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Title: | Distribuição eficiente de IPTV |
Author: | Pisco, Tiago Rafael |
Advisor: | Pinto, Armando Nolasco |
Keywords: | Engenharia electrónica Redes de telecomunicações Protocolos de redes Ethernet (Redes de computadores) |
Defense Date: | 2011 |
Publisher: | Universidade de Aveiro |
Abstract: | As redes de transporte de telecomunica c~oes foram inicialmente concebidas
para transportar chamadas telef onicas atrav es de tecnologias baseadas
em comuta c~ao de circuitos. A adapta c~ao destas redes para transportar
tr afego de dados apresenta ine ci^encias que contribuem para que as
receitas geradas pelos operadores n~ao acompanhem a largura de banda
fornecida aos clientes. Este facto tem vindo agravar-se com o crescimento
de servi cos como o IPTV, servi co que requer elevada largura de banda,
varia c~ao acentuada da taxa de transmiss~ao e liga c~oes ponto-multiponto.
A tecnologia Ethernet surge como ponto de partida (e chegada, pois
mais de 95% do tr afego de dados e gerado ou tem como destino uma
porta Ethernet [1]) para novas tecnologias de rede de transporte, chamadas
tecnologias Carrier Ethernet. Neste documento e estudada a tecnologia
Ethernet, os requisitos de uma tecnologia Carrier Ethernet e a promissora
tecnologia MPLS-TP, ainda em processo de normaliza c~ao.
Com o prop osito de otimizar a distribui c~ao do servi co IPTV e proposto
um cen ario, onde se veri ca que o recurso a transmiss~ao combinada
de canais unicast e multicast pode resultar num uso mais e ciente dos
recursos da rede. The telecommunication aggregation networks were initially designed to transport phone calls, using technologies based on circuit switching. The adaptation of those networks to transport data trafic has some ineficiencies, which results, that the operator`s revenues do not follow the bandwidth provided to customers. This fact has become a growing problem with the development of services such as IPTV, a service which requires high bandwidth, high transmission rate variation and point-multipoint connections. The Ethernet appears as a starting point (and ending as well, since more than 95 % of the data tra c is generated or is destinated to an Ethernet port [1]) for new aggregation network's technologies, called Carrier Ethernet technologies. This paper, presents a study of the Ethernet technology, requirements for Carrier Ethernet technologies and the promising MPLS-TP, still in the standardization process. In order to optimize IPTV service distribution, there is proposed a scenario, where it was verified that the combined use of unicast and multicast transmission can result in an eficient use of network resources. |
Description: | Mestrado em Engenharia Electrónica e Telecomunicações |
URI: | http://hdl.handle.net/10773/8590 |
Appears in Collections: | UA - Dissertações de mestrado DETI - Dissertações de mestrado |
Files in This Item:
File | Description | Size | Format | |
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248849.pdf | 5.07 MB | Adobe PDF | View/Open |
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