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SenQ: An Extensible Query System for Streaming Data in Heterogeneous Interactive Wireless Sensor Networks

Wood, Anthony; Selavo, Leo; Stankovic, John
Format
Report
Author
Wood, Anthony
Selavo, Leo
Stankovic, John
Abstract
Interactive wireless sensor networks (IWSNs) manifest di- erse application architectures, hardware capabilities, and user inter- actions that challenge existing centralized [1], or VM-based [2] query system designs. To support in-network processing of streaming sensor data in such heterogeneous environments, we created SenQ, a multi- layer embedded query system. SenQ enables user-driven and peer-to- peer in-network query issue by wearable interfaces and other resource- constrained devices. Complex virtual sensors and user-created streams can be dynamically discovered and shared, and SenQ is extensible to new sensors and processing algorithms. We evaluated SenQ�s efficiency and performance in a testbed for assisted-living, and show that on-demand buffering, query caching, efficient restart and other optimizations reduce network overhead and minimize data latency.
Language
English
Date Received
2012-10-29
Published
University of Virginia, Department of Computer Science, 2008
Published Date
2008
Rights
All rights reserved (no additional license for public reuse)
Collection
Libra Open Repository

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