Vehicle Onboard Wireless Channel Switching for Interference Mitigation

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Solution Overview

Problem

Wireless network connections in vehicles are frequently disrupted by interference from nearby WIFI networks, especially in dense urban areas, leading to 'blackout areas' where signal strength is compromised, affecting communication and data transmission.

Innovation Solution

An onboard computing device in vehicles detects potential blackout areas and dynamically switches WIFI channels to minimize interference, pre-caches data for uninterrupted service, and switches to alternative communication methods like BLUETOOTH when necessary, using a combination of GPS, interference data, and historical commuting patterns to anticipate and mitigate signal disruptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the vehicle travels through dense urban areas with many WIFI access points, then more network coverage is available, but interference from other WIFI networks increases causing blackout areas

Engineering Contradiction:

Improvenetwork coverage areaVSAvoidWIFI interference

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary actions by detecting potential blackout areas using GPS location and historical interference data before the vehicle enters them. It proactively switches WIFI channels and pre-caches data in anticipation of interference, rather than reacting after connection is disrupted. This resolves the contradiction by maintaining network coverage quality in dense urban areas through advance preparation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the WIFI channel parameter dynamically based on detected interference levels and location data. When approaching blackout areas, it switches to alternative channels that are less crowded, thereby maintaining connection quality despite the high density of access points in urban environments.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the system dynamically switches WIFI channels to avoid interference, then connection reliability improves, but system complexity increases

Engineering Contradiction:

ImproveWIFI connection reliabilityVSAvoidchannel switching mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system implements feedback by continuously monitoring WIFI signal quality, interference levels, and location data. This feedback loop enables automated channel switching decisions without complex manual configuration, improving connection reliability while keeping the control mechanism manageable through sensor-driven automation.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs self-service by automatically detecting blackout areas, selecting optimal channels, and managing data caching without user intervention. This automation reduces the perceived complexity for users while maintaining high connection reliability through continuous adaptive channel switching.

Inventive Principle:

Principle #25Self-service

3Duration of action of stationary object

If the system pre-caches data in anticipation of blackout areas, then communication continuity is maintained, but energy consumption increases

Engineering Contradiction:

Improvecommunication continuityVSAvoidenergy consumption

Core Design Contradiction:

Duration of action of stationary objectVSUse of energy by moving object

Solution Approach 1:

The system applies partial action by pre-caching only essential data needed for anticipated blackout areas, rather than caching all possible data. It selectively caches data based on predicted duration and importance, maintaining communication continuity during interference while minimizing unnecessary energy consumption from excessive data storage and transmission.

Inventive Principle:

Principle #16Partial or excessive action

4Measurement precision

If the system uses GPS and historical data to detect blackout areas, then interference prediction accuracy improves, but device complexity increases

Engineering Contradiction:

Improveblackout area detection accuracyVSAvoiddata processing system

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system merges multiple data sources (GPS location, historical interference patterns, real-time signal quality) into a unified blackout area detection mechanism. By combining these inputs through integrated processing, it achieves high prediction accuracy while managing complexity through consolidated data handling rather than separate independent systems.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9907078B2Location based wireless network optimization in embedded systems

Publication Date: 2018.02.27 ALPINE ELECTRONICS OF SILICON VALLEY INC

AI summary

Method and devices for optimizing wireless network connections in transportation vehicles are provided. An onboard computing device in a transportation vehicle identifies blackout area with severe wireless signal interference caused by nearby wireless access points in the blackout area. The wireless interference can be remedied by dynamically switching wireless channel for the in-vehicle wireless connection between the onboard computing device and a mobile device in the vehicle. The wireless interference can also be remedied by pre-caching the data needed for a content presentation during a time period when the vehicle travels within the blackout area.