caa a22 4500 445870842 CHVBK 20180317145511.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s11107-011-0314-2 doi (NATIONALLICENCE)springer-10.1007/s11107-011-0314-2 A methodology to design the link cost functions for impairment aware routing algorithms in optical networks [Elektronische Daten] [Daniel Chaves, Douglas Aguiar, Carmelo Bastos-Filho, Joaquim Martins-Filho] We propose a methodology to design the link cost function and, consequently, a systematic form to design a RWA algorithm. We call this methodology link cost function design (LCFD) and it consists of four steps: The choice of the link cost function input variables, the expansion of the cost function in terms of a series, the selection of an overall network performance indicator as the optimization target, and finally, the execution of an optimization process to find the series coefficients that optimize the network performance indicator based on off-line network simulations. The optimization process is performed by a computational intelligence technique, the particle swarm optimization. The proposed methodology (LCFD) is used to design an adaptive IA-RWA algorithm, which we call Power Series Routing (PSR). The effectiveness of both methodology and IA-RWA algorithm is investigated. The PSR is compared with other algorithms found in the literature by means of computational simulations and our proposal presented lower blocking probabilities with shorter computation time. Furthermore, we investigate the sensitivity and the ability of the proposed PSR to adapt itself to topological changes in the network due to both link/node addition/failure. We also investigate the behavior of the PSR in a scenario where the traffic load distribution is randomly chosen (non-uniform traffic), and we compared it to other three routing algorithms. Springer Science+Business Media, LLC, 2011 Optical networks nationallicence RWA nationallicence Biologically inspired networking nationallicence Particle swarm optimization nationallicence Quality of transmission nationallicence Cross-layer planning nationallicence Physical impairments nationallicence Chaves Daniel Department of Electronics and Systems, Federal University of Pernambuco, 50740-550, Recife, PE, Brazil aut Aguiar Douglas Department of Electronics and Systems, Federal University of Pernambuco, 50740-550, Recife, PE, Brazil aut Bastos-Filho Carmelo Polytechnic School of Pernambuco, University of Pernambuco, 50720-001, Recife, PE, Brazil aut Martins-Filho Joaquim Department of Electronics and Systems, Federal University of Pernambuco, 50740-550, Recife, PE, Brazil aut Photonic Network Communications Springer US; http://www.springer-ny.com 22/2(2011-10-01), 133-150 1387-974X 22:2<133 2011 22 11107 https://doi.org/10.1007/s11107-011-0314-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-011-0314-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chaves Daniel Department of Electronics and Systems, Federal University of Pernambuco, 50740-550, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Aguiar Douglas Department of Electronics and Systems, Federal University of Pernambuco, 50740-550, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Bastos-Filho Carmelo Polytechnic School of Pernambuco, University of Pernambuco, 50720-001, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Martins-Filho Joaquim Department of Electronics and Systems, Federal University of Pernambuco, 50740-550, Recife, PE, Brazil aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 22/2(2011-10-01), 133-150 1387-974X 22:2<133 2011 22 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer