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Multimedia Object Placement for Transparent Data Replication.

Authors :
Keqiu Li
Hong Shen
Francis Y. L. Chin
Weishi Zhang
Source :
IEEE Transactions on Parallel & Distributed Systems; Feb2007, Vol. 18 Issue 2, p212-224, 13p, 4 Black and White Photographs, 5 Charts, 8 Graphs
Publication Year :
2007

Abstract

Transparent data replication is a promising technique for improving the system performance of a large distributed network. Transcoding is an important technology which adapts the same multimedia object to diverse mobile appliances; thus, users' requests for a specified version of a multimedia object could be served by a more detailed version cached according to transcoding. Therefore, it is particularly of theoretical and practical necessity to determine the proper version to be cached at each node such that the specified objective is achieved. In this paper, we address the problem of multimedia object placement for transparent data replication. The performance objective is to minimize the total access cost by considering both transmission cost and transcoding cost. We present optimal solutions for different cases for this problem. The performance of the proposed solutions is evaluated with a set of carefully designed simulation experiments for various performance metrics over a wide range of system parameters. The simulation results show that our solution consistently and significantly outperforms comparison solutions in terms of all the performance metrics considered. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10459219
Volume :
18
Issue :
2
Database :
Complementary Index
Journal :
IEEE Transactions on Parallel & Distributed Systems
Publication Type :
Academic Journal
Accession number :
24080900
Full Text :
https://doi.org/10.1109/TPDS.2007.29