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. 18, 2011
Filed:
Nov. 29, 2006
Yong-sun Kim, Daejon, KR;
Se-han Kim, Daejon, KR;
Woo-yong Lee, Daejon, KR;
Hyun Lee, Daejon, KR;
Yoon-mee Doh, Daejon, KR;
Cheol-sig Pyo, Daejon, KR;
Jong-suk Chae, Daejon, KR;
Yong-Sun Kim, Daejon, KR;
Se-Han Kim, Daejon, KR;
Woo-Yong Lee, Daejon, KR;
Hyun Lee, Daejon, KR;
Yoon-Mee Doh, Daejon, KR;
Cheol-Sig Pyo, Daejon, KR;
Jong-Suk Chae, Daejon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a method for managing dormant nodes in a wireless sensor network. The method includes the steps of: a) acquiring and storing information on distance and location of sensor nodes registered in a corresponding cluster among at least one cluster managed by a managing node; b) selecting a dormant object node among the sensor nodes by the managing node; c) transmitting dormant information that the dormant object node should go into a dormant state for a predetermined period through a beacon message to the dormant object node and creating a dormant node management table; and d) updating a dormant time of the dormant node management table every beacon cycle by the managing node according to setup of a dormant time central managing function and notifying dormancy expiration to the corresponding dormant node.