Automatic switching transport network self-healing recovery method based on break before make

Abstract

The invention relates to an automatic switching transport network self-healing recovery method based on break before make, which is characterized in that an original service is firstly broken, a new service path is then established, and the transmitting and receiving of the line protection service are guaranteed to be in same route at any time; the self-healing recovery method concretely comprises two processes of service self-healing when the failure of a line fiber differential protection channel occurs, and service recovery when the failure of an original communication network is corrected; (1) when the failure of the line fiber differential protection channel occurs, the service self-healing process is as follows: a dynamic recovery channel based on control plane is arranged in the line fiber differential protection channel, the channel based on break before make is formed, the blocking state is opened, the channel time delay is recalculated, the operational parameters of a device are adjusted, and the self-healing process is finished; and (2) when the failure of an original communication network is corrected, the service recovery process is as follows: the ASON (automatic switch optical network) fault is corrected, the service reroute is broken to recover the channel, a line protection device monitors a channel fault, the ASON reestablishes the original designed route channel, and the service recovery is realized. The automatic switching transport network self-healing recovery method based on break before make realizes that the transmitting and receiving of the fiber differential protection channel are carried out in the same route at any time, the time delay during transmitting and receiving is maintained the same, and the automatic switching transport network self-healing recovery method based on break before make is applicable to the power line fiber differential protection service.

Description

technical field [0001] The invention relates to a self-healing recovery method of an automatic switching transmission network based on demolition first and then construction, and belongs to the technical field of communication of electric power transmission systems. Background technique [0002] At present, the long-distance transmission network of the power system mainly adopts the ring network protection technology based on SDH. The network structure is mainly based on the ring network and supplemented by the chain. The bearer service is mainly the traditional TDM circuit service. Its security and QoS are both Good protection. However, with the rapid development of data services, service requirements are characterized by more and more bandwidth, and higher and higher requirements for circuit transmission performance and reliability. The development of service networks and the expansion of network scale have exposed the insurmountable problems of the transmission network, ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing SDH and ASON networks cannot realize the self-healing of the optical fiber differential protection service, and to provide a self-healing recovery method based on the automatic switching transmission network that is first demolished and then built

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