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:
Nov. 18, 2014
Filed:
Nov. 11, 2011
Applicant:
Gen Takahashi, Tokyo, JP;
Inventor:
Gen Takahashi, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 3/02 (2006.01); G01S 5/00 (2006.01); G01S 19/46 (2010.01); G01S 19/12 (2010.01); G01S 5/02 (2010.01);
U.S. Cl.
CPC ...
G01S 19/12 (2013.01); G01S 5/0036 (2013.01); G01S 19/46 (2013.01); G01S 5/0252 (2013.01);
Abstract
A location-information discrimination method and device are provided that can accurately discriminate between locations of a mobile terminal in keeping with an actual environment. A discrimination value calculator calculates a discrimination value that is dependent on the amount of a change, from a predetermined value, in the received power of a radio signal received by a mobile terminal from a base station and on the duration of that change in the received power. The determination section compares the discrimination value with a predetermined value, thereby determining whether the mobile terminal is located indoors or outdoors.