Confidence-based data management for personal area sensor networks

Authors:
Nesime Tatbul;Mark Buller;Reed Hoyt;Steve Mullen;Stan Zdonik
Affiliations:
Brown University;U.S. Army Research Institute of Environmental Medicine;U.S. Army Research Institute of Environmental Medicine;U.S. Army Research Institute of Environmental Medicine;Brown University
Venue:
DMSN '04 Proceeedings of the 1st international workshop on Data management for sensor networks: in conjunction with VLDB 2004
Year:
2004

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Abstract

The military is working on embedding sensors in a "smart uniform" that will monitor key biological parameters to determine the physiological status of a soldier. The soldier's status can only be determined accurately by combining the readings from several sensors using sophisticated physiological models. Unfortunately, the physical environment and the low-bandwidth, push-based personal-area network (PAN) introduce uncertainty in the inputs to the models. Thus the model must produce a confidence level as well as a physiological status value. This paper explores how confidence levels can be used to influence data management decisions. In particular, we look at power-efficient ways to keep the confidence above a given threshold. We also contrast push-based broadcast schedules with other schedules that are made possible by two-way communication.