An integrated DWDM optical network design with traffic grooming

With the increasing deployment and growth in transport networks based on DWDM technology, solving the classic network design and planning problem of optimizing cost and scalability for given traffic requirements becomes ever critical. Ultimately, optimization for DWDM network design should take place in a four-dimensional space: lightpath determination, lightpath routing, wavelength assignment, and traffic grooming. The four operations are tightly correlated with each other and should be jointly considered in network design and optimization. In particular, lightpath determination centers the overall network design. This paper provides an innovative integrated framework for manipulating these four design operations to optimize the cost and scalability.