Multicast routing and wavelength assignment in multihop optical networks

Multihop Routing and Wavelength Assignment Algorithm for Optical WDM Networks

We propose a new routing and wavelength assignment scheme that improves the blocking probability of WDM networks and offers a very good utilizat ion of the networks resources. This heuristic results in high quality of service, prioritization of the LAN networks and lower installat ion costs compared with the traditional RWA algorithms applied in WDM networks. It is based on the distributed Dijk...

Routing and Wavelength Assignment in Optical Networks

Routing and wavelength assignment for WDM multicast networks

The multicast routing and wavelength assignment (MC-RWA) problem is generally studied with the objective to maximize the number of multicast groups admitted, or equivalently, to minimize the call (or session) blocking probability given a certain number of wavelengths. While this approach is sound, a better objective is to maximize the total number of users served (i.e., minimizing the user bloc...

Routing and Wavelength Assignment in All-Optical Networks with Multicast Traffic

In this paper, we consider the Routing and Wavelength Assignment (RWA) problem in all-optical wavelength-routing networks with multicast traac. The RWA problem has been proved NP-hard. Many researchers are working on this problem and many algorithms have been proposed to solve the RWA problem. However, most of these algorithms only consider unicast traac, while with multicast traac, the blockin...

Routing and wavelength assignment strategies in optical networks

We consider the routing and wavelength assignment (RWA) problem on wavelength division multiplexing (WDM) networks without wavelength conversion. When the physical network and required connections are given, RWA is the problem to select a suitable path and wavelength among the many possible choices for each connection such that no two paths using the same wavelength pass through the same link. ...