V2X Location Verification with Signed Peer Traffic Data
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Solution Overview
Problem
Existing intelligent transportation systems face challenges in verifying the location of traffic participants without relying on trust from the service or application, especially in V2X communication scenarios where anonymity and data protection are crucial.
Innovation Solution
A method where a traffic participant broadcasts a location verification request with a message-ID, and other participants within range provide signed location and time information, which is then verified by an application or service using anonymized certificates, allowing location verification without direct trust from the service or application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If location verification is performed through direct trust from service or application, then verification simplicity is improved, but security and reliability deteriorate because the service or application must trust the traffic participant without proof
Solution Approach 1:
The patent introduces an intermediary verification mechanism where other traffic participants (VTx) act as mediators to verify the location of VT1. Instead of direct trust between service and VT, the system uses V2X broadcast messages and cryptographic signatures from multiple independent participants to establish location verification, resolving the contradiction between simplicity and security
Solution Approach 2:
The system implements feedback through the collection and evaluation of location verification answers from multiple traffic participants. The service receives feedback in the form of signed location data from various VTx, which is then evaluated to determine VT1's location, providing reliable verification without requiring direct trust
2Reliability
If anonymized certificates are used for V2X communication, then data protection and anonymity are improved, but the ability to verify identity and location deteriorates
Solution Approach 1:
The patent segments the verification process into separate cryptographic components: anonymized certificates for identity protection and cryptographic signatures for location verification. This segmentation allows the system to maintain anonymity while still enabling precise location verification through mathematical proof without revealing personal identity information
Solution Approach 2:
The system changes the verification parameter from identity-based trust to location-based cryptographic proof. By using signed location data and time-stamped messages, the system verifies location accuracy without requiring knowledge of the participant's true identity, maintaining anonymity while ensuring verification precision
3Measurement precision
If multiple traffic participants provide location verification data, then location accuracy is improved, but data transmission complexity and processing time worsen
Solution Approach 1:
The patent extracts only the essential verification data from each traffic participant: message-ID, location information, time information, and cryptographic signature. By taking out only these necessary elements and excluding redundant information, the system achieves accurate location verification while minimizing data transmission complexity and processing requirements
Data Source
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AI summary
Method for a location verification in an intelligent transportation system (ITS) by broadcasting vehicle to everything (V2X) communication, wherein a number of traffic participants are registered in the intelligent transportation system (ITS), wherein a first traffic participant (VT1) uses a service made available by an application (POS-App) of a provider and wherein the service needs a location verification of the first traffic participant (VT1), wherein the first traffic participant (VT1) broadcasts a vehicle to everything (V2X) message with a location verification request and a message-ID (ID), wherein at least one second traffic participant (VTx) receives the message broadcasted by the first traffic participant (VT1), wherein the second traffic participant (VTx) generates data for an location verification of the first traffic participant (VT1), the data include the message-ID (ID), a location information of the second traffic participant (POS_VTx) and a time information (t_VTx), wherein the second traffic participant (VTx) signs the data with his VTx-certificate (Cert_VTx) provided in the intelligent transportation system (ITS), wherein the second traffic participant (VTx) broadcasts an answer (N-VTx) to the location verification request of the first traffic participant (VT1), including the data, the signature (SIG_VTx) of the data and the VTx-certificate (Cert_VTx) of the second traffic participant (VTx), wherein the first traffic participant (VT1) receives the answer (N-VTx) broadcasted by the second traffic participant (VTx), wherein the first traffic participant (VT1) sends the answer (N-VTx) of the second traffic participant (VTx) to the application (POS-App) of the provider and wherein the application (POS-App) of the provider receives the answer (N-VTx) of the second traffic participant (VTx) sent by the first traffic participant (VT1) and the location position of the first traffic participant (VT1) is verificated by evaluating the answer (N-VTx) of the second traffic participant (VTx).