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Tecnica di previsione precoce della perdita di burst nelle reti ottiche a commutazione di burst (OBS)
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ISBN10: 6630268121
ISBN13: 9786630268126
Publisher: Edizioni Sapienza
Published: Aug 4 2026
Pages: 88
Weight: 0.28
Height: 0.21 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786630268126
Publisher: Edizioni Sapienza
Published: Aug 4 2026
Pages: 88
Weight: 0.28
Height: 0.21 Width: 6.00 Depth: 9.00
Language: Italian
La rete ottica a multiplexing a divisione di lunghezza d'onda (WDM) si è affermata come tecnologia di trasmissione per la dorsale Internet di prossima generazione. Nelle reti WDM, l'enorme larghezza di banda offerta dalla fibra viene gestita suddividendola in una serie di lunghezze d'onda, ciascuna delle quali funge da canale di comunicazione indipendente con una velocità di trasmissione dati nell'ordine dei Gbps. Una delle questioni chiave nelle reti OBS è la pianificazione efficiente. Esistono fondamentalmente due tipi di algoritmi di pianificazione utilizzati nelle reti OBS: l'algoritmo di pianificazione a orizzonte e l'algoritmo di pianificazione con riempimento dei vuoti. Calcolare la probabilità di perdita dei burst prima della pianificazione contribuisce a ridurre il tasso di perdita dei burst. La precedente tecnica di calcolo della probabilità di perdita dei burst si basava sulla dimensione del burst e sul tempo di offset ed era implementata sui nodi periferici. Stiamo estendendo questa tecnica per migliorare l'efficienza degli algoritmi di pianificazione. Pertanto, questo libro propone una tecnica di previsione anticipata della perdita di burst anche a livello del nodo centrale, che elabora i pacchetti di controllo dei burst, consentendo così l'utilizzo di tali pacchetti per la pianificazione. I risultati della simulazione mostrano che la tecnica proposta migliora il rapporto di perdita dei burst.
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