IPTV services should use an IP multicast solution for a network bandwidth efficient delivery of the media contents. PIM-SM is the most commonly used IP multicast routing protocol in IPTV systems. A short introduction to the operation of PIM-SM is given. Its fault tolerance is examined by experimenting on a mesh topology multicast test network built up by XORP routers in a virtualized environmen...

This paper aims at the delivery of adaptive and personalized multimedia content in interactive IPTV environments, using programmable IP services through the MPEG-21 standard, supporting also features for users with disabilities. Moreover, we propose a system that adapts to users’ preferences using profile separation, not only for individual users but also for user groups as a whole. The system ...

The usage of Internet Protocol TV (IPTV) deployments in the consumer electronics market is growing very popular in recent years. In IPTV multicast systems, quality of experience is a very critical factor for user satisfaction. Existing and future IPTV systems will offer a large number of channels to users. The most important factors that affect the quality of experience in IPTV systems are chan...

P2P IPTV applications arise on the Internet and will be massively used in the future. It is expected that P2P IPTV will contribute to increase the overall Internet traffic. In this context, it is important to measure the impact of P2P IPTV on the networks and to characterize this traffic. During the 2006 FIFA World Cup, we performed an extensive measurement campaign. We measured network traffic...

In the past few years there has been an increasing trend towards personalization in the TV world. IMS-based IPTV is a good example of a highly personalized IPTV architecture, featuring an advanced identity management subsystem. This article studies a next step in the personalization of the television experience: concurrent use of TV services that are supported by the IMSbased IPTV system. That ...

This letter proposes a new fast network configuration scheme that realizes an IP interface that allows users to view Internet Protocol TV (IPTV) in IPv6 networks more quickly than is possible with the current configuration procedure. The new scheme, a hybrid combination of IPv6, address information, and non-IP information, especially the Domain Name Service, is newly designed based on a technic...

Rapid service creation stemmed from the convergence of fixed line and mobile telephony with the Internet has made user acceptance to be a crucial factor for the success of the telecommunication business. Telecommunications research, therefore, can no longer be considered only from the pure engineering perspective. Within this paper, we present the concept of service quality for future NGN netwo...

The IPTV channels require high bandwidth for high clear television programs.. The use of multicast for IPTV service is considered necessary to resolve such problem. IP multicast is a bandwidth-conserving technology that reduces traffic by simultaneously delivering single stream of data to thousand costumers. Applications that take advantage of multicast include IPTV services, distance learning,...

IPTV, or Internet-Based TV broadcasting is going to significantly change the way people obtain information, get entertainment, and possibly collaborate with each other. Compared with today’s TV system, IPTV gives the viewers more choice as to what to watch and how to watch, and allows users to broadcast their own programs easily, thus “democratizing” information broadcasting. To realize the vis...