A Novel Replication Strategy for Efficient XML Data Broadcast in Wireless Mobile Networks

摘要

Recently, the use of XML for data broadcasting in mobile wireless networks has gained many attentions. In these networks, a stream of XML data is broadcasted via a wireless channel, and mobile clients access the broadcast stream using energy-restricted portable devices. Several indexing methods have been proposed to selectively access XML data over a broadcast stream. Although existing indexing methods improve the performance of XML query processing in terms of access time and tuning time but they do not use a replication strategy to replicate the indexes in the broadcast XML stream. In this paper, we propose a novel replication strategy for XML data broadcast called Triangle-based Replication (TR) strategy which replicates the partial and relevant parts of indexes into suitable positions in the broadcast XML stream. Experimental results show that our proposed XML replication strategy has better performance compared to existing XML replication strategies.