Autonomous Network Routing Domain Management in IAB Backhaul

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Solution Overview

Problem

Existing wireless backhaul networks face challenges in dynamically managing overlapping network routing domains to optimize redundancy, load balancing, and self-healing mechanisms, particularly in response to changes in network topology or traffic loads.

Innovation Solution

A method and system for network nodes to autonomously propagate or truncate network routing domains based on routing messages and physical link metrics, using logical links to adjust connectivity and traffic routing between peer nodes, thereby optimizing domain size and overlap for improved redundancy and performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If overlapping network routing domains are implemented to provide redundancy, then network reliability is improved, but device complexity increases due to manual configuration requirements

Engineering Contradiction:

Improvenetwork redundancyVSAvoidconfiguration complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements autonomous routing domain management where network nodes automatically determine their own routing domain membership based on physical connectivity and routing messages. Nodes self-configure by receiving routing domain information from peer nodes and autonomously establishing logical links, eliminating the need for manual configuration while maintaining redundant overlapping domains for improved reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system uses routing messages exchanged between network nodes to dynamically adjust routing domain membership. Nodes continuously receive feedback about network topology changes, link conditions, and routing domain boundaries, automatically reconfiguring their logical links and routing domain associations to maintain optimal redundancy without manual intervention

Inventive Principle:

Principle #23Feedback

2Stability of the object's composition

If manual configuration of logical links is used when network nodes are added or removed, then routing domain membership is maintained, but adaptability decreases in response to dynamic network changes

Engineering Contradiction:

Improverouting domain membershipVSAvoidresponse to network changes

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic routing domain management where network nodes automatically adjust their routing domain membership in response to real-time network changes. When nodes are added or removed, or when link conditions change, nodes autonomously receive updated routing messages and dynamically reconfigure their logical links and routing domain associations without manual intervention, maintaining both stability and adaptability

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system continuously exchanges routing messages between nodes to detect network topology changes. When changes are detected, nodes receive feedback about the new network state and automatically adjust their routing domain membership and logical link configurations, enabling seamless adaptation to dynamic network conditions while maintaining routing domain integrity

Inventive Principle:

Principle #23Feedback

3Reliability

If reconfiguration of overlapping network routing domains is performed manually when link conditions change, then routing optimization is achieved, but productivity decreases due to manual intervention requirements

Engineering Contradiction:

Improverouting optimizationVSAvoidreconfiguration speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent implements autonomous routing optimization where network nodes automatically monitor link conditions and reconfigure their routing domain membership in response to changes. Nodes self-adjust their logical links and routing associations based on received routing messages about link quality and network topology, achieving optimal routing configuration without manual intervention and enabling rapid adaptation to changing conditions

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system enables dynamic reconfiguration of routing domains where nodes continuously adapt their routing domain membership based on real-time link conditions. When link quality deteriorates or network topology changes, nodes autonomously and rapidly reconfigure their logical links and routing associations, achieving fast optimization without the delays inherent in manual reconfiguration processes

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS10009260B2Management of network routing domains in communication networks

Publication Date: 2018.06.26 QUALCOMM INC

AI summary

Aspects of the disclosure relate to network management in communication networks, including but not limited to wireless communication networks including integrated access and backhaul (IAB) nodes within an IAB backhaul network. For example, a network node may determine to integrate a peer node, to which the network node has physical connectivity, into a network routing domain of which the routing node is a member. In another example, a network node may determine to truncate a peer node from a network routing domain. In various examples, the decisions to propagate or truncate the network routing domain may be made based on routing messages within a network routing domain, or in a plurality of overlapping network routing domains. In further examples, the decisions may be based on information about physical links between respective nodes.