Processing Multiple Aggregation Queries in Geo-Sensor Networks
Conference Proceeding Article
To process aggregation queries issued through different sensors as access points in sensor networks, existing algorithms handle queries independently and perform in-network aggregation only at the query time. As a result of ad-hoc and independent execution of queries, no partial result is sharable and reusable among the queries. Consequently, scarce sensor network resources can be easily overconsumed, particularly, those sensors commonly accessed by queries. In this paper, we address this issue by examining strategies to maintain Materialized In-Network Views (MINVs) that pre-compute and store commonly used aggregation results in the sensor network. With MINVs, aggregated sensed results for some spatial regions are available and sharable to queries. Thus, the number of sensor accesses is greatly reduced. Through simulations, we validate the effectiveness of proposed strategies.
Databases and Information Systems | Numerical Analysis and Scientific Computing
Data Management and Analytics
Database Systems for Advanced Applications: 11th International Conference, DASFAA 2006, Singapore, April 12-15, 2006. Proceedings
City or Country
LEE, Ken C. K.; LEE, Wang-chien; ZHENG, Baihua; and Winter, Julian.
Processing Multiple Aggregation Queries in Geo-Sensor Networks. (2006). Database Systems for Advanced Applications: 11th International Conference, DASFAA 2006, Singapore, April 12-15, 2006. Proceedings. 3882, 20-34. Research Collection School Of Information Systems.
Available at: http://ink.library.smu.edu.sg/sis_research/384