Efficient management of XML contents over wireless environment by Xstream

Authors:
Eugene Y. C. Wong;Alvin T. S. Chan;Hong-Va Leong
Affiliations:
Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Venue:
Proceedings of the 2004 ACM symposium on Applied computing
Year:
2004

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Abstract

In this paper we investigated the issues pertaining to streaming generalized XML documents over the wireless environment. We highlight the disadvantages of employing existing approach to fragment and manage the transfer of XML contents across a wireless environment. In particular, existing approach of fragmenting data takes no consideration of the structure and semantics of the XML data. Also, using the connection-oriented transport protocol, such as TCP, will result in lower throughput due to the head-of-line blocking and inefficient error control mechanisms operating in an error-prone environment. We proposed Xstream to focus on the flexible management of XML data operating over the wireless environment. Xstream leverages the structural characteristics of XML documents to fragment XML contents into autonomous units called Xstream Data Unit (XDU). Also, it incrementally sends fragments over a wireless link and performs look-ahead processing of the document. This facilitates the efficient use of scarce bandwidth. In this paper we describe the Xstream framework and the techniques involved. A complete deployment and setup of Xstream is discussed and the empirical performances are evaluated to verify the benefits of streaming XML documents using Xstream.