Optical Network Node Service Recovery via Data Plane Overhead
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Solution Overview
Problem
The complexity of information processing in optical networks, particularly in service recovery processes, is heightened by the complexity of control plane protocols such as GMPLS RSVP-TE signaling protocols, making the resolution of messages and obtaining necessary information cumbersome.
Innovation Solution
The method involves receiving messages from the overhead of optical channels, searching for local configuration information that includes protection path overhead and resources, and using this information to determine and send recovery messages through the data plane, simplifying the signaling protocol and reducing information processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control plane protocols such as GMPLS RSVP-TE signaling protocols are used for service recovery, then service reliability is improved, but information processing complexity increases
Solution Approach 1:
The patent extracts the service recovery function from the control plane and implements it directly in the data plane through simplified overhead messages. The complex GMPLS RSVP-TE signaling protocol is replaced by extracting only the essential recovery functionality and implementing it through simple overhead byte manipulation, thereby reducing information processing complexity while maintaining service reliability
Solution Approach 2:
The patent changes the parameter of message complexity by transitioning from complex GMPLS RSVP-TE signaling protocols to simplified overhead messages. The message format is changed from multi-layer control plane signaling to simple overhead bytes that can be processed directly, thereby reducing information processing complexity while maintaining the service recovery function
2Reliability
If control plane participation is used in the recovery process, then service recovery reliability is improved, but processing time increases
Solution Approach 1:
The patent extracts the service recovery function from the control plane and implements it directly in the data plane through simplified overhead messages. The complex GMPLS RSVP-TE signaling protocol is replaced by extracting only the essential recovery functionality and implementing it through simple overhead byte manipulation, thereby reducing information processing complexity while maintaining service reliability
Solution Approach 2:
The patent establishes protection paths in advance with pre-configured overhead message formats. When a failure occurs, the pre-configured overhead messages can be immediately processed and transmitted without waiting for complex control plane signaling exchanges, thereby reducing processing time while maintaining recovery reliability through the pre-established protection paths
Data Source
AI summary
An information processing method in an optical network, an optical communication apparatus, and an optical communication system are disclosed according to the embodiments of the present invention. The method includes: A node receives a first message from overhead of a first dimension; the node searches for local configuration information, where the local configuration information includes the overhead of the first dimension of a protection path, a protection resource of the first dimension of the protection path, overhead of a second dimension of the protection path, and a protection resource of the second dimension of the protection path; according to the local configuration information and the first message, the node determines a protection path correlated with the first message and determines overhead of the second dimension correlated with the first message; and the node sends a second message to a node adjacent to the second dimension through the overhead of the second dimension correlated with the first message, according to the first message. The technical solutions provided by the embodiments of the present invention can reduce information processing complexity.