Performability analysis of an adaptive-rate video-streaming service in end-to-end qos scenarios

Authors:
I. V. Martín;J. J. Alins;Mónica Aguilar-Igartua;Jorge Mata-Díaz
Affiliations:
Telematics Engineering Department, Technical University of Catalonia (UPC), Barcelona, Spain;Telematics Engineering Department, Technical University of Catalonia (UPC), Barcelona, Spain;Telematics Engineering Department, Technical University of Catalonia (UPC), Barcelona, Spain;Telematics Engineering Department, Technical University of Catalonia (UPC), Barcelona, Spain
Venue:
DSOM'05 Proceedings of the 16th IFIP/IEEE Ambient Networks international conference on Distributed Systems: operations and Management
Year:
2005

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Abstract

Nowadays, dynamic service management frameworks are proposed to ensure end-to-end QoS. To achieve this goal, it is necessary to manage Service Level Agreements (SLAs), which specify quality parameters of the services operation such as availability and performance. This work is focused on the evaluation of Video-on-Demand (VoD) services in end-to-end QoS scenarios. Based on a straightforward Markov Chain, Markov-Reward Chain (MRC) models are developed in order to obtain various QoS measures of an adaptive VoD service. The MRC model has a clear understanding with the design and operation of the VoD system. In this way, new design options can be proposed and be easily evaluated. To compute performability measures of the MRC model, the randomization method is employed. Predicted model results fit well to the ones taken from a real video-streaming testbed.