scope:

The present document analyses existing NGN-based IPTV functional architectures (IMS based IPTV, NGN integrated IPTV) and its features.

The scope of the present document includes:

• comparison of architectural aspects between TISPAN NGN based IPTV and 3GPP MBMS/PSS (IMS based or non-IMS based MBMS/PSS) with aim to consider possible mappings of functionalities or feasibility of scenarios for interworking;

• consider IPTV work within other SDOs/Fora with relation to TISPAN NGN based IPTV architecture (e.g. relation with ITU-T IMS/non-IMS based IPTV);

• consider the impacts for providing selected TISPAN IPTV services to mobile UE over existing mobile access networks;

• consider the impacts to support IPTV interconnection models from TISPAN stage 2 specification.