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:
Dec. 17, 2013
Filed:
Nov. 23, 2009
Hyunmin Jang, Gyeonggi-do, KR;
Wonjun Lee, Seoul, KR;
Donghwan Lee, Seoul, KR;
Joosik Lee, Seoul, KR;
Sukil Kang, Gyeonggi-do, KR;
Youngshin Yoon, Seoul, KR;
Junghee Han, Seoul, KR;
Hyunmin Jang, Gyeonggi-do, KR;
Wonjun Lee, Seoul, KR;
Donghwan Lee, Seoul, KR;
Joosik Lee, Seoul, KR;
Sukil Kang, Gyeonggi-do, KR;
Youngshin Yoon, Seoul, KR;
Junghee Han, Seoul, KR;
SK Telecom Co, Ltd., Jung-Ga, Seoul, KR;
Abstract
The present invention relates to a method for determining an optimal frame size for tag collision prevention in an Aloha-based RFID system in which frame sizes limited to a certain unit are used to identify tags, the method including the steps of using an RFID for: (a) calculating an estimated optimal frame value for the RFID reader identifying the tags; (b) calculating expected time delays per tag of a left-hand frame size and a right-hand frame size, which show the smallest differences with respect to the estimated optimal frame value, among the frame sizes; (c) comparing, the expected time delay per tag of the left-hand frame size with that of the right-hand frame size; and (d) determining a frame size which has a smaller expected time delay per tag, between the left-hand frame size and the right-hand frame size, to be an optimal frame size.