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Proceedings Paper

Corelli: a peer-to-peer dynamic replication service for supporting latency-dependent content in community networks
Author(s): Gareth Tyson; Andreas U. Mauthe; Sebastian Kaune; Mu Mu; Thomas Plagemann
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Paper Abstract

The quality of service for latency dependent content, such as video streaming, largely depends on the distance and available bandwidth between the consumer and the content. Poor provision of these qualities results in reduced user experience and increased overhead. To alleviate this, many systems operate caching and replication, utilising dedicated resources to move the content closer to the consumer. Latency-dependent content creates particular issues for community networks, which often display the property of strong internal connectivity yet poor external connectivity. However, unlike traditional networks, communities often cannot deploy dedicated infrastructure for both monetary and practical reasons. To address these issues, this paper proposes Corelli, a peer-to-peer replication infrastructure designed for use in community networks. In Corelli, high capacity peers in communities autonomously build a distributed cache to dynamically pre-fetch content early on in its popularity lifecycle. By exploiting the natural proximity of peers in the community, users can gain extremely low latency access to content whilst reducing egress utilisation. Through simulation, it is shown that Corelli considerably increases accessibility and improves performance for latency dependent content. Further, Corelli is shown to offer adaptive and resilient mechanisms that ensure that it can respond to variations in churn, demand and popularity.

Paper Details

Date Published: 19 January 2009
PDF: 12 pages
Proc. SPIE 7253, Multimedia Computing and Networking 2009, 725308 (19 January 2009); doi: 10.1117/12.815558
Show Author Affiliations
Gareth Tyson, Lancaster Univ. (United Kingdom)
Andreas U. Mauthe, Lancaster Univ. (United Kingdom)
Sebastian Kaune, Darmstadt Univ. of Technology (Germany)
Mu Mu, Lancaster Univ. (United Kingdom)
Thomas Plagemann, Univ. of Oslo (Norway)

Published in SPIE Proceedings Vol. 7253:
Multimedia Computing and Networking 2009
Reza Rejaie; Ketan D. Mayer-Patel, Editor(s)

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