Filtering Infrastructure Messages in Vehicular Ad Hoc Networks
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Solution Overview
Problem
In vehicle ad hoc networks, the processing of infrastructure description messages is computationally intensive, leading to potential delays in processing safety-related messages during high-load situations, and existing solutions either require excessive computing resources or are economically unfeasible.
Innovation Solution
A method to filter out infrastructure description messages based on predetermined criteria such as redundancy, relevance, and priority, using the message header information to determine the need for a reaction, thereby reducing the computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all infrastructure description messages are processed, then complete information about the vehicle environment is obtained, but computational load increases excessively leading to delays in processing safety-related messages
Solution Approach 1:
The patent applies preliminary action by evaluating and filtering infrastructure description messages before they enter the main processing queue. The filter device assesses messages based on predetermined criteria (redundancy, relevance, priority) and selectively discards non-essential messages ahead of time, ensuring that only critical messages proceed to full processing. This prevents computational bottlenecks while maintaining reliability for safety-critical communications.
2Loss of time
If computing resources are increased to process all messages, then message processing delay is reduced, but system cost increases making it economically unfeasible
Solution Approach 1:
The patent extracts and removes non-essential infrastructure description messages from the processing stream using a filter device that evaluates messages against predetermined criteria. By taking out redundant, irrelevant, or low-priority messages before they consume computational resources, the system achieves timely processing of critical messages without requiring excessive computing power, thereby avoiding high implementation costs.
3Productivity
If infrastructure description messages are filtered out, then computational load is reduced, but information completeness may be compromised
Solution Approach 1:
The patent applies local quality by applying different filtering criteria to different types of infrastructure description messages based on their specific characteristics. Messages are evaluated based on redundancy, relevance to the receiving vehicle, and priority levels. Critical safety-related information is preserved and processed, while non-essential messages are filtered out. This selective approach maintains information completeness for what matters while reducing computational load.
Data Source
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AI summary
The invention relates to a method for filtering infrastructure description messages (17) packed in data packages (43), said messages being transmitted in a vehicular ad hoc network (1), along with positional information messages (17) for the localisation of individual participating nodes (3, 5, 8), in order to describe the status of the vehicular ad hoc network (1) and/or a street (2) on which the participating nodes (3, 5, 8) are located. The method comprises the following steps: receiving one of the infrastructure description messages (17) at a participating node (3, 5, 8); evaluating the received infrastructure description message (17) as to whether a response is required; and filtering the evaluated infrastructure description message (17) based on a predetermined criterion for whether a response is required.