Vehicle Wireless Emergency Alert Processing
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Solution Overview
Problem
Current wireless emergency alert systems are limited in their ability to provide comprehensive and location-specific alerts to vehicles, lacking integration with vehicle computer systems to offer detailed navigation and safety instructions within alert areas.
Innovation Solution
Vehicle computer systems are equipped with the capability to autonomously receive and process wireless emergency alerts, using geographical coordinates to determine vehicle location and generate maps and driving instructions to avoid or exit alert areas, providing visual and audible alerts without the need for a separate mobile device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless emergency alerts are broadcast to all mobile devices in cells touching or overlapping with alert areas, then alert dissemination coverage is improved, but alert precision and relevance to actual danger zones deteriorates
Solution Approach 1:
The patent applies local quality by providing different alert information to different devices based on their specific location within alert areas. Devices receive customized alert messages containing only the coordinates of alert areas relevant to their current position, rather than all alert areas. This localized approach improves precision while maintaining comprehensive coverage across multiple alert zones.
Solution Approach 2:
The patent segments the alert area information by dividing the complete set of alert area coordinates into multiple subsets, with each subset containing only the coordinates relevant to a specific device's location. This segmentation allows the system to maintain comprehensive coverage while improving precision by delivering tailored alert information to each device based on its geographical position.
2Measurement precision
If device-based geo-fencing is implemented to tighten alert presentation to devices within alert area boundaries, then alert precision is improved, but system complexity increases
Solution Approach 1:
The patent implements self-service by enabling mobile devices to autonomously determine their location relative to alert areas using their own GPS and processing capabilities. Each device independently compares its coordinates with alert area boundaries and determines whether to display alerts, eliminating the need for complex server-side geo-fencing infrastructure while achieving precise location-based alert delivery.
Solution Approach 2:
The patent inverts the traditional approach by having devices independently perform location-based filtering rather than relying on network-controlled geo-fencing. Instead of the network managing complex geo-fencing logic, the burden is shifted to individual devices which use their built-in location capabilities to self-determine alert relevance, simplifying the overall system architecture.
3Productivity
If alert text is limited to 360 alphanumeric characters per WEA standard, then transmission efficiency is improved, but information completeness deteriorates
Solution Approach 1:
The patent transitions from a single-dimension text-based alert system to a multi-dimensional information system by incorporating graphical elements (maps, icons, images) alongside compressed text. This dimensional expansion allows comprehensive emergency information to be conveyed through visual representations that bypass character limitations while maintaining transmission efficiency through selective use of compact graphical data.
Solution Approach 2:
The patent extracts essential alert information from the complete message and delivers it through multiple channels: compressed text for critical details, graphical maps for location context, and icons for quick visual identification. This extraction strategy separates information by urgency and type, maintaining transmission efficiency for text while using graphical elements to convey additional contextual information that would exceed character limits.
Data Source
AI summary
A computer-implemented method of receiving and processing a wireless emergency alert at a vehicle comprises receiving, at a computer system of the vehicle, the wireless emergency alert over a wireless communication network. The wireless emergency alert may include an alert message and geographical coordinates defining one or more alert areas associated with the emergency alert. The method may further include comparing, via the vehicle computer system, a current location of the vehicle with the geographical coordinates to determine whether the vehicle is within or near the alert area(s) and, if the vehicle is within or near the alert area(s), generating via the computer system a map illustrating the current location of the vehicle with respect to the alert area(s), and displaying the map at a display screen of the vehicle.