Mobile Terminal Emergency Call Code Acquisition

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Solution Overview

Problem

Mobile terminals cannot acquire emergency call code information when in the 'Camped on any cell' status, limiting their ability to generate emergency calls in foreign countries where the stored emergency call code information differs from local agency numbers.

Innovation Solution

A mobile communication base station transmits broadcast information containing emergency call code information to terminals in 'Camped on any cell' status, allowing them to acquire this information, even if the stored code differs from local agency numbers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If mobile terminals store emergency call code information from their home country, then they can generate emergency calls in their home country, but they cannot generate emergency calls in foreign countries where the stored code differs from local agency numbers

Engineering Contradiction:

Improveemergency call capabilityVSAvoidemergency call code information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The mobile terminal performs preliminary actions by storing multiple emergency call code information from different countries in advance, and also acquires broadcast information containing emergency call code information from the mobile communication base station before needing to make an emergency call. This allows the terminal to have emergency call capability adapted to multiple countries without waiting for actual need.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The mobile terminal is designed to universally handle emergency calls in multiple countries by acquiring and storing emergency call code information from different countries. The terminal can select appropriate emergency call code based on current location, making a single device capable of emergency calls in multiple countries rather than requiring country-specific terminals.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If mobile terminals only acquire emergency call code information when Attach or location registration succeeds, then network registration is maintained, but terminals in 'Camped on any cell' status cannot acquire emergency call code information

Engineering Contradiction:

Improvenetwork registration statusVSAvoidemergency call code acquisition

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The terminal dynamically adjusts its information acquisition strategy based on current status. When in 'Camped on any cell' status, the terminal actively acquires broadcast information containing emergency call code information from the base station. When in normal registered status, the terminal can rely on previously stored information. This dynamic approach allows emergency call code acquisition across different operational states.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The broadcast information transmitted by the mobile communication base station serves as an intermediary carrier that delivers emergency call code information to terminals regardless of their registration status. This intermediary mechanism allows terminals in 'Camped on any cell' status to acquire emergency call code information without needing successful Attach or location registration.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If mobile terminals rely on pre-stored emergency call code information, then simple terminal design is maintained, but the terminal cannot adapt to foreign countries with different emergency agency numbers

Engineering Contradiction:

Improveterminal structureVSAvoidinternational emergency call capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The mobile communication base station acts as an intermediary that provides emergency call code information through broadcast information. The terminal structure remains simple as it only needs to receive and store this broadcast information, while the base station handles the complexity of providing country-specific emergency codes. This distributes the adaptability function from the terminal to the network infrastructure.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary action by having the mobile communication base station prepare and broadcast emergency call code information in advance. The terminal acquires this information proactively rather than needing complex real-time lookup capabilities. This preliminary preparation maintains terminal simplicity while enabling international adaptability.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8447262B2Emergency call code information acquiring system

Publication Date: 2013.05.21 LENOVO (SINGAPORE) PTE LTD

AI summary

A mobile communication base station transmits broadcast information containing emergency call code information to a mobile terminal with the status “Camped on any cell” defined in the 3GPP specification “TS25.304”. Upon receiving the broadcast information, the mobile terminal acquires emergency call code information from the broadcast information. The status “Camped on any cell” means that a status in which an IC card is uninserted and the mobile terminal is communicable with the mobile communication base station from the perspective of radio wave strength or a status in which an IC card is inserted, the mobile terminal is communicable with the mobile communication base station from the perspective of radio wave strength, and an Attach or location registration to an MSC via the mobile communication base station and an RNC fails.