Concurrent Emergency Call Initiation Across Multiple Networks

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Solution Overview

Problem

Existing methods for making emergency calls on mobile phones are inflexible and time-consuming, often resulting in delays that fail to meet the requirement for rapid connection, as they sequentially attempt different call modes rather than concurrently.

Innovation Solution

A method and device that initiate multiple emergency calls simultaneously across various call modes (such as CS, LTE, and WiFi) and release unconnected calls once a connection is established, utilizing underlying protocol stacks and prioritization for efficient connection establishment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If sequential call attempt method is used, then device complexity is reduced, but connection time increases and emergency call requirement is not met

Engineering Contradiction:

Improveconnection timeVSAvoidcall initiation complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by creating multiple call objects and initiating call attempts on different networks simultaneously before any connection is established. This allows the system to explore multiple connection paths in advance, reducing the overall connection time for emergency calls.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The call initiation process is segmented into multiple independent call objects, each responsible for attempting connection on a specific network. This segmentation allows parallel execution of call attempts while maintaining manageable complexity through modular design.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If manual mode selection is used, then device complexity is reduced, but ease of operation deteriorates and user experience is poor

Engineering Contradiction:

Improveemergency call operationVSAvoidcall mode management

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system implements self-service by automatically selecting call modes and managing multiple call attempts without requiring user intervention. The device autonomously handles the complexity of multi-network call initiation while providing a simple user interface for emergency calls.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system accelerates the call connection process by simultaneously initiating multiple call attempts across different networks, effectively speeding up the connection establishment without requiring manual mode selection from the user.

Inventive Principle:

Principle #38Strong oxidants (Accelerated oxidation)

3Reliability

If single network call attempt is used, then device complexity is reduced, but reliability of emergency call connection deteriorates

Engineering Contradiction:

Improveemergency call connectionVSAvoidmulti-network call management

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system merges multiple call attempts on different networks into a unified emergency call process. By combining the efforts of multiple call objects working in parallel, the system achieves higher reliability for emergency call connections while managing complexity through coordinated resource release.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system changes the parameter of network selection from sequential to parallel by initiating call attempts on multiple networks simultaneously. This parameter change increases the probability of successful emergency call connection while maintaining manageable complexity through standardized call object design.

Inventive Principle:

Principle #35Parameter changes

4Speed

If concurrent call attempts on multiple networks are initiated, then connection speed is improved, but device complexity and resource consumption increase

Engineering Contradiction:

Improveconnection speedVSAvoidcall object management

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The system discards unused call objects and releases resources associated with failed call attempts as soon as a successful connection is established. This principle allows concurrent call attempts to improve connection speed while recovering resources to manage device complexity.

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The system dynamically adjusts the number of active call objects based on connection status. When a connection is successful, the system dynamically releases other call objects, optimizing resource usage while maintaining the ability to attempt concurrent connections for improved speed.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS10798752B2Method and device for executing emergency call

Publication Date: 2020.10.06 HUAWEI TECH CO LTD

AI summary

A method includes: receiving an emergency call request; initiating, according to the emergency call request, n emergency calls by simultaneously using n call modes, where n is an integer not less than 2; and when a connection is established for one of the n emergency calls, releasing other emergency calls for which no connection has been established. By means of the embodiments of the present invention, multiple emergency calls may be simultaneously made, and when any one of the multiple emergency calls is connected, other emergency calls are released, reducing an emergency call time.