Adaptive C-DRX Management for Wireless Power Optimization

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Solution Overview

Problem

Current wireless communication technologies do not efficiently manage power consumption in wireless devices due to their inability to adapt C-DRX operations based on varying application traffic characteristics, leading to excessive power usage.

Innovation Solution

Implement adaptive C-DRX management by analyzing previous and upcoming traffic patterns to determine when a wireless device can transition to a low power state, skipping certain C-DRX cycles without sacrificing performance, and adjusting C-DRX parameters based on application traffic types and patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If C-DRX operations are managed using fixed timing and standard procedures, then device complexity is reduced and ease of operation is improved, but power consumption increases due to inability to adapt to varying traffic patterns

Engineering Contradiction:

Improvepower consumptionVSAvoidC-DRX management complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent implements dynamic C-DRX management where the base station analyzes application traffic characteristics in real-time and adapts C-DRX parameters (timing, cycle lengths, on-duration) based on observed traffic patterns. This allows the system to transition from fixed, standardized C-DRX operations to adaptive, traffic-aware operations that optimize power consumption while maintaining performance

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes C-DRX operational parameters based on traffic analysis. The base station monitors application traffic characteristics and adjusts C-DRX timing, cycle lengths, and other parameters dynamically. This includes modifying when devices transition to C-DRX mode, how long they remain in low-power state, and when to wake for data transmission, all based on observed traffic patterns

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If C-DRX inactivity timer is used to determine transition to low power state, then simplicity of operation is maintained, but power consumption increases due to delayed transition and missed optimization opportunities

Engineering Contradiction:

Improvepower consumptionVSAvoiddelayed C-DRX transition

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The base station performs preliminary analysis of application traffic characteristics before the C-DRX inactivity timer expires. By proactively identifying traffic patterns and predicting future traffic based on historical data, the system can trigger C-DRX transitions earlier than the standard timer would allow, reducing power consumption without missing data transmission opportunities

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the base station continuously monitors application traffic characteristics and uses this information to adjust C-DRX timing decisions. The analysis of previous traffic patterns provides feedback that informs when to transition devices to C-DRX mode, optimizing the balance between power savings and performance

Inventive Principle:

Principle #23Feedback

3Use of energy by moving object

If C-DRX transitions are made earlier based on traffic analysis, then power consumption is reduced, but risk of missing upcoming traffic increases

Engineering Contradiction:

Improvepower consumptionVSAvoidperformance reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The base station uses feedback from continuous monitoring of application traffic characteristics to make informed C-DRX transition decisions. By analyzing traffic patterns and predicting future traffic based on historical data, the system can determine optimal transition points that balance power savings with the risk of missing traffic

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary analysis of traffic patterns before triggering C-DRX transitions. This proactive approach allows the base station to identify suitable transition opportunities while maintaining awareness of upcoming traffic requirements, reducing the risk of premature transitions

Inventive Principle:

Principle #10Preliminary action

4Use of energy by moving object

If standard C-DRX operations are used without adaptation, then ease of manufacture and deployment is improved, but power consumption increases due to lack of optimization for specific application characteristics

Engineering Contradiction:

Improvepower consumptionVSAvoiddeployment simplicity

Core Design Contradiction:

Use of energy by moving objectVSEase of manufacture

Solution Approach 1:

The base station automatically analyzes application traffic characteristics and configures optimal C-DRX parameters without requiring manual intervention or device-specific customization. The system self-adjusts to different traffic patterns, making deployment simple while achieving optimized power consumption across diverse applications

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10993279B2Adaptive C-DRX management

Publication Date: 2021.04.27 APPLE INC

AI summary

This disclosure relates to techniques for adaptive C-DRX Management. A wireless device and a cellular base station may establish a cellular link. According to some embodiments, the base station may monitor upcoming traffic with the wireless device. Based at least in part on the upcoming traffic for the wireless device, the base station may provide a command indicating to the wireless device to enter C-DRX. The command may further indicate to the wireless device a number of C-DRX cycles through which to remain in a low power state.