Comparison of wavelength requirements between two wavelength assignment methods in survivable WDM networks

Polynomial Time Algorithm (PTA) to generate a survivable ring virtual topology for Optical WDM based on the Hamiltonian Circuit Detection Heuristics(HCDH)

The Routing and Wavelength Assignment (RWA) problem is known to be NP-hard for general Physical Topology (PT) in optical networks. We have analyzed the survivability of the optical network under Survivable Routing and Shared Path Protection (SPP) for various topologies and suggested two survivable RWA algorithms which are shown to perform better under certain performance matrix by simulation. G...

Multilevel Feedback Queue Wavelength Assignment Algorithm in Survivable Optical Wdm Networks

In survivable optical WDM networks, finding physical routes and assigning wavelengths to light paths plays a vital role in the information transmission systems. Wavelength assignment (WA) problem is a major concern than assigning routes to the light paths. Earlier wavelength assignment algorithm suffers from unbalanced utilization of wavelength that leads to blocking probability for any connect...

A Novel Protection Guaranteed, Quality of Transmission Aware Routing and Wavelength Assignment Algorithm for All-optical Networks

Transparent All Optical Networks carry huge traffic and any link failure can cause the loss of gigabits of data; hence protection and its guarantee becomes necessary at the time of failure. Many protection schemes were presented in the literature, but none of them speaks about protection guarantee. Also, in all optical networks, due to absence of  regeneration capabilities, the physical layer i...

Distributed Dynamic Lightpath Allocation in Survivable WDM Networks

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...

On the study of routing and wavelength assignment approaches for survivable wavelength - routed WDM mesh networks