Radar Transceiver Data Modulation for Vehicle Communication
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Solution Overview
Problem
Current automotive systems lack viable options for reliable, secure, and low-latency communication between vehicles and infrastructure, posing challenges for Cooperative Driving Automation (CDA) and cybersecurity, with existing sensors not being designed for communication purposes.
Innovation Solution
Utilizing existing RADAR transceivers and transponders in vehicles to establish communication channels by modulating RF signals for data exchange, enabling vehicles to transmit and receive additional information through amplitude, phase, or frequency modulation without altering the RADAR's primary functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing RADAR systems are used for communication, then communication reliability and security are improved, but the system complexity increases due to need for signal modulation and processing
Solution Approach 1:
The RADAR transceiver is designed to perform both its original detection function and communication function. The system uses the same hardware platform to achieve radar target detection and vehicle-to-vehicle communication through signal modulation techniques, eliminating the need for separate communication systems and reducing overall system complexity.
Solution Approach 2:
The system modulates communication data onto RADAR signals by changing signal parameters such as amplitude, phase, or frequency. This allows the RADAR system to carry communication information while maintaining its primary detection capability, resolving the contradiction between communication reliability and system complexity.
2Adaptability or versatility
If dedicated communication sensors are installed, then communication capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies multi-functionality by enabling the RADAR transceiver to serve dual purposes: traditional target detection and vehicle communication. This eliminates the need for separate dedicated communication sensors, reducing system complexity and cost while maintaining full communication capability.
Solution Approach 2:
The RADAR system uses its own transmitted signals to carry communication data, eliminating the need for external communication infrastructure. The system serves its communication needs through its existing components, reducing overall system complexity.
3Productivity
If RADAR signals are modulated for communication, then data exchange efficiency is improved, but signal processing requirements increase
Solution Approach 1:
The system modulates communication data onto RADAR signals by varying parameters such as amplitude, phase, or frequency. This allows efficient data exchange using the existing RADAR signal structure, and the processing requirements are managed through algorithmic approaches that leverage the RADAR system's existing processing capabilities.
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
Enhances communication reliability and safety by leveraging existing RADAR systems for secure, low-cost, and efficient data exchange, improving vehicle positioning and hazard detection, and facilitating over-the-air software updates.
Implementation Method 1
A first apparatus (e.g., first vehicle, first roadway infrastructure, etc.) may send an RF signal, via a RADAR transceiver implemented within the first apparatus
Implementation Method 2
a transponder implemented within the second apparatus may receive the RF signal and generate a modulated return signal
Implementation Method 3
The one-way travel time is calculated from this frequency and converted to distance using the propagation speed of the RF signal in the medium (usually speed of light)
Data Source
AI summary
A communication system including a RADAR transceiver configured to be implemented in a first apparatus, a transponder configured to be implemented in a second apparatus, the first apparatus and the second apparatus configured to communicate via a method of communication. The method comprising sending, via the RADAR transceiver, a signal for detection of the transponder, receiving, via the transponder, the signal, generating, via the transponder, a response to the signal, the response including embedded information, sending, via the transponder, the response to the RADAR transceiver, receiving, via the RADAR transceiver, the response and extracting the embedded information, and executing, via the RADAR transceiver, one or more actions based at least in part on the embedded information.