Método, aparelho adequado, nó receptor de serviço adequado, e nó de provisão de serviço adequado para otimizar o uso da largura de banda em um sistema de controle de serviços de multidifusão, aparelho do nó de provisão de serviço, e, artigo de manufatura

摘要

The present invention relates to methods and arrangements to optimize bandwidth usage in a Multicast Services Control System (MSCS) for digital information transport. The system comprises a service provider (Server) and service receivers (STB1-STB5) able to receive multicast streams from the service provider along multicast trees in an IP network (A/MNW). The method comprises the following steps:—A multicast join is performed by the service receivers to a multicast group associated with the service of interest provided by the service provider.—Bandwidth is measured on paths in a joined multicast tree.—Each of the service receivers (STB1-STB5) join an optimal multicast group (D1, D2, D3), which joining is based on the measurements.