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:
Mar. 26, 2013
Filed:
Oct. 29, 2009
Polly Huang, Taipei, TW;
Tsung-han Lin, Taipei, TW;
I-hei Wu, Yongkang, TW;
Te-yuan Huang, Taipei, TW;
Seng-yong Lau, Yonghe, TW;
Polly Huang, Taipei, TW;
Tsung-Han Lin, Taipei, TW;
I-Hei Wu, Yongkang, TW;
Te-Yuan Huang, Taipei, TW;
Seng-Yong Lau, Yonghe, TW;
National Taiwan University, , TW;
Abstract
A frequency hopping method for localization system is aimed to overcome the degradation of location accuracy due to radio interference if there are some other radio devices using the same radio frequency as a localization system. A Packet Reception Rate (PRR) thresholding or a learning-based approach for the diagnostic test is proposed. In that, a PRR thresholding or a set of parameters trained by Hidden Markov Model (HMM) is used as a criterion to decide whether or not to hop. The proposed hopping mechanism provides an accurate and stable localization with a minimum delay.