IoT Device Interference Detection Using V2X Bounding Boxes
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Solution Overview
Problem
IoT devices with C-V2X capabilities can cause interference with a vehicle's native C-V2X TCU, leading to false alerts and increased channel busy ratio, affecting driving assistance and vehicle-to-pedestrian features.
Innovation Solution
A C-V2X congestion tracking application that creates a virtual bounding box based on vehicle location and dimensions, analyzes V2X messages to identify interfering IoT devices, and adjusts vehicle configuration to remediate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IoT devices with C-V2X capabilities are allowed to operate within the vehicle, then connectivity and communication capabilities are enhanced, but interference with the native C-V2X TCU occurs causing false alerts and increased channel busy ratio
Solution Approach 1:
The patent introduces a bounding box algorithm as an intermediary mechanism that mediates between IoT devices and the native C-V2X TCU. The algorithm creates a virtual bounding box around the vehicle and checks whether transmitting devices are located inside this box, thereby preventing interference while allowing legitimate communication. This intermediary spatial verification layer resolves the contradiction by enabling connectivity for authorized devices while blocking interfering ones.
Solution Approach 2:
The system implements feedback through continuous monitoring of V2X message transmissions and dynamic adjustment of device permissions. The TCU receives messages from IoT devices, verifies their locations using the bounding box algorithm, and provides feedback by enabling or disabling transmission permissions based on whether devices are inside the vehicle bounding box. This feedback mechanism maintains reliability while preserving connectivity for authorized devices.
2Area of stationary object
If IoT devices transmit V2X messages freely, then communication coverage is expanded, but channel busy ratio increases affecting driving assistance features
Solution Approach 1:
The patent applies local quality by differentiating transmission permissions based on spatial location. Instead of uniformly allowing or blocking all IoT device transmissions, the system creates a localized control zone (bounding box) around the vehicle. Devices outside the box are permitted to transmit freely, maintaining communication coverage, while devices inside the box are blocked to prevent channel congestion. This localized spatial differentiation resolves the contradiction between coverage and efficiency.
3Reliability
If the vehicle monitors and blocks interfering IoT devices, then reliability of C-V2X communication is improved, but device complexity increases
Solution Approach 1:
The patent uses copying by creating a virtual representation (bounding box) of the vehicle's physical space rather than directly monitoring physical device presence. The bounding box is a simplified geometric copy of the vehicle's spatial footprint that can be easily calculated and checked. This virtual copy approach maintains high communication reliability through accurate device location verification while keeping the implementation complexity low compared to direct physical monitoring methods.
Data Source
AI summary
A vehicle identifies, from V2X messages received to a vehicle-to-everything (V2X) transceiver of a vehicle, message information from the received V2X messages indicative of locations of senders of the received V2X messages. The vehicle creates a virtual bounding box surrounding the vehicle based on a current location of the vehicle and a predefined size of the vehicle. The vehicle identifies whether any of the senders are located inside the vehicle using one or more factors, the factors including whether the locations of the senders of the received V2X messages are within the virtual bounding box. The configuration of the vehicle is updated based on whether any of the senders are located inside the vehicle.