公开(公告)号：US06718141B1

公开(公告)日：2004-04-06

申请号：US09472124

申请日：1999-12-23

申请人： Jim Adrian deVette

发明人： Jim Adrian deVette

IPC分类号： H04B1008

CPC分类号： H04J14/0227 ,  H04B10/0771 ,  H04B2210/071 ,  H04J14/0201 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0284

摘要： Optical networks using wavelength division multiplexing (WDM) techniques require innovative methods of maintaining network connectivity data and for identifying and isolating network faults. The present invention discloses such methods using a signal processor for installation at each node for retrieving upstream connectivity data from an out-of-band signal, updating the data and returning it to the out-of-band signal for use by downstream elements. A central network monitor periodically requests updates from each node of the connectivity data maintained by it in the form of messages transmitted along the out-of-band signal. When the various payload signals carried along the network are modulated with in-band signals carrying data which identifies the source and wavelength of the payload, this data can be combined with the updated connectivity data to identify network faults and raise alarms for transmission along the out-of-band signal to the central network monitor. The central network monitor can use the connectivity data and fault isolation alarms to direct its operations, analysis and maintenance functions. Signal formats for the out-of-band signal and apparatus including the node signal processor and the central network monitor for implementing the disclosed methods are also disclosed.

摘要翻译： 使用波分复用（WDM）技术的光网络需要维护网络连接数据以及识别和隔离网络故障的创新方法。 本发明公开了使用信号处理器来安装在每个节点处的用于从带外信号中检索上游连通性数据，更新数据并将其返回到带外信号供下游元件使用的方法。 中央网络监视器周期性地以其沿着带外信号发送的消息的形式请求由其维护的连接数据的每个节点的更新。 当带有沿着网络传送的各种有效负载信号被用带有标识有效载荷的源和波长的数据的带内信号进行调制时，该数据可以与更新的连接数据组合以识别网络故障，并且提高沿着传输的报警 带通信号到中央网络监视器。 中央网络监视器可以使用连接数据和故障隔离报警来指导其操作，分析和维护功能。 还公开了用于实现所公开方法的带外信号和包括节点信号处理器和中央网络监视器的装置的信号格式。