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    題名: SRA: A Sensing Radius Adaptation Mechanism for Maximizing Network Lifetime in WSNs
    作者: Chao-Tsun Chang;Chih-Yung Chang;Shenghui Zhao;Jian-Cheng Chen;Tzu-Lin Wang
    關鍵詞: Area coverage;energy balance;variable sensing radius;weighted Voronoi diagram;wireless sensor networks.
    日期: 2016-01-27
    上傳時間: 2016-04-22 13:41:57 (UTC+8)
    出版者: Institute of Electrical and Electronics Engineers
    摘要: Coverage is an important issue that has been widely
    discussed in wireless sensor networks (WSNs). However, it is still a big challenge to achieve both purposes of full coverage and energy balance. This paper considers the area coverage problem
    for a WSN where each sensor has variable sensing radius. To prolong the network lifetime, a weighted Voronoi diagram (WVD) is proposed as a tool for determining the responsible sensing region of each sensor according to the remaining energy in a
    distributed manner. The proposed mechanism, called SRA, mainly consists of three phases. In the first phase, each sensor and its neighboring nodes cooperatively construct the WVD for identifying the responsible monitoring area. In the second phase, each sensor adjusts its sensing radius to reduce the overlapping
    sensing region such that the purpose of energy conservation can be achieved. In the last phase, the sensor with the least remaining energy further adjusts its sensing radius with its neighbor for maximizing the network lifetime. Performance evaluation and analysis reveal that the proposed SRA mechanism outperforms
    the existing studies in terms of the network lifetime and the degree of energy balance.
    關聯: IEEE Transactions on Vehicular Technology 65(12), p.9817-9833
    DOI: 10.1109/TVT.2016.2522645
    顯示於類別:[資訊工程學系暨研究所] 期刊論文

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