An Efficient General-Purpose Mechanism for Data Gathering with Accuracy Requirement in Wireless Sensor Networks

Ryo Sugihara and Andrew Chien
CS2006-0854
April 5, 2006

A generic objective for a sensor network application is the gathering of data from a field of sensors. Because energy is often scarce in sensor networks, many techniques have been proposed to reduce data size within the network. These techniques either ignore the accuracy of the resulting data, or more often, provide no means for applications to control the resulting accuracy. However in many cases, applications have a quantitative requirement for sensor data accuracy, and the underlying system should meet that efficiently. In this paper, we describe a distributed algorithm that approximates and gathers data in an energy-efficient manner and strictly satisfies an application-provided accuracy requirement. This approximation is based on a hybrid data representation based on linear regression. A distinguishing feature of the proposed algorithm is that it absolutely does not require any models on statistical properties of data and noise, and needs only few general assumptions on sensor node topology. This feature enables the algorithm to serve as a general-purpose mechanism that can be widely used in many scenarios for data gathering-type applications. Simulation experiments with data traces from real environmental data show that it leverages the accuracy requirement to significantly reduce energy consumption.


How to view this document


The authors of these documents have submitted their reports to this technical report series for the purpose of non-commercial dissemination of scientific work. The reports are copyrighted by the authors, and their existence in electronic format does not imply that the authors have relinquished any rights. You may copy a report for scholarly, non-commercial purposes, such as research or instruction, provided that you agree to respect the author's copyright. For information concerning the use of this document for other than research or instructional purposes, contact the authors. Other information concerning this technical report series can be obtained from the Computer Science and Engineering Department at the University of California at San Diego, techreports@cs.ucsd.edu.


[ Search ]


NCSTRL
This server operates at UCSD Computer Science and Engineering.
Send email to webmaster@cs.ucsd.edu