Intelligent Optical Network Service Management via Segment Recovery
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Solution Overview
Problem
Conventional technologies only support service management with End-to-End recovery function in Automatic Switched Optical Networks (ASON), lacking the capability to manage services with Segment recovery function in a single signaling manner, which is essential for efficient resource utilization and fast recovery switching.
Innovation Solution
A method for service management in intelligent optical networks that includes receiving management request messages with operation objects and types, determining if a node is a branch node of a segment path, and managing services on segment paths by creating and transferring request messages along the segment path, configuring state information accordingly, using GMPLS RSVP-TE or CR-LDP protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If service management with End-to-End recovery function is implemented, then service reliability is improved, but the capability to manage services with Segment recovery function is lost
Solution Approach 1:
The patent segments the recovery function into two independent types: End-to-End recovery and Segment recovery. Each type can be managed separately through the same external command interface. The system divides the management capability into modular components that can handle different recovery scopes, allowing operators to select the appropriate recovery type based on service requirements without being constrained to a single recovery mode.
2Loss of energy
If Segment recovery function is added to improve resource utilization, then resource utilization rate is improved, but service management capability is worsened due to lack of single signaling method
Solution Approach 1:
The patent creates a universal external command interface that can manage both End-to-End recovery and Segment recovery services through a single signaling method. The management system is designed to be multi-functional, accepting the same types of external commands (lockout, forced switchover, requested switchover) regardless of which recovery type is active. This universal interface simplifies operations while supporting multiple recovery strategies and improves resource utilization by enabling Segment recovery management.
Data Source
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AI summary
A method for service management in an intelligent optical network includes: receiving, by a network node, a management request comprising an operation object and an operation type, creating a management request message according to the management request, and sending the management request message to each node in a working path; receiving, by each node in the working path, the management request message and managing a service according to the operation object and the operation type. By applying the present invention, the operation of external recovery and recovery of a whole connection or a certain segment path may be managed. Therefore, the manageability of a service for an operator improves.