Feeder fiber and OLT protection for ring-and-spur long-reach passive optical network

Abbas, Huda Saleh; Gregory, Mark A

doi:10.1109/atnac.2013.6705358

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…In the past, the most common topologies were tree and chain topologies (Figure 1). Recently, the ring topology, Ring-andspur, has been proposed for distances greater than 100 km in access networks [88], whereas the tree-andbranch topology, previously considered a more inefficient topology because it requires many amplifiers and splitters, today, it can be thought of as a new way to take advantage of the greatest amount of available optical channels, since EON technology has led to reducing the spacing of the optical spectrum grid. These topologies are an important decision when choosing which network architecture to adopt.…”

Section: Metropolitan Optical Network (Mon) Topologiesmentioning

confidence: 99%

Metropolitan Optical Networks: A Survey on New Architectures and Future Trends

Sousa¹,

Drummond²

2022

Preprint

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Metropolitan optical networks are undergoing major transformations to continue being able to provide services that meet the requirements of the applications of the future. The arrival of the 5G will expand the possibilities for offering IoT applications, autonomous vehicles, and smart cities services while imposing strong pressure on the physical infrastructure currently implemented, as well as on static traffic engineering techniques that do not respond in an agile way to the dynamic and heterogeneous nature of the upcoming traffic patterns. In order to guarantee the strictest quality of service and quality of experience requirements for users, as well as meeting the providers' objectives of maintaining an acceptable trade-off between cost and performance, new architectures for metropolitan optical networks have been proposed in the literature, with a growing interest starting from 2017. However, due to the proliferation of a dozen of new architectures in recent years, many questions need to be investigated regarding the planning, implementation, and management of these architectures, before they could be considered for practical application. This work presents a comprehensive survey of the new proposed architectures for metropolitan optical networks. Firstly, the main data transmission systems, equipment involved, and the structural organization of the new metro ecosystems are discussed. The already established and the novel architectures are presented, highlighting its characteristics and application, and comparative analysis among these architectures is carried out identifying the future technological trends. Finally, outstanding research questions are drawn to help direct future research on the field. Among the conclusions of this survey, the application of flexible spectrum allocation technologies seems to be the right, and necessary, evolution path for metropolitan optical network architectures.

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Section: Metropolitan Optical Network (Mon) Topologiesmentioning

confidence: 99%

Metropolitan Optical Networks: A Survey on New Architectures and Future Trends

Sousa¹,

Drummond²

2022

Preprint

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Modeling equipment hierarchy and costs for ICT solutions

Spruytte

Wee

Verbrugge

et al. 2019

Trans Emerging Tel Tech

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In the early 2000s, a large number of companies thrived mainly due to the fast‐paced evolution of network and Internet technologies. A similar trend is now emerging with the rise of the Internet of Things (IoT), using which almost every thing can be part of the Internet. Both groups of companies have important ICT networks as their core assets. In order to validate the feasibility of the business models of such companies, the relevant costs and revenues should be modeled. This publication focuses on the relevant costs, which can be divided into two categories: process costs and equipment costs, the latter being the focus here. For equipment costs, no formal standard exists. As a result, most studies make use of use case‐specific ad hoc models (typically, a combination of visualization and spreadsheet modeling), which tend to be error‐prone as well as hard to understand and reuse. To solve these issues, we developed the Equipment Coupling Modeling Notation (ECMN), which allows for both visualization and calculation while focusing on simplicity, flexibility, and reusability. ECMN is a flowchart‐like notation based on a small number of building blocks, which allows for hierarchical modeling by means of nesting models (using submodels). In this study, ECMN was applied to an IoT use case to show its strengths, based on which a comparison was made with various ad hoc models using a set of requirements.

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