Dynamic Path Switching for Layer-1 Redundancy Bandwidth Efficiency
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Solution Overview
Problem
Layer-1 redundancy schemes in data transmission networks are inefficient in utilizing network bandwidth, leading to suboptimal performance during failure conditions.
Innovation Solution
The method involves using a protection bandwidth of a first transmission path between two nodes and switching to a different second transmission path upon detecting a failure condition, utilizing non-layer-1 protocols like MPLS or RPR to determine and utilize the new path, which can occur approximately 50 ms after the failure detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a layer-1 redundancy scheme is used to protect against transmission failures, then data transmission reliability is improved, but network bandwidth utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic path selection by switching from static layer-1 protection to dynamic routing based on real-time failure detection. The system dynamically determines alternative transmission paths using non-layer-1 protocols (MPLS, RPR) when failures occur, allowing flexible adaptation to network conditions while maintaining reliability and improving bandwidth utilization.
Solution Approach 2:
The patent transitions from layer-1 redundancy (single dimension) to multi-layer redundancy by incorporating non-layer-1 protocols for path determination. This adds another dimension to the redundancy scheme, enabling cross-layer optimization where layer-2/3 protocols provide alternative path selection beyond the constraints of layer-1 protection mechanisms.
2Reliability
If protection bandwidth is allocated in layer-1 redundancy scheme, then failure recovery capability is improved, but network resource efficiency deteriorates
Solution Approach 1:
The patent changes the operational parameters of protection bandwidth by using non-layer-1 protocols to dynamically select alternative paths. Instead of static allocation, the system modifies path selection parameters based on real-time network conditions, allowing protection bandwidth to be efficiently reallocated to active transmission paths while maintaining failure recovery capability.
3Ease of manufacture
If static path protection is used, then implementation simplicity is improved, but adaptability to network failures deteriorates
Solution Approach 1:
The patent implements feedback mechanisms by using non-layer-1 protocols to detect network failures and dynamically determine alternative paths. The system continuously monitors network conditions and provides feedback for path selection, enabling adaptive response to failures while maintaining implementation feasibility through standardized protocol integration.
Data Source
AI summary
Network data transmission systems and methods are described. In one embodiment, a method for transmitting data between two nodes of a network can include transmitting the data using a protection bandwidth of a first transmission path between the two nodes and, based on detecting a failure condition in the first transmission path, using a different second transmission path between the two nodes to transmit the data otherwise transmitted using the protection bandwidth of the first transmission path. In one embodiment, the systems and methods can be applied to networks that use a layer-1 redundancy scheme.