Anonymous V2V Communication Device for Traffic Incident Alerts
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Solution Overview
Problem
Current vehicle-to-vehicle (V2V) communication techniques are inefficient, resource-intensive, and raise privacy and security concerns due to centralized control, unreliable in distributed environments, and lack standard protocols, leading to inadequate information dissemination during traffic incidents.
Innovation Solution
Implementing vehicle devices that use a Bluetooth protocol for anonymous V2V communications, employing a privacy-preserving anonymity scheme and stateless broadcast mechanism to ensure secure, timely, and efficient message exchange without relying on external factors like traffic density, by calculating rebroadcast delays and coverage areas based on distance and location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized server control is used for V2V communications, then communication coordination is improved, but privacy concerns and security risks increase due to stored logs and potential server compromise
Solution Approach 1:
The patent extracts the communication coordination function from the centralized server and redistributes it to individual vehicle devices. Each device independently determines whether to rebroadcast messages based on local conditions (coverage area calculations, distance thresholds), eliminating the need for centralized log storage while maintaining coordinated communication through distributed decision-making.
Solution Approach 2:
The patent introduces an intermediary mechanism where vehicles use calculated coverage areas and distance thresholds as mediators to decide on message rebroadcasting. This intermediary layer replaces the centralized server's direct control, allowing vehicles to autonomously participate in incident information dissemination without exposing personal data or creating single-point security vulnerabilities.
2Object-affected harmful factors
If distributed V2V communication is implemented, then privacy and security are improved, but reliability decreases due to lack of coordination and standards
Solution Approach 1:
The patent changes key parameters from centralized to distributed control: each vehicle device calculates its own coverage area based on transmission power and antenna characteristics, determines distance to incidents using signal strength metrics, and applies threshold-based decision rules. These parameter transformations enable reliable coordinated communication while maintaining distributed architecture and privacy protection.
Solution Approach 2:
The patent implements preliminary action by pre-calculating coverage areas, distance thresholds, and rebroadcasting criteria that are stored in each vehicle device. When incidents occur, vehicles can immediately apply these pre-established parameters to make coordinated rebroadcasting decisions without real-time centralized coordination, ensuring both reliability and privacy.
3Productivity
If message rebroadcasting is performed by all receiving vehicles, then information dissemination is improved, but resource waste increases due to redundant transmissions
Solution Approach 1:
The patent applies local quality by enabling each vehicle device to independently assess its local conditions (coverage area, distance to incident, message freshness) and make localized rebroadcasting decisions. This eliminates redundant transmissions from vehicles that would not add value to information dissemination while ensuring that vehicles in critical positions actively participate in message propagation.
Solution Approach 2:
The patent implements partial action by having vehicles selectively rebroadcast messages based on calculated coverage areas and distance thresholds rather than universally rebroadcasting all received messages. This partial participation strategy optimizes resource usage by involving only the subset of vehicles that can meaningfully contribute to incident information dissemination.
Data Source
AI summary
A device may receive a message identifying an incident associated with a vehicle and may forgo rebroadcast of the message when the message was previously received. The device may store the message when the message was not previously received and may calculate a distance from the device to the vehicle based on a received power associated with the message. The device may determine whether to stop rebroadcasting the message based on a stop condition and based on the distance or a current location of the device and may calculate a particular coverage area of a rebroadcasted message based on coverage areas of the device and the vehicle. The device may determine, based on not determining to stop rebroadcasting the message and based on the distance or the particular coverage area, a delay time to wait before rebroadcasting the message and may rebroadcast the message after the delay time expires.