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    政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 >  Item 140.119/69148


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    題名: An adaptive access method for broadcast data under an error-prone mobile environment
    作者: 陳良弼
    Lo,Shou-Chih
    Chen,Arbee L. P.
    貢獻者: 資科系
    日期: 2000-07
    上傳時間: 2014-08-21 15:08:34 (UTC+8)
    摘要: A ubiquitous information environment can be achieved by the mobile computing technologies. In this environment, users carrying their portable computers can retrieve local or remote information anywhere and at anytime. Data broadcast, with its advantages, has become a powerful means to disseminate data in wireless communications. Indexing methods for the broadcast data have been proposed to speedup access time and reduce power consumption. However, the influence of access failures has not been discussed. For the error-prone mobile environment, the occurrence of access failures is often due to disconnections, handoffs, and communication noises. Based on the distributed indexing scheme, we propose an adaptive access method which tolerates the access failures. The basic idea is to use index replication to recover from the access failures. One mechanism, named search range, is provided to dynamically record the range where the desired data item may exist. According to the search range, an unfinished search can be efficiently resumed by finding an available index replicate. A performance analysis is given to show the benefits of the method. Also, the concept of version bits is applied to deal with the updates of the broadcast data
    關聯: IEEE Transactions on Knowledge and Data Engineering (EI,SCI),12(4),609-620
    資料類型: article
    顯示於類別:[資訊科學系] 期刊論文

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