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. 27, 2012
Filed:
Jan. 08, 2008
Jagannathan Sarangapani, Rolla, MO (US);
Anil Ramachandran, Rolla, MO (US);
Can Saygin, San Antonio, TX (US);
Kainan Cha, Rolla, MO (US);
Jagannathan Sarangapani, Rolla, MO (US);
Anil Ramachandran, Rolla, MO (US);
Can Saygin, San Antonio, TX (US);
Kainan Cha, Rolla, MO (US);
The Curators of the University of Missouri, Rolla, MO (US);
Abstract
A decentralized RFID system and method provides a decentralized power control scheme for adaptively adjusting the power of a RFID reader in a network of readers communicating with an RFID tag. The transmission power of each reader in a dense network environment is controlled as a function of interference sensed from other readers in the network and a current SNR (SNR) of a backscatter signal received from the tag. If the current SNR is above a required SNR, transmission power of the reader is reduced, which results in lower interference for other RFID readers. Similarly, if the expected SNR is below the required threshold, power is increased sufficiently to ensure that the target or required SNR is achieved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile