DRX Parameter Adjustment for Mobile Power Management
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Solution Overview
Problem
Current power management mechanisms in 3GPP LTE systems are inadequate in balancing power saving efficiency and quality of service, as they do not effectively adjust DRX cycle parameters based on current traffic status, leading to suboptimal performance.
Innovation Solution
A traffic-based DRX cycles adjustment scheme that dynamically adjusts DRX parameters (TDS, TDL, NSC) using a device with a processor that calculates evaluation metrics and selects appropriate action sets based on traffic states, optimizing power management by considering discrete traffic states and transition probabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DRX cycle parameters are fixed to ensure reliable data transmission, then quality of service is maintained, but power saving efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by making DRX cycle parameters adjustable rather than fixed. The base station dynamically selects from multiple candidate parameter sets based on current traffic status, allowing the system to adapt between power-saving mode (longer cycles) and quality-of-service mode (shorter cycles) according to real-time conditions.
Solution Approach 2:
The patent implements parameter changes by maintaining multiple candidate DRX parameter sets with different configurations (cycle lengths, on-duration, off-duration). The base station evaluates traffic status and selects the appropriate parameter set, changing parameters based on whether traffic conditions favor power saving or quality of service.
2Use of energy by moving object
If DRX cycle parameters are adjusted to improve power saving efficiency, then power consumption is reduced, but quality of service deteriorates
Solution Approach 1:
The patent uses parameter changes to provide different DRX configurations that balance power saving and quality of service. When power saving is prioritized, parameters are adjusted to longer cycle lengths; when quality of service is prioritized, parameters are adjusted to shorter cycle lengths, ensuring neither objective is permanently compromised.
Solution Approach 2:
The system dynamically adjusts DRX parameters based on traffic status evaluation. The base station monitors traffic conditions and switches between parameter sets optimized for power saving versus those optimized for quality of service, ensuring appropriate performance characteristics under varying conditions.
3Device complexity
If traditional power management mechanisms are used, then system complexity is low, but power saving efficiency and quality of service balance deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the power management function into distinct components: traffic status monitoring, candidate parameter set evaluation, and selective application. The base station maintains multiple candidate parameter sets and selectively applies them based on traffic status, creating a structured approach that balances complexity with performance.
Data Source
AI summary
A device in a base station of a mobile communication system for power management can include a storage device to store a group of parameter sets associated with a user equipment (UE) of the mobile communication system. The device can include a processor to calculate a corresponding objective function associated with each entity of the group of parameter sets. The processor can be configured to select an entity of the group of parameter sets based on the corresponding objective function, and the selected entity of the group of parameter sets facilitates the power management for the UE.