Open AccessSpectrum allocation based on spectrum integration and re‐routing for elastic optical networks
Author(s) -
Liu Huanlin,
Zhou Bangtao,
Chen Yong
Publication year - 2016
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2015.0136
Subject(s) - frequency allocation , computer science , blocking (statistics) , bandwidth (computing) , energy consumption , routing (electronic design automation) , bandwidth allocation , spectrum (functional analysis) , path (computing) , mathematical optimization , algorithm , computer network , mathematics , engineering , physics , quantum mechanics , electrical engineering
For improving energy efficiency and spectrum utilisation for elastic optical networks, an energy‐efficient resources allocation algorithm based on spectrum‐aware is put forward. In the proposed algorithm, a spectrum allocation algorithm based on spectrum integration is introduced first. The algorithm reduces spectrum fragmentation by taking the spectrum slots usage of neighbour links into account, which makes the subsequent arriving requests have more chance to be successfully transmitted on the paths with minimal power consumption. Moreover, a path re‐routing mechanism, moving the requests which are not transmitted on their minimal power consumption paths to their minimal power consumption paths, is studied in the proposed algorithm. The simulation results show that the proposed algorithm not only improves energy efficiency, but also reduces the bandwidth blocking rate.