Adaptive DRX Settings for Mobile Terminal Battery Optimization
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Solution Overview
Problem
Current DRX settings in wireless communication devices are static and do not adapt to varying scheduling priorities and system loads, leading to inefficient power consumption and battery life, as devices may waste resources waiting for scheduling assignments even when in active mode.
Innovation Solution
Adaptive DRX settings are adjusted based on scheduling priorities and system load, extending inactive periods for lower priorities and shortening them for higher priorities, using timers such as Long DRX cycle, Short DRX cycle, On-duration timer, and HARQ RTT timer, to optimize power usage according to anticipated waiting times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If static DRX settings are used, then device complexity is reduced and ease of operation is improved, but battery consumption increases and battery life decreases
Solution Approach 1:
The patent applies dynamics by transitioning from static DRX settings to dynamic adaptive settings. The network node determines scheduling priority and system load, then adjusts DRX parameters (on-duration timer, long DRX cycle, short DRX cycle) in real-time based on these conditions. This allows the system to adapt to varying traffic patterns and scheduling priorities, reducing battery consumption during low-activity periods while maintaining responsiveness when needed.
Solution Approach 2:
The patent implements parameter changes by modifying DRX configuration parameters based on scheduling priority and system load. Specifically, the on-duration timer, long DRX cycle, and short DRX cycle parameters are adjusted according to the determined scheduling priority level and current system load conditions. This enables optimized power consumption by extending inactive periods for lower priorities while maintaining shorter cycles for higher priorities.
2Duration of action of stationary object
If DRX inactive periods are extended for lower priorities, then battery life is improved, but scheduling response time may worsen
Solution Approach 1:
The patent applies local quality by differentiating DRX settings based on scheduling priority levels. Different UEs or different services receive customized DRX configurations tailored to their specific priority requirements. High-priority traffic receives shorter DRX cycles and faster wake-up times, while low-priority traffic receives extended inactive periods. This localized optimization ensures that battery life improvements for low-priority traffic do not adversely affect the scheduling response time of high-priority traffic.
Solution Approach 2:
The patent segments the DRX operation into multiple priority-based configurations. By dividing the scheduling space into different priority levels (e.g., high, medium, low), the system can apply distinct DRX parameter sets to each segment. This segmentation allows simultaneous optimization of battery life for low-priority traffic and response time for high-priority traffic, resolving the contradiction between extended inactive periods and scheduling responsiveness.
3Productivity
If adaptive DRX settings are implemented, then power usage is optimized, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling the network node to autonomously determine scheduling priority and system load conditions, then automatically adjust DRX settings without requiring complex UE-side processing. The network node performs the adaptive DRX configuration and communicates the adjusted parameters to the UE, simplifying the UE implementation while achieving optimized power usage. This shifts the computational complexity to the network side where resources are more abundant.
Data Source
AI summary
Methods and arrangements for enabling reduced battery consumption in a mobile terminal. A method involves determining a scheduling priority associated with the mobile terminal and/or a load level in a cell associated with the mobile terminal. The method further involves determining whether a criterion is fulfilled based on the determined scheduling priority and/or load level, where the criterion is associated with an anticipated waiting time until being scheduled. If the criterion is fulfilled the DRX settings of the mobile terminal are adjusted, such that said settings are in accordance with the anticipated waiting time associated with the criterion. Thereby, reduced battery consumption in the mobile terminal is enabled.