Abstract
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.
© 2010 IEEE
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