Title: Research on improved modulation routing and spectrum allocation algorithm in elastic optical networks

Authors: Li Li; Ya-fang Zhai; Hong-jie Li

Addresses: Department of Electronic Information and Electrical Engineering, Anyang Institute of Technology, 455000,China; School of Telecommunications Engineering, Xidian University, 710000, China ' Department of Electronic Information and Electrical Engineering, Anyang Institute of Technology, 455000, China ' Department of Electronic Information and Electrical Engineering, Anyang Institute of Technology, 455000, China

Abstract: A routing modulation and spectrum allocation (RMSA) algorithm for elastic optical networks with a tradeoff between consumed resources and interval with boundary (Tradeoff-RnI) was proposed. For a connection, the amount of resources consumed (R) and the interval between the spectrum blocks and the boundary (I) are indicators that need to be minimised. For these two indicators, a new multi-objective optimisation model has been established. And then a linear combination αR+ (1 − α) I of R and I is designed. The target RMSA algorithm takes a compromise between R and I. The simulation results show that the Tradeoff-RnI algorithm has a much lower connection request blocking rate than the first-last fit algorithm and the block-assignment algorithm.

Keywords: elastic optical network; EON; routing; spectrum allocation; improved; Tradeoff-RnI algorithm; blocking probability.

DOI: 10.1504/IJICT.2020.108607

International Journal of Information and Communication Technology, 2020 Vol.17 No.1, pp.53 - 64

Received: 18 Apr 2019
Accepted: 25 Jun 2019

Published online: 07 Jul 2020 *

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