Method and node for processing signal in optical burst-switched network

Abstract

The invention provides a method and a node for processing a signal in an optical burst-switched network. The method comprises: determining whether a first path optical burst (OB) signal on a work path is normal by a receiving node, when determining a second part OB signal in the first path OB signal is abnormal, obtaining a first part OB signal from the first path OB signal except the second part OB signal, and obtaining the second OB signal from a second path OB signal on a protection path by the receiving node, wherein the contents of the first path OB signal and the second path OB signal are the same; synchronizing the second part OB signal obtained from the second path OB signal and the first part OB signal by the receiving node; and combining the second part OB signal obtained from the second path OB signal and the first part OB signal by the receiving node to obtain a complete OB signal. An embodiment of the invention can achieve protection switching of the OB signal in an 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.

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