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    • 66. 发明申请
    • AN OPTICAL COMMUNICATION NETWORK
    • 光通信网络
    • WO2007096852A1
    • 2007-08-30
    • PCT/IE2007/000024
    • 2007-02-21
    • UNIVERSITY COLLEGE CORK - NATIONAL UNIVERSITY OF IRELAND, CORKCOTTER, David
    • COTTER, David
    • H04B10/00H04Q11/00
    • H04Q11/0005H04Q2011/0016H04Q2011/0024H04Q2011/0033H04Q2011/0039H04Q2011/0052H04Q2011/0064H04Q2011/0073H04Q2011/009
    • An optical interconnection network has a plurality of network nodes (70) interconnected by optical links (76-79). The network nodes (70) each receive a global clock and switch repeatedly with a fixed periodicity their routing states according to the global clock. Each network node (70) selects a time slot, a wavelength, and an initial optical link for transmitting a packet in dependence upon the desired path for the packet through the network, and outputs the packet in the selected time slot, wavelength and link. The network topology is a torus of the Manhattan street type. Each network node (70) comprises a plurality of channel nodes (73 a) for each link, a wavelength division demultiplexer (72a), a combiner (74a), and an optical space switch (75). The optical space switch (75) has a 2x2 configuration. The optical space switch (75) has a wavelength converter (42) per link feeding a passive wavelength routing device (41).
    • 光互连网络具有通过光链路(76-79)互连的多个网络节点(70)。 网络节点(70)各自接收全局时钟并以固定周期重复地切换其根据全局时钟的路由状态。 每个网络节点(70)根据通过网络的分组的期望路径来选择时隙,波长和用于发送分组的初始光链路,并且在所选择的时隙,波长和链路中输出分组。 网络拓扑结构是曼哈顿街道类型的环面。 每个网络节点(70)包括用于每个链路的多个信道节点(73a),波分多路分解器(72a),组合器(74a)和光学空间交换机(75)。 光学空间开关(75)具有2x2配置。 光学空间开关(75)具有每个馈送无源波长路由设备(41)的每个链路的波长转换器(42)。
    • 69. 发明申请
    • OPTICAL NETWORK TOPOLOGY DATABASES AND OPTICAL NETWORK OPERATIONS
    • 光网络拓扑数据库和光网络操作
    • WO2005001620A3
    • 2005-04-14
    • PCT/US2004017845
    • 2004-06-04
    • INTELLAMBDA SYSTEM INCHOANG KHOI NHUSADANANDA SANTOSH KUMAR
    • HOANG KHOI NHUSADANANDA SANTOSH KUMAR
    • H04L12/56H04Q11/00H04J14/00
    • H04L45/28H04L43/0811H04L45/02H04L45/12H04L45/22H04L45/62H04Q2011/0086H04Q2011/009
    • A number of wavelength division multiplexing (WDM) access nodes employ a distributed search based scheme to build network topology databases based on a set of connectivity constraints (1230). A set of one or more connectivity constraints that include quality or service (QoS) based criteria are applied on a physical network topology of a WDM optical network to divide that optical network into separate service levels (910) whose topologies (920) are determined for each of the service levels. A number of WDM access nodes of an optical network employ a source based scheme to establish communication paths (1145). Each of these access nodes stores a set of one or more network topology databases based on a set of connectivity constraints. Each of these nodes employs a messaging scheme to propagate notification of changes in the optical network to other nodes to maintain their databases.
    • 许多波分多路复用(WDM)接入节点采用基于分布式搜索的方案,以基于一组连通性限制来构建网络拓扑数据库(1230)。 将包含基于质量或服务(QoS)的准则的一个或多个连接约束集合应用于WDM光网络的物理网络拓扑,以将该光网络划分为单独的服务级别(910),其中拓扑(920)被确定为 每个服务级别。 光网络的多个WDM接入节点采用基于源的方案来建立通信路径(1145)。 这些访问节点中的每一个基于一组连接约束存储一组一个或多个网络拓扑数据库。 这些节点中的每一个采用消息传递方案将光网络中的变化通知传播到其他节点来维护其数据库。