MR-DC QoS Coordination Using Downgraded Profile Exchange

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Solution Overview

Problem

Current wireless communication networks in Multi Radio access technology—Dual Connectivity (MR-DC) lack clear methods for coordinating and exchanging QoS parameters when degraded to alternative QoS profiles, leading to suboptimal radio resource management and potential loss of resources.

Innovation Solution

Implement a method where network nodes exchange indications of currently supported downgraded QoS levels and parameters, allowing each node to decide on appropriate QoS parameters for radio resources based on the other node's capabilities, ensuring coordinated QoS handling during MR-DC operations such as SN change, modification, and handover.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If network nodes in MR-DC do not exchange QoS parameter indications, then the signaling overhead is reduced, but the radio resource management becomes suboptimal and resources may be lost

Engineering Contradiction:

ImproveQoS parameter coordination informationVSAvoidSignaling overhead

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts only the essential QoS parameter indications (downgraded QoS levels and parameters) from the complete QoS configuration and exchanges only these critical elements between network nodes. This selective extraction prevents information loss while avoiding the complexity of exchanging complete QoS profiles, resolving the contradiction between information completeness and signaling overhead.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary identification and indication of downgraded QoS levels and parameters before actual radio resource allocation decisions are made. By preparing and exchanging this information in advance, network nodes can make informed resource management decisions without requiring complex real-time negotiations, thus preventing resource loss while maintaining efficient signaling.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If network nodes exchange complete QoS profiles, then the QoS management becomes more accurate, but the signaling overhead and processing complexity increase significantly

Engineering Contradiction:

ImproveQoS management accuracyVSAvoidSignaling overhead

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by indicating only the specific downgraded QoS levels and parameters that are relevant to the current network node's capabilities and the ongoing communication context. Instead of exchanging complete QoS profiles universally, each node exchanges locally relevant QoS information, ensuring accurate QoS management while minimizing unnecessary signaling overhead.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent segments the QoS information exchange into distinct components: downgraded QoS levels and specific QoS parameters. This segmentation allows network nodes to exchange only the necessary portions of QoS information required for resource management decisions, rather than transmitting complete QoS profiles, thus maintaining reliability while reducing complexity.

Inventive Principle:

Principle #1Segmentation

3Productivity

If network nodes make independent QoS decisions without coordination, then the decision-making speed is faster, but the radio resource allocation becomes suboptimal

Engineering Contradiction:

ImproveResource allocation efficiencyVSAvoidCoordination time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent performs preliminary exchange of downgraded QoS level and parameter indications between network nodes before resource allocation decisions are required. This advance preparation enables nodes to make independent, informed decisions without requiring time-consuming coordination during actual resource allocation, thus improving productivity while minimizing coordination time.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses downgraded QoS level and parameter indications as intermediary information that mediates between independent network nodes. These indications serve as a common reference that enables coordinated resource allocation decisions without requiring continuous direct negotiation between nodes, thus improving resource allocation efficiency while reducing coordination overhead.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12574793B2First network node, second network node and methods in a wireless communications network

Publication Date: 2026.03.10 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method performed by a first network node for handling Quality of Service, QoS, parameters for respective first and second radio resources to be provided to a User Equipment, UE, in Multi Radio access technology—Dual Connectivity. The first network node sends (502) a first indication to the second network node. The first indication indicates a first set of downgraded QoS levels and their respective one or more QoS parameters currently supported in the first network node. The first network node receives (503) a second indication from the second network node. The second indication indicates the second set of downgraded QoS levels and their respective one or more QoS parameters currently supported in the second network node. The first network node decides (504) one or more QoS parameters for the first radio resources to be provided to the UE from the first network node in the MR-DC.