Title: On the minimisation of resource utilisation for cost reduction in space division multiplexing based elastic optical networks

Authors: Sridhar Iyer

Addresses: Department of Electronics and Communication Engineering, S.G. Balekundri Institute of Technology, Nehru Nagar, Shivabasava Nagar, Belagavi, Karnataka 590010, India

Abstract: In the current work, for a Space Division Multiplexing (SDM) based Elastic Optical Network (EON) (SDM-b-EON), a routing, modulation format, spatial granularity (SpGl), and spectrum assignment (RMFSpGlSA) problem is formulated with an aim to minimise the overall network cost by reducing the resource usage. RMFSpGlSA is formulated as a joint integer linear program (J-ILP) model (J-ILP-RMFSpGlSA), and the ILP-RMFSpGl+SA model which successively solves the RMFSpGl and the SA problems. Extensive simulations are conducted to evaluate the performances of the two formulated ILP models with an aim to find the 'best' SpGl value under various conditions. The obtained results demonstrate that fine values of SpGl are mostly chosen with the widening of guardband width values, and with an increase in the mean bit-rate values of demands, a coarse value of SpGl is mostly chosen. Finally, all the results demonstrate that ILP-RMFSpGl+SA obtains similar performance when compared to J-ILP-RMFSpGlSA simultaneously requiring much lesser execution times.

Keywords: elastic optical networks; space division multiplexing; ILP; switching; resource allocation.

DOI: 10.1504/IJIPT.2022.122043

International Journal of Internet Protocol Technology, 2022 Vol.15 No.1, pp.29 - 40

Received: 18 Feb 2020
Accepted: 07 Oct 2020
Published online: 08 Apr 2022 *