Vehicle Multi-Band Communication for Stolen Car Tracking
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Solution Overview
Problem
Sophisticated thieves can compromise vehicle communication systems by disabling modems, transceivers, or using signal jammers to prevent stolen vehicle services from functioning, making it difficult to detect and locate stolen vehicles.
Innovation Solution
A vehicle system equipped with a transceiver supporting multiple frequency bands to communicate with external devices, a controller to generate and output notices, and sensors to capture images and biometric data, enabling communication and identification even when some frequency bands are compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single frequency band is used for communication, then the communication system is simple, but the reliability is reduced when thieves use signal jammers
Solution Approach 1:
The communication system is segmented into multiple independent frequency bands (e.g., 2.4 GHz, 5 GHz, sub-6 GHz, mmWave). Each band operates as an independent communication channel, so if one band is jammed or disabled, the system can switch to another band to maintain communication with external devices.
Solution Approach 2:
The system changes the communication parameter of frequency band dynamically. The controller selects different frequency bands based on detection results and communication needs, switching between bands to avoid jamming signals and ensure reliable data transmission of vehicle location and status information.
2Reliability
If the display can be turned off by user input, then the ease of operation is improved, but the reliability of stolen vehicle detection is reduced
Solution Approach 1:
The system applies preliminary anti-action by detecting potential theft indicators (unauthorized access, disabled communication hardware, jamming signals) before the thief can fully compromise the system. Once theft is detected, the display enters an immutable state that prevents thieves from turning it off to hide their actions or steal the device.
Solution Approach 2:
The controller preliminarily determines whether the vehicle is stolen by analyzing communication status, hardware integrity, and user authentication. Based on this preliminary determination, the display is configured to ignore subsequent user inputs, ensuring that even if thieves attempt to disable the display after stealing the vehicle, the anti-theft notices remain visible.
3Reliability
If communication hardware is disabled to prevent false alarms, then the ease of operation is improved, but the reliability of location tracking is reduced
Solution Approach 1:
The system implements feedback by continuously monitoring the status of communication hardware and detecting anomalies such as disabled modems or transceivers. When communication hardware is disabled or jamming is detected, the system receives feedback about the compromised state and automatically switches to alternative frequency bands or communication methods to maintain location tracking reliability.
Data Source
AI summary
A vehicle includes a transceiver configured to support multiple frequency bands; a display; and a controller programmed to, responsive to detecting the vehicle is stolen, generate a message including a location of the vehicle, transmit the message to one or more external devices via the transceiver using the multiple frequency bands; generate a first notice; and output the first notice via the display.