ITS Service Station Aggregating CPMs to Reduce Processing Load
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Solution Overview
Problem
The existing Intelligent Transportation System (ITS) communication architecture faces challenges in processing Collective Perception Messages (CPMs) during heavy traffic situations, leading to potential malfunctions or increased processing costs due to the overload of information.
Innovation Solution
A novel ITS service station that aggregates CPMs from surrounding ITS stations into prioritized aggregated CPMs, reducing the processing burden on receiving systems by combining sensor data and confidence measures, and broadcasting these aggregated messages, thereby simplifying the communication and prioritizing data with higher confidence levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual ITS-S process all CPMs independently, then each system can maintain full processing autonomy, but processing load increases significantly leading to malfunctions in heavy traffic
Solution Approach 1:
The patent segments the processing task by introducing a dedicated aggregation function that separates data collection from data processing. Individual ITS-S units only need to perform simple CPM generation and reception, while the complex aggregation and filtering operations are performed by a centralized aggregation function, thereby reducing the processing complexity of individual devices while maintaining system reliability.
Solution Approach 2:
The patent introduces an intermediary aggregation function that acts as a mediator between multiple ITS-S units. This intermediary receives CPMs from various sources, performs intelligent filtering and aggregation, then distributes the processed information back to the ITS-S units, reducing their processing burden while maintaining system-wide reliability.
2Reliability
If more processing power is allocated to handle heavy traffic CPMs, then system reliability improves, but device cost increases
Solution Approach 1:
The patent merges the processing capabilities of multiple ITS-S units into a single centralized aggregation function. Instead of each device requiring high processing power, the system combines the processing tasks of multiple units into one dedicated aggregation function, reducing the processing resources needed at each individual device while maintaining overall system reliability.
Solution Approach 2:
The aggregation function performs self-service by automatically filtering, aggregating, and prioritizing CPMs based on predefined criteria without requiring high-power processing at individual ITS-S units. This self-service approach allows individual devices to use lower-cost hardware while the system as a whole maintains high reliability through intelligent centralized processing.
3Productivity
If all CPMs are transmitted without aggregation, then complete information is available, but communication bandwidth is wasted and processing efficiency decreases
Solution Approach 1:
The patent applies partial action by selectively transmitting only the most relevant and high-priority CPMs after aggregation and filtering. Instead of transmitting all possible information, the system transmits a optimized subset that maintains processing efficiency while preserving the most critical information needed for safe and effective operation.
Solution Approach 2:
The aggregation function changes the parameters of CPMs by filtering, prioritizing, and consolidating multiple messages into fewer, more meaningful aggregated messages. This parameter transformation maintains the essential information content while improving processing efficiency by reducing the volume of data that needs to be handled by individual ITS-S units.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution significantly reduces processing load on receiving ITS systems, allowing for the use of low-cost devices without compromising safety, especially in high-traffic scenarios like intersections, by providing more reliable and trustworthy data through aggregated messages with higher confidence measures.
Implementation Method 1
a receiver having an area of radio coverage and being configured to receive a first CPM from a first ITS-S at a first position within the coverage area
Data Source
AI summary
An Intelligent Transportation System, ITS, service station is disclosed. The ITS service station has: a receiver, having an area of radio coverage, configured to receive a first Collective Perception Message, CPM, from a first ITS station at a first position within the coverage area, the first CPM including first sensor data on an object perceived by the first ITS station; an aggregator connected to the receiver and configured to aggregate said first sensor data with at least one second sensor data on the same object into a third sensor data, which second sensor data either is received via the receiver in a second CPM from a second ITS station at a second position within the coverage area perceiving the same object or is determined by a sensor of the ITS service station perceiving the same object; and a transmitter configured to broadcast said third sensor data in a third CPM.