ORACLE: Mobility control in wireless sensor and actor networks

Authors:
Kaoru Ota;Mianxiong Dong;Zixue Cheng;Junbo Wang;Xu Li;Xuemin (Sherman) Shen
Affiliations:
School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan and Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada;School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan and Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada;School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan;School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan;Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada;Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada
Venue:
Computer Communications
Year:
2012

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Abstract

Mobile actor is a promising tool for wireless sensor and actor networks (WSANs) provisioning energy and time efficient data collection. In this paper, we study actors' mobility control in WSANs for efficient events detecting in terms of time and energy consumption. We introduce an innovative approach ORACLE, to make actors predict events before sensors detection and migrate to the areas where the event may occur. In specific, we propose an event prediction scheme to predict an event from collected sensory data by utilizing the maximum likelihood estimation. Based on the perception, we design a control policy of actor's mobility pattern with Markov decision process. ORACLE not only enables minimal motion of actors which conserves time and energy to reach the event areas but also is energy-efficiency for sensors to reduce the forwarding range for event detection message. We evaluate the effectiveness of our proposed scheme through extensive experimental analysis.