V2X Vehicle Position Overlap Detection With Uncertainty And Motion Checks

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Solution Overview

Problem

Current techniques for detecting position overlap between vehicles in V2X communications are inaccurate due to failure to account for positioning uncertainty, multiple onboard units, differences in message generation times, and distinguishing between attacks and collisions.

Innovation Solution

The system employs four techniques to enhance position overlap detection: uncertainty measurements for position and dimension estimates, removal of overlap indications caused by duty vehicles with multiple onboard units, temporal synchronization of vehicle-based messages, and physical turbulence analysis using motion estimates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If position overlap detection is performed using basic vehicle position data, then the detection process is simple, but the accuracy is poor due to positioning uncertainty

Engineering Contradiction:

Improveposition overlap detection accuracyVSAvoiddetection system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by determining uncertainty measurements for position and dimension estimates before conducting position overlap detection. This allows the detection algorithm to account for positioning uncertainty in advance, improving accuracy without requiring complex real-time adjustments during the detection process itself.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces uncertainty measurements as an intermediary element that mediates between raw position data and the final overlap detection result. By incorporating these uncertainty measurements into the detection algorithm, the system achieves higher accuracy while maintaining manageable complexity through a structured intermediate processing step.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If multiple onboard units are used in duty vehicles, then more position data is available, but false overlap indications increase

Engineering Contradiction:

Improveposition data reliabilityVSAvoidfalse overlap indications

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts its detection criteria based on the number of onboard units detected. When multiple onboard units are identified (indicating a duty vehicle), the algorithm modifies its overlap determination logic to prevent false positives, thereby maintaining reliability while eliminating harmful false indications.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent converts the potentially harmful effect of multiple onboard units generating false overlap indications into a beneficial feature. By detecting the presence of multiple onboard units, the system identifies duty vehicles and applies specialized detection logic that actually improves overall detection accuracy by distinguishing legitimate overlaps from false indications.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Adaptability or versatility

If message generation times differ between vehicles, then communication flexibility is maintained, but detection accuracy decreases

Engineering Contradiction:

Improvemessage timing flexibilityVSAvoidposition overlap detection accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system addresses the timing issue by introducing a temporal synchronization dimension to the detection process. Rather than requiring strict synchronous message generation, the algorithm compensates for timing differences by adjusting the comparison timeframe, thus maintaining communication flexibility while restoring detection accuracy through an additional temporal adjustment layer.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Reliability

If position overlap detection is performed without considering turbulence, then processing is simpler, but collision detection reliability is reduced

Engineering Contradiction:

Improvecollision detection reliabilityVSAvoiddetection algorithm complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary analysis of motion estimates and turbulence effects before conducting the final overlap detection. By evaluating whether observed position changes are due to vehicle motion or environmental turbulence, the algorithm prepares appropriate detection criteria in advance, improving collision detection reliability without requiring complex real-time processing during the actual detection event.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12345832B2Detection of position overlap (PO) between objects

Publication Date: 2025.07.01 QUALCOMM INC

AI summary

Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, a process may include determining a potential position overlap between a first vehicle and a second vehicle and determining a characteristic of at least one of the first vehicle or the second vehicle based on information from a vehicle-based message. The process may include determining whether the potential position overlap is an actual position overlap between the first vehicle and the second vehicle based on the characteristic.