Replication Strategies for Streaming Media

Document type: Researchreports
Full text:
Author(s): David Erman
Title: Replication Strategies for Streaming Media
Translated title: Replikeringsstrategier för strömmande media
Series: Research Report
Year: 2007
Issue: 3
ISSN: 1103-1581
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Telecommunication Systems (Sektionen för teknik – avd. för telekommunikationssystem)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
Authors e-mail:
Language: English
Abstract: Large-scale, real-time multimedia distribution over the Internet has been the subject of research for a substantial amount of time. A large number of mechanisms, policies, methods and schemes have been proposed for media coding, scheduling and distribution. Internet Protocol (IP) multicast was expected to be the primary transport mechanism for this, though it was never deployed to the expected extent. Recent developments in overlay networks has reactualized the research on multicast, with the consequence that many of the previous mechanisms and schemes are being re-evaluated.

This report provides a brief overview of several important techniques for media broadcasting and stream merging, as well as a discussion of traditional IP multicast and overlay multicast. Additionally, we present a proposal for a new distribution system, based on the broadcast and stream merging algorithms in the BitTorrent distribution and replication system.
Summary in Swedish: Rapporten ger en översikt över ett flertal mekanismer för multicast-distribution av strömmande media i IP-nät. Mekanismer för strömsammanslagning, schemaläggning och buffring presenteras. En diskussion kring s.k. overlay-nät och deras applikation till mediadistribution ges även. Vidare presenteras utökningar av BitTorrent-protokollet för mjuka QoS-garantier samt modifikationer av huvudalgoritmerna för att tillhandahålla strömmande tjänster.
Subject: Computer Science\Networks and Communications
Keywords: Streaming, media distribution, stream merging, broadcasting, bittorrent, overlay, multicast, p2p
URN: urn:nbn:se:bth-00364