Gwendal SIMON

Gwendal SIMON


Maître de Conférences, HDR
Département Systèmes Réseaux, Cybersécurité et Droit du numérique

Téléphone : (+33) 2 99 12 70 48
Télécopie : 02 99 12 70 30
Courriel : gwendal.simon@imt-atlantique.fr
ENST Bretagne
Titre

Joint Optimization for the Delivery of Multiple Video Channels in Telco-CDNs

Auteur(s)

ZHOU Fen4, LIU Jiayi5, SIMON Gwendal1,2, BOUTABA Raouf3

Type de document

Article de revue avec comité de lecture

Source

IEEE transactions on network and service management, march 2015, vol. 12, n° 1, pp. 87-100

Année

2015

Résumé

The delivery of live video channels for services such as twitch.tv leverages the so-called Telco-CDN-Content Delivery Network (CDN) deployed within the Internet Service Provider (ISP) domain. A Telco-CDN can be regarded as an intra-domain overlay network with tight resources and critical deployment constraints. This paper addresses two problems in this context: (1) the construction of the overlays used to deliver the video channels from the entrypoints of the Telco-CDN to the appropriate edge servers; and (2) the allocation of the required resources to these overlays. Since bandwidth is critical for entrypoints and edge servers, our ultimate goal is to deliver as many video channels as possible while minimizing the total bandwidth consumption. To achieve this goal, we propose two approaches: a two-step optimization where the optimal overlays are firstly computed, then an optimal resource allocation based on these pre-computed overlays is performed; and a joint optimization where both optimization problems are simultaneously solved. We also devise fast heuristic algorithms for each of these approaches. The conducted evaluations of these two approaches and algorithms provide useful in- sights into the management of critical Telco-CDN infrastructures.

Labos

1 : RSM - Dépt. Réseaux, Sécurité et Multimédia (Institut Mines-Télécom-Télécom Bretagne-UEB)
2 : IRISA - Institut de recherche en informatique et systèmes aléatoires (UMR CNRS 6074 - Université de Rennes 1 - INRIA - INSA de Rennes - ENS de Cachan - Télécom Bretagne - Université de Bretagne Sud)
3 : CS - Cheriton School of Computer Science (University of Waterloo)
4 : LIA - Laboratoire Informatique d'Avignon (Université d'Avignon et des Pays de Vaucluse - Centre d'Enseignement et de Recherche en Informatique (CERI))
5 : Xidian University (.)

Mots clés

Content delivery, Content delivery architecture

Référence

15241

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