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. 01, 2011
Filed:
May. 22, 2008
Tae Joon Park, Dejeon, KR;
SE Han Kim, Dejeon, KR;
Nae-soo Kim, Daejeon, KR;
Cheol Sig Pyo, Daejeon, KR;
Jae Yong Lee, Daejeon, KR;
Byung Chul Kim, Daejeon, KR;
Tae Joon Park, Dejeon, KR;
Se Han Kim, Dejeon, KR;
Nae-Soo Kim, Daejeon, KR;
Cheol Sig Pyo, Daejeon, KR;
Jae Yong Lee, Daejeon, KR;
Byung Chul Kim, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is an apparatus and method for controlling multi-channel access in USN-based MAC. The multi-channel access control apparatus includes a channel scanner, a control channel preoccupier, and an available channel exchanger. The channel scanner scans at least one or more available channels among the N data channels in a Tx sensor node. The control channel preoccupier preoccupies, in the Tx sensor node, the control channel through control channel sensing and back-off and broadcasts a preamble on the control channel periodically. The available channel exchanger detects, in an Rx sensor node, the available channels available to the Tx sensor node on the basis of the received preamble, selects a channel available to the Rx sensor node among the detected available channels, and transmits information about the selected channel to the Tx sensor node.