Dynamic DRX Timer Control for Low-Latency XR Wireless Links
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Solution Overview
Problem
Wireless communications systems often implement static timer configurations for discontinuous reception (DRX) that do not adapt to varying data traffic types, leading to increased power consumption and latency in devices like XR equipment due to non-integer traffic periodicity and jitter.
Innovation Solution
Implementations provide for semi-static and dynamic updates of DRX timers, along with dynamic signaling to adjust DRX parameters, enabling multiple simultaneous DRX configurations to reduce power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static timer configurations are implemented for DRX, then device complexity is reduced and ease of operation is improved, but power consumption increases and adaptability to varying data traffic types deteriorates
Solution Approach 1:
The patent implements dynamic DRX timer configurations that can be adjusted based on traffic conditions. The network can update DRX parameters (such as drx-OnDurationTimer, drx-SleepTimer, drx-InactivityTimer) dynamically to adapt to varying data traffic types and patterns, allowing the system to transition from static to adaptive power management while maintaining ease of operation through automated control
Solution Approach 2:
The patent changes DRX parameter values based on traffic characteristics. Different timer configurations are applied for different traffic types (e.g., longer inactivity timers for bursty traffic, shorter timers for continuous traffic), enabling the system to optimize power consumption by matching DRX parameters to actual traffic patterns rather than using fixed configurations
2Device complexity
If static timer configurations are implemented for DRX, then device complexity is reduced, but adaptability to varying data traffic types deteriorates
Solution Approach 1:
The system implements dynamic DRX configurations where timer values can be updated based on traffic conditions. The network maintains control over DRX parameter adjustments, sending update commands to UEs when traffic patterns change, thereby providing adaptability without significantly increasing UE device complexity
Solution Approach 2:
The patent employs feedback mechanisms where the network monitors traffic patterns and adjusts DRX parameters accordingly. The system receives feedback about traffic conditions and uses this information to dynamically update DRX timer configurations, enabling adaptability while keeping the UE implementation relatively simple by centralizing the decision-making logic in the network
3Adaptability or versatility
If dynamic signaling is used to update DRX parameters, then adaptability to data traffic types is improved, but signaling overhead increases
Solution Approach 1:
The patent applies dynamic signaling selectively rather than continuously. DRX parameter updates are triggered only when traffic patterns change or when specific conditions are met, reducing the overall signaling overhead while maintaining adaptability. The system uses partial updates (only when necessary) rather than excessive continuous signaling
Solution Approach 2:
The patent changes DRX parameters based on actual traffic needs rather than continuously signaling all possible parameter variations. By updating only the necessary parameters when traffic conditions warrant changes, the system achieves adaptability while minimizing the signaling overhead associated with transmitting DRX configuration information
4Device complexity
If static DRX configurations are used, then scheduling is simplified, but scheduling delay increases for XR traffic with non-integer periodicity and jitter
Solution Approach 1:
The patent implements dynamic DRX configurations that can adapt to XR traffic characteristics including non-integer periodicity and jitter. By dynamically adjusting DRX timer values and synchronization points based on actual traffic patterns, the system reduces scheduling delays while maintaining manageable complexity through automated network control
Solution Approach 2:
The patent changes DRX parameters to match XR traffic patterns. The system adjusts timer values, cycle lengths, and synchronization offsets based on the specific periodicity and jitter characteristics of XR traffic, enabling timely delivery while keeping scheduling complexity manageable through parameter optimization rather than complex scheduling algorithms
Data Source
AI summary
Various aspects of the present disclosure relate to methods, apparatuses, and systems that support timing control in wireless communications. For instance, implementations provide for determination of DRX timers such as when DRX parameters are semi-statically and/or dynamically updated. Further, implementations provide for dynamic signaling to update DRX parameters. Still further, signaling enhancements and user equipment (UE) behaviors are provided for enabling multiple simultaneous DRX configurations.