Abstract--P)oviding efficient &tu senices is one of the fundamental requirements for sensor networks The doto senice paradigm requires that the application submit its requests as quen'es and the sensor network transmits the requested dala to the applieotior While most &ting work in this area focus6 on data aggregation, no1 much attention has been paid lo query aggregation. For many opplic~~oons, especially ones with high query rales, query eggregation is very important. In this paper, we sludy a query aggregation-based opproach for providing efficient dola services. In particular: I ) we propose a multi-layered overlqbased framework consisting of a query manager and access points (nodes), where the former provides the query aggregation plan and the latter exefates the plan; 2) we design an eflective query aggregation algorithm to reduce the number of duplicatdwerlnpping queries and sme overall energy consumplion in the sensor network. Our performance evaluations show tho/ by applying our query aggregction dgorilhm, the overall energy consumption con be significantly reduced and the sensor network li/time can be prolonged correspondingly.
In REF , a multi-layer query aggregation method was introduced, in which the query manager aggregates queries and sends the merged query to each of the access points, where the queries are distributed among the target nodes.
Query aggregation for providing efficient data services in sensor networks
2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)
2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)
Computer Science