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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/73034

    Title: A Data-Centric Mechanism for Wireless Sensor Networks with Weighted Queries
    Authors: Hung, Li-Ling;Chang, Sheng-Wen;Chang, Chih-Yung;Chen, Yu-Chieh
    Contributors: 淡江大學資訊工程學系
    Date: 2009-12
    Issue Date: 2011-10-24 11:25:33 (UTC+8)
    Publisher: Taipei : Institute of electrical and electronics engineers (IEEE)
    Abstract: Wireless sensor networks (WSNs) are characterized by their low bandwidth, limited energy, and largely distributed deployment. To reduce the flooding overhead raised by transmitting query and data information, several data-centric storage mechanisms are proposed. However, the locations of these data-centric nodes significantly impact the power consumption and efficiency for information queries and storage capabilities, especially in a multi-sink environment. This paper proposes a novel dissemination approach, which is namely the dynamic data-centric routing and storage mechanism (DDCRS), to dynamically determine locations of data-centric nodes according to sink nodes' location and data collecting rate and automatically construct shared paths from data-centric node to multiple sinks. To save the power consumption, the data-centric node is changed when new sink nodes participate when the WSNs or some queries change their frequencies. The simulation results reveal that the proposed protocol outperforms existing protocols in terms of power conservation and power balancing.
    Relation: Proceedings of the 2009 joint conferences on pervasive computing, pp.131-136
    DOI: 10.1109/JCPC.2009.5420202
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Proceeding

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