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http://dx.doi.org/10.7236/JIWIT.2011.11.1.035

Energy-Efficient Data Aggregation and Dissemination based on Events in Wireless Sensor Networks  

Nam, Choon-Sung (성균관대학교 전자전기컴퓨터학과)
Jang, Kyung-Soo (경인여자대학 정보미디어학부)
Shin, Dong-Ryeol (성균관대학교 전자전기컴퓨터학과)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.11, no.1, 2011 , pp. 35-40 More about this Journal
Abstract
In this paper, we compare and analyze data aggregation methods based on event area in wireless sensor networks. Data aggregation methods consist of two methods: the direct transmission method and the aggregation node method. The direct aggregation method has some problems that are data redundancy and increasing network traffic as all nodes transmit own data to neighbor nodes regardless of same data. On the other hand the aggregation node method which aggregate neighbor's data can prevent the data redundancy and reduce the data. This method is based on location of nodes. This means that the aggregation node can be selected the nearest node from a sink or the centered node of event area. So, we describe the benefits of data aggregation methods that make up for the weak points of direct data dissemination of sensor nodes. We measure energy consumption of the existing ways on data aggregation selection by increasing event area. To achieve this, we calculated the distance between an event node and the aggregation node and the distance between the aggregation node and a sink node. And we defined the equations for distance. Using these equations with energy model for sensor networks, we could find the energy consumption of each method.
Keywords
Sensor networks; Data aggregation node; Data forwarding; Redundant prevention;
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