Scheduled System Maintenance:
On May 6th, single article purchases and IEEE account management will be unavailable from 8:00 AM - 12:00 PM ET (12:00 - 16:00 UTC). We apologize for the inconvenience.
By Topic

Considering Link Qualities in Fault-Tolerant Aggregation in Wireless Sensor Networks

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)

The goal of Wireless Sensor Networks is to extract useful global information from individual sensor readings, which are typically collected and aggregated over a spanning tree. However, the spanning tree structure is not robust against communication errors; a low-quality (i.e., high-error-rate) wireless link close to the tree root may result in a high rate of global information loss. Therefore, many schemes have been proposed to achieve fault-tolerant aggregation. Intuitively, using timely link-quality information, which is gathered by continuous monitoring and error-rate measurement of network links, improves the performance of fault-tolerant aggregation schemes. In this paper, we show that this intuition is not always true. In particular, we show that using link-quality information in an intuitive but wrong way results in degraded performance in some schemes, and therefore, care should be taken in using link-quality information. We also show that some schemes make better usage of link-quality information than others, and some schemes are more robust to errors in link-quality estimation than others. We support our findings by an extensive simulation study, and we focus on the (more general) class of fault-tolerant duplicate-sensitive aggregation schemes.

Published in:

Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE

Date of Conference:

Nov. 30 2009-Dec. 4 2009