Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks
A fragmentation-avoiding spectrum assignment strategy based on spectrum partition is proposed, which is used to resolve the spectrum fragmentation problem in elastic optical networks. For alleviating spectrum fragmentation, a spectrum partition policy, splitting the whole optical spectrum into sever...
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| Format: | Article |
| Language: | English |
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IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8014430/ |
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| author | Huan-Lin Liu Lei Lv Yong Chen Chengying Wei |
| author_facet | Huan-Lin Liu Lei Lv Yong Chen Chengying Wei |
| author_sort | Huan-Lin Liu |
| collection | DOAJ |
| description | A fragmentation-avoiding spectrum assignment strategy based on spectrum partition is proposed, which is used to resolve the spectrum fragmentation problem in elastic optical networks. For alleviating spectrum fragmentation, a spectrum partition policy, splitting the whole optical spectrum into several dedicated partitions, is presented. Based on this, a joint first-last-fit spectrum assignment policy is presented to enhance the probability of successful transmission of request and spectrum efficiency, where each partition is first used to transmit requests with the same rate in the first-fit policy; and other partitions are used to search available spectrum resources in the last-fit policy when there are no available spectrum resources in the dedicated partition. Meanwhile, a partition selection formula is designed to minimize the interference of spectrum resources during the last-fit spectrum assignment. Moreover, a reconfiguration mechanism, moving requests that are not transmitted in their dedicated partition to their dedicated partition, is also studied. The simulation results indicate that the proposed algorithm can reduce the bandwidth blocking probability and improve spectrum efficiency. |
| format | Article |
| id | doaj-art-dbdcea5eba5e405ba51b05a5c72ca1aa |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-dbdcea5eba5e405ba51b05a5c72ca1aa2025-07-01T23:32:41ZengIEEEIEEE Photonics Journal1943-06552017-01-019511310.1109/JPHOT.2017.27397508014430Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical NetworksHuan-Lin Liu0Lei Lv1Yong Chen2Chengying Wei3Key Laboratory of Optical Fiber Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaKey Laboratory of Optical Fiber Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaKey Laboratory of Industrial Internet of Things & Network Control, MOE, Chongqing University of Posts and Telecommunications, Chongqing, ChinaKey Laboratory of Optical Fiber Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, ChinaA fragmentation-avoiding spectrum assignment strategy based on spectrum partition is proposed, which is used to resolve the spectrum fragmentation problem in elastic optical networks. For alleviating spectrum fragmentation, a spectrum partition policy, splitting the whole optical spectrum into several dedicated partitions, is presented. Based on this, a joint first-last-fit spectrum assignment policy is presented to enhance the probability of successful transmission of request and spectrum efficiency, where each partition is first used to transmit requests with the same rate in the first-fit policy; and other partitions are used to search available spectrum resources in the last-fit policy when there are no available spectrum resources in the dedicated partition. Meanwhile, a partition selection formula is designed to minimize the interference of spectrum resources during the last-fit spectrum assignment. Moreover, a reconfiguration mechanism, moving requests that are not transmitted in their dedicated partition to their dedicated partition, is also studied. The simulation results indicate that the proposed algorithm can reduce the bandwidth blocking probability and improve spectrum efficiency.https://ieeexplore.ieee.org/document/8014430/Elastic optical networksfragmentation avoidancespectrum partitionfirst-last-fitreconfiguration. |
| spellingShingle | Huan-Lin Liu Lei Lv Yong Chen Chengying Wei Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks IEEE Photonics Journal Elastic optical networks fragmentation avoidance spectrum partition first-last-fit reconfiguration. |
| title | Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks |
| title_full | Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks |
| title_fullStr | Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks |
| title_full_unstemmed | Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks |
| title_short | Fragmentation-Avoiding Spectrum Assignment Strategy Based on Spectrum Partition for Elastic Optical Networks |
| title_sort | fragmentation avoiding spectrum assignment strategy based on spectrum partition for elastic optical networks |
| topic | Elastic optical networks fragmentation avoidance spectrum partition first-last-fit reconfiguration. |
| url | https://ieeexplore.ieee.org/document/8014430/ |
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