Wireless Signal Validation Using Antenna Phase Difference
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Solution Overview
Problem
Existing methods for validating wirelessly received communication signals in vehicle-to-X systems require additional sensor devices or processing-intensive decoding, making them costly and resource-intensive.
Innovation Solution
A method that uses a phase difference in communication signals received by multiple antennas to determine the direction from the receive module to the transmit module, allowing for validation of position indications without manipulation, and reduces the need for powerful processing modules by using interferometer and Vernier methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional sensor devices are used for validation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system uses its existing multiple antennas to determine direction information and validate position indications, rather than adding separate sensor devices. The antennas serve dual purposes: receiving communication signals and providing direction determination for validation.
Solution Approach 2:
The existing antenna array is made multi-functional by using it both for receiving vehicle-to-X communication signals and for determining direction of arrival to validate position information, eliminating the need for dedicated validation sensors.
2Reliability
If processing-intensive decoding methods are used, then reliability is improved, but use of energy increases
Solution Approach 1:
The system performs preliminary direction determination using phase difference calculations from multiple antennas before full decoding. This preliminary validation step filters out obviously false position indications, reducing the need for intensive decoding of all received messages.
Solution Approach 2:
Instead of fully decoding all received messages for validation, the system performs partial validation through direction determination using phase differences, which is less energy-intensive but sufficient for detecting manipulated position information.
3Measurement precision
If powerful processing modules are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system replaces complex processing module requirements with a simpler physical measurement approach using phase differences between multiple antennas. The direction determination is achieved through signal processing of phase information rather than computationally intensive algorithms.
Solution Approach 2:
The system uses the inherent phase information already present in the received signals from multiple antennas to determine direction, rather than requiring additional processing power. The existing signal structure provides the necessary information for validation.
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
This approach provides a reliable and robust validation of communication signal data content with reduced processing power requirements, offering a wider position determination angle and improved resistance to interference, while eliminating the need for additional sensors and costly processing modules.
Implementation Method 1
the direction is determined from a phase difference in the communication signal on the at least two antennas
Data Source
AI summary
A method for validating data content in a wirelessly received communication signal, wherein the data content includes at least one position statement for a transmission module sending the communication signal, wherein the communication signal is received by a reception module having at least two antennas, wherein the communication signal is used to determine a direction from the reception module to the transmission module and wherein the determined direction is used to validate the position statement. The direction is determined from a phrase difference in the communication signal at the at least two antennas. The invention further relates to a corresponding communication apparatus and to a use for the communication apparatus.