Generalized data retrieval for pyramid-based periodic broadcasting of videos

  • Authors:

  • Jin B. Kwon;Heon Y. Yeom

  • Affiliations:

  • Department of Computer and Information Sciences, Sunmoon University, 100 Kalsan, Tangjeong, Asan, Chungnam 336-708, South Korea;Department of Computer Science and Engineering, Seoul National University, San56-1, Sillim-dong, Kwanak-gu, Seoul 151-742, South Korea

  • Venue:
  • Future Generation Computer Systems - Special issue: Semantic grid and knowledge grid: the next-generation web
  • Year:
  • 2004

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Abstract

A true video-on-demand system allows users to view any video program, at any time, and perform any VCR functions, but its per-user video delivery cost is too expensive to have commercial use. Periodic broadcasting (PB), which is a near video-on-demand technique, broadcasts videos repeatedly over broadcast channels. In this way, PB can service an unlimited number of clients simultaneously with a bounded service latency. We propose a data retrieval scheme, consisting of buffer management and data placement, for PB servers. Unlike existing schemes devised for a specific PB technique, our scheme can be adopted by general PB. Furthermore, it is devised considering variations in disk load induced by VBR-encoded videos.