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The data stream management systems use continuous queries. The continuous query has a independent queue per each query. This situation causes to use much duplicate memories. To solve this problem, there are two resource sharing methods which are the tree based method and Pane. However, the tree based method has to retrieve all level to get query result and the Pane cannot process time-based and tuple-based...
In this paper, an energy efficient adaptive back forwarding method is proposed for spatial range query processing in ubiquitous sensor networks. In order to execute spatial range query efficiently in sensor networks, many rectangle based index methods are researched, such as SPIX method. This kind of method is efficient to transmit user queries to the queried range, but it defines the sensor nodes'...
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