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Sensors 2016, 16(4), 449; doi:10.3390/s16040449

Tracking Mobile Sinks via Analysis of Movement Angle Changes in WSNs

1
Department of Computer Science and Engineering, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2
Shanghai Key Lab of Modern Optical Systems, Shanghai 20093, China
3
Public Experiment Center, University of Shanghai for Science and Technology, Shanghai 200093, China
4
College of Electronic and Information Engineering, Tongji University, Shanghai 201804, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Stefan Poslad
Received: 30 December 2015 / Revised: 16 March 2016 / Accepted: 22 March 2016 / Published: 29 March 2016
(This article belongs to the Special Issue Mobile Sensor Computing: Theory and Applications)
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Abstract

Existing methods for tracking mobile sinks in Wireless Sensor Networks (WSNs) often incur considerable energy consumption and overhead. To address this issue, we propose a Detour-Aware Mobile Sink Tracking (DAMST) method via analysis of movement angle changes of mobile sinks, for collecting data in a low-overhead and energy efficient way. In the proposed method, while a mobile sink passes through a region, it appoints a specific node as a region agent to collect information of the whole region, and records nodes near or on its trajectory as footprints. If it needs information from the region agent in a future time it will construct an energy efficient path from the region agent to itself by calculating its own movement angles according to the footprints, as well as getting rid of detours by analyzing these movement angles. Finally, the performance of the tracking method is evaluated systematically under different trajectory patterns and footprint appointment intervals. The simulation results consolidate that DAMST has advantages in reducing energy consumption and data overhead. View Full-Text
Keywords: wireless sensor networks; tracking; mobile sinks; trajectory; movement angles wireless sensor networks; tracking; mobile sinks; trajectory; movement angles
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Yang, G.; Xu, H.; He, X.; Wang, G.; Xiong, N.; Wu, C. Tracking Mobile Sinks via Analysis of Movement Angle Changes in WSNs. Sensors 2016, 16, 449.

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