On combining Split Spectrum technique with a Slot-Continuity Capacity Loss heuristic in Elastic Optical Networks

Abstract

Elastic Optical Networks (EON) have been a constant focus of studies in recent years because they have characteristics that stand out in relation to current optical networks. Among these characteristics, it is possible to highlight the ability to transmit data with different bandwidths, adapted to the demand, which guarantees a high spectral efficiency. Different techniques and heuristics have been presented in order to solve the Routing and Spectrum Allocation (RSA) problem, which emphasize in providing efficient solutions for the packaging of requests within the optical spectrum. In this article, it is proposed the adaptation of an efficient spectrum assignment heuristic, referred to as Min Slot-Continuity Capacity Loss (MSCL), with the Split Spectrum technique. It is shown that by combining different forms of spectrum division with the spectrum assignment that generates the least loss of capacity, an efficient technique may be applied to EONs that provides better results than either the traditional algorithms of spectrum allocation (FF and MSCL) and the classic form of spectrum division.