Gradual Migration of Co-Existing Fixed/Flexible Optical Networks for Cloud-Fog Computing

Zhu, Ruijie; Li, Shihua; Wang, Peisen; Tan, Yuanlong; Yuan, Junling

doi:10.1109/access.2020.2979895

Cited by 24 publications

(12 citation statements)

References 27 publications

(35 reference statements)

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“…In the evolution of optical transport networks, flexible-grid EONs have been identified as the next major breakthrough [34]. Thus, a larger number of researchers have dedicated their time and effort to rectify any issues that may arise as the transition from fixed-grid WDM to EONs takes place [34]- [36]. They have discussed possible methods of mitigating the unbearable CAPEX while maintaining service stability.…”

Section: Related Workmentioning

confidence: 99%

Joint Minimization of Spectrum and Power in Impairment-Aware Elastic Optical Networks

et al. 2021

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Flexible-grid elastic optical networks (EONs) are widely considered as the future of next generation optical transport networks. Depleting spectral resources and increasing power consumption are two critical bottlenecks of EONs. In this paper, we propose a novel impairment-aware resource allocation scheme that jointly minimizes bandwidth waste and power consumption of EONs. The proposed scheme is presented in the form of an analytical optimization for small-sized networks. A low-complexity heuristic is then proposed for large networks. Numerical results show that by appropriately assigning the route, modulation format, and carrier frequency to each connection request, the proposed scheme significantly increases spectral efficiency and reduces power consumption in networks that handle varying traffic volumes.

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Section: Related Workmentioning

confidence: 99%

Joint Minimization of Spectrum and Power in Impairment-Aware Elastic Optical Networks

et al. 2021

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“…One course of action to overcome this problem is to manage the installed network infrastructure efficiently [4], [5]. Nowadays, signals are multiplexed and transmitted using different carrier frequencies/wavelengths within a preestablished grid (50 or 100 GHz separation per channel) [6].…”

Section: Introductionmentioning

confidence: 99%

BER-Adaptive RMLSA Algorithm for Wide-Area Flexible Optical Networks

et al. 2020

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Wide-area optical networks face significant transmission challenges due to the relentless growth of bandwidth demands experienced nowadays. Network operators must consider the relationship between modulation format and maximum reach for each connection request due to the accumulation of physical layer impairments in optical fiber links, to guarantee a minimum quality of service (QoS) and quality of transmission (QoT) to all connection requests. In this work, we present a BER-adaptive solution to solve the routing, modulation format, and spectrum assignment (RMLSA) problem for wide-area elastic optical networks. Our main goal is to maximize successful connection requests in wide-area networks while choosing modulation formats with the highest efficiency possible. Consequently, our technique uses an adaptive bit-error-rate (BER) threshold to achieve communication with the best QoT in the most efficient manner, using the strictest BER value and the modulation format with the smallest bandwidth possible. Additionally, the proposed algorithm relies on 3R regeneration devices to enable long-distances communications if transparent communication cannot be achieved. We assessed our method through simulations for various network conditions, such as the number of regenerators per node, traffic load per user, and BER threshold values. In a scenario without regenerators, the BER-Adaptive algorithm performs similarly to the most relaxed fixed BER threshold studied in blocking probability. However, it ensures a higher QoT to most of the connection requests. The proposed algorithm thrives with the use of regenerators, showing the best performance among the studied solutions, enabling long-distance communications with a high QoT and low blocking probability.

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“…The second strategy is to manage the already installed network infrastructure efficiently. Conse-quently, the second alternative has been an important focus of researchers [1], [6].…”

Section: Introductionmentioning

confidence: 99%

A Topology-Based Spectrum Assignment Solution for Static Elastic Optical Networks With Ring Topologies

2020

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Gradual Migration of Co-Existing Fixed/Flexible Optical Networks for Cloud-Fog Computing

Cited by 24 publications

References 27 publications

Joint Minimization of Spectrum and Power in Impairment-Aware Elastic Optical Networks

Joint Minimization of Spectrum and Power in Impairment-Aware Elastic Optical Networks

BER-Adaptive RMLSA Algorithm for Wide-Area Flexible Optical Networks

A Topology-Based Spectrum Assignment Solution for Static Elastic Optical Networks With Ring Topologies

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