Multi-SIM Emergency Calling for Faster and More Reliable 5G Response
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Solution Overview
Problem
Existing wireless communication systems face challenges in enhancing the reliability and response time of emergency calls, particularly in 5G networks, as relying on a single subscription for emergency calls may not provide the desired level of reliability and response time.
Innovation Solution
A user equipment (UE) equipped with multiple subscriber identity modules (SIMs) sends parallel emergency call requests to the network through different SIMs, receiving success responses, and handles the emergency call through the SIM with the earliest successful response, canceling the other request.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If emergency call requests are sent through multiple SIMs in parallel, then reliability is improved, but device complexity increases
Solution Approach 1:
The emergency call function is segmented across multiple SIM cards, with each SIM independently capable of establishing emergency calls. This segmentation allows the system to distribute the reliability burden across multiple independent channels, so that failure of one SIM does not compromise overall emergency call capability.
Solution Approach 2:
The system performs preliminary actions by pre-configuring multiple SIM cards with emergency call capabilities before an emergency situation occurs. When emergency mode is activated, the system immediately leverages these pre-configured SIMs without requiring additional setup time, thus improving response time and reliability.
2Loss of time
If emergency call requests are sent through multiple SIMs in parallel, then response time is improved, but device complexity increases
Solution Approach 1:
Multiple SIM cards are pre-configured with emergency call capabilities before need arises. When emergency mode is triggered, the system immediately initiates parallel call attempts through all configured SIMs without sequential delay, significantly reducing session response time.
Solution Approach 2:
The system employs excessive action by simultaneously initiating emergency call requests through multiple SIMs rather than sequentially testing each one. This parallel approach ensures that the fastest available SIM establishes the call, minimizing response time even though it consumes more resources.
3Productivity
If emergency call requests are sent through multiple SIMs in parallel, then productivity is improved, but device complexity increases
Solution Approach 1:
The emergency call functionality is segmented across multiple independent SIM cards, allowing parallel connection attempts through different network operators. This segmentation enables the system to establish emergency calls more rapidly by distributing the connection effort across multiple independent channels simultaneously.
Solution Approach 2:
The system takes excessive action by launching parallel emergency call requests through all available SIMs at once, rather than methodically testing each SIM in sequence. This approach maximizes productivity by establishing the emergency connection through the fastest available path, even though it consumes additional device resources.
Data Source
AI summary
A user equipment (UE) may be equipped with multiple subscriber identity modules (SIMS) capable of supporting emergency calls. When an emergency call is detected, the UE may send emergency call requests to a network through the multiple SIMS. The UE may handle the emergency call through whichever SIM that receives the earliest successful response from the network. By utilizing multiple SIMS to establish the emergency call, both reliability and session response time may be enhanced.