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.
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 *