Patent · US Active

Method and apparatus for processing emergency calls

US9380609B2 · kind B2 · utility

1Cited by

1References

28Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Lenaig Genevieve Chaponniere · Village of La Jolla, US
Stephen William Edge · Escondido, US
Cherng-Shung Hsu · San Diego, US
Ramachandran Subramanian · San Diego, US
Farrokh Khatibi · San Diego, US
Arungundram C. Mahendran · San Diego, US

Key dates

Filing date	Apr 30, 2014
Grant date	Jun 28, 2016
Priority date	—
Expiry date	Sep 5, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2242/04
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus initiates a call attempt in an internet protocol multimedia subsystem (IMS) based on a dialed number, the dialed number including an emergency number. The apparatus receives a session initiation protocol (SIP) message in response to the call attempt. The apparatus determines in response to the SIP message whether to retry the call attempt as a normal call in a circuit-switched (CS) domain for an operator or as an emergency call in the CS domain for the operator. In an aspect, the determining is based at least in part on either an indication in the SIP message or on a characteristic of the operator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.