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.:

US 9307432 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 05, 2016

Filed:

Jan. 03, 2013
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Weihua Gao, San Jose, CA (US);

Sai Pradeep Venkatraman, Santa Clara, CA (US);

Amir A. Emadzadeh, Santa Clara, CA (US);

Ju-Yong Do, Palo Alto, CA (US);

Gengsheng Zhang, Cupertino, CA (US);

Lionel Jacques Garin, Palo Alto, CA (US);

Sundar Raman, Fremont, CA (US);

Assignee:

Qualcomm Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 24/10 (2009.01); H04W 64/00 (2009.01); G01S 5/02 (2010.01);
U.S. Cl.
CPC ...
H04W 24/10 (2013.01); G01S 5/0242 (2013.01); H04W 64/00 (2013.01);
Abstract

Techniques are provided for providing a processing delay estimate of an access point, or turnaround calibration function (TCF), associated with round trip time (RTT) measurements. Mobile devices, access points, and/or other systems can utilize these techniques to derive processing delay from the RTT measurements. Crowdsourcing can also be used to help increase the accuracy of the processing delay estimate, which can be propagated to multiple devices.


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