Multi-layer Network Path Setting via Physical Information Feedback
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Solution Overview
Problem
In multi-layer networks, the static operation of the lower layer network and the high control load in the upper layer network lead to decreased usage efficiency and reliability due to contradictions between physical information from the lower layer and the current state of the lower layer.
Innovation Solution
A multi-layer network system with a first network manager setting logical paths in the upper layer based on physical network information, including route and transmission characteristics from a second network manager, which reduces the control load and enhances reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the lower layer network is operated statically, then the device complexity is reduced, but the usage efficiency deteriorates due to inability to dynamically adapt to traffic demands
Solution Approach 1:
The patent implements dynamic operation of the lower layer network by enabling real-time monitoring of physical network state and dynamically adjusting path configurations based on actual traffic demands and network conditions, transforming the static lower layer into an adaptive system that responds to changing requirements
Solution Approach 2:
The patent establishes a feedback mechanism where the upper layer network manager communicates with the lower layer network manager, allowing the lower layer to receive control instructions based on upper layer traffic demands and to report back its physical network state, enabling closed-loop control that improves usage efficiency while maintaining manageable complexity
2Measurement precision
If the upper layer network performs high control load operations, then the path setting accuracy is improved, but the control load and processing time increase
Solution Approach 1:
The patent divides the control functions into two segments: the upper layer network manager handles logical path planning and traffic demand management, while the lower layer network manager handles physical path configuration and state monitoring. This segmentation allows each layer to focus on specific tasks, improving path setting accuracy without overwhelming either layer with excessive control load
Solution Approach 2:
The patent implements preliminary action by having the lower layer network manager continuously monitor and report physical network state information in advance, so that when path setting is required, the upper layer already has current accuracy data to work with, reducing the time needed for path calculation and decision-making
3Device complexity
If physical network information is not accurately reflected, then the device complexity is reduced, but the reliability deteriorates due to contradictions between stored information and actual network state
Solution Approach 1:
The patent implements continuous feedback from the lower layer network manager to the upper layer network manager, where the lower layer reports actual physical network state information including link status, capacity, and topology changes. This feedback mechanism ensures that the upper layer always has accurate information for path planning, maintaining reliability without requiring complex information synchronization protocols
Solution Approach 2:
The patent enables the lower layer network to self-report its physical state information automatically through the network manager interface, eliminating the need for complex manual updates or intricate information synchronization mechanisms. The lower layer serves itself by maintaining accurate state information and making it available to the upper layer on demand
Data Source
AI summary
In a multi-layer network, a control load in the upper layer network increases, and the usage efficiency and the reliability of the entire network decrease; therefore, a multi-layer network system according to an exemplary aspect of the present invention includes a first network manager configured to set a logical path in a first network layer; and a second network manager configured to set a physical path corresponding to the logical path, in a second network layer, wherein the second network manager includes a network information storage configured to store physical network information including physical route information and transmission characteristic information on the second network layer, and the first network manager sets the logical path based on the physical network information.