Multi-tenancy for Virtualized Network Functions

Medhat, Ahmed M.; Carella, Giuseppe; Mwangama, Joyce; Ventura, Neco

doi:10.1109/netsoft.2015.7116177

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…The network infrastructure sharing has now changed when the mobile network moves into the software-based platforms driven by SDN and NFV technologies. Indeed, implementing the mobile network functions as software brings up the notion of multi-tenancy in which multiple VNFs can be configured on the same NFV infrastructure [113] and each MVNO can be a tenant owning an isolated set of interconnected VNFs. Recently, the network sharing paradigm has evolved into a "network slicing" [20], [22], where the network infrastructure is shared to support particular communication services not only phone-to-phone communications but other emerging communication services such as autonomous cars, massive IoT, etc.…”

Section: E Network Sharing and Slicingmentioning

confidence: 99%

“…Through the survey classification section, many of the proposed designs have not been evaluated in sufficient detail. Some have very simple modeling analysis of signaling evaluations such as Chourasia and Sivalingam [85], Sama et al [97], Nguyen and Kim [98], [99], and Hasegawa and Murata [134] while several proposals have run some simple experiments on a license-based platform called OpenEPC [139], such as Mueller et al [103], Medhat et al [113], Fontenla-González et al [212]. We realize that the root of the problem is the shortage of benchmarking tools.…”

Section: F Network Performance Evaluation and Benchmarksmentioning

confidence: 99%

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SDN/NFV-Based Mobile Packet Core Network Architectures: A Survey

Nguyen

Brunström

Grinnemo

et al. 2017

IEEE Commun. Surv. Tutorials

280

155

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The emergence of two new technologies, namely, software defined networking (SDN) and network function virtualization (NFV), have radically changed the development of network functions and the evolution of network architectures. These two technologies bring to mobile operators the promises of reducing costs, enhancing network flexibility and scalability, and shortening the time-to-market of new applications and services. With the advent of SDN and NFV and their offered benefits, the mobile operators are gradually changing the way how they architect their mobile networks to cope with ever-increasing growth of data traffic, massive number of new devices and network accesses, and to pave the way toward the upcoming fifth generation networking. This survey aims at providing a comprehensive survey of state-of-the-art research work, which leverages SDN and NFV into the most recent mobile packet core network architecture, evolved packet core. The research work is categorized into smaller groups according to a proposed four-dimensional taxonomy reflecting the: 1) architectural approach, 2) technology adoption, 3) functional implementation, and 4) deployment strategy. Thereafter, the research work is exhaustively compared based on the proposed taxonomy and some added attributes and criteria. Finally, this survey identifies and discusses some major challenges and open issues, such as scalability and reliability, optimal resource scheduling and allocation, management and orchestration, and network sharing and slicing that raise from the taxonomy and comparison tables that need to be further investigated and explored.

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Section: E Network Sharing and Slicingmentioning

confidence: 99%

Section: F Network Performance Evaluation and Benchmarksmentioning

confidence: 99%

SDN/NFV-Based Mobile Packet Core Network Architectures: A Survey

Nguyen

Brunström

Grinnemo

et al. 2017

IEEE Commun. Surv. Tutorials

280

155

View full text Add to dashboard Cite

show abstract

“…7 Ericsson evolved packet gateway. http://goo.gl/tEjcWP • Use of proprietary black boxes [3] • Use of inflexible hard-state signalling protocols [49] • Use of monolithic functionalities [3] • Reconfiguration/updates available only with heavy integration within network operators [50] • Updates require replacements of existing equipment even if it is still sufficient for most purposes [50] • High CAPEX to extend the network (i.e., increasing coverage) [50], [59], [60], [61] • High CAPEX to introduce novel services [50], [59], [60], [61] • High OPEX for network management [50], [59], [60], [61] Complexity • Network entities involved in both U/C-planes [51], [52] • Use of GTP tunnels [54], [17] • Offering a converged service view [4] • Centralized U-plane (issues at the SGW and PGW) [53], [49] • Centralized C-plane (issues at the MME) [55] • High number of information related to UEs (charging, QoS, etc.) [47] • Delay susceptible of the overload at the MME, SGW and PGW [53], [49], [55] • Reduction of the overall capacity (in terms of resources to be used for data traffic) of the network [62] • High CAPEX/OPEX to scale the network [17] Centralised U/C-planes • U-plane unaware of session profiles and characteristics [47] • C-plane signalling is growing 50% faster than data traffic [55] • U-plane connectivity may involve a waste of network resources even if UEs do not have data to send [62] • Reduction of the overall capacity (in terms of resources to be used for data traffic) of the network...…”

