1. Ad-Hoc Query Processing Architecture Ross Rosemark

2. Goal Design query processing architecture for sensor networks Minimize energy consumption

3. Existing Query Processing Architectures Fixed Query Processing Architectures –Infrastructure is built on entire network –Queries are submitted to infrastructure –Infrastructure processes query

4. Argue This approach utilizes excessive energy –Deriving infrastructure –Performing metadata collection –Performing query execution –Performing result collection Show that the problem with this approach is that the infrastructure is not designed to support a query in the network

5. Propose Ad-Hoc query processing architecture –Build separate infrastructure that is designed to support each query in the sensor network Protocol –Query submitted by user –Infrastructure built to support query

6. Problems Ad-Hoc query processing architecture utilizes excessive energy deriving the infrastructure

7. Propose Hybrid Query Processing Architecture –Mix between Ad-hoc and Fixed query processing architectures Build only a partial infrastructure in an ad- hoc manner.. Some infrastructure is built in a fixed manner