# US 2010/0167688 A1 · Arrangement at a mobile communication system

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- Number: US 2010/0167688 A1
- Document ID: US20100167688A1
- Status: Published application
- Kind: A1
- Application number: 12/466,538
- Filed: 2009-05-15
- Published: 2010-07-01
- Earliest claimed: 2000-07-21
- Inventors: Mikael Langstrom
- Web page: https://patentgrep.com/patent/US20100167688A1

## CPC

- G08B 21/028: {Communication between parent and child units via remote transmission means, e.g. satellite network}
- G08B 21/0286: {Tampering or removal detection of the child unit from child or article}
- G08B 25/08: using communication transmission lines {(G08B13/19658, G08B21/0286, G08B25/016 take precedence)}
- H04W 4/90: Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
- H04W 76/50: for emergency connections
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Mobile telephones are often used during transport involving risk, and in that case to call for help. However, the mobile telephone may be blocked by the perpetrator of a crime. The present invention solves this problem since, whether it is in use or not, a mobile telephone continuously emits a signal. An alarm will be triggered in the absence of a signal at a receiving unit, which receiving unit may be an alarm centre or an Internet system.

## Claims

### Claim 1

An arrangement in a mobile communication system for transmitting an information signal from a mobile telephone or other unit having similar capabilities, to an optional communication system such as an internet system and in that case to a predetermined information unit, characterized in that one or more of the mobile telephones continuously emits a signal such as a USSD signal that is characteristic for each mobile telephone, in that a transmitting device is applied between the central unit of the mobile system and the Internet system, and in that the information unit triggers an indication in the absence of information signal.

### Claim 2 (depends on 1)

An arrangement as claimed in claim 1, characterized in that the information signal includes affiliation data and may include positional data from an optional position system.

### Claim 3 (depends on 1)

An arrangement as claimed in claim 1, characterized in that the mobile telephone or other unit having similar capabilities that emits the signal comprises a unit that generates the continuous information signal.

### Claim 4 (depends on 3)

An arrangement as claimed in claim 3, characterized in that the unit procures positional data for each mobile telephone.