Section: ) Inflexibilitymentioning

confidence: 99%

Softwarization and virtualization in 5G mobile networks: Benefits, trends and challenges

Condoluci

Mahmoodi

2018

Computer Networks

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The promise behind the effective deployment of 5G networks is an architecture able to provide flexibility, reconfigurability and programmability in order to support, with fine granularity, a wide and heterogeneous set of 5G use cases. This dictates a radical change in the design of mobile systems which, being usually based on the use of static deployment of vendor equipment characterized by monolithic functionality deployed at specific network locations, fail in providing the above mentioned features. By decoupling network functionalities from the underlying hardware, softwarization and virtualization are two disruptive paradigms considered to be at the basis of the design process of 5G networks. This paper analyses and summarizes the role of these two paradigms in enhancing the network architecture and functionalities of mobile systems. With this aim, we analyze several 5G application scenarios in order to derive and classify the requirements to be taken into account in the design process of 5G network.We provide an overview on the recent advances by standardization bodies in considering the role of softwarization and virtualization in the next-to-come mobile systems. We also survey the proposals in literature by underlining the recent proposals exploiting softwarization and virtualization for the network design and functionality implementation of 5G networks. Finally, we conclude the paper by suggesting a set of research challenges to be investigated.

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“…When considering 4G services, most of the studies that focus on the mobile core network include the virtualization of Evolved Packet Core (EPC), such as: Serving Gateway (SGW) [23,24,[71][72][73][74][75][76][77], Packet Data Network Gateway (PGW) [23,24,[71][72][73][74][75][76][77][78], Mobility Management Entity (MME) [23,24,[73][74][75][76], Home Subscriber Server (HSS) [23,74,76], and Policy and Charging Rules Function (PCRF) [74,76].…”

Section: 61mentioning

confidence: 99%

“…Several research papers focus on providing Network Slicing [73,75,80,87,88] for the new generation of mobile network. The 3GPP has identi ed Network Slicing as one of the key technologies to achieve the goals in 5G Networks [80] since it is a potential solution to enable suitable exibility to address the speci c requirements of di erent use cases.…”

Section: Nfv Orchestratormentioning

confidence: 99%

Integrated NFV/SDN Architectures: A Systematic Literature Review

Bonfim,

Dias,

Fernandes

2018

Preprint

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Network Functions Virtualization (NFV) and Software-De ned Networking (SDN) are new paradigms in the move towards open software and network hardware. While NFV aims to virtualize network functions and deploy them into general purpose hardware, SDN makes networks programmable by separating the control and data planes. NFV and SDN are complementary technologies capable of providing one network solution. SDN can provide connectivity between Virtual Network Functions (VNFs) in a exible and automated way, whereas NFV can use SDN as part of a service function chain. There are many studies designing NFV/SDN architectures in di erent environments. Researchers have been trying to address reliability, performance, and scalability problems using di erent architectural designs. This Systematic Literature Review (SLR) focuses on integrated NFV/SDN architectures, with the following goals: i) to investigate and provide an in-depth review of the state-of-the-art of NFV/SDN architectures, ii) to synthesize their architectural designs, and iii) to identify areas for further improvements. Broadly, this SLR will encourage researchers to advance the current stage of development (i.e., the state-of-the-practice) of integrated NFV/SDN architectures, and shed some light on future research e orts and the challenges faced. CCS Concepts: • General and reference → Surveys and overviews; • Networks → Network design principles; Network services;

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Multi-tenancy for Virtualized Network Functions

Cited by 8 publications

References 17 publications

SDN/NFV-Based Mobile Packet Core Network Architectures: A Survey

SDN/NFV-Based Mobile Packet Core Network Architectures: A Survey

Softwarization and virtualization in 5G mobile networks: Benefits, trends and challenges

Integrated NFV/SDN Architectures: A Systematic Literature Review

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