Energy-conserving fragment methods for skewed XML data access in push-based broadcast
WAIM'11 Proceedings of the 12th international conference on Web-age information management
An automaton-based index scheme for on-demand XML data broadcast
DASFAA'12 Proceedings of the 17th international conference on Database Systems for Advanced Applications - Volume Part II
Effective scheduling algorithm for on-demand XML data broadcasts in wireless environments
ADC '11 Proceedings of the Twenty-Second Australasian Database Conference - Volume 115
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XML data broadcast is an efficient way to disseminate semi-structured information in wireless mobile environments. Air indexing is the common method to improve the access time, and reduce the energy consumption in a broadcast system. In this paper, we propose a novel two-tier air indexing method that provides an overall picture of the document set in the server which is necessary for XML data retrieving in on-demand mode. The efficiency of our indexing method is contributed by two distinct advantages. First, the proposed pruning technique and the two-tier structure significantly reduce the index size. Second, the two-tier structure enables efficient access protocol at the client which can further reduce the tuning time during the index look up. Simulation experiments show the benefits of our indexing methods.