Wireless Alert Deduplication Using Stored Emergency Identifiers
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Solution Overview
Problem
Existing wireless emergency alert systems often result in alert fatigue due to the overwhelming number of duplicate messages, leading to users ignoring or turning off notifications, as they receive multiple broadcasts of the same information, especially when devices move in and out of target areas or experience radio anomalies.
Innovation Solution
Implementing a unique identifier generated by the alert originator for all alert messages associated with the same event, allowing wireless devices to determine if a message is duplicative and adjust presentation accordingly, such as minimizing or omitting duplicate alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alert messages are broadcast multiple times to ensure all devices receive them, then message delivery reliability is improved, but users experience alert fatigue due to receiving duplicate messages
Solution Approach 1:
The system performs preliminary action by having devices store the unique identifier from the first alert message before subsequent broadcasts occur. This allows devices to proactively identify and filter duplicate messages, resolving the contradiction by maintaining reliable delivery (all devices get the alert) while eliminating alert fatigue (devices don't repeatedly notify users of the same alert).
Solution Approach 2:
The system uses the unique identifier as a copyable reference that devices store locally. Instead of comparing entire alert messages, devices copy and compare just the identifier, efficiently determining whether a received alert is duplicative. This resolves the contradiction by enabling reliable multi-broadcast delivery while preventing duplicate notifications through simple identifier comparison.
2Adaptability or versatility
If devices receive multiple broadcasts of the same alert message, then coverage of mobile devices is improved, but notification effectiveness deteriorates due to duplicate alerts
Solution Approach 1:
Devices perform preliminary action by storing the unique identifier from the first alert broadcast before subsequent broadcasts occur. This enables them to quickly determine if incoming alerts are duplicates, ensuring comprehensive coverage across mobile devices while maintaining notification effectiveness by suppressing redundant alerts that would otherwise diminish user response.
Solution Approach 2:
The system employs copying by having devices store a copy of the unique identifier locally. This simple copied reference allows devices to efficiently compare incoming alerts against stored identifiers, achieving broad geographic and temporal coverage while preserving notification effectiveness through intelligent duplicate detection and suppression.
3Loss of information
If the system broadcasts updated alert messages with changes, then information accuracy is improved, but users perceive more duplicates due to minor changes not affecting core alert information
Solution Approach 1:
The system performs preliminary action by having devices store the unique identifier from the original alert message. When updated alerts are broadcast, devices compare the new identifier against the stored one, accurately identifying true updates versus duplicates. This resolves the contradiction by ensuring information accuracy (all genuine updates are delivered) while eliminating perceived duplicates (minor variations don't trigger redundant notifications).
Solution Approach 2:
The system uses copying by storing a reference copy of the unique identifier locally on devices. This copied identifier serves as a reliable key for comparing updated alerts, ensuring that genuinely updated information reaches users accurately while filtering out duplicate messages that may contain minor non-critical changes, thus eliminating perceived duplicates.
Data Source
AI summary
An alert broadcast system can receive a first alert message indicating an emergency from an alert management system. The first alert message generated by an emergency alert originator can include a unique identifier associated with the emergency. The alert broadcast system can forward the first alert message to a first group of wireless devices and cause each of the first group of wireless devices to temporarily store the unique identifier. The alert broadcast system can receive a second alert message, including the unique identifier from the alert management system. The alert broadcast system can forward the second alert message to a second group of wireless devices. The respective wireless device can perform an action based on a determination that the respective wireless device has received the first alert message prior to receiving the second alert message and that the second alert message is partly duplicative of the first alert message.