Ip multicast management and service provision system and method

H - Electricity – 04 – N

Patent

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Details

H04N 21/258 (2011.01) H04L 12/18 (2006.01)

Patent

CA 2617451

A system (10), method (90) and apparatus (14) are provided for provisioning a multicast stream, such as an IP multicast stream, in a network. The system includes a first tier (12), such as a national backbone, with a first Multicast Address Discovery (MCAD) directory (34), and at least one second tier having a headend, such as a regional headend (14), with a second MCAD directory (36, 38). The system (10) includes a tiered MCAD directory network that allows the assignment of multicast addresses to multicast streams received from an upper tier MCAD directory. The tiered MCAD directory structure allows for requesting and storing stream descriptors and delivering stream descriptors on-demand to MCAD-enabled devices throughout the system. The system (10) also allows for stream provisioning maintenance and validation at lower tier headends via MCAD-enabled device queries or re-queries of upper tier MCAD directories.

La présente invention concerne un système (10), un procédé (90) et un appareil (14) permettant de fournir un flux multi-diffusion, tel qu'un flux multi-diffusion IP, dans un réseau. Ce système comprend un premier palier (12) telles qu'un réseau Thinnet national, avec un répertoire de découverte d'adresses multi-diffusion (MCAD) (34) et, au moins un deuxième palier possédant une tête de ligne, telle qu'une tête de ligne régionale (14) avec un deuxième répertoire MCAD (36, 38). Ce système (10) comprend un réseau de répertoire MCAD à paliers qui permet l'attribution d'adresses multi-diffusion à des flux multi-diffusions reçus d'un répertoire MCAD de palier supérieur. Cette structure de répertoire MCAD à paliers permet de demander et de stocker des descripteurs de flux et de livrer des descripteurs de flux à la demande à des dispositifs compatibles MCAD à travers le système. Ce système (10) permet aussi de fournir une maintenance et une validation de fourniture de flux aux têtes de ligne de palier inférieur via des demandes ou des nouvelles demandes de dispositifs compatibles MCAD de répertoires MCAD de palier supérieur.

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