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Title: Cushion: Autonomically Adaptive Data Fusion in Wireless Sensor Networks
Author(s): So, Jungmin; Kim, Jintae; Gupta, Indranil
Subject(s): wireless sensor networks
Abstract: Existing protocols for in-network fusion of data, in wireless sensor networks, are either single-path (i.e., tree-based) or multi-path. Tree-based fusion protocols have small message overhead but low reliability under node and link failures, while multi-path protocols have good reliability, but potentially higher overhead. This paper presents a suite of protocols, called Cushion, which automatically adapts message overhead in order to maintain a desired level of reliability. As a part of Cushion, we present (1) a simple adaptive aggregation protocol as well as (2) a node-aware adaptive aggregation protocol. Both these protocols use special control messages that enable nodes to decide when to transition between using single path and multi-path fusion approaches. The protocols span a continuous spectrum between these two approaches and can further increase reliability over multi-path approach using redundant transmissions. We present experimental results quantifying the benefits and drawbacks of using a Cushion-based approach versus both tree-based and multi-path approaches.
Issue Date: 2005-08
Genre: Technical Report
Type: Text
Other Identifier(s): UIUCDCS-R-2005-2632
Rights Information: You are granted permission for the non-commercial reproduction, distribution, display, and performance of this technical report in any format, BUT this permission is only for a period of 45 (forty-five) days from the most recent time that you verified that this technical report is still available from the University of Illinois at Urbana-Champaign Computer Science Department under terms that include this permission. All other rights are reserved by the author(s).
Date Available in IDEALS: 2009-04-20

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