{"title":"A precise partition strategy for proactive fragmentation avoidance in SDM-EONs with crosstalk awareness","authors":"","doi":"10.1007/s11107-024-01013-8","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Nowadays, space-division-multiplexing elastic optical networks (SDM-EONs) have become a promising technology for the next generation of backbone networks. Routing, spectrum and core assignment (RSCA) problem is one of the key issues in SDM-EONs. However, spectrum fragmentation and inter-core crosstalk are two main disadvantages which would impact performance of RSCA algorithm. In this paper, we investigate proactive fragmentation avoidance method in SDM-EONs with crosstalk awareness. We first propose a precise partition strategy to preassign spectrum resources to different types of services and introduce a crosstalk awareness method to effectively and conveniently measure crosstalk suffered by frequency slices; then we design a precise-partition-based spectrum assignment algorithm to allocate spectrum resources to connection requests under both crosstalk-ignoring and -considering cases. Simulation results show that the proposed algorithm outperforms the existing proactive fragmentation avoidance algorithms in terms of blocking probability.</p>","PeriodicalId":20057,"journal":{"name":"Photonic Network Communications","volume":"74 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photonic Network Communications","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1007/s11107-024-01013-8","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
Nowadays, space-division-multiplexing elastic optical networks (SDM-EONs) have become a promising technology for the next generation of backbone networks. Routing, spectrum and core assignment (RSCA) problem is one of the key issues in SDM-EONs. However, spectrum fragmentation and inter-core crosstalk are two main disadvantages which would impact performance of RSCA algorithm. In this paper, we investigate proactive fragmentation avoidance method in SDM-EONs with crosstalk awareness. We first propose a precise partition strategy to preassign spectrum resources to different types of services and introduce a crosstalk awareness method to effectively and conveniently measure crosstalk suffered by frequency slices; then we design a precise-partition-based spectrum assignment algorithm to allocate spectrum resources to connection requests under both crosstalk-ignoring and -considering cases. Simulation results show that the proposed algorithm outperforms the existing proactive fragmentation avoidance algorithms in terms of blocking probability.
期刊介绍：
This journal publishes papers involving optical communication networks. Coverage includes network and system technologies; network and system architectures; network access and control; network design, planning, and operation; interworking; and application design for an optical infrastructure
This journal publishes high-quality, peer-reviewed papers presenting research results, major achievements, and trends involving all aspects of optical network communications.
Among the topics explored are transport, access, and customer premises networks; local, regional, and global networks; transoceanic and undersea networks; optical transparent networks; WDM, HWDM, and OTDM networks and more.
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