Title :
Dynamic routing and wavelength assignment for limited-range wavelength conversion
Author :
Qin, Hao ; Zhang, Shi ; Liu, Zengji
Author_Institution :
Nat. Key Lab. on Integrated Services Network, Xidian Univ., Xi´´an, China
fDate :
3/1/2003 12:00:00 AM
Abstract :
We propose a dynamic routing and wavelength assignment algorithm in an all-optical network with limited-range wavelength conversions. For each randomly arrived request, the correlation of different wavelengths on different links in all possible routes is described by the wavelength weight in our algorithm. We try to assign wavelengths on each candidate route using a shortest-path algorithm based on the wavelength weight and choose the best as its route and wavelength assignment scheme. Numerical results obtained for NSFNET and a 12-node ring show that our algorithm can greatly reduce the blocking probability and the number of required conversions under uniform traffic or traffic dominated by larger hop routes.
Keywords :
optical fibre networks; optical wavelength conversion; probability; telecommunication network routing; telecommunication traffic; NSFNET; all-optical network; blocking probability reduction; dynamic routing and wavelength assignment algorithm; limited-range wavelength conversion; ring network; shortest-path algorithm; uniform traffic; wavelength correlation; wavelength routed optical network; wavelength weight; All-optical networks; Frequency conversion; Optical fiber networks; Optical frequency conversion; Optical wavelength conversion; Telecommunication traffic; Wavelength assignment; Wavelength conversion; Wavelength division multiplexing; Wavelength routing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2003.809991