Algorithms for QoS-Based Wavelength Routing

  • Admela Jukan
Part of the Progress in Communication Networks book series (PROGRCOMM, volume 1)


Wavelength routing is a term accepted by many researchers to describe two functions: routing and wavelength allocation (RAW). By means of routing functions, the concatenated WDM links between source and destination can be found, while wavelength allocation refers to the allocation of a wavelength (channel) along each of these links. The term wavelength routing is, however, not just an abbreviation: these two problems, as shown in many of the works, are closely related and can be solved simultaneously. Since the mid-nineties, intensive research activities in the area of wavelength routing have taken place, impelled by the commercial availability of wavelength-routed network elements and systems. So far, the following two categories of approaches to wavelength routing have been pursued:
  • Pre-computed routing With pre-computed routing, the traffic matrix is known in advance and the network optimisation and design is made with respect to this matrix for both routing and wavelength allocation.

  • On-demand routing On-demand routing is characterised by the connection requests that arrive randomly and must be dynamically accommodated along the time axes within a permanently changing network environment.


Graph Transformation Network Element Wavelength Conversion Connection Request Wavelength Converter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Wien 2001

Authors and Affiliations

  • Admela Jukan
    • 1
  1. 1.Institute of Communication NetworksVienna University of TechnologyViennaAustria

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