Naslov
Benefits of Wavelength Conversion in Optical WDM Mesh Networks with Dynamic Routing

Autori
Lukač, Krešimir ; Lukač, Zrinka ; Tkalić, Mladen

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Networks / Fahringer, Thomas - : International Association of Science and Technology for Development (IASTED), 2006, 117-122

ISBN
0-88986-570-1

Skup
24th IASTED International Conference on Parallel and Distributed Computing and Networks

Mjesto i datum
Innsbruck, Austrija, 14.02.2006. - 16.02.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
WDM; RWA; wavelength conversion; learning automata

Sažetak
This study focuses on the routing and wavelength assignment (RWA) problem in wavelength-routed optical WDM networks. We investigate the effectiveness of adaptive algorithms based on the learning automata concept applied in relatively large networks as opposed to traditional fixed alternate routing. We also study the benefits of full wavelength conversion on the resulting connection blocking of the proposed routing algorithm as compared to routing without wavelength conversion. One of the main advantages of the proposed algorithm is that full knowledge of the network state is not necessary. By simulating a mesh network we report performance results under different traffic conditions. The study shows that both approaches have similar behaviour in case of a uniform capacity distribution with or without the wavelength continuity constraint. However, if link failures appear i.e. in case of a non-uniform capacity distribution which corresponds to practical network realisations the proposed algorithm outperforms fixed alternate routing. It is especially superior if in the previous case wavelength conversion is enabled thus resulting with large blocking reductions.

Izvorni jezik
Engleski

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