A Linear Consensus Approach to Quality-Fair Video Delivery

Laura Dal Col (1) , Sophie Tarbouriech (1) , Luca Zaccarian (1) , Michel Kieffer (2, 3, 4)

1 LAAS-MAC - Équipe Méthodes et Algorithmes en Commande
2 L2S - Laboratoire des signaux et systèmes
3 LTCI - Laboratoire Traitement et Communication de l'Information
4 IUF - Institut universitaire de France

We consider the problem of delivering encoded video to several mobile terminals sharing some limited wireless resource. The aim is to provide some fairness among the terminals in terms of utility, which is cast in the framework of discrete-time linear distributed consensus. To this end, the rate-utility characteristics of each stream is linearized, which allows to get necessary and sufficient conditions on the controller parameters to asymptotically reach the consensus. We also provide a general result on consensus of identical linear systems. Simulation results illustrate the efficiency of the proposed approach and show its robustness to variations of the characteristics of the video streams.

Domaines: Système multi-agents [cs.MA]

Laura Dal Col, Sophie Tarbouriech, Luca Zaccarian, Michel Kieffer. A Linear Consensus Approach to Quality-Fair Video Delivery. 53rd IEEE Annual Conference on Decision and Control (CDC 2014), Dec 2014, Los Angeles, CA, USA, United States. pp. 5296-5301, ⟨10.1109/cdc.2014.7040217⟩. ⟨hal-01068057⟩