Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/159234 |
Resumo: | Dynamic allocation and release of lightpaths cause spectral fragmentation and degrade the bandwidth occupation in elastic optical networks (EON). Spectral reallocation and defragmentation strategies are key issues to minimize this problem and should be carefully chosen to simplify network management and to avoid excessive use of hardware. In this paper, we investigate the application of three different routing and spectral assignment (RSA) algorithms to reallocate EON traffic in situations where new requested connections may be potentially blocked. A fragmentation index is computed for all EON links and only those lightpaths that encompass the most fragmented link are prone to reallocation. Computer simulations suggest the choice of an appropriate RSA may reduce the relative blocking probability by similar to 18% for a traffic load of 70 E. We also investigate the number of reallocations that actually lead to spectral defragmentation. |
id |
UNSP_c30ebf34085c5877159c8f7b41ec7b23 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/159234 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical NetworksDynamic allocation and release of lightpaths cause spectral fragmentation and degrade the bandwidth occupation in elastic optical networks (EON). Spectral reallocation and defragmentation strategies are key issues to minimize this problem and should be carefully chosen to simplify network management and to avoid excessive use of hardware. In this paper, we investigate the application of three different routing and spectral assignment (RSA) algorithms to reallocate EON traffic in situations where new requested connections may be potentially blocked. A fragmentation index is computed for all EON links and only those lightpaths that encompass the most fragmented link are prone to reallocation. Computer simulations suggest the choice of an appropriate RSA may reduce the relative blocking probability by similar to 18% for a traffic load of 70 E. We also investigate the number of reallocations that actually lead to spectral defragmentation.Pontificia Univ Catolica Campinas, Campinas, SP, BrazilUNIFEG, Guaxupe, MG, BrazilUniv Fed ABC, CECS, Santo Andre, SP, BrazilUniv Estadual Paulista, UNESP, Sao Joao Da Boa Vista, SP, BrazilUniv Estadual Paulista, UNESP, Sao Joao Da Boa Vista, SP, BrazilIeeePontificia Univ Catolica CampinasUNIFEGUniversidade Federal do ABC (UFABC)Universidade Estadual Paulista (Unesp)Favero, Ricardo VicenteBonani, Luiz HenriqueFrancisco Abbade, Marcelo Luis [UNESP]IEEE2018-11-26T15:37:33Z2018-11-26T15:37:33Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject42016 18th International Conference On Transparent Optical Networks (icton). New York: Ieee, 4 p., 2016.2162-7339http://hdl.handle.net/11449/159234WOS:000389537400401Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng2016 18th International Conference On Transparent Optical Networks (icton)info:eu-repo/semantics/openAccess2021-10-23T21:44:23Zoai:repositorio.unesp.br:11449/159234Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:50:58.059025Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
title |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
spellingShingle |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks Favero, Ricardo Vicente |
title_short |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
title_full |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
title_fullStr |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
title_full_unstemmed |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
title_sort |
Spectral Reallocation in Lightpaths Encompassing the Most Fragmented Link of Elastic Optical Networks |
author |
Favero, Ricardo Vicente |
author_facet |
Favero, Ricardo Vicente Bonani, Luiz Henrique Francisco Abbade, Marcelo Luis [UNESP] IEEE |
author_role |
author |
author2 |
Bonani, Luiz Henrique Francisco Abbade, Marcelo Luis [UNESP] IEEE |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Pontificia Univ Catolica Campinas UNIFEG Universidade Federal do ABC (UFABC) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Favero, Ricardo Vicente Bonani, Luiz Henrique Francisco Abbade, Marcelo Luis [UNESP] IEEE |
description |
Dynamic allocation and release of lightpaths cause spectral fragmentation and degrade the bandwidth occupation in elastic optical networks (EON). Spectral reallocation and defragmentation strategies are key issues to minimize this problem and should be carefully chosen to simplify network management and to avoid excessive use of hardware. In this paper, we investigate the application of three different routing and spectral assignment (RSA) algorithms to reallocate EON traffic in situations where new requested connections may be potentially blocked. A fragmentation index is computed for all EON links and only those lightpaths that encompass the most fragmented link are prone to reallocation. Computer simulations suggest the choice of an appropriate RSA may reduce the relative blocking probability by similar to 18% for a traffic load of 70 E. We also investigate the number of reallocations that actually lead to spectral defragmentation. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2018-11-26T15:37:33Z 2018-11-26T15:37:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
2016 18th International Conference On Transparent Optical Networks (icton). New York: Ieee, 4 p., 2016. 2162-7339 http://hdl.handle.net/11449/159234 WOS:000389537400401 |
identifier_str_mv |
2016 18th International Conference On Transparent Optical Networks (icton). New York: Ieee, 4 p., 2016. 2162-7339 WOS:000389537400401 |
url |
http://hdl.handle.net/11449/159234 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2016 18th International Conference On Transparent Optical Networks (icton) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4 |
dc.publisher.none.fl_str_mv |
Ieee |
publisher.none.fl_str_mv |
Ieee |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128991173804032 |