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Sensors 2014, 14(8), 15163-15181; doi:10.3390/s140815163

An Energy Efficient Distance-Aware Routing Algorithm with Multiple Mobile Sinks for Wireless Sensor Networks

1
College of Information Engineering, Yangzhou University, Yangzhou 225009, China
2
School of Software, Dalian University of Technology, Dalian 116620, China
3
Department of Energy IT, Gachon University, Seongnam 461-701, Korea
4
Department of Energy Grid, Sangmyung University, Seoul 110-743, Korea
*
Author to whom correspondence should be addressed.
Received: 20 June 2014 / Revised: 7 August 2014 / Accepted: 13 August 2014 / Published: 18 August 2014
(This article belongs to the Section Sensor Networks)
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Abstract

Traffic patterns in wireless sensor networks (WSNs) usually follow a many-to-one model. Sensor nodes close to static sinks will deplete their limited energy more rapidly than other sensors, since they will have more data to forward during multihop transmission. This will cause network partition, isolated nodes and much shortened network lifetime. Thus, how to balance energy consumption for sensor nodes is an important research issue. In recent years, exploiting sink mobility technology in WSNs has attracted much research attention because it can not only improve energy efficiency, but prolong network lifetime. In this paper, we propose an energy efficient distance-aware routing algorithm with multiple mobile sink for WSNs, where sink nodes will move with a certain speed along the network boundary to collect monitored data. We study the influence of multiple mobile sink nodes on energy consumption and network lifetime, and we mainly focus on the selection of mobile sink node number and the selection of parking positions, as well as their impact on performance metrics above. We can see that both mobile sink node number and the selection of parking position have important influence on network performance. Simulation results show that our proposed routing algorithm has better performance than traditional routing ones in terms of energy consumption. View Full-Text
Keywords: wireless sensor networks; mobile sink; distance aware; energy; lifetime wireless sensor networks; mobile sink; distance aware; energy; lifetime
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Wang, J.; Li, B.; Xia, F.; Kim, C.-S.; Kim, J.-U. An Energy Efficient Distance-Aware Routing Algorithm with Multiple Mobile Sinks for Wireless Sensor Networks. Sensors 2014, 14, 15163-15181.

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