Open Access

Cooperative Coding and Caching for Streaming Data in Multihop Wireless Networks

EURASIP Journal on Wireless Communications and Networking20102010:312714

https://doi.org/10.1155/2010/312714

Received: 25 February 2010

Accepted: 15 May 2010

Published: 14 June 2010

Abstract

This paper studies the distributed caching managements for the current flourish of the streaming applications in multihop wireless networks. Many caching managements to date use randomized network coding approach, which provides an elegant solution for ubiquitous data accesses in such systems. However, the encoding, essentially a combination operation, makes the coded data difficult to be changed. In particular, to accommodate new data, the system may have to first decode all the combined data segments, remove some unimportant ones, and then reencode the data segments again. This procedure is clearly expensive for continuously evolving data storage. As such, we introduce a novel Cooperative Coding and Caching ( ) scheme, which allows decoding-free data removal through a triangle-like codeword organization. Its decoding performance is very close to the conventional network coding with only a sublinear overhead. Our scheme offers a promising solution to the caching management for streaming data.

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Authors’ Affiliations

(1)
Department of Computing, The Hong Kong Polytechnic University
(2)
School of Computing Science, Simon Fraser University Burnaby
(3)
Department of Computer Science, Hong Kong University of Science and Technology
(4)
Key Laboratory of Science and Technology for National Defence of Parallel and Distributed Processing, School of Computer, National University of Defense Technology

Copyright

© DanWang et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.