Multi-Media Session QoS Coordination Across Network Functions

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Solution Overview

Problem

Existing solutions in 3GPP Release 18 fail to efficiently manage application sessions for multi-modal services, particularly in coordinating QoS policy and application synchronization for both single and multiple UEs, leading to inefficiencies and inconsistencies in delivering synchronized multi-modal data streams.

Innovation Solution

An application function initiates a request to reserve resources for an application session involving multiple media types, specifying QoS parameters and dependency requirements, which is then processed by a network exposure function and policy control function to ensure coordinated delivery of these streams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing 3GPP Release 18 solutions are used to manage application sessions for multi-modal services, then basic resource reservation is possible, but QoS policy coordination and application synchronization fail to achieve efficient and consistent delivery

Engineering Contradiction:

ImproveQoS policy coordination reliabilityVSAvoidapplication session management efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent combines multiple media types (audio, video, haptic feedback) into a single application session managed by the AF, with the NEF and PCF coordinating QoS policies across all media types simultaneously. This merging approach ensures synchronized delivery while improving management efficiency compared to handling media types separately.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements feedback mechanisms where the AF receives status information about media type delivery from the NEF and PCF, allowing it to adjust QoS parameters and synchronization settings in real-time. This feedback loop enables reliable QoS coordination while maintaining high productivity through adaptive resource allocation.

Inventive Principle:

Principle #23Feedback

2Ease of operation

If multi-modal data streams are transmitted with loose synchronization requirements, then network resource allocation is simplified, but user experience deteriorates due to lack of coordination between media types

Engineering Contradiction:

Improvenetwork resource allocation simplicityVSAvoidmedia type synchronization precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent implements dynamic QoS parameter adjustment where the PCF modifies bandwidth, priority, and latency settings based on real-time synchronization status of media types. This dynamic approach maintains simple resource allocation procedures while achieving precise synchronization through continuous parameter optimization.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes QoS parameters (bandwidth, priority, packet delay budget) dynamically based on the specific requirements of each media type and their synchronization needs. This parameter adjustment enables precise coordination between audio, video, and haptic feedback streams without complicating the overall resource allocation process.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If application sessions for multiple media types are managed independently, then session management complexity is reduced, but coordination between dependent media types becomes insufficient

Engineering Contradiction:

Improvesession management complexityVSAvoidmedia type coordination reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent creates a universal application session framework that handles multiple media types (audio, video, haptic feedback) through a single unified management process. The AF, NEF, and PCF operate with multi-functional capabilities to coordinate all media types simultaneously, maintaining simple session management while ensuring reliable coordination through integrated policy control.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Ease of manufacture

If QoS parameters are set statically for application sessions, then setup process is simplified, but adaptability to changing network conditions and media requirements is insufficient

Engineering Contradiction:

ImproveQoS setup simplicityVSAvoidQoS parameter adaptability

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent performs preliminary QoS parameter configuration during session setup, establishing baseline values for bandwidth, priority, and latency. These preliminary settings are then dynamically adjusted based on real-time network conditions and media type requirements, maintaining simple initial setup while achieving high adaptability through continuous optimization.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4569802B1Application session management

Publication Date: 2026.03.25 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

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AI summary

There is provided a method for managing an application session. The method is performed by an application function. The method comprises initiating transmission (102) of a first message towards a network exposure function. The first message comprises a first request to reserve resources for an application session for an application that involves multiple media types. The first message comprises one or more requirements for the transmission of the multiple media types for the application session and information indicative that the resources are for an application that involves multiple media types.