Itinerant Routing in Elastic Optical Networks

Szcześniak, Ireneusz; Gola, A.; Jajszczyk, Andrzej; Pach, Andrzej R.; Woźna-Szcześniak, Bożena

doi:10.1109/jlt.2017.2674182

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…In this section, a comparative performance evaluation of the proposed KCAP, and the benchmark KSP-WC-XT and KSP-WC-XT-CP schemes has been done. To perform a comprehensive assessment of the proposed KCAP on network topologies of different size and connectivity, we generate random network topologies based on Gabriel graph (GG) [14] instead of few standard network topologies. In this approach, a number of nodes are randomly located in a given geographical area following uniform distribution, and then the nodes are connected through fiber links using GG theory.…”

Section: Performance Evaluationmentioning

confidence: 99%

Core Arrangement Based Spectrum-Efficient Path Selection in Core-Continuity Constrained SS-FONs

Agrawal¹,

Bhatia²,

Prakash³

2020

Optical Network Design and Modeling

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In this work, we exploit the spatial dimension of spectrally-spatially flexible optical networks (SS-FONs) to perform path selection. The existing path selection schemes in SS-FONs predominantly use k-shortest paths (KSP) method. However, in this work, we demonstrate that in SS-FONs, consideration of core selection along with link selection between source and destination nodes can significantly increase the spectrum utilization efficiency. We propose a k-core arrangement based paths (KCAP) scheme that performs path calculation and prioritization on the basis of core arrangement in different multicore fiber (MCF) structures, threshold crosstalk (XT) values, distance adaptive modulation (DAM), and the number of MCF links. The proposed KCAP achieves better spectrum utilization than the existing XT-aware and predefined core-prioritization schemes.

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Section: Performance Evaluationmentioning

confidence: 99%

Core Arrangement Based Spectrum-Efficient Path Selection in Core-Continuity Constrained SS-FONs

Agrawal¹,

Bhatia²,

Prakash³

2020

Optical Network Design and Modeling

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“…To design the physical network topology in the given geographical region, we generate random Gabriel graphs (GGs) [19,20], modified by Matérn hard core point process (MHCPP) [17]. In the literature [19,20], random GGs have been generated to design the network topologies, where a fixed number of nodes are located with uniform spatial distribution in a given geographical area. However, using uniform spatial distribution, it is possible that two or more nodes may get placed in the same location, which is impractical.…”

Section: Proposed Stochastic Failure and Optical Network Topology (Sf...mentioning

confidence: 99%

Topology and Failure Modeling for Optical Network Resilience Analysis Against Earthquakes

Agrawal¹,

Bhatia²,

Prakash³

2020

Optical Network Design and Modeling

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In this paper, we propose a stochastic failure and optical network topology (SFONT) model that can be used to comprehensively analyze the resilience of optical networks against a large number of possible earthquakes. We study an optical network densification problem, where dense network topologies are generated using the proposed SFONT model. Further, a seismic-risk aware optical network densification (SRA-OND) scheme is proposed with a view to design the future optical networks robust against earthquakes. The proposed SFONT model has been evaluated at various stages of network densification. To validate the capability of the proposed SFONT model to emulate real-world networking and failure scenario, we also perform a similar analysis based on RailTel optical network topology, seismic hazard maps, and real past earthquake data from India. Simulations indicate that the proposed SFONT model can be used to estimate and analyze the impact of network-resilience schemes on optical networks for a large number of possible earthquakes.

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“…In recent years, to find a solution that can improve network transmission capacity and spectrum utilization in optical backbone networks, the elastic optical networks based on orthogonal frequency division multiplexing (OFDM) has emerged [11]. The entity of resource allocation changes from wavelength to spectrum, and the allocation strategy of resource management and regulation problems becomes complicated [12,13].…”

Section: Related Workmentioning

confidence: 99%

A Novel Resource Allocation and Spectrum Defragmentation Mechanism for IoT-Based Big Data in Smart Cities

Peng

Wang

Tan

et al. 2019

Sensors

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People’s demand for high-traffic applications and the need for Internet of Things (IoT) are enormous in smart cities. The amount of data generated by virtual reality, high-definition video, and other IoT applications is growing at an exponential rate that far exceeds our expectations, and the types of data are becoming more diverse. It has become critical to reliably accommodate IoT-based big data with reasonable resource allocation in optical backbone networks for smart cities. For the problem of reliable transmission and efficient resource allocation in optical backbone networks, a novel resource allocation and spectrum defragmentation mechanism for massive IoT traffic is presented in this paper. Firstly, a routing and spectrum allocation algorithm based on the distance-adaptive sharing protection mechanism (DASP) is proposed, to obtain sufficient protection and reduce the spectrum consumption. The DASP algorithm advocates applying different strategies to the resource allocation of the working and protection paths. Then, the protection path spectrum defragmentation algorithm based on OpenFlow is designed to improve spectrum utilization while providing shared protection for traffic demands. The lowest starting slot-index first (LSSF) algorithm is employed to remove and reconstruct the optical paths. Numerical results indicate that the proposal can effectively alleviate spectrum fragmentation and reduce the bandwidth-blocking probability by 44.68% compared with the traditional scheme.

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Itinerant Routing in Elastic Optical Networks

Cited by 8 publications

References 20 publications

Core Arrangement Based Spectrum-Efficient Path Selection in Core-Continuity Constrained SS-FONs

Core Arrangement Based Spectrum-Efficient Path Selection in Core-Continuity Constrained SS-FONs

Topology and Failure Modeling for Optical Network Resilience Analysis Against Earthquakes

A Novel Resource Allocation and Spectrum Defragmentation Mechanism for IoT-Based Big Data in Smart Cities

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