Abstract
A customer-controlled dynamic bandwidth allocation scheme is proposed to
support differentiated services in a passive optical network with broadcast
capabilities on the upstream wavelength. Network performance is evaluated
using realistic traffic models through simulations and numerical analyses.
Results show that stringent quality-of-service requirements of real-time services
can be met whilst maintaining overall high bandwidth utilization regardless
of the uniformity of traffic loads between customers. Compared with current
solutions based on centralized control carried out at the central office,
the proposed dynamic bandwidth allocation scheme offers significant savings
of the downstream bandwidth. The downstream capacity is optimized for conventional
broadcast services, irrespective of the network size and number of customers
supported.
© 2006 Optical Society of America
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