Wireless Interface Mitigation for Local Frequency Interference

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Solution Overview

Problem

Implementing multiple wireless communications technologies on a single computing device can lead to reduced performance due to local interference between their frequency bands.

Innovation Solution

A computing device with multiple communications interfaces employs a processor to detect concurrent activity and apply a prioritized sequence of mitigation actions, such as enabling bandpass filters, reducing power delivery to frequency synthesizers, and using time-division multiplexing, to minimize interference between the interfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple wireless communications technologies are implemented on a single computing device, then communication versatility is improved, but local interference between frequency bands reduces performance

Engineering Contradiction:

Improvecommunication versatilityVSAvoidcommunication performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system proactively detects when a first communications interface is transmitting data and preemptively applies mitigation actions to a second communications interface before interference occurs. This includes detecting concurrent activity and pre-enabling bandpass filters or adjusting power delivery to frequency synthesizers to prevent interference degradation of communication performance.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The processor acts as an intermediary that coordinates between multiple communications interfaces, detecting their operational states and applying mitigation actions through prioritized sequences. The system uses performance metrics as intermediaries to monitor interference levels and triggers selective mitigation only when necessary, balancing versatility with performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If mitigation actions are applied to reduce interference, then communication performance is improved, but device complexity increases

Engineering Contradiction:

Improvecommunication performanceVSAvoidcontrol complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system changes operational parameters of communications interfaces dynamically, such as adjusting power delivery to frequency synthesizers and modifying filter configurations. These parameter changes are applied selectively based on detected interference conditions, improving performance without permanently increasing device complexity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The mitigation strategy is segmented into prioritized sequences of actions, where the processor selects and applies specific mitigation measures based on the severity and type of interference detected. This segmentation allows the system to apply only necessary mitigation actions rather than always maintaining maximum complexity controls.

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively mitigates local interference, ensuring that the affected communications interface meets performance thresholds by applying targeted mitigation actions.

Implementation Method 1

enabling bandpass filters

Methodology Applied

Scientific EffectBandpass filtering: Filter (electronic)

Implementation Method 2

reducing power delivery to frequency synthesizers

Methodology Applied

Scientific EffectElectromagnetic signal generation: Electromagnetic Induction

Data Source

PatentUS12549210B2Staged mitigation of local interference to wireless communications

Publication Date: 2026.02.10 ZEBRA TECHNOLOGIES CORP

AI summary

A method includes: at a processor of a computing device having a first communications interface and a second communications interface, controlling the first communications interface to transmit data; at the processor, determining that the second communications interface is active concurrently with data transmission by the first communications interface; obtaining, at the processor, a performance metric corresponding to the second communications interface; in response to determining that the performance metric is below a threshold, selecting a mitigation action at the processor; and controlling the first communications interface according to the selected mitigation action.