Method and Model for Bandwidth Utilization in WDM Passive Optical Networks

This paper proposes a Bandwidth Utilization in wavelength-divisionmultiplexed passive optical network (WDM-PON) subject to requirements of fairness, efficiency, and cost. An Optical Line Terminal (OLT)-centric bandwidth allocation model is proposed which employs a credit pooling technique combined with a weighted-share policy to partition the upstream bandwidth among different classes of service, and to prevent Optical Network Units (ONUs) from monopolizing the bandwidth. We propose a multi-objective network design problem for the traffic grooming and routing in WDM networks. A dynamic subcarrier assignment algorithm that respects quality of service by offering decreased average delay is proposed. Moreover, effective methods to improve its performanceand reduce its complexity are provided. In this work we have concentrated on the effects of bandwidth, delay and bit rate. This work discusses the improvement in blocking probably for incoming requests while performing routing by proposed algorithm and the traditional shortest path algorithm. KeywordsPON, FDM-PON, Bandwidth Utilization-PON, Traffic Grooming, Routing in WDM.