Abstract
This paper introduces a novel framework for dynamic bandwidth assignment
(DBA) in gigabit passive optical networks (GPONs) employing the Offset-Based
Scheduling with Flexible Intervals (OSFI) concept in order to achieve
distribution of bandwidth in such networks ensuring not only high system
utilization but also clean-cut quality of service (QoS) differentiation
based on the individual demands of user services. In addition, ways to
enhance efficiency in the case of next generation long-reach GPONs are
discussed. A thorough description of the proposed mechanisms is provided,
while the improved system performance is verified using simulations.
© 2009 IEEE
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