Emergency Call Termination Confirmation and Continuity Logic
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Solution Overview
Problem
Emergency calls made inadvertently on mobile devices often result in unnecessary resource allocation by Public Safety Answering Points (PSAPs) due to accidental hang-ups or premature disconnections, leading to potential misallocation of emergency services.
Innovation Solution
The implementation of an Emergency Communication Handler in electronic devices that requests confirmation for call termination, delays termination until a predetermined trigger is met, and automatically handles subsequent incoming calls to ensure continuity of emergency services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device automatically terminates an emergency call upon user request, then the ease of operation is improved, but the reliability deteriorates due to potential inadvertent hang-ups
Solution Approach 1:
The system implements a confirmation mechanism where the device requests user confirmation before terminating an emergency call. This feedback loop ensures that the termination action is intentional, preventing inadvertent hang-ups while maintaining ease of operation for legitimate termination requests.
Solution Approach 2:
The device performs a preliminary confirmation action before executing the call termination. By requiring user confirmation in advance, the system prepares for the termination action only when explicitly authorized, thereby preventing accidental disconnections while preserving operational simplicity.
2Reliability
If the device remains operable to receive subsequent incoming calls after emergency call termination, then the reliability is improved for emergency service continuity, but the device complexity increases
Solution Approach 1:
The device applies a specific operational mode locally to the call handling function after emergency call termination. Instead of changing the entire device state, only the telephony subsystem is configured to automatically answer incoming calls for a predetermined period, minimizing overall device complexity while ensuring emergency service continuity.
Solution Approach 2:
The device dynamically adjusts its call handling behavior temporarily after an emergency call terminates. The system transitions to a special state where incoming calls are automatically answered, then returns to normal operation after a predetermined time period, providing adaptive reliability without permanent complexity increases.
3Reliability
If the device delays call termination until a predetermined trigger is met, then the reliability is improved by preventing premature hang-ups, but the loss of time increases due to delayed disconnection
Solution Approach 1:
The system uses feedback from user confirmation or network disconnect messages as triggers to initiate call termination. This ensures that calls are only delayed when necessary (awaiting user confirmation or network indication), rather than imposing unnecessary delays, thus balancing reliability improvement with time efficiency.
Solution Approach 2:
The device applies a preliminary check mechanism that prevents premature termination by waiting for appropriate triggers (user confirmation or network disconnect message). This anti-action countermeasure ensures that calls are not hung up inadvertently while minimizing delays by only waiting for essential confirmation signals.
Data Source
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AI summary
There are disclosed techniques for handling emergency calls in an electronic device, such as a mobile telephone (30). For example, in one embodiment, upon receipt of a request at the user-interface (40) of the device (30) to terminate an emergency call, the device (30) first requests confirmation that the call should be terminated. In another embodiment, once the emergency call is terminated, if an incoming call request is subsequently received within a predetermined period of time, the device (30) establishes a voice connection with the incoming caller regardless of whether the device (30) is instructed to establish the voice connection. In another embodiment, once the emergency call is terminated, the device (30) remains operable to receive a subsequent incoming call regardless of whether the device (30) is instructed otherwise.