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:
Feb. 26, 2019

Filed:

Jan. 17, 2017
Applicant:

Sun Patent Trust, New York, NY (US);

Inventors:

Takahisa Aoyama, Kanagawa, JP;

Jun Hirano, Kanagawa, JP;

Takashi Tamura, Kanagawa, JP;

Assignee:

Sun Patent Trust, New York, NY (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 5/00 (2006.01); H04W 36/00 (2009.01); H04L 12/801 (2013.01); H04W 28/02 (2009.01); H04W 24/10 (2009.01);
U.S. Cl.
CPC ...
H04L 5/001 (2013.01); H04L 5/0091 (2013.01); H04L 47/29 (2013.01); H04W 28/0236 (2013.01); H04W 36/0083 (2013.01); H04W 36/00835 (2018.08); H04L 5/0053 (2013.01); H04W 24/10 (2013.01);
Abstract

A communication terminal is capable of simultaneously communicating through a plurality of carriers by carrier aggregation, and the communication terminal comprises: a quality measurement unit for measuring the reception quality of a radio wave transmitted through a plurality of carriers from a base station of a connected cell to obtain a measured value; a primary carrier storage unit storing information specifying a primary carrier chosen from the plurality of carriers; a comparator for comparing a measured value of the primary carrier measured by the quality measurement unit to a threshold value; and a cell search unit for searching for another cell when the measured value of the primary carrier is less than or equal to the threshold value. Consequently, a search threshold value for carrier aggregation can be appropriately determined to perform a cell search and a quality measurement.


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