Emergency Vehicle Warning via Geo-Sector ETA Dissemination
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Solution Overview
Problem
Existing methods for warning vehicles of approaching emergency vehicles are inadequate, particularly in heavy traffic situations, leading to delayed response times and potential accidents due to insufficient warning range and accuracy, and security vulnerabilities.
Innovation Solution
A method and system that dynamically create and manage a contiguous chain of geo-sectors along the emergency vehicle's route, adjusting their size and shape based on real-time traffic conditions, to provide accurate Estimated Time of Arrival (ETA) notifications to vehicles beyond the audible and visual range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If direct V2V communication is used to inform vehicles of emergency vehicle arrival, then warning can be provided to vehicles, but the limited range (few hundred meters) does not give enough warning time to vehicles of approaching high speed emergency vehicles
Solution Approach 1:
The patent introduces an infrastructure-based communication system as an intermediary between the emergency vehicle and surrounding vehicles. Instead of relying on direct V2V communication with limited range, the infrastructure (roadside units, base stations) acts as a mediator to relay and amplify the emergency vehicle's position and ETA information, extending the warning range beyond the limitations of direct V2V communication.
Solution Approach 2:
The patent transitions from a vehicle-centric communication model to an infrastructure-centric model, adding a new dimension to the communication architecture. By deploying roadside units and utilizing infrastructure elements along the emergency vehicle's route, the system creates multiple communication nodes that collectively extend the warning coverage area and provide earlier notifications to vehicles in the emergency vehicle's path.
2Measurement precision
If direct V2V communication is used to warn vehicles, then information can be disseminated, but the ETA dissemination is inaccurate even to vehicles that may not be on the route of the emergency vehicle
Solution Approach 1:
The patent applies local quality by providing customized ETA information to different vehicles based on their specific locations and relationship to the emergency vehicle's route. Rather than broadcasting uniform information to all vehicles, the system calculates and transmits precise ETA predictions tailored to each vehicle's position, ensuring that only vehicles actually affected by the emergency vehicle receive relevant warnings with accurate timing information.
Solution Approach 2:
The system incorporates feedback mechanisms where vehicles report their position and status, and the infrastructure updates ETA calculations based on real-time data from both the emergency vehicle and surrounding traffic. This continuous feedback loop refines the accuracy of ETA predictions and ensures that information dissemination remains precise as conditions change.
3Reliability
If direct V2V communication is deployed for emergency warnings, then vehicles can be notified, but security vulnerabilities make this solution unsuitable for deployment in emergency situations
Solution Approach 1:
The infrastructure-based system acts as a trusted intermediary that validates and secures communication between emergency vehicles and surrounding traffic. The roadside units and infrastructure components provide authenticated channels for transmitting emergency warnings, eliminating the security vulnerabilities of direct V2V communication where any vehicle could potentially send false warnings or intercept legitimate ones.
Data Source
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AI summary
A method of warning target objects, TOs, in particular road vehicles, of an approaching reference object, RO, in particular an emergency vehicle, the method comprising: receiving, by a back-situation awareness function, BSAF, application (1), RO notification, RON, messages from the RO containing RO related state information, generating, by the BSAF application (1), a geo-sector, GS, chain including a number of contiguously linked geo-sector, GS, segments between a current location of the RO and a destination object, DO, specifying a destination location of the RO, calculating, by the BSAF application (1), for each of the GS segments of the GS chain an expected time of arrival, ETA, of the RO at the respective one of the GS segments, and disseminating the calculated GS segment specific ETA values via a mobile network infrastructure in all GS segments of the GS chain to be received by the TOs.