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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