V2X Misbehavior Report Prioritization Under Bandwidth Limits
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Solution Overview
Problem
V2X systems face issues with redundant and low-criticality misbehavior reports overwhelming system bandwidth, leading to inefficient use of communication and computing resources due to static priority assignment and redundant reporting.
Innovation Solution
V2X systems dynamically assign priority to misbehavior reports based on external conditions, such as anticipated vehicle responses and proximity to the misbehavior, and use probabilistic methods to determine transmission, discarding low-priority reports when bandwidth is limited.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X systems send misbehavior reports for every detected inaccurate or false information, then detection reliability is improved, but communication bandwidth is overwhelmed and system resources are wasted due to redundant reports
Solution Approach 1:
The system changes the parameter of report transmission from deterministic (always transmit) to probabilistic (transmit with probability p). Each V2X system determines a transmission probability for misbehavior reports and randomly decides whether to transmit based on this probability, thereby reducing the quantity of redundant reports while maintaining detection reliability through statistical sampling.
2Loss of information
If all V2X systems transmit misbehavior reports simultaneously, then reporting completeness is improved, but system bandwidth is overwhelmed and transmission efficiency deteriorates
Solution Approach 1:
The system implements periodic transmission opportunities where V2X systems transmit misbehavior reports at scheduled intervals rather than continuously. Combined with probabilistic selection, this creates a rhythm of transmission that distributes report traffic over time, preventing bandwidth overload while ensuring comprehensive coverage across the vehicle population.
3Device complexity
If static priority assignment is used for misbehavior reports, then system complexity is reduced, but transmission efficiency deteriorates due to inability to prioritize critical reports
Solution Approach 1:
The system transitions from static priority assignment to dynamic priority determination based on transmission probability. Each misbehavior report is assigned a probability value that reflects its criticality and the likelihood of redundant reporting, allowing the system to dynamically adjust which reports are transmitted based on current conditions without requiring complex centralized control.
Data Source
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AI summary
Various embodiments include methods and systems for vehicle-to-everything (V2X) system of a vehicle for managing transmission of misbehavior reports. Various embodiments may include generating a misbehavior report based on a detected V2X misbehavior, assigning a priority or a transmission probability to the generated misbehavior report based on an external condition related to the detected V2X misbehavior, and transmitting the misbehavior report based on the assigned priority or transmission probability.