A content-centric framework for effective data dissemination in opportunistic networks

Ling Jyh Chen*, Chen Hung Yu, Cheng Long Tseng, Hao Hua Chu, Cheng Fu Chou

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

30 引文 斯高帕斯(Scopus)

摘要

In this paper, we address the challenges of content transfer in opportunistic networks, and propose techniques to better facilitate data dissemination based on the characteristics of the content. To investigate this problem from its origins, we propose three message scheduling algorithms: Sequential Forwarding (SF), Full Interleaving (FI), and Block-based Interleaving (BI). Each algorithm is embedded in a specially tailored data dissemination technique to evaluate the benefits of applying it to different types of content and data dissemination methods. Three types of content (file, video and web) are considered and evaluated, and the dissemination methods considered are Layered Multiple Description Coding (LMDC) based and file-based. Using simulations as well as both synthetic and realistic network scenarios, we evaluate the proposed schemes in terms of latency and user perceived quality, and demonstrate how the schemes can achieve much better latency performance for file transfers. Furthermore, we show that using LMDC-based techniques leads to higher user perceived quality, since the end user is allowed to "preview" video file or web content, even before the data has been completely transferred. The effectiveness and robustness of our message scheduling algorithms and their corresponding content dissemination techniques make them ideal solutions that can go a long way toward effective data dissemination in opportunistic networks.

原文英語
文章編號4530733
頁(從 - 到)761-772
頁數12
期刊IEEE Journal on Selected Areas in Communications
26
發行號5
DOIs
出版狀態已發佈 - 2008 六月

ASJC Scopus subject areas

  • 電腦網路與通信
  • 電氣與電子工程

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