Abstract
Problem statement: The lack of uniformity in the choice of simulation platforms for optical WDM networks stands behind the difficulty of developing a common simulation environment. Correlating WDM unidirectional slotted ring network to Discrete Event Simulation (DES) encompassing event definition, time advancing mechanism and scheduler has yet to be developed. Approach: The study focused on the proposed and the development of an event based discrete simulator for the WDM unidirectional slotted ring n etwork to facilitate the reuse of the protocol modules under a common simulation environment. The proposed network architecture implemented for the developed simulator employs a separate wave length as the control information channel. This control information enabled the nodes to monitor th eir access to the transmission media. Each node was equipped with a tunable transmitter and fixed r eceiver for data communication. Access nodes were equipped with a fixed transmitter and fixed receive r for the control information exchange. The developed simulator had derived the use of dividing the wavelength into slots. Nodes used these slots to transmit fixed size packets. Slots can be reused by the access node after receiving packets by the deployment of the spatial reuse scheme, thus enhanc ing the bandwidth utilization. The developed simulator had derived the set of the parameters, ev ents, performance metrics and other unique WDM simulator elements according to a detailed analysis of the base model. Results: The network delay and packet loss were investigated and compared to a ben chmark of the modeled domain. Successful deployment of the developed simulator was proven by the generated results. Conclusion: Extensive performance analysis of WDM unidirectional slotted ring network can be deployed using the developed simulator with low computational overheads. Further enhancements were to extend the developed simulator for bidirectional slotted ring supporting fairness control and considering both uniform and non-uniform traffic.
Highlights
Optical Networks has enabled the deployment of applications such as video conferencing, remote medical assistant, TV streaming and distributed games, applications and databases
This study presents the development of a Discrete Event Simulation (DES) for Wave Division Multiplexing (WDM) ring network and a comprehensive model development
Checks the control channel information. This information is utilized for the controlling of the scheduling process for the other events To determine the appropriate Longest Queue (LQ) to transmit from based on the available slots
Summary
Optical Networks has enabled the deployment of applications such as video conferencing, remote medical assistant, TV streaming and distributed games, applications and databases. The need of such frameworks is the motivation behind this study to present a developed simulator for unidirectional slotted WDM ring network. The focus of the study is on the development of an event based discrete simulator for the optical unidirectional slotted ring network. Unidirectional WDM slotted ring network: The critical design issues of unidirectional slotted ring, the respective architecture and the MAC protocol applied in the developed simulator environment requires detail analysis.
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