Dynamic DRX Configuration for Mobile Terminal Power Optimization
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Solution Overview
Problem
Current mobile communication systems, particularly in LTE and LTE-advanced, face challenges in optimizing power consumption of terminals due to fixed Discontinuous Reception (DRX) configurations, which do not adapt efficiently to varying data traffic conditions, leading to suboptimal power usage.
Innovation Solution
A method and apparatus that allow terminals to dynamically adjust DRX configurations by determining the need for configuration changes based on traffic properties and transmitting requests to the base station, enabling more efficient power conservation by optimizing DRX cycle, inactivity timer, and on-duration timer values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fixed DRX configuration is used, then device complexity is reduced, but power consumption cannot be optimized for varying traffic conditions
Solution Approach 1:
The patent implements dynamic DRX configuration where the terminal can request and the base station can adjust DRX parameters (drx-OnDuration, drx-Inactivity, drx-SlotOffset) based on current traffic conditions. This transforms the static DRX configuration into a dynamic one that adapts to varying data traffic patterns, allowing power consumption to be optimized without sacrificing adaptability.
Solution Approach 2:
The patent changes the parameters of the DRX configuration (timing parameters such as drx-OnDuration, drx-Inactivity, drx-SlotOffset) based on traffic conditions. By modifying these parameters dynamically, the system achieves both power consumption optimization and adaptability to different traffic scenarios.
2Use of energy by moving object
If DRX configuration is dynamically adjusted, then power consumption is optimized, but signaling overhead between terminal and base station increases
Solution Approach 1:
The terminal autonomously determines when DRX configuration adjustment is needed based on its own traffic conditions and initiates the configuration change request. This self-service approach reduces the need for continuous base station-controlled signaling, optimizing power consumption while minimizing unnecessary signaling overhead.
3Loss of time
If terminal autonomously determines DRX configuration changes, then response time to traffic changes is reduced, but control complexity at terminal increases
Solution Approach 1:
The terminal performs partial autonomous control by only determining whether DRX configuration adjustment is needed, while the base station retains final approval and configuration authority. This partial action approach reduces response time compared to full base station control, while avoiding the excessive complexity of complete terminal autonomy.
Data Source
AI summary
The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed.