Evaluation of alternative VCR methods for interactive VOD systems

Markaki, ME; Tsiodras, AP; Mamais, GK; Saltouros, MP; Venieris, IS

dc.contributor.author	Markaki, ME	en
dc.contributor.author	Tsiodras, AP	en
dc.contributor.author	Mamais, GK	en
dc.contributor.author	Saltouros, MP	en
dc.contributor.author	Venieris, IS	en
dc.date.accessioned	2014-03-01T01:51:52Z
dc.date.available	2014-03-01T01:51:52Z
dc.date.issued	2002	en
dc.identifier.issn	12062138	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26489
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0036403123&partnerID=40&md5=877af2c5d8cfe2fbb14a6640c1bec93f	en
dc.subject	ATM	en
dc.subject	MPEG	en
dc.subject	Statistical multiplexing	en
dc.subject	VCR functionality	en
dc.subject	VoD	en
dc.subject.other	Asynchronous transfer mode	en
dc.subject.other	Bandwidth	en
dc.subject.other	Markov processes	en
dc.subject.other	Mathematical models	en
dc.subject.other	Multimedia systems	en
dc.subject.other	Multiplexing	en
dc.subject.other	Servers	en
dc.subject.other	Statistical methods	en
dc.subject.other	Multimedia retrieval systems	en
dc.subject.other	Video on demand	en
dc.title	Evaluation of alternative VCR methods for interactive VOD systems	en
heal.type	journalArticle	en
heal.publicationDate	2002	en
heal.abstract	In a Video-on-Demand (VoD) system, geographically distributed users can interactively access video files from a remote VoD server. In this article we present and compare the five most widely used methods to interact with the video programs with such operations as fast forward, fast rewind, and so on. To capture the interactive behaviour of a typical user, a Markov Modulated Poisson Process (MMPP) model is developed. Using this model as a workload generator, we evaluate the performance of alternative VCR methods in terms of picture quality, server capacity, and buffer and bandwidth requirements for a single user of an ATM network. Furthermore, we study the effectiveness of statistical multiplexing when multiple users are connected to the VoD server, and investigate both the impact of each VCR method on the multiplexing gain in terms of throughput utilization (i.e., maximum number of users), and the way the number of maximum multiplexed MPEG-2 streams varies for different scheduling schemes applied by the VoD server. The article gives guidelines for the implementation of VCR commands in modern interactive multimedia retrieval systems.	en
heal.journalName	International Journal of Parallel and Distributed Systems and Networks	en
dc.identifier.volume	5	en
dc.identifier.issue	2	en
dc.identifier.spage	66	en
dc.identifier.epage	75	en