Trading Regeneration and Spectrum Utilization in Code-Rate Adaptive Flexi-Grid Networks

Towards solving practical problems of large solution space using a novel pattern searching hybrid evolutionary algorithm – An elastic optical network optimization case study

“…These papers address static network planning problems (Capucho & Resendo, 2013;Cerutti, Martinelli, Sambo, Cugini, & Castoldi, 2014;Eira, Santos, Pedro, & Pires, 2014;Klinkowski, 2013;Lezama, Castanon, Sarmiento, & Martins, 2014;Long et al, 2013;Patel, Ji, Jue, & Ting, 2012;Velasco, Wright, Lord, & Junyent, 2013;, and dynamic scenarios (Almeida et al, 2013;Huang & Li, 2014;Long et al, 2012; as well. Generally, the optimization criteria in these problems are spectrum usage and request blocking probability for static and dynamic cases, respectively.…”

“…Next, they combine two metaheuristic methods to solve these subproblems: genetic algorithm for the former one and simulated annealing for the latter one. Concurrently, the authors of Cerutti et al (2014), Velasco et al (2013) and Xiang et al (2012) discuss multi-objective algorithms. In Xiang et al (2012), the genetic algorithm is proposed that minimizes spectrum usage if requests are not likely to be blocked (small network traffic) and request blocking probability otherwise.…”

“…In Xiang et al (2012), the genetic algorithm is proposed that minimizes spectrum usage if requests are not likely to be blocked (small network traffic) and request blocking probability otherwise. The authors of Velasco et al (2013) propose an evolutionary-based method that faces optimization criteria defined as a combination of spectrum usage and network cost, wherein the authors of Cerutti et al (2014) present genetic algorithm that balances contrasting objectives of minimizing the regenerators requirements and spectrum utilization. An interesting research is also presented in Huang and Li (2014), where the genetic algorithm supported by a priority-based encoding of selected lightpaths is presented.…”

Parameter selection in optical networks with variable-code-rate transceivers

“…In variable-code-rate transceivers, however, the trade-off relationships are considerably more complex. Recently, the first works on variable-rate coding for optical transmission [4], [5], [6], [7] and optical networking [8], [9], [10] have been proposed.…”

Service Provisioning with Energy-Aware Regenerator Allocation in Multi-Domain EONs

“…However, the schemes proposed in them cannot address the unique features of EONs, e.g., flexible spectrum allocation and distance-adaptive modulation selection, and hence are not suitable for EONs. For static network planning, recent studies have considered the problem of regenerator placement in translucent EONs [10][11][12]. In [10], the author verified that the spectrum utilization in an EON can be reduced considerably by introducing regenerators.…”