SDN and NFV Convergence a Technology Enabler for Abstracting and Virtualising Hardware and Control of Optical Networks (Invited)

Nejabati, Reza; Peng, Shuping; Channegowda, Mayur; Guo, Bingli; Simeonidou, Dimitra

doi:10.1364/ofc.2015.w4j.6

Cited by 11 publications

(6 citation statements)

References 3 publications

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“…There are many research papers available that investigate the integration of NFV in different traditional telecommunication networks. For example, the authors in [287], [288] investigate possible deployment of NFV in optical communication networks. Papers such as [289]- [291] study the deployment of NFV in different aspects of 5G mobile network.…”

Section: F Network Function Virtualizationmentioning

confidence: 99%

A Comprehensive Survey of RAN Architectures Toward 5G Mobile Communication System

et al. 2019

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The fifth generation (5G) of mobile communication system aims to deliver a ubiquitous mobile service with enhanced quality of service (QoS). It is also expected to enable new use-cases for various vertical industrial applications-such as automobiles, public transportation, medical care, energy, public safety, agriculture, entertainment, manufacturing, and so on. Rapid increases are predicted to occur in user density, traffic volume, and data rate. This calls for novel solutions to the requirements of both mobile users and vertical industries in the next decade. Among various available options, one that appears attractive is to redesign the network architecture-more specifically, to reconstruct the radio access network (RAN). In this paper, we present an inclusive and comprehensive survey on various RAN architectures toward 5G, namely cloud-RAN, heterogeneous cloud-RAN, virtualized cloud-RAN, and fog-RAN. We compare them from various perspectives, such as energy consumption, operations expenditure, resource allocation, spectrum efficiency, system architecture, and network performance. Moreover, we review the key enabling technologies for 5G systems, such as multi-access edge computing, network function virtualization, softwaredefined networking, and network slicing; and some crucial radio access technologies (RATs), such as millimeter wave, massive multi-input multi-output, device-to-device communication, and massive machinetype communication. Last but not least, we discuss the major research challenges in 5G RAN and 5G RATs and identify several possible directions of future research.

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Section: F Network Function Virtualizationmentioning

confidence: 99%

A Comprehensive Survey of RAN Architectures Toward 5G Mobile Communication System

et al. 2019

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“…The first category covers the previous efforts and studies that have been focusing on integrating NFV with other technologies such as Optical networks [24], [25], IoT [26], 5G [27], [28], [29], SDN [30], [31], [32], and Cloud computing [33]. All of these studies adopted a generic NFV reference framework which is not designed for any specific scenario.…”

Section: Related Workmentioning

confidence: 99%

Network Functions Virtualization: The Long Road to Commercial Deployments

2019

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Network operators are under pressure to offer efficient network-based services while keeping service deployment costs to a minimum. Network functions virtualization (NFV) can potentially revolutionize network-based services bringing low-deployment costs for network operators. The NFV has been introduced to ultimately extend the non-proprietary and open-standard-based model to network and service deployments, significant improvements to today's proprietary locked implementations. Notwithstanding the continuous efforts of both academia and industry to support the NFV paradigm, the current NFV solutions offered are still in its infancy. In this survey, we provide a detailed background of NFV to establish a comprehensive understanding of the subject, ranging from the basics to more advanced topics. Moreover, we offer a comprehensive overview of the NFV main concepts, standardization efforts, the benefits of NFV, and discussions of the NFV architecture as defined by the European telecommunications standardization institute (ETSI). Furthermore, we discuss the NFV applicability and current open source projects. We then highlight NFV requirements, design considerations, and developmental architectural impairments and barriers to commercial NFV deployments. Finally, we conclude enumerating future directions for NFV development.

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“…One of possible improvements of ETSI NFV-MANO is joining it with SDN-like management, see, e.g., [60,61]. The systems are compatible because they have planebased/layered structure and both assume centralized management.…”

Section: Management and Orchestrationmentioning

confidence: 99%

Towards constructive approach to end-to-end slice isolation in 5G networks

Kotulski

Nowak

Sepczuk

et al. 2018

EURASIP J. on Info. Security

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Although 5G (fifth generation) networks are still in the realm of ideas, their architecture can be considered as reaching a forming phase. There are several reports and white papers which attempt to precise 5G architectural requirements presenting them from different points of view, including techno-socio-economic impacts and technological constraints. Most of them deal with network slicing aspects as a central point, often strengthening slices with slice isolation. The idea of isolation in the network is not new. However, currently considered technologies give new capabilities that can bring added value in this field. The goal of this paper is to present and examine the isolation capabilities and selected approaches to its realization in network slicing context. As the 5G architecture is still evolving, the specification of isolated slices operation and management brings new requirements that need to be addressed, especially in a context of end-to-end (E2E) security. Thus, an outline of recent trends in slice isolation and a set of challenges are presented. The challenges, if properly addressed, could be a step from the concept of 5G networks to proof-of-concept solutions which provide E2E user's security based on slices isolation. Among other things, the key features are proper slice design and establishment, security at interfaces, suitable access protocols, correct virtual resources sharing, and an adaptable management and orchestration architecture (MANO). In conclusion of the paper, short outlines of two of the main secure isolation challenges are given: a proper definition of isolation parameters and designing suitable MANO system. which is close to end users and ensuring an end-toend security services chain realized by virtualized open access physical layer security (PLS). These novel crosslayer approaches to security address such areas as: data confidentiality, data integrity, provider's resources isolation, and authentication and authorization. The security aspects of 5G networks are discussed in 5G-ENSURE project [3]. Main goals of the initiative focus on developing non-intrusive security and privacy mechanisms, which will ensure the following: AAA services, privacy, trust, network management and monitoring, and virtualization isolation for the core 5G architecture. Within the project, the 5G security testbed with proposed security components was demonstrated. The 5G NORMA (Novel Radio Multi-service adaptive network Architecture) [4] project has the key objective to develop a novel, adaptive, and future-oriented 5G mobile network architecture. The created architecture should provide network customizability and, at the same time, ensure meeting requirements associated with rigorous performance, energy saving, cost

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SDN and NFV Convergence a Technology Enabler for Abstracting and Virtualising Hardware and Control of Optical Networks (Invited)

Cited by 11 publications

References 3 publications

A Comprehensive Survey of RAN Architectures Toward 5G Mobile Communication System

A Comprehensive Survey of RAN Architectures Toward 5G Mobile Communication System

Network Functions Virtualization: The Long Road to Commercial Deployments

Towards constructive approach to end-to-end slice isolation in 5G networks

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