2026-04-17T02:50:20Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/239742026-01-30T06:22:13Zcom_2072_1033col_2072_452950

Split spectrum-enabled route and spectrum assignment in elastic optical networks Pagès Cruz, Albert Perelló Muntan, Jordi Spadaro, Salvatore Junyent Giralt, Gabriel Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica Optical communications Elastic optical networks Split spectrum RSA Efficient Comunicacions òptiques The Split Spectrum Approach (SSA) in elastic optical networks is based on splitting a demand into smaller sub-signals when a blocking situation arises, either due to the lack of spectral resources or transmission reach reasons. In this paper, we propose a mechanism based on a Mixed Integer Linear Programming (MILP) formulation for efficiently serving incoming demands in SSA-based elastic optical networks. Moreover, we also present a lightweight heuristic mechanism for scenarios where the MILP mechanism may suffer from scalability issues. The benefits of the proposal are highlighted through illustrative results. Furthermore, we compare two SSA implementations available in the literature in terms of relative transponder cost. Peer Reviewed Postprint (published version) 2014-07-01 Article http://www.sciencedirect.com/science/article/pii/S1573427714000332 Restricted access - publisher's policy