V2V Packet Verification Using Adaptive Coding Precision
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Solution Overview
Problem
Autonomous vehicles face challenges in validating V2V messages due to transmission errors and on-board OBU analysis errors, which compromises driving security by reducing data precision.
Innovation Solution
A method that determines a target coding precision and mode for data packets, generates verification information, and transmits it alongside the data packet to ensure accurate verification by limiting the impact of uncertain values beyond the precision range, using key information identifiers and message type-specific coding rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If V2V messages are transmitted between autonomous vehicles, then wireless information interaction is enabled, but transmission errors and OBU analysis errors occur reducing data precision
Solution Approach 1:
The patent applies preliminary action by pre-defining coding precision and coding mode for data packets before transmission. The sending vehicle determines the appropriate coding precision and mode based on the data packet characteristics, then encodes the data accordingly. This pre-established coding framework ensures that even when transmission errors occur, the received data can be accurately decoded and verified, thus maintaining data precision despite the inherent errors in V2V communication.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting coding precision and coding mode parameters based on the specific data packet being transmitted. Different data packets may require different coding schemes - for example, critical safety data might use higher precision coding while less critical telemetry data uses standard coding. This adaptive parameter adjustment optimizes the balance between communication efficiency and data precision, resolving the contradiction between enabling versatile V2V communication and maintaining high data precision.
2Measurement precision
If data packets are transmitted with high precision coding, then data accuracy is improved, but transmission efficiency and processing speed decrease
Solution Approach 1:
The patent applies local quality by implementing differential coding precision for different data packets. Instead of uniformly applying high-precision coding to all data, the system selectively applies higher coding precision only to critical data packets that require high accuracy (such as safety-critical control signals), while using standard or lower-precision coding for non-critical data (such as status information or telemetry). This localized application of high precision resolves the contradiction by maintaining data accuracy where needed while preserving transmission efficiency for non-critical communications.
3Reliability
If coding precision is increased to avoid transmission errors, then verification accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies dynamics by making the coding precision and mode configurable and adaptable rather than fixed. The system can dynamically adjust the coding parameters based on the specific requirements of each data packet, the communication conditions, and the verification needs. This dynamic approach allows the system to achieve high verification accuracy when needed while avoiding unnecessary complexity in normal operating conditions, thus resolving the contradiction between reliability and system complexity.
Data Source
AI summary
A method, apparatus, device, and medium for verifying vehicle information are provided. A specific implementation scheme is: determining a target coding precision and a target coding mode of a target data packet to be transmitted; coding the target data packet based on the target coding precision and the target coding mode, to determine target verification information of the target data packet; and transmitting the target data packet and the target verification information, to instruct a receiving-end vehicle to verify the target data packet based on the target verification information.