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:
Oct. 28, 2014
Filed:
Jun. 28, 2011
Suk Yon Kang, Seoul, KR;
Chae Hwan Cho, Gyeonggi-do, KR;
Seung Yoon Baek, Seoul, KR;
Hye Min Lee, Gyeonggi-Do, KR;
Chang Seok Lee, Seoul, KR;
Suk Yon Kang, Seoul, KR;
Chae Hwan Cho, Gyeonggi-do, KR;
Seung Yoon Baek, Seoul, KR;
Hye Min Lee, Gyeonggi-Do, KR;
Chang Seok Lee, Seoul, KR;
SK Telecom Co., Ltd., Seoul, KR;
Abstract
Apparatus for determining a positioning error includes: database for storing grid cells separated by each pCell ID and WLAN environment information matched to grid cells; information receiving unit for receiving terminal WLAN environment information from mobile communication terminal; identification information checking unit for checking AP identification information included in terminal WLAN environment information; triangulating unit for calculating triangulation coordinate value by performing triangulation with AP position estimation information corresponding to AP identification information; grid cell positioning unit for selecting one or more grid cells corresponding to AP identification information and calculating grid cell coordinate value based on coordinate value corresponding to grid cell selected; and error determining unit for comparing triangulation coordinate value and grid cell coordinate value and determining whether there is positioning error in any one of triangulation coordinate value and grid cell coordinate value.