息，其中推断过程包括关联计算的路径的性能测量。

    APPARATUS AND METHOD FOR A COMMUNICATION NETWORK
    3.
    发明公开
    APPARATUS AND METHOD FOR A COMMUNICATION NETWORK 审中-公开
    装置和方法用于通信网络

    公开(公告)号：EP2748985A1

    公开(公告)日：2014-07-02

    申请号：EP11755049.1

    申请日：2011-09-06

    申请人： Telefonaktiebolaget LM Ericsson (PUBL)

    发明人： IOVANNA, Paola ,  ZEMA, Cristiano ,  UBALDI, Fabio

    IPC分类号： H04L12/70

    CPC分类号： H04L45/28 ,  H04L45/22 ,  H04L45/50 ,  H04L45/64

    摘要： A node 800 of a multi-layer communication is capable of routing a message signal via one or more different layers (for example a PSC layer, TDM layer, LSC layer) in the multi-layer communication network. The node 800 comprises a first interface 801 for receiving a path message 803 containing routing information for routing an associated message signal through the multi-layer communication network. One or more second interfaces 805i to 805N are provided for transmitting a message signal to one or more respective layers in the multi-layer communication network. A processing unit 807 is adapted to determine if the path message 803 contains protection information 40 indicating that protection switching is to be performed in one or more different layers of the multi-layer communication network, and if so, establish a protection switching mechanism in the one or more different layers using the protection information 40 provided in the path message 803.

    METHODS AND DEVICE FOR NETWORK TOMOGRAPHY
    6.
    发明授权
    METHODS AND DEVICE FOR NETWORK TOMOGRAPHY 有权
    用于网络断层摄影术的方法和设备

    公开(公告)号：EP3231139B1

    公开(公告)日：2018-02-21

    申请号：EP14811868.0

    申请日：2014-12-11

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： UBALDI, Fabio ,  PULERI, Marzio ,  PEPE, Teresa

    IPC分类号： H04L12/26

    CPC分类号： H04L41/12 ,  H04L43/04 ,  H04L43/0847 ,  H04L43/087 ,  H04L43/106 ,  H04L43/12

    摘要： A method of monitoring performance of a network using network tomography comprises obtaining (102) information indicative of topology of the network and computing (104) a plurality of paths for monitoring the network. Further the method comprises instructing (110) source nodes of the computed paths to send probing packets towards destination nodes of the computed paths, wherein said probing packets undergo segment routing in said network and instructing (114) the destination nodes of the computed paths to carry out network performance measurements based on probing packets received by the destination nodes. Finally the method comprises receiving (116) the performance measurements from the destination nodes and inferring (118) information about performance of nodes in the network using network tomography, wherein the inference process includes correlating the performance measurements of the computed paths.

    PATH COMPUTATION OF WORKING AND RECOVERY PATHS
    9.
    发明公开
    PATH COMPUTATION OF WORKING AND RECOVERY PATHS 审中-公开
    路径计算处理和因恢复

    公开(公告)号：EP2681879A1

    公开(公告)日：2014-01-08

    申请号：EP11716394.9

    申请日：2011-04-15

    申请人： Telefonaktiebolaget LM Ericsson (PUBL)

    发明人： IOVANNA, Paola ,  BOTTARI, Guilio ,  UBALDI, Fabio

    IPC分类号： H04L12/56

    CPC分类号： H04L41/0668 ,  H04L45/22 ,  H04L45/28 ,  H04L45/302 ,  H04L45/44

    摘要： Computing working paths and recovery paths in a telecommunications network having nodes (60, 61) capable of supporting different recovery schemes, is based on traffic demands having an indication of a desired recovery service level, for that demand. A path computation is carried out (120) to select a working path through the network for each of the traffic demands and to select which of the different recovery schemes to use according to the service level. The selected working paths and their associated recovery schemes are then set up in the network. By leaving the selection of the recovery scheme to the path computation stage, network resources can be used more efficiently, and operators can specify resiliency in terms of needs rather than in terms of the technology of the network. Thus operators can be insulated from the detailed knowledge of the network.