Signal processing method and node in optical burst network

Abstract

The invention provides a signal processing method and node in an optical burst network. The method includes: the receiving node determines whether the first optical burst OB signal on the working path is normal; when the receiving node determines that the second part of the OB signal in the first OB signal is abnormal, obtains the The first part of the OB signal except the second part of the OB signal, and obtain the second part of the OB signal from the second part of the OB signal on the protection path, where the content of the first part of the OB signal and the content of the second part of the OB signal are The same; the receiving node synchronizes the second part of the OB signal obtained from the second OB signal with the first part of the OB signal; the receiving node synchronizes the second part of the OB signal obtained from the second OB signal with the first part of the OB signal Merging is done in order to get the complete OB signal. The embodiment of the present invention can realize the protection switching of the OB signal at the optical layer, and improve the transmission efficiency of the OB signal.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to a method and a node for processing signals in an optical burst network. Background technique [0002] Protection switching is an important characteristic of optical transport network. The basic requirement of protection switching is to switch the signal to the protection path within a certain period of time (usually very short, such as 50 milliseconds) after a network failure, so as to restore signal reception. [0003] In a common OTN protection switching solution, the source node transmits optical signals through two optical ports, and then sends the optical signals to the destination node through different paths. Normally, the destination node can select one path as the working path to receive the optical signal, while other paths are used as the protection paths. When the working path fails, the destination node can switch to the protection path to receive the optical...

AI Technical Summary

Problems solved by technology

Although the second solution can realize the protection switching of signals with granularity below the wavelength level, it depends on the processing of the electrical layer

Therefore, if the above two schemes are still adopted when transmitting OB signals in the optical burst network, the protection switching of OB signals at the optical layer cannot be realized, and the transmission efficiency of OB signals will be reduced.

Images