Publication Details

This article was originally published as: Davis, SJ & Burnett, IS, Efficient Delivery within the MPEG-21 Framework, First International Conference on Automated Production of Cross Media Content for Multi-Channel Distribution (AXMEDIS 2005), 30 October-02 November 2005, 205-208. Copyright IEEE 2005.


MPEG-21, the new Multimedia Framework standard is nearing completion. It is centred around the concept of a Digital Item which is exchanged in the form of an XML declaration. This paper initially considers the challenge of compressing these Digital Item Declarations and presents conclusive results showing that schema based compression is the best solution. A new technique is then presented whereby the one-way delivery framework is expanded to allow client selection and control of Digital Item fragment transmission. This uses a new Remote XML Exchange Protocol (RXEP) which significantly reduces storage and time delays in mobile environments. Finally, the new approach is combined with schema-based compression to offer maximum efficiency.



Link to publisher version (DOI)