Resumo

FERRO BOLIVAR, Ricardo Alonso  e  HERNANDEZ, Cesar. Are IPTV systems an imminent threat to the current broadcast media?. Tecnura [online]. 2011, vol.15, n.28, pp.101-122. ISSN 0123-921X.

This paper aims to show the features and advantages that IPTV systems on existing TV platforms taking into account the services and applications that can provide using the same network infrastructure. In this way many companies providing Internet services, base their strategies on providing an integration of services in one package, such as video, voice data. And so to compete with satellite TV and digital terrestrial television (TDT), which have shifted in some way with the implementation of new technologies for analog TV. Within the IPTV systems there are a number of parameters required to ensure quality of service (QoS) appropriate based on a minimum quality of user experience (QoE). In IPTV systems is sometimes difficult to provide an excellent quality of service (QoS) to the end user, because of the heterogeneity of technologies and architectures that are implemented in this type of transmission and in turn to a number of parameters involved in ensuring Quality of Service (QoS) desirable, as are the limited bandwidth that is required, delay, packet loss and other factors that lead to a series of problems that arise in the transmission of TV and involve to low QoE such as pixelation, picture freeze, etc.

Palavras-chave : Difusión; IPTV; QoE; QoS; Multicast; IPTV; QoE; QoS.

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