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    • 3. 发明授权
    • Multidrop control network commonly used for carrying network management
signals and topology reconfiguration signals
    • 多点控制网络通常用于承载网络管理信号和拓扑重构信号
    • US5130974A
    • 1992-07-14
    • US501804
    • 1990-03-30
    • Hajime KawamuraKeisuke Kuroyanagi
    • Hajime KawamuraKeisuke Kuroyanagi
    • H04L29/14H04J3/08H04L12/24
    • H04L41/0816H04J3/085H04L41/0677
    • A data communication system comprises a network management center and switching nodes which are interconnected by regular and spare routes. Each of the regular and spare routes comprises data channels and a control chnanel, the data channels of the regular routes forming a data network for carrying signals to and from user terminals and the control channel of each regular or spare route is connected to the control channels of other regular or spare routes to form a control network of multidrop structure for carrying a network management signal from the center to the nodes as well as network response signals from the nodes to the center. Each of the nodes transmits a request signal through the control network in the event of a line fault in the transmission lines to request permission to establish a new regular route to an adjacent node and transmits a grant signal through the control network in response to receipt of a request signal from an adjacent node indicating that the request is granted if an alternate route is available. The control network is dynamically reconfigured in accordance with the presence and absence of the request signal and the grant signal received from adjacent nodes.
    • 数据通信系统包括通过常规和备用路由互连的网络管理中心和交换节点。 常规路由和备用路由中的每一条包括数据信道和控制信道,形成用于向用户终端和从用户终端传送信号的数据网络的常规路由的数据信道和每个常规或备用路由的控制信道连接到控制信道 形成其他常规或备用路由,形成多中心结构的控制网络,用于承载中心到节点的网络管理信号,以及从节点到中心的网络响应信号。 每个节点在传输线中发生线路故障的情况下通过控制网络发送请求信号,以请求建立到相邻节点的新规则路由的许可,并响应于接收到的信息而通过控制网络发送授权信号 来自相邻节点的请求信号,指示如果备用路由可用则该请求被授权。 控制网络根据请求信号的存在和不存在以及从相邻节点接收到的授权信号进行动态重新配置。