PDU Set Handling Mode Switching for XR Traffic Trade-Offs

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently balancing user experience and resource usage in handling protocol data unit sets, particularly in extended reality (XR) traffic, due to the lack of dynamic switching between different handling modes.

Innovation Solution

Implementing dynamic switching between best-user experience and resource-saving PDU set handling modes, initiated by the network or the user equipment, based on trigger conditions such as network load, interference, and device status, using RRC reconfiguration and MAC control elements to manage PDU set handling modes on a per-DRB or per-QoS flow basis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the system uses a fixed PDU set handling mode, then the system complexity is reduced and ease of operation is improved, but the adaptability to different network conditions and traffic types deteriorates

Engineering Contradiction:

Improvesimplicity of PDU set handlingVSAvoidadaptability to network conditions

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic switching between different PDU set handling modes (first mode and second mode) based on network conditions and traffic characteristics. The system can transition from a static configuration to a dynamic one where the handling mode adapts to changing conditions, resolving the contradiction between operational simplicity and adaptability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the handling mode parameter based on detected trigger conditions such as network load, interference levels, and device status. This allows the PDU set handling behavior to be adjusted according to actual operating conditions while maintaining a standardized switching mechanism.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the system dynamically switches between different PDU set handling modes, then the adaptability to network conditions is improved, but the device complexity and power consumption increase

Engineering Contradiction:

Improveadaptability to network conditionsVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The system pre-configures multiple PDU set handling modes and the switching logic in advance. When trigger conditions are detected, the system can quickly switch between pre-defined modes without performing complex real-time optimization calculations, thereby reducing instantaneous power consumption while maintaining adaptability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The UE autonomously monitors network conditions and trigger conditions, and can independently switch between handling modes based on configured criteria. This self-service capability reduces the need for continuous network signaling and centralized control, thereby lowering overall system power consumption while maintaining adaptability.

Inventive Principle:

Principle #25Self-service

3Reliability

If the system monitors multiple trigger conditions for mode switching, then the reliability of mode selection is improved, but the complexity of detection and measurement increases

Engineering Contradiction:

Improvereliability of mode switchingVSAvoidcomplexity of trigger condition monitoring

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The system segments the monitoring of trigger conditions into distinct, independent parameters (e.g., network load, interference, device status). Each condition can be monitored and evaluated separately using standardized measurement procedures, reducing the overall complexity while improving the reliability of mode switching decisions through multi-factor analysis.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20260052584A1Network-initiated protocol data unit set handling mode switching

Publication Date: 2026.02.19 APPLE INC

AI summary

The present application relates to devices and components including apparatus, systems, and methods for switching protocol data unit set handling modes.