TPEG Traffic Frame Conditional Insertion for Road Coverage
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Solution Overview
Problem
Current HD standards have limited bandwidth for transmitting traffic information, restricting the size of payload and making it difficult to include smaller roads in traffic data broadcasts, which limits coverage and user experience in metropolitan areas.
Innovation Solution
The system divides a primary bounding area into sub-bounding areas, allowing traffic information for larger roads to be broadcast across the entire area while limiting smaller road information to specific sub-areas, and adjusts the refresh rate of information to manage payload size within standard frame limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traffic information for all roads including smaller roads is included in broadcast area, then coverage and user experience are improved, but payload size exceeds TPEG frame limitations
Solution Approach 1:
The patent divides the broadcast area into multiple bounding areas with different road class inclusions. Each bounding area is segmented to include only roads meeting specific class criteria, allowing the system to transmit targeted traffic information for different regions without exceeding payload limits. This segmentation enables selective inclusion of smaller roads in specific bounding areas while maintaining overall coverage.
2Adaptability or versatility
If traffic information for smaller roads is included to improve coverage, then user experience is enhanced, but bandwidth consumption increases beyond available capacity
Solution Approach 1:
The patent applies different road class inclusion criteria to different bounding areas based on local conditions. Each bounding area is configured with specific road class thresholds appropriate to its characteristics, allowing smaller roads to be included in areas where they are important while excluding them in areas where major roads dominate. This local customization optimizes bandwidth usage by transmitting only relevant traffic information for each region.
3Device complexity
If single bounding area is used for broadcast, then system complexity is reduced, but coverage is restricted to larger roads only
Solution Approach 1:
The patent creates a universal bounding area structure that can serve multiple functions simultaneously. Each bounding area is designed to universally include both major and smaller roads based on configurable class criteria, allowing a single bounding area configuration to provide comprehensive coverage across different road types and regions without requiring separate bounding areas for different road classes.
Data Source
AI summary
Road vector definitions and incident data associated with a traffic incident are obtained from a traffic data source. A determination is made, based on the road vector definitions and the incident data, that the traffic incident affects travel on a particular road. A road classification of the road affected by the traffic incident is determined based on the road vector definitions. An updated version of a previous Transport Protocol Experts Group (TPEG) traffic is generated. Generating the updated version of the previous TPEG traffic frame includes conditionally inserting changed traffic data associated with the particular road into the previous TPEG traffic frame. The changed traffic data associated with the particular road includes at least a portion of the incident data. The updated version of the previous TPEG traffic frame is transmitted to a station importer for broadcast.