ITU-T Y.1920 PDF

This Recommendation defines functional requirements which are derived from the high-level requirements of traffic mechanisms in [ITU-T Y.1901]. Based on them, a set of traffic management mechanisms at the transport stratum in support of IPTV services are described from the perspectives of control plane, data plane and management plane. Guidelines on how such mechanisms can be used to effectively meet the functional requirements are also provided in detail.

The network supporting IPTV services will span a number of network domains which may be designed, deployed and operated by different providers and which may differ in their traffic management capabilities. Therefore, it is expected that the network provider(s) will implement a set of these mechanisms described in this Recommendation by following the guidelines to ensure that IPTV service objectives are satisfied efficiently. Furthermore, the traffic management mechanisms also depend on the specific network architectures used for IPTV services as defined in [ITU-T Y.1910].