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1

School of Information and Communication Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon Gyeonggi-do 440-746, South Korea

2

Division of Electrical Electronic and Information Engineering, Wonkwang University, 344-2 Shinyong-dong, Iksan Chonbuk 570-749, South Korea





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Author to whom correspondence should be addressed.



Abstract Sensor nodes transmit the sensed information to the sink through wireless sensor networks WSNs. They have limited power, computational capacities and memory. Portable wireless devices are increasing in popularity. Mechanisms that allow information to be efficiently obtained through mobile WSNs are of significant interest. However, a mobile sink introduces many challenges to data dissemination in large WSNs. For example, it is important to efficiently identify the locations of mobile sinks and disseminate information from multi-source nodes to the multi-mobile sinks. In particular, a stationary dissemination path may no longer be effective in mobile sink applications, due to sink mobility. In this paper, we propose a Sink-oriented Dynamic Location Service SDLS approach to handle sink mobility. In SDLS, we propose an Eight-Direction Anchor EDA system that acts as a location service server. EDA prevents intensive energy consumption at the border sensor nodes and thus provides energy balancing to all the sensor nodes. Then we propose a Location-based Shortest Relay LSR that efficiently forwards or relays data from a source node to a sink with minimal delay path. Our results demonstrate that SDLS not only provides an efficient and scalable location service, but also reduces the average data communication overhead in scenarios with multiple and moving sinks and sources. View Full-Text

Keywords: Wireless Sensor Networks; Data Dissemination Protocol; Location-based Routing; Mobile Sink; Energy Efficiency; Lifetime Wireless Sensor Networks; Data Dissemination Protocol; Location-based Routing; Mobile Sink; Energy Efficiency; Lifetime





Autor: Hyeonjae Jeon 1, Kwangjin Park 2, Dae-Joon Hwang 1 and Hyunseung Choo 1,*

Fuente: http://mdpi.com/



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