Mesh Network Ring Protection Reconfiguration
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Solution Overview
Problem
Traditional ring network protection technologies fail to provide continuous service protection when multiple spans in the network fail, leading to service interruptions and loss of protection functions for other services.
Innovation Solution
A method for implementing permanent ring network protection in a MESH network, where nodes detect failures, switch affected services to protection paths, and establish new substitute paths using idle resources, forming a new ring network protection group capable of handling subsequent failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If ring network protection structure is determined during network planning, then protection switching speed is fast, but the structure cannot be dynamically adjusted when multiple spans fail, causing service interruption
Solution Approach 1:
The patent implements dynamic reconfiguration of the ring network protection structure by establishing a new protection group after detecting multi-span failures. The system transitions from a static protection structure determined during planning to a dynamic one that adapts by forming new protection rings using remaining functional spans and idle resources, thereby maintaining service continuity when multiple spans fail.
Solution Approach 2:
The patent changes the topological parameters of the network by identifying and utilizing idle spans and resources to form a new protection group. This parameter change allows the system to reconfigure the protection structure dynamically, converting unavailable spans into available protection paths through resource reallocation and topological reorganization.
2Reliability
If protection paths are established for all services, then service continuity is ensured, but network resources are wasted when some spans are not fully utilized
Solution Approach 1:
The patent recovers idle network resources by identifying spans that are not currently carrying protected services and incorporating them into the protection group. Instead of leaving these resources unused, the system recovers them by assigning them as protection paths, thereby improving resource utilization while maintaining service continuity for active services.
Solution Approach 2:
The patent makes network spans universal by enabling them to serve multiple functions: active service transmission, protection paths, and dynamically reconfigurable resources. The same physical infrastructure can be allocated to different services or protection functions based on real-time network conditions, maximizing resource efficiency while ensuring service continuity.
3Device complexity
If traditional ring network protection is used, then implementation is simple, but protection function is lost when multiple spans fail simultaneously
Solution Approach 1:
The patent implements self-service by enabling the network to automatically detect multi-span failures, identify idle resources, and reconfigure protection groups without external intervention. The system autonomously monitors span status, determines resource availability, and establishes new protection paths, thereby maintaining protection function availability while keeping the implementation relatively simple through automated decision-making.
Solution Approach 2:
The patent incorporates feedback mechanisms where the network continuously monitors span status and service performance. When failures are detected, the system uses this feedback information to trigger dynamic reconfiguration, adjusting protection paths based on real-time network conditions. This feedback loop ensures protection function availability while adapting to changing network states.
Data Source
AI summary
A method for realizing permanent ring network protection in MESH network, the method includes following steps: when a node in the ring network protection group detects the failure of a span, notifies the information of the failure to other nodes in the ring network protection group(11); the service influenced by the failure is switched to be transmitted in it’s protection route by each node in the ring network protection group (12); searching a replacing route for the failure span in the idle resource of the MESH network(13); establishing a new ring network protection group by adopting the replacing route and the sections in the original network protection group which is not influenced by the failure(14); and the service influenced by the failure is switched from transmitting via protection route to transmitting via the replacing route(15). The present invention can provide permanent ring network protection function for all services in the ring network.