The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 10, 2016

Filed:

Jun. 10, 2013
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Cherng-Shung Hsu, San Diego, CA (US);

Stephen William Edge, Escondido, CA (US);

Srinivasan Balasubramanian, San Diego, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/28 (2009.01); H04W 4/22 (2009.01); H04W 76/00 (2009.01); H04W 88/06 (2009.01);
U.S. Cl.
CPC ...
H04W 36/28 (2013.01); H04W 4/22 (2013.01); H04W 76/007 (2013.01); H04W 88/06 (2013.01);
Abstract

Certain aspects of the present disclosure relate to techniques for increasing the emergency call success rate by reducing the number of retries in a same domain. According to one aspect, a multi-mode user equipment may measure a first time period upon a first attempt of establishing an emergency call in a first RAT network. The UE may use a configurable parameter to determine a number of times that the UE may retry the emergency call in the first RAT network after expiration of the first time period without establishing the emergency call or after a failed attempt of the emergency call during the first time period. The UE may switch to a second RAT network if the UE fails in establishing the emergency call in the first RAT network after retrying the determined number of times.


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