IPTV represents a solution for interactive television-like services. As the NGN has gained attention for the IP multimedia service delivery platform, IPTV has been recognized as the way to provide the key value-added services. However, IPTV differs from typical NGN-based voice and data services by the fact that it combines three conceptually unfamiliar (until now) components: streamed video, Web services, and NGN-based service control. Another difference is in the sense of the quality-assured service delivery that in the case of IPTV is much stricter for two reasons: it is more challenging to meet an end user's satisfaction in the case of television services, and there are issues of quality- assured provisioning of real-time multimedia services in an environment that is best-effort in its nature. In this article, possible approaches to NGN- based IPTV services assurance are presented from the QoE and QoS viewpoints. Current environments and an overview of the standardization efforts are given. A proposal for a fully NGN-integrated quality-assured IPTV provisioning model is presented with an associated converged profile structure. The service-aware quality assurance approach is argued. The article investigates further NGN service delivery enhancements for quality-assured provisioning of IPTV services that until now remained unresolved. The objective of this article is to present the design of a realistic quality assurance model, establish the associated framework for NGN-based IPTV services delivery, and contribute to discussions and research activities. At the same time, the conclusions and the proposed models will serve as a framework for future efforts in our laboratory NGN testbed.
[1]
J.Y. Kim,et al.
NGN architecture for IPTV service without effect on conversational services
,
2006,
2006 8th International Conference Advanced Communication Technology.
[2]
Robert D. Gaglianello,et al.
Experiences with blending HTTP, RTSP, and IMS [IP Multimedia Systems (IMS) Infrastructure and Services]
,
2007,
IEEE Communications Magazine.
[3]
Michael Luna,et al.
Experiences with Blending HTTP, RTSP, and IMS
,
2007
.
[4]
Jinoo Joung,et al.
Overview of ITU-T NGN QoS Control
,
2007,
IEEE Communications Magazine.
[5]
Chae-Sub Lee.
IPTV over Next Generation Networks in ITU-T
,
2007,
2007 2nd IEEE/IFIP International Workshop on Broadband Convergence Networks.
[6]
Ravi Vaidyanathan,et al.
IPTV service assurance
,
2006,
IEEE Communications Magazine.