A mathematical model for wavelength assignment in wavelength division multiplexing mesh networks with wavelength reuse

Joint routing and wavelength assignment in wavelength division multiplexing networks for permanent and reliable paths

In this paper, we tackle the routing and wavelength assignment problem for wavelength division multiplexing (WDM) networks containing permanent and reliable wavelength paths (WPs). It consists of 4nding the route and the wavelength of each WP for the normal state of the network and for the important failure scenarios. These scenarios might be the most probable failure scenarios or simply the fa...

Variable neighbourhood search for resolving routing and wavelength assignment problem in optical wavelength-division multiplexing networks

Since the issue of finding optimal signal routes imposes itself as one of the main challenges within the framework of optimal networks, this paper aims at illustrating the development of a new, mixed-integer mathematical model for solving the static routing and wavelength assignment (RWA) problem in optical WDM networks and presents the comparison of results obtained by heuristics and CPLEX com...

Efficient Multipath Routing and Wavelength Allocation Using Traffic Grooming in Optical Wavelength Division Multiplexing Mesh Networks

In optical WDM mesh networks, traffic grooming is essential in order to utilize the bandwidth efficiently to minimize the cost and meet the user service requirement. By grooming traffic, it is possible to reduce the total cost of all Add drop multiplexer needed. Also for the high processing capability in a WDM network, the path should be capable of carrying the traffic without any failure. In t...

QoS Aware Wavelength Assignment in Wavelength Division Multiplexing Based Optical Networks

Wavelength Division Multiplexing (WDM) is used in optical networks to implement data circuits. These circuits allow exchange of information as a measure of wavelength in optical domain. Quality of Service (QoS) provisioning is one of the issues in WDM optical networks. This paper discusses different QoS aware Routing and Wavelength Assignment (RWA) algorithms. Some unaddressed issues are identi...

Designing Survivable Wavelength Division Multiplexing (WDM) Mesh Networks