QoE Measurement Reporting via Alternate SRB in NR Dual Connectivity

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing QoE measurement reporting mechanisms in wireless communication networks face challenges in maintaining continuity during radio access network (RAN) overload situations, particularly in NR-Dual Connectivity (DC) scenarios where both legs (MN and SN) cannot be used for reporting data.

Innovation Solution

A terminal device receives a pause indication for QoE reporting and requests a SRB configuration with a second network device, enabling it to transmit QoE measurement results via an established SRB, ensuring timely and effective reporting continuity by utilizing an alternative network leg.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If QoE measurement reporting is paused during RAN overload, then network resource utilization is improved, but QoE measurement reporting continuity deteriorates

Engineering Contradiction:

Improvenetwork resource utilizationVSAvoidQoE measurement reporting continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent divides the QoE measurement reporting path into two separate legs (MN leg and SN leg) in dual connectivity mode. When one leg is paused due to overload, the other leg can continue reporting, thus segmenting the reporting path to maintain continuity while allowing resource management on individual legs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the reporting parameter by switching between different reporting paths (MN to gNB1, SN to gNB2) based on network conditions. This parameter change allows the system to adapt to overload situations by dynamically selecting which leg to use for reporting, maintaining continuity while managing network resources.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If both MN and SN legs are unavailable for reporting, then network load is reduced, but QoE measurement reporting capability is lost

Engineering Contradiction:

Improvenetwork load managementVSAvoidreporting interruption

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent prepares alternative reporting paths in advance by configuring both MN and SN legs before overload occurs. When one leg becomes unavailable due to overload, the pre-configured alternative leg can immediately take over, providing cushioning against reporting interruptions without requiring real-time path establishment.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent introduces the second network device (gNB2) as an intermediary reporting target. When the primary reporting path is unavailable, QoE data can be routed through the secondary path to gNB2, which acts as a mediator to maintain reporting continuity even when direct reporting to the primary gNB is blocked.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If QoE reporting uses a single path, then device complexity is reduced, but reporting reliability under overload deteriorates

Engineering Contradiction:

Improvereporting path configurationVSAvoidreporting continuity under overload

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent makes the terminal device universal by enabling it to report QoE measurements through multiple paths (both MN and SN legs) depending on network conditions. This multi-functionality allows the same device to adaptively switch reporting paths without requiring different devices for different scenarios, maintaining reliability while managing complexity through standardized multi-path capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250374101A1Quality of experience measurement reporting

Publication Date: 2025.12.04 NOKIA TECHNOLOGIES OY

AI summary

Embodiments of the present disclosure relate to QoE measurement reporting. A terminal device receives, from a first network device, a message indicative of pausing QoE reporting to the first network device. Then the terminal device transmits, to the first network device, a message for requesting a SRB configuration with a second network device. Next, the terminal device transmits, to the second network device. QoE measurement result based on the received SRB configuration. Thus, timely and effective QoE measurement reporting mechanism is provided.