A priority dropping mechanism for the multicast delivery of layered video in a DiffServ environment

Stathopoulos, P; Zoi, S; Loukatos, D; Roustas, A; Mitrou, N

dc.contributor.author	Stathopoulos, P	en
dc.contributor.author	Zoi, S	en
dc.contributor.author	Loukatos, D	en
dc.contributor.author	Roustas, A	en
dc.contributor.author	Mitrou, N	en
dc.date.accessioned	2014-03-01T01:52:56Z
dc.date.available	2014-03-01T01:52:56Z
dc.date.issued	2003	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26789
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-4944240071&partnerID=40&md5=af4eb42443b8b5a92ec74bcdaced0b2d	en
dc.subject	DiffServ	en
dc.subject	Experiments	en
dc.subject	MPEG4IP	en
dc.subject	Multicast	en
dc.subject	Priority dropping	en
dc.subject	Video	en
dc.subject.other	Bandwidth	en
dc.subject.other	Congestion control (communication)	en
dc.subject.other	Multicasting	en
dc.subject.other	Multimedia systems	en
dc.subject.other	Network protocols	en
dc.subject.other	Packet networks	en
dc.subject.other	Quality of service	en
dc.subject.other	Signal encoding	en
dc.subject.other	Telecommunication services	en
dc.subject.other	DiffServ	en
dc.subject.other	MPEG4IP	en
dc.subject.other	Priority dropping	en
dc.subject.other	Video	en
dc.subject.other	Virtual reality	en
dc.title	A priority dropping mechanism for the multicast delivery of layered video in a DiffServ environment	en
heal.type	journalArticle	en
heal.publicationDate	2003	en
heal.abstract	In this paper a network-based, open loop mechanism for the multicast delivery of layered video streams is specified and experimentally evaluated for a DiffServ environment. Network oriented mechanisms for delivering layered multicast video offer simplicity and efficiency. Before the emergence of the Differentiated Services (DiffServ) framework a solid and feasible set of network mechanisms supporting such functionalities did not exist. The central idea is that once the application flow provides indications of how to scale in cases of losses, it is task of the network to manage packet drops according to their importance. The application defines priority layers within the video stream through packet marking, while the DiffServ is exploited to provide layer aware packet dropping together with a complete QoS provisioning framework. In this sense, each video stream is delivered in a single multicast group, without the need for extensive group management functions. During congestion at multicast tree nodes, packets corresponding to a lower priority layer are dropped first, thus protecting the most precious entities of the stream. In this context, congestion is handled at the node it occurs as soon as it occurs. Experiments with a DiffServ aware MPEG-4 streaming platform, were conducted over a laboratory platform validating the mechanism's applicability. Experimental results are exposed.	en
heal.publisher	World Scientific and Engineering Academy and Society	en
heal.journalName	Recent Advances in Communications and Computer Science	en
dc.identifier.spage	126	en
dc.identifier.epage	131	en