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.
Patent No.:
Date of Patent:
Aug. 13, 2013
Filed:
Oct. 31, 2006
Vineet Mittal, San Diego, CA (US);
Bhupesh Manoharlal Umatt, San Diego, CA (US);
Vineet Mittal, San Diego, CA (US);
Bhupesh Manoharlal Umatt, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
This disclosure describes techniques for efficiently handling emergency calls in a wireless communication system. The techniques are executed in a wireless communication device (WCD) that is interoperable between radio access technologies (RATs). For example, the WCD may support interoperability between the Global System for Mobile Communications (GSM) and the Universal Terrestrial Radio Access Network (UTRAN). Typically, the emergency call is redirected to another RAT or frequency following an unsuccessful emergency call. However, instead of searching only suitable cells on which to place the emergency call, a WCD that implements the described techniques searches acceptable cells of any public land mobile network and attempts to place the emergency call on the cell with the highest power. By placing the emergency call on the cell with the highest power, the techniques reduce delay in placing emergency calls by reducing the number of attempts required before successfully placing the emergency call.