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:
Feb. 16, 2010
Filed:
Oct. 30, 2007
Kyu Hyung Kim, Daejeon, KR;
Kee Koo Kwon, Daegu, KR;
Gwang Su Kim, Daejeon, KR;
Jang Sik Bae, Daejeon, KR;
Kyu Hyung Kim, Daejeon, KR;
Kee Koo Kwon, Daegu, KR;
Gwang Su Kim, Daejeon, KR;
Jang Sik Bae, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a method for mobile sensor node roaming in an environment of first and second adjacent wireless sensor networks having a plurality of sensor nodes. The method includes the steps of: periodically performing energy detection scan and active scan operations, at the mobile sensor node forming an association with a parent node of the first wireless network, and obtaining energy values of selected channels and link quality indications (LQIs) for the channels; when the sensor node moves to the second wireless sensor network, periodically performing energy detection scan and active scan operations, at the sensor node, and obtaining energy values of selected channels and link quality indications (LQIs) for the channels after movement; comparing, at the sensor node, the energy values and link quality indications (LQIs) of the selected channels before and after movement.