V2X Message Prioritization Using Attenuation Maps
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Solution Overview
Problem
In high-load scenarios, V2X message processing systems face challenges in prioritizing signals effectively, leading to potential message loss and delayed evaluation due to increased workload and data volume, especially in autonomous vehicle networks.
Innovation Solution
A method that prioritizes messages based on signal characteristics and navigation information, using attenuation maps to determine relevance and assign processing rankings, allowing for early prioritization and filtering of messages, independent of content decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system processes all received V2X messages with equal priority, then complete message evaluation is achieved, but processing time increases and critical messages may be lost in high-load scenarios
Solution Approach 1:
The patent applies preliminary action by determining the relevance of incoming V2X messages before full decoding and processing. The system evaluates signal characteristics (strength, quality) and compares them against pre-stored attenuation maps to assess message relevance in advance, allowing critical messages to be prioritized before the processing queue becomes overloaded
Solution Approach 2:
The patent implements local quality by creating attenuation maps that divide the vehicle environment into different spatial zones with different relevance characteristics. Each zone is assigned specific attenuation values based on static objects (buildings, terrain) and dynamic objects (other vehicles, road users), allowing the system to evaluate messages based on their spatial origin and assign different processing priorities to different regions
2Productivity
If the system increases bandwidth and computing capacity to process all messages in real time, then message processing capability improves, but implementation costs increase
Solution Approach 1:
The patent applies partial action by processing only the most relevant messages in full detail while applying simplified evaluation to less critical messages. The system uses signal characteristics and attenuation map comparison to identify which messages require full decoding and evaluation versus those that can be quickly filtered or processed with reduced computational resources
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting processing priority based on signal parameters (strength, quality) and spatial parameters (position relative to vehicle, zone in attenuation map). The system changes the processing state of messages from equal priority to differentiated priority based on these parameters, allowing efficient resource allocation without increasing overall system capacity
3Productivity
If the system filters messages before full processing, then processing workload decreases, but risk of losing relevant messages increases
Solution Approach 1:
The patent applies preliminary action by performing relevance evaluation based on signal characteristics and attenuation map comparison before full message processing. This preliminary filter uses minimal computational resources to assess whether a message is likely relevant, allowing the system to prioritize critical messages for full processing while efficiently filtering obviously irrelevant ones
Solution Approach 2:
The patent implements feedback by continuously updating the attenuation map with new environmental information and using this updated map to refine message relevance assessments. The system learns from the environment and adjusts its filtering criteria based on actual signal propagation conditions, improving the accuracy of relevance determination over time
Data Source
AI summary
The invention relates to a method for classifying V2X messages and to a vehicle arranged to receive V2X messages and using the method to classify the received V2X messages. A method according to the invention for processing a message in a vehicle (100) comprises the steps of: receiving a signal (920) containing the message by means of a first antenna (111) and a second antenna (112); determining a relevance of the message (930) on the basis of signal characteristics and on the basis of navigation information of the vehicle (100); and processing the message with a ranking (940) corresponding to the determined relevance, wherein an attenuation map (300) assigns attenuation values to the vehicle environment on the basis of static objects (210) and dynamic objects (220) section by section. A vehicle according to the invention is arranged to use the relevance-based method for processing a message.