Dynamic DRX Parameter Adjustment for Wireless Devices

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Solution Overview

Problem

Current wireless communication systems face challenges in optimizing battery life and data packet latency due to the static configuration of Discontinuous Reception (DRX) parameters, which fail to adapt to varying traffic profiles and data activity levels, leading to suboptimal battery efficiency and latency performance.

Innovation Solution

A method where a wireless device dynamically adjusts DRX configuration parameters based on the activity status of logical channels, using a preconfigured relationship table to select appropriate DRX-related parameter values that balance battery conservation and latency requirements, thereby optimizing DRX patterns and behavior in response to changing traffic conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If static DRX configuration parameters are used, then device complexity is reduced and ease of operation is improved, but battery efficiency deteriorates and latency performance worsens due to inability to adapt to varying traffic profiles

Engineering Contradiction:
Improveease of operationVSAvoidbattery efficiency
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic DRX parameter adjustment by monitoring logical channel activity status and automatically selecting appropriate DRX parameter values from a preconfigured relationship table. The system transitions from static configuration to dynamic adaptation based on real-time traffic conditions, allowing the wireless device to optimize battery efficiency while maintaining ease of operation through automated control.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes DRX parameter values (such as drx-InactivityTimer, drxShortCycleTimer, drxLongCycleTimer) based on logical channel activity status. By preconfiguring multiple DRX parameter sets and selecting appropriate values according to traffic conditions, the system achieves adaptive battery optimization without requiring complex manual configuration.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If static DRX configuration parameters are used, then device complexity is reduced, but latency performance deteriorates due to failure to adapt to varying traffic profiles and data activity levels

Engineering Contradiction:
Improvedevice complexityVSAvoidlatency
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The system dynamically adjusts DRX parameters based on logical channel activity status, enabling latency optimization for different traffic types without increasing device complexity. The automated selection process and preconfigured relationship table allow the system to adapt to varying traffic profiles and data activity levels, reducing latency when needed while maintaining simple operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

By changing DRX parameter values according to logical channel activity status, the system optimizes latency performance for different traffic conditions. The preconfigured relationship table provides multiple parameter sets that can be selected based on real-time requirements, achieving low latency for urgent traffic while maintaining simple device architecture.

Inventive Principle:
Principle #35Parameter changes

3Use of energy by moving object

If DRX parameters are dynamically adjusted based on logical channel activity status, then battery efficiency is improved and latency performance is optimized, but device complexity increases due to monitoring and parameter selection mechanisms

Engineering Contradiction:
Improvebattery efficiencyVSAvoiddevice complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent segments the monitoring process by logical channel, allowing independent activity status determination for each channel. This segmentation enables targeted DRX parameter adjustment without requiring complex global analysis, reducing the overall complexity burden while achieving battery efficiency improvements through selective parameter changes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system performs self-service by automatically monitoring logical channel activity status and selecting appropriate DRX parameters without external intervention. The preconfigured relationship table and automated selection mechanism enable the device to manage its own power consumption and performance optimization, reducing the need for complex external control while improving battery efficiency.

Inventive Principle:
Principle #25Self-service

4Loss of time

If DRX parameters are dynamically adjusted based on logical channel activity status, then latency performance is optimized for demanding applications, but device complexity increases due to activity monitoring and parameter selection mechanisms

Engineering Contradiction:
ImprovelatencyVSAvoiddevice complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The patent segments latency optimization by logical channel, allowing different DRX parameter values to be applied based on the specific latency requirements of each channel. This segmentation enables targeted latency reduction for demanding applications without requiring complex global optimization, reducing the complexity burden while achieving improved latency performance where needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

By changing DRX parameter values based on logical channel activity status, the system optimizes latency for different traffic conditions. The preconfigured relationship table provides multiple parameter sets that can be selected based on real-time requirements, achieving low latency for urgent traffic while maintaining simple device architecture through automated parameter selection.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3573421B1Managing wireless communications
Publication Date: 2021.09.01 BLACKBERRY LTD
  • EP3573421B1 patent drawingFigure 1
  • EP3573421B1 patent drawingFigure 2
  • EP3573421B1 patent drawingFigure 3

AI summary

A wireless network, such as an LTE ("Long-Term Evolution") network, may be configured to monitor a communications interface to set an inactivity timer that, in turn, sets the operating mode of a communications interface. The operating mode may comprise a time-domain reception pattern of the wireless device. A wireless device may monitor a communications interface that includes at least a first logical channel (for example for a first application) and a second logical channel (for example for a second application). Based on monitoring the communications interface, a first activity state for the first logical channel may be determined. Also, based on monitoring the communications interface, a second activity state (e.g., an activity status) for the second logical channel may be determined. An inactivity timer used by the communications interface may be set to a first value or a second value based on the first and second activity states. The battery life of a wireless device may be preserved by setting an inactivity timer responsive to the manner in which the wireless device is being used.