A Review of Routing and Wavelength Assignment Approaches for Wavelength- Routed Optical WDM Networks

摘要: This study focuses on the routing and WavelengthAssignment (RWA) problem in wavelength-routed optical WDM networks. Most of attention is devoted to such networks operating under wavelength-continuity constraint, which lightpaths are set up for connection requests between node pairs, a single lightpath must occupy same wavelength all links that it spans. In setting lightpath, route be selected assigned lightpath. If no available this route, then request blocked. We examine RWA review various approaches wavelengthassignment proposed literature. also briefly consider characteristics wavelength-converted (which do not have constraint), we associated research problems challenges. Finally, propose new scheme, called Distributed Relative Capacity Loss (DRCL), works well distributed-controlled networks, demonstrate performance DRCL through simulation.