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Modelo de Comportamento dos Participantes do SopCast
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0002-6468-1605
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2009 (Portuguese)In: WebMedia 2009: 15th Brazilian Symposium on Multimedia and the Web, 2009Conference paper (Refereed)
Abstract [pt]

Apesar da crescente popularidade das aplica¸c˜oes de transmiss ˜ao de m´ıdia cont´ınua ao vivo em P2P, a compreens˜ao atual de aspectos importantes do comportamento dos participantes, como o intervalo de chegada entre eles e tempo de permanˆencia na rede, ainda ´e limitada. Este trabalho pretende preencher esta lacuna apresentando uma caracteriza ¸c˜ao do comportamento dos participantes no SopCast, uma das aplica¸c˜oes mais populares de transmiss˜ao ao vivo sobre P2P. A an´alise apresentada inclui propriedades relativas `a sess˜ao, tais como intervalos entre chegada de novos participantes, tempo de permanˆencia, n´umero de sess˜oes q e tempo de inatividade entre sess˜oes. Tamb´em s˜ao apresentadas propriedades das parcerias entre os participantes, como n´umero de parceiros e suas dura¸c˜oes. Al´em disso, o estudo apresentado compreende diferentes canais do Sop- Cast, destacando diferen¸cas nos padr˜oes de comportamento dependendo do conte´udo. As caracteriza¸c˜oes apresentadas definem um modelo dos participantes, que pode ser usado como base para cria¸c˜ao de novos protocolos e gera¸c˜ao de cargas sint´eticas realistas para transmiss˜ao ao vivo em P2P.

Abstract [en]

Despite the growing popularity of live P2P continuous media transmission applications, still limited the current understanding of important aspects of the behavior of the participants, like the arrival time between them and time spent on the network. This work aims to fill this gap by presenting a characterization of the behavior of participants inSopCast, one of the most popular live transmission applications on P2P. The analysis includes properties for the session, such as gaps between the arrival of new participants, staying time, number of sessions and inactivity time between sessions. We also present properties of partnerships among participants, such as number of partners. In addition, the study deals with different SopCast channels, highlighting differences in patterns of behavior depending on content. The characterizations present a model set of participants, which can be used as a basis for creating new protocols and generation of realistic synthetic loads for live broadcast on P2P.

Place, publisher, year, edition, pages
Keyword [en]
live streaming, measurement, P2P, performance
National Category
Computer and Information Science
URN: urn:nbn:se:kth:diva-63159DOI: 10.1145/1858477.1858501ISBN: 978-160558880-3OAI: diva2:481719
15th Brazilian Symposium on Multimedia and the Web, WebMedia 2009, Fortaleza, Ceara, 5 October 2009 through 7 October 2009
QC 20120207Available from: 2012-01-22 Created: 2012-01-22 Last updated: 2012-02-07Bibliographically approved

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de Carvalho Gomes, Pedro
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