Title :
Dynamic reconfiguration of wavelength-routed WDM networks
Author :
Alfouzan, Ibrahim ; Jayasumana, Anura
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado State Univ., Fort Collins, CO, USA
Abstract :
The problem of reconfiguring wavelength-routed optical networks when the traffic demand changes is considered. When reconfiguring the wavelength assignment according to the traffic demand, it is important to reduce the number of receivers that need to be retuned. Furthermore, after the reconfiguration, the load needs to be balanced among the wavelengths. The tradeoff here is between the number of retunings and the degree of network load balance. After tracking real traffic demand to see the effect of traffic changes on the network load balance, an algorithm has been developed for wavelength reconfiguration, so that the demand on the most loaded channel is reduced by exchanging one node with the least loaded channel. The most and least loaded channel balance (MLLCB) algorithm provides very good results in terms of the required number of retunings and the load balance. Comparison of MLLCB algorithm with GLPT algorithm shows a very significant improvement in performance
Keywords :
optical fibre networks; telecommunication traffic; wavelength division multiplexing; WDM networks; dynamic reconfiguration; least loaded channel; most loaded channel; network load balance; optical networks; traffic demand; wavelength assignment; wavelength routing; Bandwidth; Laser tuning; Optical fiber networks; Optical receivers; Optical transmitters; Telecommunication traffic; Tunable circuits and devices; WDM networks; Wavelength assignment; Wavelength division multiplexing;
Conference_Titel :
Local Computer Networks, 2001. Proceedings. LCN 2001. 26th Annual IEEE Conference on
Conference_Location :
Tampa, FL
Print_ISBN :
0-7695-1321-2
DOI :
10.1109/LCN.2001.990825