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    Planning of optical connections in a WDM optical network
    5.
    发明公开
    Planning of optical connections in a WDM optical network 审中-公开
    在einem optischen WDM-Netzwerk的Planung von optischen Verbindungen

    公开(公告)号：EP2860907A1

    公开(公告)日：2015-04-15

    申请号：EP13306388.3

    申请日：2013-10-08

    Applicant: ALCATEL LUCENT

    Inventor： Bisson, Arnaud ,  Morea, Annalisa

    IPC: H04L12/24 ,  H04J14/02

    CPC classification number: H04Q11/0062 ,  H04J14/0227 ,  H04J14/0254 ,  H04J14/0267 ,  H04J14/0271 ,  H04L41/0896 ,  H04L41/145 ,  H04Q2011/0079

    Abstract: A method for planning a plurality of optical connections as a function of a plurality of traffic demand (dl-d3) comprising:
    in a routing step:
    allocating a loopless network path to each traffic demand,
    allocating each traffic demand (dl-d3) to a candidate optical connection (c1-c3) or chain of candidate optical connections selected so as to carry the capacity of the traffic demand along the loopless network path allocated to the traffic demand,
    and in an optimization step:

    defining a reduced set of candidate optical connections (c2-c3) by withdrawing the candidate optical connection to be withdrawn (cl),
    for each traffic demand (dl) allocated to the candidate optical connection to be withdrawn,
    determining a candidate optical connection or a chain of candidate optical connections to be re-used among the reduced set of candidate optical connections (c2-c3), and
    re-allocating the traffic demand (dl) to the candidate optical connection or chain of candidate optical connections to be re-used.

    Abstract translation: 一种用于根据多个业务需求（dl-d3）规划多个光学连接的方法，包括：在路由步骤中：向每个业务需求分配无广告网络路径，将每个业务量需求（dl-d3）分配给 选择的候选光连接（c1-c3）或候选光连接链，以便沿着分配给业务需求的无宽网络路径承载业务需求的容量，并且在优化步骤中：定义一组缩减的候选光 连接（c2-c3），通过撤销要撤回的候选光连接（c1），分配给要撤销的候选光连接的每个业务需求量（d1），确定候选光连接或候选光连接链为 在候选光连接的缩减集合（c2-c3）中重新使用，并且将候选光连接的候选光连接或链路重新分配业务需求量（dl）成为重新使用 编辑。

    Determination device and determination method
    6.
    发明公开
    Determination device and determination method 审中-公开
    Bestimmungsvorrichtung und Bestimmungsverfahren

    公开(公告)号：EP2757716A2

    公开(公告)日：2014-07-23

    申请号：EP13198026.0

    申请日：2013-12-18

    Applicant: FUJITSU LIMITED

    Inventor： Shinohara, Haruka ,  Noheji, Kiyotoshi ,  Miyashita, Takuya

    IPC: H04J14/02

    CPC classification number: H04J14/0268 ,  H04B10/038 ,  H04J14/0257 ,  H04J14/0267 ,  H04J14/0271 ,  H04J14/0275 ,  H04Q2011/0081

    Abstract: A determination device for an optical wavelength division multiplex communication system configured to set each of different paths each of which is formed by connection of spans each of which is a zone between two adjacent transmission devices, among transmission devices forming a communication network, in the communication network, or a single span in the communication network, for the corresponding one of different wavelengths, and configured to transmit an optical signal of each of the wavelengths via the corresponding path set to the wavelength, the device comprising: determination means for determining whether an optical signal of at least one of the wavelengths is transmittable only to a path, among newly formed paths, for which the number of spans forming the path is equal to or less than a predetermined upper-limit number, in order to transmit one or more optical signals of one or more wavelengths among the wavelengths.

    Abstract translation: 一种用于光波分复用通信系统的确定装置，被配置为在所述通信中，在形成通信网络的传输设备之间设置每个不同的路径，每个不同的路径通过跨越两个相邻传输设备之间的区域的跨接形成 网络或通信网络中的单个跨度，用于相应的不同波长的一个，并且被配置为经由设置为波长的相应路径来发送每个波长的光信号，该设备包括：确定装置，用于确定是否 至少一个波长的光信号可以仅在形成路径的跨度数量等于或小于预定上限数量的新形成的路径中的路径上传送，以便传输一个或多个 波长中的一个或多个波长的光信号。

    METHOD AND APPARATUS FOR DETERMINING AN OPTICAL SIGNAL-TO-NOISE RATIO (OSNR) PENALTY
    7.
    发明公开
    METHOD AND APPARATUS FOR DETERMINING AN OPTICAL SIGNAL-TO-NOISE RATIO (OSNR) PENALTY 有权
    用于确定OSNR注入的方法和设备

    公开(公告)号：EP2569879A4

    公开(公告)日：2013-09-18

    申请号：EP11833582

    申请日：2011-07-27

    Applicant: HUAWEI TECH CO LTD

    Inventor： YE YABIN ,  WU TONG ,  ZHANG SEN

    IPC: H04B10/079

    CPC classification number: H04B10/07953 ,  H04J14/0271

    Abstract: A method for determining an optical signal-to-noise ratio penalty as a measure for a quality of an optical signal transmitted via an optical link between a source optical node and a destination optical node in an optical network, the method includes collecting information of the optical link; determining a configuration parameter Pconf of the optical link based on the information of the optical link; adjusting the configuration parameter Pconf to an adjusted configuration parameter P′conf according to linear impairments in the optical link; and determining the optical signal-to-noise ratio penalty based on a non-linear function of the adjusted configuration parameter P′conf, the non-linear function accounting for non-linear impairments in the optical link.

