US 7,412,225 B2 · Apparatus and method of explicit indication of call from emergency call centre

Abstract

Herein are disclosed an apparatus and method of explicit indication of call from emergency call center. The method includes the steps of forming an emergency signal in relation to the mobile station terminated call; sending the emergency signal to the mobile station on behalf of the emergency call center; and detecting the emergency signal at the mobile station. The apparatus includes emergency signal forming means for forming an emergency signal in relation to the mobile station terminated call; emergency signal sending means for sending said emergency signal to the mobile station on behalf of the emergency call center; and emergency signal detecting means for detecting said emergency signal at the mobile station. A global emergency call information record is disclosed for use in cdma2000 type networks and the like. The apparatus and method may apply to other networks.

Claims24

Dependent claims

A method of explicitly indicating that a mobile station terminated call is from an emergency call centre, the method comprising the steps of:

maintaining an emergency callback period during which the mobile station operates in emergency callback mode;
initiating an emergency callback timer in response to an emergency call originating from the mobile station;
enabling location services on the mobile station during the emergency callback mode;
disabling location services when the emergency callback timer has expired;
receiving a mobile terminated emergency call after the emergency callback timer has expired;
and
in response to receiving the mobile terminated emergency call, enabling location services.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/591,230Filed 1 Nov 2006 · continuation

Priority

8 Dec 2003

Published

US 2007/0054653 A18 Mar 2007

Granted

12 Aug 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 12/66
Data switching networks: arrangements for connecting between networks having differing types of switching systems, e.g. gateways
H04W 4/029
Services making use of location information: location-based management or tracking services
H04W 4/90
Services specially adapted for wireless communication networks; Facilities therefor: services for handling of emergency or hazardous situations,…
H04W 76/50
Connection management: for emergency connections

Family

Application10/730,144Parent of this continuation · filed 8 Dec 2003

Application11/350,219Parent of this continuation · filed 8 Feb 2006

US 2007/0054653 A1Pre-grant publication · published 8 Mar 2007

US 7,139,549 B2Parent of this continuation

US 7,050,785 B2Parent of this continuation

US 2005/0124316 A1Published application

US 2006/0128358 A1Published application

US 7,412,225 B2This patent

From the US filing history. Foreign family members aren’t listed.

Apparatus and method of explicit indication of call from emergency call centre

Life of this patent

Apparatus and method of explicit indication of call from emergency call centre

Life of this patent

Abstract

Claims24