Loop circuit switching method, communication system and related equipment

Abstract

The embodiment of the invention discloses a loop circuit switching method, a communication system and related equipment, which can reduce the switching time and enhance the switching performance. The The embodiment of the invention discloses a loop circuit switching method, a communication system and related equipment, which can reduce the switching time and enhance the switching performance. Theloop circuit switching method comprises the following steps: when signal abnormity is detected, a switching initiating node sends a switching request to a switching response node by a transfer node, aloop circuit switching method comprises the following steps: when signal abnormity is detected, a switching initiating node sends a switching request to a switching response node by a transfer node, and the switching request comprises an automatic protection switching (APS) request type occupying four bits, a path mark occupying one bit, a sender mark position occupying one bit, request channel innd the switching request comprises an automatic protection switching (APS) request type occupying four bits, a path mark occupying one bit, a sender mark position occupying one bit, request channel information occupying six bits and a bridging mark occupying one bit; and the switching response node confirms the occurrence of the signal abnormity according to the APS request type and executes bridgformation occupying six bits and a bridging mark occupying one bit; and the switching response node confirms the occurrence of the signal abnormity according to the APS request type and executes bridging according to the request channel information. The embodiment of the invention also provides the communication system and the related equipment and can reduce the switching time and enhance the swiing according to the request channel information. The embodiment of the invention also provides the communication system and the related equipment and can reduce the switching time and enhance the switching performance.tching performance.

Description

technical field [0001] The invention relates to the communication field, in particular to a loop switching method, a communication system and related equipment. Background technique [0002] The Optical Transport Network (OTN, Optical Transport Network) is a new optical transport technology. With the development of the OTN technology, various forms of OTN protection have been widely used in the existing technology, which effectively improves the survivability of services. [0003] The shared protection ring (SPRing, Shared Protection Ring) in the prior art can realize automatic switching protection through automatic switching protection (APS, Automatic Protection Switching) parameters, wherein, the specific structure of the APS parameters can be shown in the following table: [0004] Table 1 [0005] name length the meaning request 4bits APS request type S 1 bit "1": switchover or status request message; ...

AI Technical Summary

Problems solved by technology

[0006] It can be seen from Table 1 above that the APS parameters occupy a total of 30 bits, that is, 4 bytes are required. In the automatic switching protection scheme, in order to improve user experience and system performance, the time required for automatic switching protection is best controlled Within 50 milliseconds, but when the number of sites that make up the SPRing is large, since the APS parameters occupy 4 bytes, the reciprocating interaction of APS parameters between the sites will make the automatic switching protection time exceed 50 milliseconds, thus reducing the user experience and system performance

Images