    Abstract translation: 一种用于确定光信噪比损失的方法，用作通过光网络中的源光节点和目的地光节点之间的光链路传输的光信号的质量的量度，所述方法包括： 光链路 基于所述光链路的信息确定所述光链路的配置参数Pconf; 根据光链路中的线性损伤将配置参数Pconf调整到经调整的配置参数P'conf; 以及基于所调整的配置参数P'conf的非线性函数来确定所述光信噪比损失，所述非线性函数考虑所述光链路中的非线性损伤。

    SYSTEM AND METHOD FOR IMPAIRMENT-AWARE ROUTING AND WAVELENGTH ASSIGNMENT IN WAVELENGTH SWITCHED OPTICAL NETWORKS
    8.
    发明公开
    SYSTEM AND METHOD FOR IMPAIRMENT-AWARE ROUTING AND WAVELENGTH ASSIGNMENT IN WAVELENGTH SWITCHED OPTICAL NETWORKS 有权
    系统和方法对波长障碍物感知路由和波长分配交换光网络

    公开(公告)号：EP2351264A4

    公开(公告)日：2012-10-03

    申请号：EP10738214

    申请日：2010-02-04

    Applicant: HUAWEI TECH CO LTD

    Inventor： YOUNG LEE ,  GREG BERNSTEIN

    IPC: H04B10/12 ,  H04J14/02 ,  H04Q11/00

    CPC classification number: H04J14/0267 ,  H04J14/0256 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0269 ,  H04J14/0271 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0086

    Abstract: An apparatus comprising a path computation element (PCE) configured for at least partial impairment aware routing and wavelength assignment (RWA) and to communicate with a path computation client (PCC) based on a PCE protocol (PCEP) that supports path routing, wavelength assignment (WA), and impairment validation (IV). Also disclosed is a network component comprising at least one processor configured to implement a method comprising establishing a PCEP session with a PCC, receiving path computation information comprising RWA information and constraints from the PCC, establishing impairment aware RWA (IA-RWA) based on the path computation information and a private impairment information for a vendor's equipment, and sending a path and an assigned wavelength based on the IA-RWA to the PCC. Disclosed is a method comprising establishing impairment aware routing and wavelength assignment for a plurality of network elements (NEs) in an optical network using routing and combined WA and IV.

    Abstract translation: 包括被配置为一个路径计算元件（PCE）的装置至少部分损伤感知路由和波长分配（RWA）和与基于PCE协议（PCEP）做了路径计算客户端（PCC）进行通信支持路径路由，波长分配 （WA），和损伤确认（IV）。 所以游离缺失盘是网络组件包括被配置成实现包括建立与PCC一个PCEP会话的方法，在接收路径计算信息包括从所述PCC RWA信息和约束，建立减值至少一个处理器基于所述感知RWA（IA-RWA） 路径计算信息和供应商的设备的私人损伤信息，和发送路径，并基于该IA-RWA到PCC分配的波长。 本发明公开了包括使用路由建立损伤感知路由和波长分配在网络元件（NES）的多个以光学网络中的方法和组合WA和IV。

    ROUTE SEARCH AND WAVELENGTH ALLOCATION METHOD IN OPTICAL NETWORK AND DEVICE THEREOF
    10.
    发明公开
    ROUTE SEARCH AND WAVELENGTH ALLOCATION METHOD IN OPTICAL NETWORK AND DEVICE THEREOF 审中-公开
    路线搜索和波长分配方法在光网络及其装置

    公开(公告)号：EP2461629A1

    公开(公告)日：2012-06-06

    申请号：EP10813281.2

    申请日：2010-05-27

    Applicant: ZTE Corporation

    Inventor： ZHAO, Wei

    IPC: H04W40/00 ,  H04L12/56 ,  H04J14/02

    CPC classification number: H04J14/0257 ,  H04J14/0212 ,  H04J14/0267 ,  H04J14/0268 ,  H04J14/0271 ,  H04J14/0293 ,  H04L45/62

    Abstract: The present invention provides a method and device for routing and wavelength assignment in an optical network. The method comprises: a topology step in which a topology network of the optical network is obtained; a route calculation step in which at least one route in the topology network is calculated, a first node and a last node of the route being predetermined, and the at least one route being part of all routes from the first node to the last node; and a wavelength assignment determination step in which for each node on the route, it is determined whether link attribute information of the node meets a predetermined constraint condition, if the predetermined constraint condition is met, the route is selected as a working route, and the method ends; if the predetermined constraint condition is not met, the method returns to the route calculation step. In the present invention, after a route that meets the predetermined constraint condition is calculated, whether the route meets the wavelength assignment is determined, instead of performing the wavelength assignment at one time after a plurality of routes are calculated, thus increasing the hit rate of the available routes and reducing data amount generated by route calculation.

    Abstract translation: 本发明提供一种在光网络上进行路由和波长分配的方法和设备。 该方法包括：拓扑步骤，其中所述光网络的拓扑网络获得; 路由计算步骤，其中所述拓扑网络中的至少一个的路由计算，一个第一节点和路径的负载节点预先确定，并且所述至少一个路由是从所述第一节点到所述负载节点的所有路由的一部分; 并且其中一个波长分配判定步骤，用于在路径上的每个节点，它是确定性的开采无论链路属性的节点的信息满足预定约束条件下，如果预定约束条件被满足时，所述路线被选择作为工作路由，并且 方法结束; 如果预定约束条件不满足，则该方法返回到路线计算步骤。 在本发明中，路线之后确实满足预定约束条件计算，无论路线满足波长分配被确定性开采，而不是路由的多元性之后执行一次的波长分配计算，从而增加速率的命中 通过路由计算所产生的可用的路线和减少数据量。

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