University of Hertfordshire

From the same journal

By the same authors

Full-Service MAC Protocol for Metro-Reach GPONs

Research output: Contribution to journalArticlepeer-review


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Original languageEnglish
Pages (from-to)1016-1022
JournalJournal of Lightwave Technology
Publication statusPublished - 2010


An advanced medium access control protocol is presented demonstrating dynamic bandwidth allocation for long-reach gigabit-capable passive optical networks (GPONs). The protocol enables the optical line terminal to overlap the idle time slots in each packet transmission cycle with a virtual polling cycle to increase the effective transmission bandwidth. Contrasting the new scheme with developed algorithms, network modeling has exhibited significant improvement in channel throughput, mean packet delay, and packet loss rate in the presence of class-of-service and service-level differentiation. In particular, the displayed 34% increase in the overall channel throughput and 30 times reduction in mean packet delay for service-level 1 and service-level 2 optical network units (ONUs) at accustomed 50% ONU load constitutes the highest extended-reach GPON performance reported up to date.


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