earticle

영어

Wireless sensor networks have been used more and more widely with the developments of
related techniques in telecommunication and computer sciences. While sensor nodes in
wireless sensor networks have very limited memory spaces and power. In this paper, we
propose a new query aggregation method to preprocess the query predicates. The size of the
relational table can be further reduced using the aggregated query predicates. The reduced
relational table can be stored on the sensor nodes. This may cause false positive but definitely
no false negative. When the required data are sent back to the sink, we can do join operation
between the real query predicate and the relational table again, and eliminate the redundant
data.