This Recommendation provides a framework for multicast based IPTV content delivery based upon different content delivery functional models and their associated requirements for delivery of IPTV content to multiple end-users simultaneously. The content delivery functional models are defined according to different methods of multicast- based IPTV content delivery in terms of the common functions of the IPTV functional architectural approaches (i.e., Non-NGN, NGN-non-IMS, and NGN-IMS) described in [ITU-T Y.1910]. For each content delivery functional model, different roles for the functions of the IPTV architecture are identified according to the multicast capabilities defined in [ITU-T Y.2236]. For each multicast capability, the corresponding requirements for multicast based IPTV content delivery are further identified based on the requirements to support IPTV services [ITU-T Y.1901].
ITU-T Y.1902-2011 history
2011ITU-T Y.1902-2011 (Pre-Published) Framework for multicast based IPTV content delivery