Network Slicing for 5G: Challenges and Opportunities

Li, Xin; Samaka, Mohammed; Chan, H. Anthony; Bhamare, Deval; Gupta, Lav; Guo, Chengcheng; Jain, Raj

doi:10.1109/mic.2017.3481355

Cited by 261 publications

(133 citation statements)

References 5 publications

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“…The authors in the article [80] list challenges and opportunities resulting from creating network slicing in 5G. Firstly, the paper describes concept of slicing: features, properties, and components.…”

Section: Concerned Issues In 5g Networkmentioning

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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Section: Concerned Issues In 5g Networkmentioning

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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“…The global provisioning problem has to account for storage and computing constraints, as well as coverage constraints. It leads to the minimization of the sum of the costs (24) and (8)…”

Section: Single-step Vs Two-step Provisioningmentioning

confidence: 99%

Aggregated Resource Provisioning for Network Slices

Luu

Kieffer

Mouradian

et al. 2018

2018 IEEE Global Communications Conference (GLOBECOM)

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Network slicing appears as a key enabler for the future 5G networks. Mobile Network Operators create various slices for Service Providers (SP) to accommodate customized services. As network slices are operated on a common network infrastructure owned by some Infrastructure Provider (InP), sharing the resources across a set of network slices is important for future deployment. Moreover, in many situations, slices have to be deployed over some geographical area: coverage as well as minimum per-user rate constraints have then to be taken into account.Usually, the various Service Function Chains (SFCs) belonging to a slice are deployed on a best-effort basis. Nothing ensures that the InP will be able to allocate enough resources to cope with the increasing demands of some SP. This paper takes the InP perspective and proposes a slice resource provisioning approach to cope with multiple slice demands in terms of computing, storage, coverage, and rate constraints.The resource requirements of the various Service Function Chains to be deployed within a slice are aggregated within a graph of Slice Resource Demands (SRD). Coverage and rate constraints are also taken into account in the SRD. Infrastructure nodes and links have then to be provisioned so as to satisfy all types of resource demands. This problem leads to a Mixed Integer Linear Programming formulation. A two-step deployment approach is considered, with several variants, depending on whether the constraints of each slide to be deployed are taken into account sequentially or jointly. Once provisioning has been performed, any slice deployment strategy may be considered on the reduced-size infrastructure graph representing the nodes and links on which resources have been provisioned.Simulation results demonstrate the effectiveness of the proposed approach compared to a more classical direct slice embedding approach.

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“…With the mature techniques for radio access, fronthaul, and backhaul networks available, the evolving 5G architecture needs to focus on developing solutions for managing disaggregation and cloudification of network functions and guarantee the security of end-to-end 5G network services [1], [2]. Managing disaggregation and cloudification at large scale is fundamental to future 5G service-offering, as it enables new types of 5G services including cross-domain network slicing and advanced neutral hosting scenarios, therefore delivering the real value promised by 5G [3] [4]. In this paper, we orchestrate services over multiple network domains with heterogeneous network devices and cloud infrastructure to deploy end-to-end services [5].…”

Section: Introductionmentioning

confidence: 99%

End-to-End Quantum Secured Inter-Domain 5G Service Orchestration Over Dynamically Switched Flex-Grid Optical Networks Enabled by a q-ROADM

Wang

Kanellos

et al. 2020

J. Lightwave Technol.

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Dynamic and flexible optical networking combined with virtualization and softwarisation enabled by Network Function Virtualization (NFV) and Software Defined Networking (SDN) are the key technology enablers for supporting the dynamicity, bandwidth and latency requirements of emerging 5G network services. To achieve the end-to-end connectivity objective of 5G, Network Services (NSes) must be often deployed transparently over multiple administrative and technological domains. Such scenario often presents security risks since a typical NS 1 may comprise a chain of network functions, each executed in different remote locations, and tampering within the network infrastructure may compromise their communication.To avoid such threats, Quantum Key Distribution (QKD) has been identified and proposed as a future-proof method immune to any algorithmic cryptanalysis based on fundamental quantumphysics mechanisms to distribute symmetric keys. The maturity of QKD has enabled the research and development of quantum networks with gradual coexistence with classical optical networks using carrier-grade telecom equipment. This makes the QKD technology a suitable candidate for security of distributed and virtualised network services.In this paper, for the first time, we propose a dynamic quantum-secured optical network for supporting network services that are dynamically created by chaining Virtual Network Functions (VNFs 2 ) over multiple network domains. This work includes a new flex-grid quantum-switched Reconfigurable Optical Add Drop Multiplexer (q-ROADM), extensions to SDN-enabled optical control plane, and extensions to NFV orchestration to achieve quantum-aware, on-demand chaining of VNFs. The experimental results verify the capability of routing quantum and classical data channels both individually and dynamically over shared fibre links. Moreover, quantum secured chaining of VNFs in 5G networks is experimentally demonstrated via interconnecting four autonomous 5G islands simultaneously through the q-ROADM with eight optical channels using the 5GUK Exchange orchestration platform. The experimental scenarios and results confirm the benefit of the proposed data plane architecture and control/management plane framework.Index Terms-5G, management and network orchestration, network function virtualization, quantum key distribution, secure network service, q-ROADM.

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Network Slicing for 5G: Challenges and Opportunities

Cited by 261 publications

References 5 publications

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

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

Aggregated Resource Provisioning for Network Slices

End-to-End Quantum Secured Inter-Domain 5G Service Orchestration Over Dynamically Switched Flex-Grid Optical Networks Enabled by a q-ROADM

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