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Analysis of Prefetching Schemes for TV-on-Demand Service

Du, Manxing; Kihl, Maria LU ; Arvidsson, Åke; Lagerstedt, Christina and Gavler, Anders (2015) 10th International Conference on Digital Telecommunications In 10th International Conference on Digital Telecommunications
Abstract
TV-on-Demand service has become one of the most popular Internet applications that continuously attracts higher user interests. With rapidly increasing user demand, the existing network conditions may not be able to ensure low start-up delay of video playback. Prefetching has been broadly investigated to cope with the start-up latency problem which is also known as user perceived latency. In this paper, we analyse request patterns for TV programs from a popular Swedish TV service provider over 11 weeks. According to the analysis, we propose a prefetching scheme at the user end to preload videos before user requests. Our prefetching scheme significantly improves the cache hit ratio compared to terminal caching and we note that there is a... (More)
TV-on-Demand service has become one of the most popular Internet applications that continuously attracts higher user interests. With rapidly increasing user demand, the existing network conditions may not be able to ensure low start-up delay of video playback. Prefetching has been broadly investigated to cope with the start-up latency problem which is also known as user perceived latency. In this paper, we analyse request patterns for TV programs from a popular Swedish TV service provider over 11 weeks. According to the analysis, we propose a prefetching scheme at the user end to preload videos before user requests. Our prefetching scheme significantly improves the cache hit ratio compared to terminal caching and we note that there is a potential to further improve prefetching performance by customizing prefetching schemes for different video categories. We further present a cost model to determine the optimal number of videos to prefetch. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
10th International Conference on Digital Telecommunications
pages
6 pages
publisher
IARIA
conference name
10th International Conference on Digital Telecommunications
project
EIT_NOTTS Next generation over-the-top multimedia services
LCCC
language
English
LU publication?
yes
id
b653259f-c360-479f-aff6-99af8aa3b7e5 (old id 8230667)
date added to LUP
2015-11-30 11:21:46
date last changed
2016-04-16 07:23:21
@inproceedings{b653259f-c360-479f-aff6-99af8aa3b7e5,
  abstract     = {TV-on-Demand service has become one of the most popular Internet applications that continuously attracts higher user interests. With rapidly increasing user demand, the existing network conditions may not be able to ensure low start-up delay of video playback. Prefetching has been broadly investigated to cope with the start-up latency problem which is also known as user perceived latency. In this paper, we analyse request patterns for TV programs from a popular Swedish TV service provider over 11 weeks. According to the analysis, we propose a prefetching scheme at the user end to preload videos before user requests. Our prefetching scheme significantly improves the cache hit ratio compared to terminal caching and we note that there is a potential to further improve prefetching performance by customizing prefetching schemes for different video categories. We further present a cost model to determine the optimal number of videos to prefetch.},
  author       = {Du, Manxing and Kihl, Maria and Arvidsson, Åke and Lagerstedt, Christina and Gavler, Anders},
  booktitle    = {10th International Conference on Digital Telecommunications},
  language     = {eng},
  pages        = {6},
  publisher    = {IARIA},
  title        = {Analysis of Prefetching Schemes for TV-on-Demand Service},
  year         = {2015},
}