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Posted

Boas!

Tenho estado a estudar para um exame que vou ter em Setembro e agora apareceu-me uma pergunta que não consigo responder ?

Se alguém me souber ajudar, agradecia..., visto que nem a Wikipedia me resolve o problema ?

Porque é dito que a comuntação por pacotes emprega multiplexagem por estatistica? Compare a multiplexagem por estatistica com a multiplexagem usada em TDM1

1 Time Division Multiplexing

abraços, HecKel

EDIT: Encontrei isto..., de kk das formas dava-me jeito mais respostas 😄

Posted

time division multiplexing - (TDM) A type of multiplexing where two or more channels of information are transmitted over the same link by allocating a different time interval ("slot" or "slice") for the transmission of each channel. I.e. the channels take turns to use the link. Some kind of periodic synchronising signal or distinguishing identifier is usually required so that the receiver can tell which channel is which.

TDM becomes inefficient when traffic is intermittent because the time slot is still allocated even when the channel has no data to transmit. Statistical time division multiplexing was developed to overcome this problem.

Acho que deve ajudar se precisares de mais alguma coisa apita!

Abraços,

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