Resumo

MOUMTADI, F.; ESCOBAR-ARGOTA, M.; LOPEZ-MORENO, R.  e  LANDEROS-AYALA, S.. Reduction of channel zapping delay in IPTV services. Ing. invest. y tecnol. [online]. 2008, vol.9, n.3, pp.217-229. ISSN 2594-0732.

This paper analyses the existing delay within an IPTV system when a user selects an other channel, and a new algorithm is used to reduce it. Based on the adjacent groups method, which reduces the time acquisition of a new channel placing the order not only for that channel but also for the adjacent channels. There are two principles under coonsideration, one that there exists a sufficient bandwidht, and the other, a multicast transmission (Chunglae, 2004). At the end of the paper, the obtained results are compared against the present ones and the possibilities of the algorithm are determined.

Palavras-chave : IPTV; Adjacent Groups method; channel zapping delay; HG; IGMP.

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