Geofence Multicast BSM Sharing for Vehicle Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for sharing basic safety message (BSM) data among vehicles via unicast messages waste significant bandwidth and resources due to the need for multiple transmissions between vehicles, leading to inefficient use of computing and networking resources.
Innovation Solution
Implementing a vehicle platform that utilizes geofence areas and multicasting to share BSM data, where primary and secondary geofence areas are determined based on vehicle quantity and speed, allowing for the generation and broadcasting of multicast messages to efficiently exchange data among neighboring vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unicast messages are used to share BSM data between vehicles, then each vehicle can receive individualized safety data, but bandwidth consumption and network resources increase significantly due to multiple redundant transmissions
Solution Approach 1:
The patent combines multiple unicast transmissions into a single multicast transmission by grouping vehicles into geofence areas. Instead of sending separate BSM data to each vehicle individually, the system consolidates transmissions at the gateway level, sending one multicast message to multiple vehicles simultaneously, thereby reducing bandwidth consumption while maintaining data delivery reliability
Solution Approach 2:
The gateway acts as an intermediary between the data source and multiple vehicles. It receives BSM data, determines appropriate geofence areas based on vehicle quantity and speed, and then multicasts the data to relevant vehicles. This intermediary approach optimizes transmission efficiency by intelligently routing data through the most efficient path
2Ease of operation
If unicast messages are used for BSM data sharing, then individual vehicle communication is maintained, but computing and networking resources are wasted due to redundant processing and multiple transmissions
Solution Approach 1:
The system merges multiple individual communication operations into a single multicast operation. By consolidating the transmission of BSM data to multiple vehicles into one action, the system maintains the ability to communicate with individual vehicles while dramatically improving resource efficiency and reducing redundant processing
Solution Approach 2:
The system dynamically adjusts the communication strategy by determining primary and secondary geofence areas based on real-time vehicle quantity and speed data. This dynamic adaptation allows the system to optimize resource allocation while maintaining effective individual vehicle communication when needed
3Reliability
If multiple geofence areas are created for comprehensive vehicle coverage, then data exchange completeness improves, but system complexity increases due to hierarchical area management
Solution Approach 1:
The system segments the coverage area into hierarchical geofence levels (primary and secondary areas) based on vehicle density and speed. This segmentation allows comprehensive data exchange by ensuring vehicles in different zones receive appropriate data, while the hierarchical structure manages complexity by organizing coverage areas in a structured, manageable way
Data Source
AI summary
A device may receive basic safety message (BSM) data from vehicles, and may determine, based on a quantity of the vehicles and speed data identified in the BSM data, a primary geofence area that includes a first set of the vehicles. The device may determine a secondary geofence area based on the speed data and the quantity of the vehicles, wherein the secondary geofence area is greater in size than the primary geofence area. The device may determine a difference between the primary geofence area and the secondary geofence area to generate a difference geofence area that includes a second set of the vehicles that is different than the first set of the vehicles. The device may generate a multicast message based on the BSM data associated with the second set of the vehicles, and may broadcast the multicast message to the first set of the vehicles.