Method for controlling information transmission/reception in automatic exchange optical network and its system

Abstract

The invention provides a control information transmission / receiving method and system in ASON, said transmission method includes: a1) picking up control information and encapsulated; b1) mapping said encapsulated control information into the frame structure of the STM-N to insert byte; c1) transmitting the STM-N frame. In said method, the control information includes command, route or link managing information. Based on the invention, a standard container C4 channel of a STM-N possesses useful bandwidth of 1152Kbit / s; further, the control signal adopts ethernet network interface, it can realize the interlinkage between band and other control signal out of band effectively.

Description

technical field [0001] The invention relates to optical transmission technology, in particular to a method for transmitting / receiving control information in ASON (Automatically Switched Optical Network) and a system thereof. Background technique [0002] ASON is defined by ITU-T (International Telecommunication Union Telecommunication Standardization Sector) G.8080. The biggest difference between it and traditional OTN (Optical Transport Network) is that it is a dynamic network, which is reflected in the dynamic allocation of bandwidth and network In terms of topology automatic discovery, the realization of this dynamic feature mainly comes from the role of its control plane. The key technologies for constructing the control plane mainly include routing technology, signaling technology, and link management technology. [0003] Routing technology performs routing operations and information discovery of network topology and resources, transfers link state information and calcu...

AI Technical Summary

Problems solved by technology

[0009] However, the automatic discovery technology based on Jx bytes has compatibility problems with the original transmission network. In the original transmission network, Jx bytes may be used for channel monitoring or equipment connectivity monitoring; on the other hand, Jx bytes The bandwidth of the byte is only 64Kbit / s. In a large-scale ASON network, the message communication volume of automatic discovery is large, which cannot meet the high-bandwidth communication, and the convergence speed is slow.

[0010] As for the ECC-based automatic discovery technology, as mentioned above, the D1-D3 bytes in the DCC constitute the regeneration section DCC, and the D4-D12 bytes constitute the multiplex section DCC, which may be used for control signaling exchange between terminals. A total of 768kbit / s data communication channels are still unable to meet the needs of high-bandwidth communication and fast convergence in large-scale ASON networks for control signaling and link resource management

[0011] The present invention is to solve the bandwidth problem of control information transmission in ASON and the compatibility problem with the original transmission network that may arise due to different control information transmission modes

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