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RWA problem for designing DWDM networks – delay against capacity optimisation.
- Source :
-
Electronics Letters (Institution of Engineering & Technology) . 8/2/2007, Vol. 43 Issue 16, p892-893. 2p. 1 Diagram, 1 Chart, 1 Graph. - Publication Year :
- 2007
-
Abstract
- Adaptation of QoS in DWDM optical networks routing and the wavelength assignment (RWA) problem, known as an NP-hard problem, are addressed. The QoS constraint based routing RWA computes lightpaths for the original-destination node pair, (O, D), to meet the QoS propagation delay requirements. A heuristic algorithm based on a genetic algorithm (GA) is then developed to solve this problem. A simulation program is developed to demonstrate the efficiency of the GA for the COST 239 network. The trade-off between the capacity and the propagation delay has been analysed. Results show that the trade-off is 8.7% of the average capacity, increasing to 10.6% decrease for the average delay. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00135194
- Volume :
- 43
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Electronics Letters (Institution of Engineering & Technology)
- Publication Type :
- Academic Journal
- Accession number :
- 26017640
- Full Text :
- https://doi.org/10.1049/el:20071219