Collective Perception Messaging for Bandwidth-Aware ITS Reporting
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Solution Overview
Problem
Existing Cooperative Intelligent Transport Systems (C-ITS) face challenges in efficiently reporting objects in perceived regions, leading to increased bandwidth usage and inefficient data transmission.
Innovation Solution
A method and device for updating a reporting policy of perception regions in Collective Perception Messages (CPMs) based on situation changes, prioritizing data transmission based on region utility and object behavior, and optimizing region splitting to maintain compact message size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all perceived objects in all perception regions are reported in every CPM, then complete information is provided to receiving ITS-Ss, but bandwidth usage increases and data transmission efficiency decreases
Solution Approach 1:
The patent segments perception regions into multiple regions and applies different reporting policies to each region based on its characteristics and importance. This allows selective reporting of objects in different regions, reducing overall data transmission while maintaining information completeness for critical regions.
Solution Approach 2:
The patent implements local quality by assigning different reporting frequencies and detail levels to different perception regions based on their specific characteristics. High-priority regions receive more frequent and detailed reporting, while low-priority regions use reduced reporting, optimizing bandwidth usage while preserving essential information.
2Speed
If reporting frequency is increased for all perception regions, then real-time awareness is improved, but message size and transmission load increase
Solution Approach 1:
The patent implements dynamic reporting frequencies for different perception regions based on real-time conditions such as object movement, region importance, and traffic conditions. This allows the system to maintain real-time awareness for critical regions while reducing reporting frequency for stable or less important regions, optimizing the balance between real-time performance and message size.
3Device complexity
If perception regions are not split, then simpler message structure is maintained, but reporting efficiency and bandwidth utilization decrease
Solution Approach 1:
The patent segments the overall perception area into multiple perception regions, each with its own reporting policy. This segmentation enables differentiated reporting strategies that improve reporting efficiency and bandwidth utilization while maintaining a structured and manageable message format through standardized region descriptors.
Data Source
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AI summary
According to some embodiments of the disclosure, it is provided a method of communication, in an Intelligent Transport System, ITS, comprising an ITS station, ITS-S, the method comprising, at the ITS-S, updating a reporting policy of at least one perception region of a plurality of perception regions for reporting, in successive Collective Perception Messages, CPMs, characteristics of the at least one perception region, the updating being based on a situation change involving at least one perception region of the plurality of perception regions.