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Data broadcast with its scalability feature provides a strong backbone for the digital information delivery. Such a feature is especially significant for mobile users with inherent power limitations in asymmetric communication environments. This paper presents a specific broadcast ordering scheme supported by advanced structure and access mechanism for ad-hoc queries in mobile data broadcast environments...
Range search query processing has become one of the most important technologies in spatial and mobile databases. Most literature focuses on static range search extended from one point on both Euclidean distance and actual network distance, but there are only a few methods which can properly solve the problem for moving users, such as searching objects of interest on a road within a certain range....
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