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:
Aug. 20, 2013
Filed:
Aug. 21, 2008
Min Soo Kim, Daejeon, KR;
Chung-ho Lee, Daejeon, KR;
Yong Joon Lee, Daejeon, KR;
Jong-hyun Park, Daejeon, KR;
Min Soo Kim, Daejeon, KR;
Chung-ho Lee, Daejeon, KR;
Yong Joon Lee, Daejeon, KR;
Jong-Hyun Park, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
The present invention relates to a sensor network managing apparatus and a method thereof. The sensor network managing apparatus according to the present invention receives a query that includes a spatial join predicate for searching for target sensor nodes and a comparison predicate that is different for each sensor network, and generates query execution order information for searching for the target sensor nodes based on the spatial join predicate and the comparison predicate, wherein the spatial join predicate is related to a spatial location between sensor nodes respectively included in different sensor networks, and the comparison predicate are related to sensing values of sensor nodes of the sensor networks. In addition, the sensor node managing apparatus executes queries for the spatial join predicate and the comparison predicate on the plurality of sensor nodes on the basis of determined query execution order, and then extracts target sensor nodes as the query results. According to the present invention, an efficient method for searching for user-desired sensor nodes in more than two different sensor networks can be provided.