Mobile Device Broadcast Message Type Detection and Supplemental Data Retrieval
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Solution Overview
Problem
Current emergency alert systems, such as WEA, have data size and type constraints, limiting the information that can be provided to mobile devices, and do not allow access to other applications for additional data or operating system changes.
Innovation Solution
Mobile devices are equipped with the capability to determine the type of broadcast message received and perform specific actions, such as retrieving additional data or changing operating characteristics, by executing instructions embedded in the message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If WEA message constraints are enforced, then system reliability is maintained, but information completeness deteriorates
Solution Approach 1:
The alert information is segmented into two parts: a standardized WEA message portion that maintains system reliability, and a supplemental data portion that provides additional information. The WEA message contains essential alert data within FCC constraints, while supplemental data includes extended information accessible through device applications, thus resolving the contradiction between reliability and information completeness.
Solution Approach 2:
A supplemental data mechanism acts as an intermediary between the constrained WEA message system and the need for comprehensive information. This intermediary layer allows devices to retrieve additional data from network sources or local storage based on indicators in the WEA message, providing complete information while maintaining the reliability of the core alert delivery system.
2Ease of operation
If mobile device functionality is limited to receiving and displaying messages, then device simplicity is maintained, but system versatility deteriorates
Solution Approach 1:
The mobile device's response capability is made dynamic rather than static. Devices can adapt their behavior based on the type of WEA message received, automatically performing different operations such as retrieving supplemental data, changing operating characteristics, or launching specific applications. This dynamic response mechanism maintains ease of operation while significantly enhancing system versatility.
Solution Approach 2:
The system enables mobile devices to self-serve by automatically determining message types and executing appropriate responses without user intervention. The device autonomously retrieves supplemental data, modifies its operating state, or activates relevant applications based on the alert content, thus maintaining simplicity while achieving versatility through intelligent automation.
3Reliability
If operating systems do not provide access to other applications, then system security is maintained, but information accessibility deteriorates
Solution Approach 1:
Applications are pre-configured with specific functionalities that can be triggered by WEA message types. Before an alert is received, the system prepares by establishing allowed application access rules and data retrieval pathways. When a message is received, the predetermined access permissions enable secure information sharing between the alert system and relevant applications without compromising overall system security.
Solution Approach 2:
Application access permissions are granted locally and specifically for alert-related operations rather than providing universal access. Each application receives targeted access rights based on its function and the specific alert type, allowing information accessibility for emergency responses while maintaining system security through granular, context-dependent permission control.
Data Source
AI summary
A method includes receiving a broadcast message and determining a type of the broadcast message. The operations include, if the broadcast message is a first type, retrieving data indicated by the broadcast message. The operations include, if the broadcast message is a second type, changing a device operating characteristic.