Juan Pedro Fernandez-Palacios Gimenez, Raul Duque, Tibor Cinkler, Péter Fodor, Péter Soproni, Marcell Perényi, János Tapolcai, András Gulyás, Gyula Sallai, Javier Aracil Rico, Rupert Gruenzinger
Network resilience requirements and algorithms for multicasting and broadcasting digital TV
In this paper we give an overview of the network architecture and of the resilience requirements for both metro and core networks.
We propose and evaluate various protection mechanisms for the metro network and restoration mechanisms for the core network, and evaluate them by extensive simulations, showing that the quality of the tree obtained after the failure is much less important than the restoration time, that strongly depends on the algorithm that determines the new tree. We evaluate how the interrupts of protection switching and restoration affect the experienced quality of service for different video formats and resolutions.