NDLI: Data dissemination to mobile sinks in wireless sensor networks: an information theoretic approach

Content Provider	IEEE Xplore Digital Library
Author	Ammari, H.M. Das, S.K.
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Texas Univ., Arlington, TX (Ammari, H.M.; Das, S.K.)
Abstract	Uncertainty is an inherent characteristic of wireless sensor networks (WSNs) due to uncertainty in wireless communication links, limited resources (e.g., energy, storage, CPU, bandwidth), mobility and topology, to name a few. Thus, resource-efficient data dissemination between source sensors and a sink becomes a challenging task, particularly if the sink is moving in a wireless sensor field. This paper proposes an energy-aware protocol, called weighted entropy data dissemination (WEDAS) for disseminating data to the mobile sink in WSNs using an information theoretic approach. The proposed protocol attempts to quantify the uncertainty of position of a mobile sink and the remaining energy uncertainty of static sensors in order to select the most appropriate ones that will act as data disseminators between static sources and the mobile sink. The WEDAS protocol favors sensor nodes whose weighted entropy with respect to their location and remaining energy is the minimum to participate in building dissemination paths between sources and the mobile sink. Specifically, we introduce the concepts of relative mobility zone of a sink, which includes its most probable future positions, and coordinator node set, which restricts the search space of candidate data disseminators, to conduct the selection process. The analytic results show that the selection of sensors with minimum weighted entropy as data disseminators depends on not only their remaining energy but also their relative positions with respect to the mobile sink, which meets our goals of extending the lifetime of WSNs by minimizing and balancing energy utilization of sensor nodes
Starting Page	8
Ending Page	314
File Size	245925
Page Count	307
File Format	PDF
ISBN	0780394658
DOI	10.1109/MAHSS.2005.1542814
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Intelligent networks Wireless sensor networks Uncertainty Protocols Sensor phenomena and characterization Entropy Batteries Monitoring Information theory
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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