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    ASIA unversity > 資訊學院 > 資訊傳播學系 > 期刊論文 >  Item 310904400/101833


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/101833


    Title: Spatial Air Index based on Largest Empty Rectangles for Non-flat Wireless Broadcast in Pervasive Computing
    Authors: 沈俊宏;SHEN*, JUN-HONG;陸清達;Lu, Ching-Ta;陳牧言;Chen, Mu-Yen;麥健棠;Mai, Chien-Tang
    Contributors: 資訊傳播學系
    Date: 2016-11
    Issue Date: 2016-12-05 14:56:10 (UTC+8)
    Abstract: In pervasive computing, location-based services (LBSs) are valuable for mobile clients based on their current locations. LBSs use spatial window queries to enable useful applications for mobile clients. Based on skewed access patterns of mobile clients, non-flat wireless broadcast has been shown to efficiently disseminate spatial objects to mobile clients. In this paper, we consider a scenario in which spatial objects are broadcast to mobile clients over a wireless channel in a non-flat broadcast manner to process window queries. For such a scenario, we propose an efficient spatial air index method to handle window query access in non-flat wireless broadcast environments. The concept of largest empty rectangles is used to avoid unnecessary examination of the broadcast content, thus reducing the processing time for window queries. Simulation results show that the proposed spatial air index method outperforms the existing methods under various settings.
    Relation: ISPRS International Journal of Geo-Information
    Appears in Collections:[資訊傳播學系] 期刊論文

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