English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 55542/89856 (62%)
造訪人次 : 11003720      線上人數 : 59
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50515

    題名: On Connected Target Coverage for Wireless Heterogeneous Sensor Networks with Multiple Sensing Units
    作者: 石貴平;Shih, Kuei-ping;Deng, Der-jiunn;Chang, Ruay-shiung;Chen, Hung-chang
    貢獻者: 淡江大學資訊工程系
    關鍵詞: connectivity;heterogeneous sensors;multiple sensing units;target coverage;wireless sensor networks
    日期: 2009-01-01
    上傳時間: 2010-08-09 18:52:20 (UTC+8)
    出版者: Molecular Diversity Preservation International (MDPI)
    摘要: The paper considers the connected target coverage (CTC) problem in wireless heterogeneous sensor networks (WHSNs) with multiple sensing units, termed MU-CTC problem. MU-CTC problem can be reduced to a connected set cover problem and further formulated as an integer linear programming (ILP) problem. However, the ILP problem is an NP-complete problem. Therefore, two distributed heuristic schemes, REFS (remaining energy first scheme) and EEFS (energy efficiency first scheme), are proposed. In REFS, each sensor considers its remaining energy and its neighbors’ decisions to enable its sensing units and communication unit such that all targets can be covered for the required attributes and the sensed data can be delivered to the sink. The advantages of REFS are its simplicity and reduced communication overhead. However, to utilize sensors’ energy efficiently, EEFS is proposed. A sensor in EEFS considers its contribution to the coverage and the connectivity to make a better decision. To our best knowledge, this paper is the first to consider target coverage and connectivity jointly for WHSNs with multiple sensing units. Simulation results show that REFS and EEFS can both prolong the network lifetime effectively. EEFS outperforms REFS in network lifetime, but REFS is simpler.
    關聯: Sensors 9(7), pp.5173-5200
    DOI: 10.3390/s90705173
    顯示於類別:[資訊工程學系暨研究所] 期刊論文


    檔案 大小格式瀏覽次數
    1424-8220_9(7)p5173-5200.pdf404KbAdobe PDF371檢視/開啟



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