Emergency Text Fallback After Failed PSAP Voice Calls
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Solution Overview
Problem
In emergency situations, cellular phones may fail to establish a call to emergency services due to network issues, preventing timely contact, which can lead to catastrophic outcomes.
Innovation Solution
A system and method that enables a wireless device to transmit a text message to emergency services (PSAP) via a wireless network when a call request is terminated by the network, utilizing the available data layer to convey identifying information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voice call is attempted to contact emergency services, then emergency services can be contacted prioritized by the wireless network, but the call may fail to go through due to network issues or device issues
Solution Approach 1:
The system changes the communication parameter from voice call to text message when the call connection status indicates failure. This parameter substitution allows emergency communication to continue through an alternative mode that may be more resilient to network conditions that blocked the voice call.
Solution Approach 2:
The system performs a preliminary action by sending a text message containing device identifying information immediately after call failure is detected. This preliminary communication provides emergency services with crucial identification data before further emergency actions are taken, ensuring continuous communication capability.
2Use of energy by moving object
If a text message is transmitted when voice call fails, then emergency services can be notified using less network resources, but the text message may not convey as much information as a voice call
Solution Approach 1:
The system extracts and transmits only the most critical information (device identifying information) through the text message. This extraction of essential data allows the text message to serve its purpose of identifying the emergency source without requiring the full information capacity of a voice call, thereby conserving network resources while maintaining emergency responsiveness.
Data Source
AI summary
Systems, methods and devices are provided for transmitting, by a wireless device, a call request to a public safety answering point (PSAP) using a wireless network, determining a connection status of the call request based on the wireless network and, in response to the connection status being termination by the wireless network, transmitting a text message to the PSAP using the wireless network.