Journal ArticleDOI
Routing, Spectrum, and Core and/or Mode Assignment on Space-Division Multiplexing Optical Networks [Invited]
Hideki Tode,Yusuke Hirota +1 more
TLDR
This paper focuses on the routing, spectrum, and core and/or mode assignment (RSCMA) problem for future SDMEONs, and proposes SCMA methods with efficiency and flexibility awareness, exploiting prioritized area concept and crosstalk awareness depending on whether MCF or MMF supports intercore/intermode crosStalk.Abstract:
Elastic optical networks (EONs) are considered to be one of the promising future networks for spectrum flexibility. In conventional wavelength-division multiplexing networks, routing and wavelength assignment is one of the key issues, whereas the routing and spectrum assignment (RSA) problem considerably affects the network performance in EONs. In addition, the data-center traffic and mobile back-haul traffic keeps increasing. To deal with such increasing capacity of applications, space-division multiplexing (SDM) technologies such as multi-core fiber (MCF) and multi-mode fiber (MMF) have been intensively researched. From the network perspective, this paper focuses on the routing, spectrum, and core and/or mode assignment (RSCMA) problem for future SDM-EONs. Introducing MCF or MMF further complicates the RSA problem because the fiber core or mode dimension is newly expanded. In addition, physical impairment caused by MCF or MMF must be considered. In this paper, the target RSCMA problem is first divided into routing and SCMA problems, and a pre-computation method based on the K-shortest path is introduced as the routing solution. Next, we propose SCMA methods with efficiency and flexibility awareness, exploiting prioritized area concept and crosstalk awareness depending on whether MCF or MMF supports intercore/intermode crosstalk. Finally, the paper evaluates and compares the effectiveness of the proposed algorithms with that of representative algorithms.read more
Citations
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Journal ArticleDOI
Survey of resource allocation schemes and algorithms in spectrally-spatially flexible optical networking
TL;DR: This study overviews the state-of-the-art solutions in the scope of planning and operating SDM optical networks in a systematic way as well as to identify some open issues that lack solutions and need to be addressed.
Journal ArticleDOI
Routing, spectrum, and core assignment in SDM-EONS with MCF: node-arc ILP/MILP methods and an efficient XT-aware heuristic algorithm
TL;DR: This paper forms the RSCA problem using a nodearc- based integer linear programming (ILP) method in which the numbers of both variables and constraints are greatly reduced compared with previous ILP methods, thereby leading to a significant improvement in convergence efficiency.
Journal ArticleDOI
Core, Mode, and Spectrum Assignment Based on Machine Learning in Space Division Multiplexing Elastic Optical Networks
TL;DR: A crosstalk aware core, mode, and spectrum assignment (CA-CMSA) strategy is presented and simulation results show that the resource allocation algorithm based on LM can improve resource utilization without increasing total connection set-up time and be the best choice for the resource assignment in SDM networks with FM-MCFs.
Journal ArticleDOI
Dynamic routing in spectrally spatially flexible optical networks with back-to-back regeneration
TL;DR: A dynamic lightpath routing algorithm called adaptive routing with back-to-back regeneration (ARBR) is developed, which is evaluated in comparison to other reference methods and shows that the proposed algorithm outperforms the reference ones in terms of the BBP metric.
Journal ArticleDOI
Dynamic crosstalk-aware lightpath provisioning in spectrally-spatially flexible optical networks
TL;DR: Extensive simulation experiments performed in realistic network scenarios indicate that the utilized XT estimation methodology has a significant impact on network performance, with the precise XT approach favored over the worst-case XT strategy.
References
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Journal ArticleDOI
Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies
Masahiko Jinno,Hidehiko Takara,Bartlomiej Kozicki,Yukio Tsukishima,Yoshiaki Sone,Shinji Matsuoka +5 more
TL;DR: This article proposes a novel, spectrum- efficient, and scalable optical transport network architecture called SLICE, which enables sub-wavelength, superwa wavelength, and multiple-rate data traffic accommodation in a highly spectrum-efficient manner, thereby providing a fractional bandwidth service.
Journal ArticleDOI
Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network [Topics in Optical Communications]
Masahiko Jinno,Bartlomiej Kozicki,Hidehiko Takara,Atsushi Watanabe,Yoshiaki Sone,Takafumi Tanaka,Akira Hirano +6 more
TL;DR: A concept of a novel adaptation scheme in SLICE called distance-adaptive spectrum resource allocation, which can save more than 45 percent of required spectrum resources for a 12-node ring network, is presented.
Journal ArticleDOI
Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks
TL;DR: This work introduces the Routing, Modulation Level and Spectrum Allocation (RMLSA) problem, as opposed to the typical Routing and Wavelength Assignment (RWA) problem of traditional WDM networks, proves that it is also NP-complete and presents various algorithms to solve it.
Book ChapterDOI
Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks
TL;DR: This work introduces the Routing, Modulation Level and Spectrum Allocation (RMLSA) problem, as opposed to the typical Routing and Wavelength Assignment (RWA) problem of traditional WDM networks, proves that it is also NP-complete and presents various algorithms to solve it.
Journal ArticleDOI
Dynamic Service Provisioning in Elastic Optical Networks With Hybrid Single-/Multi-Path Routing
TL;DR: The simulation results have demonstrated that the proposed HSMR schemes can effectively reduce the bandwidth blocking probability (BBP) of dynamic RMSA, as compared to two benchmark algorithms that use single-path routing and split spectrum.