公开(公告)号：US08155521B2

公开(公告)日：2012-04-10

申请号：US12514977

申请日：2006-12-06

申请人： Hwan-Seok Chung ,  Kwangloon Kim ,  Sang-Soo Lee ,  Sun-Hyok Chang

发明人： Hwan-Seok Chung ,  Kwangloon Kim ,  Sang-Soo Lee ,  Sun-Hyok Chang

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0039 ,  H04Q2011/0052

摘要： Provided are a network node which has a wavelength switching cross-connection function and can thus interconnect paths of a wavelength-division-multiplexed optical signal and convert wavelengths, and an operating method of the network node. Accordingly, it is possible to provide a multi-degree cross-connection system having a simple structure at lower cost by allowing transmission of optical signals supposed not to be added/dropped at a network node without converting them into electrical signals and performing O/E conversion or E/O conversion only on optical signals supposed to be added/dropped at a network node. In addition, it is possible to increase the expandability of networks by regenerating degraded signals and which can effectively utilize bandwidths by grooming low-speed electrical digital hierarchy signals and transmitting them as high-speed optical signals. Moreover, it is possible to increase the availability of network resources by performing wavelength conversion without the need of additional wavelength converters. Furthermore, it is possible to prevent multiplexed optical signals from being degraded by filtering even when the multiplexed optical signals are not demultiplexed into wavelengths. Still furthermore, it is possible to perform a multicast operation on input wavelengths.

摘要翻译： 提供了具有波长切换交叉连接功能并且因此可以互连波分复用光信号的路径并转换波长的网络节点以及网络节点的操作方法。 因此，可以通过允许在网络节点处不被添加/丢弃的光信号的传输而不将它们转换成电信号并执行O / E来提供具有简单结构的多级交叉连接系统，其具有较低的成本 转换或E / O转换仅在光网络节点上被添加/删除的信号上。 此外，可以通过再生劣化信号来增加网络的可扩展性，并且可以通过梳理低速电子数字分层信号并将其作为高速光信号传输来有效地利用带宽。 此外，可以通过执行波长转换来增加网络资源的可用性，而不需要额外的波长转换器。 此外，即使当复用的光信号未被解复用为波长时，也可以防止多路复用的光信号被滤波劣化。 此外，可以对输入波长执行多播操作。

公开(公告)号：US20100027996A1

公开(公告)日：2010-02-04

申请号：US12514977

申请日：2006-12-06

申请人： Hwan-Seok Chung ,  Kwangloon Kim ,  Sang-Soo Lee ,  Sun-Hyok Chang

发明人： Hwan-Seok Chung ,  Kwangloon Kim ,  Sang-Soo Lee ,  Sun-Hyok Chang

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0039 ,  H04Q2011/0052

摘要： Provided are a network node which has a wavelength switching cross-connection function and can thus interconnect paths of a wavelength-division-multiplexed optical signal and convert wavelengths, and an operating method of the network node. Accordingly, it is possible to provide a multi-degree cross-connection system having a simple structure at lower cost by allowing transmission of optical signals supposed not to be added/dropped at a network node without converting them into electrical signals and performing O/E conversion or E/O conversion only on optical signals supposed to be added/dropped at a network node. In addition, it is possible to increase the expandability of networks by regenerating degraded signals and which can effectively utilize bandwidths by grooming low-speed electrical digital hierarchy signals and transmitting them as high-speed optical signals. Moreover, it is possible to increase the availability of network resources by performing wavelength conversion without the need of additional wavelength converters. Furthermore, it is possible to prevent multiplexed optical signals from being degraded by filtering even when the multiplexed optical signals are not demultiplexed into wavelengths. Still furthermore, it is possible to perform a multicast operation on input wavelengths.

摘要翻译： 提供了具有波长切换交叉连接功能并且因此可以互连波分复用光信号的路径并转换波长的网络节点以及网络节点的操作方法。 因此，可以通过允许在网络节点处不被添加/丢弃的光信号的传输而不将它们转换成电信号并执行O / E来提供具有简单结构的多级交叉连接系统，其具有较低的成本 转换或E / O转换仅在光网络节点上被添加/删除的信号上。 此外，可以通过再生劣化信号来增加网络的可扩展性，并且可以通过梳理低速电子数字分层信号并将其作为高速光信号传输来有效地利用带宽。 此外，可以通过执行波长转换来增加网络资源的可用性，而不需要额外的波长转换器。 此外，即使当复用的光信号未被解复用为波长时，也可以防止多路复用的光信号被滤波劣化。 此外，可以对输入波长执行多播操作。