Heuristic planning algorithm for sharing restoration interfaces in OTN over DWDM networks

Xavier, A. V. S.; Silva, J.C.; Martins-Filho, Joaquim F.; Bastos-Filho, Carmelo J. A.; Chaves, Daniel A. R.; Almeida, Raul C.; Araújo, Danilo R. B.; Martins, José Augusto Legatheaux

doi:10.1016/j.yofte.2020.102426

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…The authors further extended their work by proposing a heuristic-based solution for OTN over DWDM network planning [ 47 ]. To that end, the authors developed two variations of their heuristic.…”

Section: Otn Optimization Backgroundmentioning

confidence: 99%

“…The first variant delivered a robust solution but did not guarantee that the minimum number of resources is used. The second variant simultaneously minimized the number of resources used and maximized the resilience by better reusing the available components [ 47 ]. Simulation results showed that the proposed heuristics closely matched those of the exhaustive-based solution for all traffic conditions in small network sizes.…”

Section: Otn Optimization Backgroundmentioning

confidence: 99%

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OTN-over-WDM optimization in 5G networks: key challenges and innovation opportunities

et al. 2023

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The continued growth of both mobile broadband and fixed broadband subscriptions as well as the added deployment of Internet of Things devices has led to making 5G networks a reality. More specifically, 5G networks are expected to support a diverse set of new applications/services in addition to existing applications/services from previous generations (2G/3G/4G). The COVID-19 pandemic has further increased the demand for such services which has resulted in a further surge in the Internet usage. Thus, 5G networks are expected to have a highly flexible architecture at all levels including at the radio, core, and transport levels. Optical Transport Networks (OTN) have been proposed as one potential and promising supporting technology for 5G networks at the transport level, particularly for next generation transport networks featuring large-granule broadband service transmissions. This is because it allows for more flexible, efficient, and dynamic networks. However, adopting and deploying OTNs in 5G networks comes with its own set of challenges including control, management, and orchestration of such networks as well as their security. Accordingly, this paper overviews 5G networks along with their requirements and provides a brief summary of OTNs and the corresponding optimization mechanisms. Additionally, this work discusses the challenges facing OTNs and their optimization within the context of 5G. Moreover, it outlines some of the key research areas and opportunities for innovation stemming from the data-driven intelligent networking paradigm using Machine Learning techniques.

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Section: Otn Optimization Backgroundmentioning

confidence: 99%

Section: Otn Optimization Backgroundmentioning

confidence: 99%

OTN-over-WDM optimization in 5G networks: key challenges and innovation opportunities

et al. 2023

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“…The following works have explored the topics of restoration and protection in multi-layered networks. Xavier et al [12] explore the use of a heuristic algorithm for sharing restoration interfaces in OTN-over-DWDM networks. Tan et al [13] consider the design of OTN-over-DWDM networks with multi-failure recovery, while considering both the electrical and optical domains.…”

Section: Related Workmentioning

confidence: 99%

Robust traffic grooming and infrastructure placement in OTN-over-DWDM networks

Manias¹,

Naoum-Sawaya²,

Shami³

et al. 2023

J. Opt. Commun. Netw.

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The advent of next-generation networks has revolutionized modern networking practices through its improved service capability as well as its numerous emerging use cases. Coupled with the increasing number of connected devices, 5G and beyond (5G+) network traffic is expected to be increasingly diverse and high in volume. To address the large amount of data exchanged between the 5G+ core and external data networks, optical transport networks (OTNs) with dense wavelength-division multiplexing (DWDM) will be leveraged. In order to prepare for this increase in traffic, network operators (NOs) must develop and expand their existing backbone networks, requiring significant levels of capital expenditures. To this end, the traffic grooming and infrastructure placement problem is critical to supporting NO decisions. The work presented in this paper considers the traffic grooming and infrastructure placement problem for OTN-over-DWDM networks. The dynamicity and diversity of 5G+ network traffic are addressed through the use of robust optimization, allowing for increasing levels of solution conservativeness to protect against various levels of demand uncertainty. Furthermore, a robust traffic grooming and infrastructure placement heuristic (RGIP-H) solution capable of addressing the scalability concerns of the optimization problem formulation is presented. The results presented in this work demonstrate how the tuning of the robust parameters affects the cost of the objective function. Additionally, the ability of the robust solution to protect the solution under demand uncertainty is highlighted when the robust and deterministic solutions are compared during parameter deviation trials. Finally, the performance of the RGIP-H is compared to the optimization models when applied to larger network sizes.

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“…Generally, the studied architectures with the lowest cost and good performance were presented. It can be observed in [33] [45], [62], [63], [68] that the authors aim, through the dimensioning of the network elements, to minimize the total capacity of nodes in different layers, thus reducing the overall cost of the network.…”

Section: Network Sizingmentioning

confidence: 99%

Systematic Review on Methods for OTN Network Planning

Silva

Souza

Ribeiro

et al. 2023

Preprint

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This paper presents a systematic review applying the PRISMA methodology with a Systematic Review Protocol (SRP) on the definitions of methods, techniques, and algorithms used for optical transport network (OTN) planning. OTN has been extensively used worldwide, and many issues still need to be studied. We conducted a comprehensive review of the relevant studies to provide insight into the recent progress and the research gaps in the field. According to the analyzed studies, research questions and open issues are associated with using Machine learning, Resilience, and Energy Consumption. These approaches are highlighted as future research directions to enable the development of OTN planning.

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Heuristic planning algorithm for sharing restoration interfaces in OTN over DWDM networks

Cited by 10 publications

References 11 publications

OTN-over-WDM optimization in 5G networks: key challenges and innovation opportunities

OTN-over-WDM optimization in 5G networks: key challenges and innovation opportunities

Robust traffic grooming and infrastructure placement in OTN-over-DWDM networks

Systematic Review on Methods for OTN Network Planning

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