A consensus approach to PI gains tuning for quality-fair video delivery

Laura Dal Col 1 Sophie Tarbouriech 1 Luca Zaccarian 1 Michel Kieffer 2
1 LAAS-MAC - Équipe Méthodes et Algorithmes en Commande
LAAS - Laboratoire d'analyse et d'architecture des systèmes [Toulouse]
2 L2S - Laboratoire des signaux et systèmes
Abstract : In this paper we provide necessary and sufficient conditions for the quality-fair delivery of multimedia contents to mobile users. We control the encoding rates and the transmission rates of the video streams, delivered through a limited capacity channel. This problem is cast into a problem of consensus among identical discrete-time linear systems, connected through a network with fixed and fully connected topology. The information exchanged over the communication network is the measure of the quality of the encoded videos. Based on a consensus result for identical linear systems, we reduce the problem of designing the Proportional and Integral (PI) gains of the encoding rate and transmission rate controllers to a linear static output feedback. We propose an iterative design technique based on linear matrix inequalities to solve the corresponding nonconvex problem, thereby providing a constructive optimality-based approach to the PI gains tuning problem. We demonstrate the effectiveness of our method in simulations, where we compare it to pre-existing approaches.
Keywords : video delivery fairness Consensus controller design
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Journal articles
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https://hal-centralesupelec.archives-ouvertes.fr/hal-01576615
Contributor : Michel Kieffer <>
Submitted on : Wednesday, August 23, 2017 - 3:27:50 PM
Last modification on : Tuesday, June 18, 2019 - 3:26:05 PM

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CENTRALESUPELEC | INSA-TOULOUSE | L2S | LAAS | LAAS-DECISION-ET-OPTIMISATION | LAAS-MAC | SUP_LSS | UNIV-PARIS-SACLAY | PARISTECH | SUP_TELECOMS | INSA-GROUPE | UNIV-TLSE3

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Laura Dal Col, Sophie Tarbouriech, Luca Zaccarian, Michel Kieffer. A consensus approach to PI gains tuning for quality-fair video delivery. International Journal of Robust and Nonlinear Control, Wiley, 2017, 27 (9), pp.1547-1565. ⟨10.1002/rnc.3739⟩. ⟨hal-01576615⟩

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