V2I Message Prioritization Under Bandwidth and Payload Limits
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Solution Overview
Problem
Vehicle-to-infrastructure (V2I) communications face challenges due to limited bandwidth and payload constraints, making it difficult to transmit data about multiple objects in a single message, which can impact timely and accurate information delivery for safe and efficient vehicle operation.
Innovation Solution
A system that prioritizes data about objects based on collision severity and classification, allowing for the generation of messages that include higher priority data first, and subsequent messages for lower priority data, ensuring efficient use of bandwidth and timely information delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If data about multiple objects is transmitted in a single message, then information completeness is improved, but bandwidth constraints are exceeded
Solution Approach 1:
The patent segments object data into multiple priority levels (first priority, second priority, etc.) and transmits them in separate messages. High-priority objects are transmitted first to ensure critical information reaches vehicles within bandwidth constraints, while lower-priority objects are transmitted subsequently when bandwidth is available.
2Loss of information
If all object data is transmitted equally, then information fairness is improved, but transmission timeliness for critical data deteriorates
Solution Approach 1:
The patent applies different quality levels of transmission service to different objects based on their priority classification. First-priority objects receive immediate transmission with higher quality service, while second-priority objects receive transmission with lower quality service or delayed timing, optimizing overall system performance.
3Loss of information
If message payload size is increased to include more objects, then information completeness is improved, but bandwidth efficiency deteriorates
Solution Approach 1:
The patent divides the message payload into multiple segments organized by priority levels. Each message contains only the necessary number of objects that fit within bandwidth constraints, with high-priority objects in first-priority segments and lower-priority objects in subsequent segments. This segmentation maintains bandwidth efficiency while ensuring critical information is transmitted.
Data Source
AI summary
Respective priorities are assigned to data about each of a plurality of objects based on a collision severity and a classification of each of the objects. A message is generated including at least some of the data ordered according to the priorities.