Intemet QoS over passive optical networks

A Passive Optical Network (PON), with low-cost point-to-multipoint fiber infrastructure, is an emerging access network architecture. This paper presents an Internet QoS enabled media access control (MAC) protocol for a PON. The considered Internet QoS is Differentiated services with three classes: Expedited Forwarding (EF), Assured Forwarding (AF) and Best Effort (BE). Through the proposed scheme, the network resources are dynamically and adaptively allocated to the three-class traffic in the meantime the required quality of service is also maintained. The performance of the Proposed MAC protocol is evaluated through simulations. Simulation results demonstrate that the proposed scheme fully utilizes the network resources and provides the required QoS for each traffic class under different load conditions.