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 9137775 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 15, 2015

Filed:

Oct. 30, 2013
Applicant:

Mediatek Inc., Hsin-Chu, TW;

Inventors:

Tsung-Yu Chiou, Zhudong Township, Hsinchu County, TW;

Yuan-Wen Ting, Taichung, TW;

Assignee:

MEDIATEK INC., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 24/00 (2009.01); H04W 64/00 (2009.01); H04L 29/08 (2006.01); H04W 4/02 (2009.01); G01S 5/02 (2010.01);
U.S. Cl.
CPC ...
H04W 64/00 (2013.01); G01S 5/0252 (2013.01); H04L 29/08657 (2013.01); H04W 4/02 (2013.01);
Abstract

A communications apparatus is disclosed. A receiving module receives an observed time difference of arrival (OTDOA) request and a search list of cells provided by a network at a second time point. A comparing module compares the received search list to a stored search list of cells which is received at a first time point and stored in a database. A searching module searches at least one of the cells from the received search list by using different search ranges adjusted according to the comparison result, and stores the at least one of the cells in the database. A measuring module performs OTDOA measurements by detecting positioning reference signals (PRS) from the at least one of the cells.


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