Geocoded Emergency Alert Filtering for Wireless Networks
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Solution Overview
Problem
Wireless Emergency Alerts (WEAs) often overshoot geographical boundaries, causing unnecessary concern and frustration for individuals outside the affected area, leading to potential disregard of important alerts.
Innovation Solution
A telecommunications system that includes a server subsystem and a lookup subsystem to manage and provide additional information to mobile devices, determining their location and preventing the presentation of irrelevant alerts by accessing a database with geocode information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If WEAs are broadcasted via designated cell sites to all mobile devices within the targeted geographical area, then the alert coverage is improved, but irrelevant alerts are delivered to devices outside the affected area causing user frustration
Solution Approach 1:
The system performs preliminary location verification before delivering the alert message. The mobile device determines its geographic location and compares it with the affected area boundaries before the alert is fully presented to the user, preventing irrelevant alerts from causing stress.
Solution Approach 2:
The system introduces an intermediary verification layer between the alert broadcast and the user interface. This intermediary checks whether the device's location falls within the affected area before allowing the alert to be displayed, filtering out irrelevant alerts while maintaining reliable delivery to affected users.
2Reliability
If WEAs are broadcasted to ensure complete coverage of the targeted area, then the alert completeness is improved, but network resources are wasted on devices outside the affected area
Solution Approach 1:
The system performs preliminary location checking before alert delivery. Mobile devices determine their locations and compare with affected area boundaries in advance, allowing the network to prevent alert delivery to devices outside the affected area, thereby saving network resources while maintaining complete coverage for affected users.
Solution Approach 2:
The system applies different alert delivery quality based on local conditions. Instead of uniform delivery to all devices in cell site coverage, the system tailors alert delivery to each device's specific location relative to the affected area, delivering alerts only to devices actually within the affected boundary.
3Adaptability or versatility
If additional location verification and database lookup are implemented, then alert relevance is improved, but system complexity increases
Solution Approach 1:
The system uses existing universal mobile device capabilities (location services, database connectivity) that are already part of standard mobile platforms. By leveraging these universal features, the system achieves alert relevance without introducing specialized complex hardware or proprietary systems.
Solution Approach 2:
The mobile device performs self-verification of its location and automatically determines whether to display the alert based on its own geographic data. This self-service approach reduces the need for complex server-side processing and location verification infrastructure.
Data Source
AI summary
A method for providing targeted alerts by a telecommunications system includes receiving, by a server subsystem, an alert message from an alert originator system. The alert message indicates an emergency associated with an area. The method includes passing the alert message to multiple mobile devices. The method also includes receiving a request message at a lookup subsystem of the telecommunications system generated by an instance of a mobile application on a mobile device based on the alert message. The method includes performing a lookup at a database for additional information associated with the alert message. The additional information identifies the geographic area associated with the emergency. The method further includes communicating the additional information to the particular mobile device thereby enabling the instance of the mobile application to perform an action related to the alert message to a user of the particular mobile device.