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:
Jul. 22, 2014
Filed:
Nov. 01, 2011
Uzair Ahmad, Daejeon-si, KR;
Wan Sik Choi, Daejeon-si, KR;
Sang Joon Park, Daejeon-si, KR;
Young Su Cho, Seoul, KR;
DO Hyun Kim, Daejeon-si, KR;
Dong Kyoo Kim, Yeong-gun, KR;
Sung JO Yun, Daejeon-si, KR;
Myung IN Ji, Daejeon-si, KR;
Uzair Ahmad, Daejeon-si, KR;
Wan Sik Choi, Daejeon-si, KR;
Sang Joon Park, Daejeon-si, KR;
Young Su Cho, Seoul, KR;
Do Hyun Kim, Daejeon-si, KR;
Dong Kyoo Kim, Yeong-gun, KR;
Sung Jo Yun, Daejeon-si, KR;
Myung In Ji, Daejeon-si, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A method and apparatus for estimating a position of an access point (AP) includes (a) measuring a strength of a signal, transmitted by the AP, at three or more measurement points (MPs), (b) selecting an imaginary attenuation factor, (c) calculating a range between the AP and each of the MPs on the basis of the imaginary attenuation factor and a strength of a signal measured at the MP, (d) calculating an intersecting point of ranging circles in each of which a position of the MP is a center and the range between the MP and the AP is a radius, (e) calculating a best intersecting point from among a plurality of the intersecting points obtained by repeating the steps (c) and (d) while changing the imaginary attenuation factor, and (f) estimating the best intersecting point as the position of the AP.