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


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    题名: Spatial Air Index based on Largest Empty Rectangles for Non-flat Wireless Broadcast in Pervasive Computing
    作者: 沈俊宏;SHEN*, JUN-HONG;陸清達;Lu, Ching-Ta;陳牧言;Chen, Mu-Yen;麥健棠;Mai, Chien-Tang
    贡献者: 資訊傳播學系
    日期: 2016-11
    上传时间: 2016-12-05 14:56:10 (UTC+8)
    摘要: 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.
    關聯: ISPRS International Journal of Geo-Information
    显示于类别:[資訊傳播學系] 期刊論文

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