Using SDN and Slicing for Data Offloading over Heterogeneous Networks Supporting non-3GPP Access

Meneses, Flavio; Silva, Rui; Santos, David; Corujo, Daniel; Aguiar, Rui L.

doi:10.1109/pimrc.2018.8580969

Cited by 8 publications

(5 citation statements)

References 16 publications

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“…In, 8 the authors propose a network slicing based mobility management model for UE mobility. Some of the research on UE mobility in slice based 5G networks 9,10 focuses on defining Software Defined Network (SDN) based architectures and illustrates handovers within those frameworks. In, 11 the authors propose the design of a flexible SDN/Network Function Virtualization (NFV) based 5G architecture with a focus on network slicing.…”

Section: Related Workmentioning

confidence: 99%

Enhanced UE slice availability and mobility through multi‐connectivity in 5G multi‐RAT networks

Manjeshwar

Jha

Karandikar

et al. 2020

Internet Technology Letters

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Fifth Generation (5G) mobile networks utilize network slicing for providing diverse services over a shared infrastructure. User Equipments (UEs) can access multiple slices concurrently to avail services requiring different Quality of Service (QoS). Third Generation Partnership Project (3GPP) 5G stipulates that all slices supported for a given UE should be deployed homogeneously over its Registration Area (RA) for ensuring slice availability during mobility. 3GPP also prescribes mechanisms such as multi‐connectivity for improving mobility robustness in heterogeneous networks. However, to the best of our knowledge, the role of multi‐connectivity in the context of network slicing has not been well‐explored. In this paper, we propose using multi‐connectivity for improving the availability of network slices.1

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Section: Related Workmentioning

confidence: 99%

Enhanced UE slice availability and mobility through multi‐connectivity in 5G multi‐RAT networks

Manjeshwar

Jha

Karandikar

et al. 2020

Internet Technology Letters

View full text Add to dashboard Cite

show abstract

“…With the purpose of facilitating the procedures flow, Figure presents the core networks of the three providers as single entity. In this context, the internal control signaling of each provider is out‐of‐scope of this work …”

Section: Architecture Overview Solutionmentioning

confidence: 99%

“…Nevertheless, despite efforts from MNOs to offload data to non‐3GPP networks, mechanisms fully supporting seamless handover over heterogeneous networks are still not widespread, specially when considering the elasticity proposed by network slicing. In this line, the virtualization of the UE's wireless context in the cloud (ie, vUE), while using OF for flow‐based handover have been previously proposed . These mechanisms allow operators and providers to realize enhanced mobility management procedures directly at the cloud, by taking advantage of the UE context existing therein.…”

Section: Introductionmentioning

confidence: 99%

Dynamic network slice resources reconfiguration in heterogeneous mobility environments

Meneses

Silva

Corujo

et al. 2019

Internet Technology Letters

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Funding informationFundação para a Ciência e a Tecnologia, PTDC/EEI-TEL/30685/2017, CENTRO-01-0145-FEDER-000010;Ministério da Educação e Ciência (MEC); European Union through the European Regional Development Fund (FEDER)This paper proposes a framework that optimizes network slicing provisioning in over-the-top (OTT) scenarios, by reducing occupied resources of slices from where the User Equipment (UE) handovers from. To achieve this, the framework leverages an existing Software Defined Networking (SDN)-based UE virtualization scheme, which allows to instantiate in the cloud a representation of the physical device and its current connectivity context. This scheme was extended with the ability to anchor the UE's datapath and mask the underlying slices in a single end-to-end slice, allowing handover mechanisms between slices to become transparent to involved endpoints.This framework was implemented and evaluated in an experimental testbed where the UE moves between Wi-Fi and long-term evolution (LTE) slices, with results showing that upstream and downstream throughput is dynamically adapted to the UE requirements prior to the handover. K E Y W O R D S handover, heterogeneous, mobile offloading, network slicing, NFV, OpenFlow, SDN 1 Internet Technology Letters. 2019;2:e107. wileyonlinelibrary.com/journal/itl2

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“…However, providing interoperation capabilities between both slices requires both the development of new mechanisms as well as the enhancement of existing procedures. In [32], the authors took the first steps towards this direction and developed a framework that dynamically instantiated a non-3GPP slice for the UE, allowing mobile video offloading while maintaining the QoE.…”

Section: Slicing Initiatives For Different Slice Dimensions and Immentioning

confidence: 99%

“…This allows the access technology currently in use by the UE to become transparent, enabling seamless handover scenarios. In this line, the use of a virtualized representation of the UE inside the network provider's virtualized network functions (as in [32]) anchors the UE to the network, allowing the network provider to flexibly move the slice among the different access technologies. Alternatively, the use of bond interfaces allows the unification of access technologies in the UE, which also allows the transparency of multiple slices to the end-user.…”

Section: Slicing Initiatives For Different Slice Dimensions and Immentioning

confidence: 99%

Micro and Macro Network Slicing: An Experimental Assessment of the Impact of Increasing Numbers of Slices

Meneses

Silva

Corujo

et al. 2019

Wireless Pers Commun

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The Fifth Generation (5G) telecommunications network aims not only to enhance traffic performance and allow efficient management, but also to enable it to dynamically and flexibly adapt to the traffic demands of different vertical scenarios. In order to support that enablement, the underlying network procedures (i.e., network functions) are being virtualized and deployed in cloud-based environments, allowing for a more optimized usage of the infrastructure resources. In addition, such resources can be sliced, allowing isolated provisioning to specific network functions allocated to disparate vertical deployments. As network slices are envisaged by network operators to fulfill a small number of slices, able to cater towards essential 5G scenario demands (i.e., enhanced mobile broadband, massive machine-type communications and ultra reliable low-latency communications), the total amount of slices existing in a system is currently dictated by the underlying operational overhead placed over the cloud infrastructure. This paper explores the challenges associated to a vision where the network slicing concept is applied with a much greater level of granularity, ultimately allowing it to become a core mechanism of the network's operation, with large numbers of co-existing slices. In that respect, this paper proposes an architecture framework for instantiation of network slices among network providers, which in turn are able to instantiate sub-slices tailored to use cases and vertical tenants. The evaluation of this concept is done following a two-pronged approach: firstly, different slice dimensions (i.e., from micro to macro) are proposed and discussed, pointing out the benefits and challenges of each proposed slice; secondly, we deployed a mobile network provider (MNO), using OpenAirInterface and FlexRAN frameworks, and experimentally evaluated the its slicing mechanisms. The objective is to provide insight on the challenges and impact associated with the deployment of an increasing amount of slices, using the same available infrastructural resources.

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Using SDN and Slicing for Data Offloading over Heterogeneous Networks Supporting non-3GPP Access

Cited by 8 publications

References 16 publications

Enhanced UE slice availability and mobility through multi‐connectivity in 5G multi‐RAT networks

Enhanced UE slice availability and mobility through multi‐connectivity in 5G multi‐RAT networks

Dynamic network slice resources reconfiguration in heterogeneous mobility environments

Micro and Macro Network Slicing: An Experimental Assessment of the Impact of Increasing Numbers of Slices

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