Modeling and evaluation of a reconfiguration framework in WDM optical networks

Authors:
Sungwoo Tak;Donggeun Lee;Passakon Prathombutr;E. K. Park
Affiliations:
Department of Computer Science and Engineering, Pusan National University, Busan, Republic of Korea;Department of Computer Science and Engineering, Pusan National University, Busan, Republic of Korea;National Electronics and Computer Technology Center, Thailand;School of Computing and Engineering, University of Missouri, Kansas City
Venue:
IWDC'05 Proceedings of the 7th international conference on Distributed Computing
Year:
2005

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Wavelength-routed optical networks: linear formulation, resource budgeting tradeoffs, and a reconfiguration study

IEEE/ACM Transactions on Networking (TON)

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Abstract

This paper studies a series of reconfiguration processes corresponding to a series of traffic demand changes in a WDM (Wavelength Division Multiplexing) optical network. The proposed reconfiguration framework consists of two objective functions, a reconfiguration process, and a reconfiguration policy. The two objective functions are AHT (objective function of minimizing Average Hop distance of Traffic) and NLC (objective function of minimizing Number of Lightpath routing Changes). The reconfiguration process finds a set of non-dominated solutions using the PEAP (Pareto Evolutionary Algorithm adapting the Penalty method) that optimizes two objective functions by using the concept of Pareto optimality. The reconfiguration policy picks a solution from the set of non-dominated solutions using the MDA (Markov Decision Action). Experimental results show that our reconfiguration framework incorporating the PEAP and the MDA yields efficient performance in the entire series of reconfiguration processes.