Inter-Domain Edge Node Selection via Service Label Correlation
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Solution Overview
Problem
Existing methods for selecting inter-domain border network resources in communication networks require a homogeneous environment with the same MPLS technology, failing to address the correlation issues between different technologies deployed by domains, which have varying information structures.
Innovation Solution
A method that selects inter-domain border network resources by defining service labels with primary and secondary data, enabling correlation across heterogeneous technologies while preserving network resource confidentiality, and reserves resources if available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a homogeneous environment with the same MPLS technology is used, then resource selection and correlation is simplified, but adaptability to different technologies and information structures is reduced
Solution Approach 1:
The patent introduces an intermediary correlation mechanism that translates between different technology-specific information structures. Service labels act as intermediaries that carry essential service requirements without exposing underlying technology differences, enabling correlation between domains using different MPLS versions or other technologies while maintaining simplified resource selection.
Solution Approach 2:
The service label structure is designed to be universal across different technologies and MPLS versions. By defining service labels with generic service parameters rather than technology-specific details, the system achieves multi-functionality that works across heterogeneous domains, resolving the contradiction between simplicity and adaptability.
2Reliability
If technology-specific information structures are used in each domain, then technology compatibility is maintained, but correlation between different technologies becomes difficult
Solution Approach 1:
Service labels serve as intermediary objects that bridge technology-specific information structures. Each domain can maintain its native technology format internally while translating to a common service label format for inter-domain correlation, thus preserving technology compatibility while simplifying cross-technology correlation.
Solution Approach 2:
The information structure is segmented into two layers: technology-specific internal representations and technology-agnostic service labels for inter-domain communication. This segmentation allows each domain to maintain its technology compatibility while enabling straightforward correlation through the standardized service label interface.
Data Source
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AI summary
The present invention relates to a method for selecting inter-domain edge network resources in a communication network, a domain being under the responsibility of a single operator and comprising a plurality of nodes, including at least one edge node, the domains being divided into at least three levels, including a service level, a monitoring level, and a network level. The method comprises the steps of: - at the service level: - selecting at least one sequence of service elements, said sequence satisfying a service request from a user of a domain, a service element being associated with a domain and comprising quality of service data and a reference to a plurality of service labels - for each domain participating in said sequence: - selecting service labels corresponding to the service elements of said sequence,a service label comprising the following primary data: - a service label identifier; - at least one identifier of a border node that supports the service label; - at least one identifier of an adjacency link between said border node and an adjacent border node; - perform a correlation between each of the domain's service labels and the service labels of at least one interconnected adjacent domain based on the primary data of the service labels so as to obtain a list of service labels; - select a service label from said list; - at a level other than the service level, for each domain participating in said sequence, select a corresponding resource identifier, said resource identifier comprising network data relating to inter-domain border network resources supported by the border node that supports the selected service label; and - at the network level,For each domain participating in said sequence, verify the availability of the inter-domain border network resources defined in the selected resource identifier and reserve said inter-domain border network resources if they are available.