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:
Dec. 16, 2014

Filed:

May. 26, 2011
Applicants:

Weidong HU, Austin, TX (US);

Inderpreet Singh Ahluwalia, Austin, TX (US);

Yung Choi-grogan, Issaquah, WA (US);

Inventors:

Weidong Hu, Austin, TX (US);

Inderpreet Singh Ahluwalia, Austin, TX (US);

Yung Choi-Grogan, Issaquah, WA (US);

Assignee:

AT&T Mobility II LLC, Atlanta, GA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 72/00 (2009.01); H04M 1/00 (2006.01); H04W 36/00 (2009.01); H04W 76/04 (2009.01); H04W 76/02 (2009.01);
U.S. Cl.
CPC ...
H04W 36/0022 (2013.01); H04W 76/046 (2013.01); H04W 76/027 (2013.01);
Abstract

The disclosed subject matter relates to an architecture that can provide enhancement with respect to circuit switched fall back. In particular, the architecture can reduce the signaling and delay of conventional systems that are necessitated by establishing a radio resource control connection prior to establishing the circuit switched fall back connection. For example, when user equipment is not in a radio resource control connected state at the time of a circuit switched fall back call, the radio resource control connection can be at least partially avoided by responding to a radio resource control connection request message with a radio resource control connection reject message that includes target cell reselection information.


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