The ability of properly covering the terrain under investigation and collecting measurements from redundantly sensed portions of the terrain are two important objectives for monitoring applications using wireless sensor networks. Here, a new architectural view of information retrieval for XML compliant environmental monitoring applications is introduced. The sensor network is constructed to satisfy the requirements of monitoring applications and maintained as long as the application has queries to be run on the sensor nodes. Mobile clients of the architecture (drivers), such as human beings or autonomous robots, navigate within the sensing environment and build up sensor node trees in order to effectively disseminate queries and collect the results. In the paper, viable methods are proposed for query service binding, query driven sensor network topology construction and end-to-end event delivery on dynamically maintained return paths. Simulation results considering the reliability and coverage performance of the proposed approach are provided to evaluate the new schemes.

Proceedings of The Third Annual Mediterranean Ad Hoc Networking Workshop, Med-Hoc-Net 2004, Bodrum, Turkey
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