Adaptive DRX Profile Selection for Mobile Power Management
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Solution Overview
Problem
Current mobile devices face challenges in balancing power savings and data throughput due to limited Discontinuous Reception (DRX) profile settings, which are typically controlled by the cellular network without user input, leading to inefficient power management and network signaling congestion.
Innovation Solution
Implementing an adaptive DRX profile selection service that allows mobile devices to recommend optimal DRX profiles based on their operating state, including application usage, data requirements, and user interaction, using a Power Preference Indicator (PPI) to dynamically adjust between multiple DRX profiles, enabling more flexible power conservation settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE frequently transitions between sleep mode and active mode to maintain data throughput, then data throughput is improved, but power consumption increases and network signaling volume increases
Solution Approach 1:
The patent implements dynamic DRX profile adjustment where the UE can transition between multiple DRX profiles (first profile with shorter sleep duration, second profile with longer sleep duration) based on operating conditions. The network entity receives indication information from the UE and dynamically switches the DRX profile, allowing the system to adapt between power-saving mode and throughput-optimized mode rather than being static.
Solution Approach 2:
The patent changes the DRX parameter (sleep duration) by selecting from multiple predefined profiles with different characteristics. The first DRX profile has a first sleep duration while the second DRX profile has a second sleep duration longer than the first. By changing which profile is active, the system adjusts the balance between power consumption and data throughput without requiring complex real-time parameter calculation.
2Device complexity
If the network controls all DRX settings without UE input, then network control is simplified, but the DRX settings may not conform to current UE usage patterns reducing efficiency
Solution Approach 1:
The patent introduces a feedback mechanism where the UE sends indication information to the network entity regarding its preferred DRX profile. The network entity receives this feedback and uses it to determine which DRX profile to apply. This creates a closed-loop system where the UE's actual usage patterns inform the network's control decisions, improving adaptability while maintaining manageable complexity through standardized feedback messages.
Solution Approach 2:
The UE autonomously evaluates its own operating conditions and determines which DRX profile would be most appropriate for its current usage pattern. The UE then indicates its preferred profile to the network, effectively making its own recommendation about how it should be managed. This self-service approach allows the UE to optimize its own performance without requiring complex network-side analysis of UE-specific usage patterns.
3Loss of energy
If the UE enters sleep mode more frequently to save power, then power savings increase, but data throughput decreases due to transition overhead and network signaling
Solution Approach 1:
The patent enables dynamic adjustment of sleep duration by selecting from multiple DRX profiles with different characteristics. Rather than using a fixed sleep duration, the system can adaptively choose between shorter sleep periods (when throughput is prioritized) and longer sleep periods (when power saving is prioritized), optimizing the balance based on current operating conditions.
Solution Approach 2:
The patent segments the DRX configuration into multiple discrete profiles, each with specific sleep duration characteristics. This segmentation allows the system to pre-configure different optimization strategies and switch between them as needed, rather than attempting to continuously tune parameters. The first DRX profile and second DRX profile represent distinct segmented configurations for different operational priorities.
Data Source
AI summary
Examples of power conservation management for user equipment based on the operating state of the user equipment are provided. A user equipment may implement a power managing application that monitors the activity of the user equipment, such as the number of applications open on the user equipment, the data usage requirements for each open application, data delay tolerances for each application and/or a level of user interaction with the device at a given moment. Based on the level of activity and the data requirements, the managing application on the user equipment is able to make a discontinuous reception profile setting recommendation selected from more than two discontinuous reception profiles to the mobile communications network entity. In response to the discontinuous reception profile setting recommendation, the network entity may modify the connection status with the user equipment.