Cooperative Coding and Caching for Streaming Data in Multihop Wireless Networks. (14th June 2010)

• Record Type: Journal Article
• Authors: Wang Wang, Dan Dan; Liu Liu, Jiangchuan Jiangchuan; Zhang Zhang, Qian Qian; Chen Chen, Fajun Fajun
• Other Names: Zhou Zhou Liang Liang Academic Editor.
• Is Part Of: EURASIP journal on wireless communications and networking. Volume 2010(2010)
• Publication Date: 2010-06-14
• Subjects: Wireless communication systems -- Periodicals; Signal processing -- Periodicals; 621.38405
• DOI: 10.1155/2010/312714
• Languages: English
• ISSNs: 1687-1499

Abstract

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 (C 3 ) 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.