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. 02, 2012
Filed:
Aug. 28, 2009
MI Kyung OH, Gyeongsangbuk-do, KR;
Hong Soon Nam, Daejeon, KR;
Jae Young Kim, Daejeon, KR;
Joo Ho Park, Daejeon, KR;
Hyung Soo Lee, Daejeon, KR;
Mi Kyung Oh, Gyeongsangbuk-do, KR;
Hong Soon Nam, Daejeon, KR;
Jae Young Kim, Daejeon, KR;
Joo Ho Park, Daejeon, KR;
Hyung Soo Lee, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a distance and position measuring method. A distance measuring method based on packets transmitted and received between a first node and a second node obtains first timing for transmitting a first packet from the first node, second timing for receiving the first packet in the second node, third timing for transmitting a second packet corresponding to the first packet from the second node, fourth timing for receiving the second packet in the first node, fifth timing for transmitting a third packet from the second node, and sixth timing for receiving the third packet in the first node to estimate a clock frequency offset based on the obtained timings, measures a first distance and a second distance based on the clock frequency offset and some of the timings, and measures a distance between the first node and the second node based on the first distance and the second distance.