In this paper, two bio-inspired Quality of Service (QoS) multicast algorithms are proposed in IP over dense wavelength division multiplexing (DWDM) optical Internet. Given a QoS multicast request and the delay interval required by the application, both algorithms are able to find a flexible QoS-based cost suboptimal routing tree. They first construct the multicast trees based on ant colony opti...

In this paper, two bio-inspired Quality of Service (QoS) multicast algorithms are proposed in IP over dense wavelength division multiplexing (DWDM) optical Internet. Given a QoS multicast request and the delay interval required by the application, both algorithms are able to find a flexible QoS-based cost suboptimal routing tree. They first construct the multicast trees based on ant colony opti...

We propose three routing strategies for the routing and wavelength assignment (RWA) of scheduled and random lightpath demands in a wavelength-switching mesh network without wavelength conversion functionality. Scheduled lightpath demands (SLDs) are connection demands for which the set-up and tear-down times are known in advance as opposed to random lightpath demands (RLDs) which are dynamically...

In today’s internet world there is a growing demand of network bandwidth. Where traditional copper fibers offer very less bandwidth, optical fibers can offer very lager bandwidth. So, there is a growing sense of using optical fibers. Optical networks generally use wavelength division multiplexing (WDM) technique, which is the backbone of future generation internet. In WDM networks fibers are lo...

In optical WDM networks, transmission of information along optical lines is advantageous since it has high transmission capacity, scalability, feasibility and also high reliability. But large amount of information is being carried; any problem during transmission can lead to severe damage to the data being carried. Hence it is essential to consider the routing as well as the wavelength assignme...

In this paper, we propose an ant-based algorithm for dynamic routing and wavelength assignment (RWA) in WDM optical networks under the wavelength continuity constraint. By adopting a new routing table structure and keeping a number of ants in the network to cooperatively explore the network states and continuously update the routing tables, our new ant algorithm can efficiently support the ants...

This paper considers a network design problem introduced in 11,12 in which resource allocation is performed within a Wavelength Division Multiplexing (WDM) optical ring network to reduce overall equipment cost. The problem can be summarized as follows. The Add-Drop Multiplexers (ADM's) that are used to terminate lightpaths in an optical (SONET/SDH) ring are expensive and therefore a naive imple...

This paper considers all the major transmission impairments while establishing a call in a wavelength-routed optical network. An event-driven simulation which incorporates online BER calculations accepts a call only if the BER at the destination node is less than 10. This approach ensures that no resources are wasted on those connections which cannot deliver an acceptable signal quality.

All-optical WDM networks are fast becoming the choice for future wide-area backbone networks. In this paper, we investigate the online RWA (Routing and Wavelength Assignment) problem for incremental connection requests in all-optical Wavelength-Division-Multiplexed networks, with the objective of maximizing the profit that can be made. Specifically, each connection request between a pair of nod...

This project is to investigate a distributed algorithm for solving the dynamic routing and wavelength assignment (RWA) problem using both dedicated and shared path protection techniques for survivable wavelength division multiplexing (WDM) networks. Our goal of this project is to minimize the number of wavelength-links for each new connection, and satisfy communication requests as much as possi...