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Data Collection Strategy in Low Duty Cycle Wireless Sensor Networks with Mobile Sink

¹ State Key Laboratory of Novel Software Technology, Nanjing University, Nanjing, China
² State Key Laboratory of Novel Software Technology, Nanjing University, Nanjing, China
³ Department of Computer Science and Technology, Nanjing University, Nanjing, China
⁴ Department of Computer Science and Technology, Nanjing University, Nanjing, China

International Journal of Communications, Network and System Sciences·Volume 10 (2017)·Pages 227–239·Published 26 May 2017·DOI10.4236/ijcns.2017.105B023

Abstract

The lifetime of wireless sensor networks can be improved by imposing low duty cycle, but doing so could not solve unbalanced energy consumption and will increase transmission latency. To avoid this, this paper gives a new method to collect data by mobile sink. The proper data collection route is selected according to the sink speed and buffer size of the sensors. The sensors only wake up when the sink approaches them. When certain sensors detect an emergency, the sink catches the message quickly and moves to the hotspot to decrease message relay in the network. The result of simulation by OPNET shows that this protocol can reduce transmission data in the network and prolong the network lifetime.

KeywordsWireless Sensor NetworksLow Duty CycleMobile Sink

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Data Collection Strategy in Low Duty Cycle Wireless Sensor Networks with Mobile Sink

Abstract

References (14)