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On Routing and Spectrum Assignment in Rings

Journal of Lightwave Technology, 2015
We present a theoretical study of the routing and spectrum assignment (RSA) problem in ring networks. We first show that the RSA problem with fixed-alternate routing in general-topology (mesh) networks (and, hence, in rings as well) is a special case of a multiprocessor scheduling problem.
Sahar Talebi   +4 more
openaire   +1 more source

Fragmentation aware routing and spectrum assignment algorithm

2014 IEEE International Conference on Communications (ICC), 2014
In flex-grid (elastic) networks, the spectrum can be allocated at a much finer granularity than it can be allocated in WDM networks. However, the dynamic establishment and tear down of lightpaths yields to the fragmentation of the spectrum with consequent increase in blocking of requests for connection establishment.
Pedro M. Moura   +2 more
openaire   +1 more source

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