A Survey on Network Functions Virtualization for Telecom Paradigm

Anvith, Pitta vineel; Gunavathi, N.; Malarkodi, B.; Rebekka, B.

doi:10.1109/imicpw.2019.8933271

Cited by 9 publications

(7 citation statements)

References 7 publications

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“…Of course, this type of business model is very popular because it is open for many companies that do not have their own network [125]. On the other hand, it gives an opportunity for better utilization of hardware resources [128]. Moreover, the physical infrastructure provider is obligated by governments and the regulatory agencies to ensure proper isolation and protection following security regulations [129].…”

Section: ) Characteristicsmentioning

confidence: 99%

“…The principal vulnerabilities for Telecommunications verticals are caused by network virtualization, shared resources, and edge paradigm ecosystem. This trend is noticeable, especially in the case when more and more typical network functions (NF) are virtualized (VNF) and launched in different places in the network [135]. Their location often depends on the requirements of latency or bandwidth limits, so they are hosted where necessary (see [136]) or for economic purposes where the resources are available.…”

Section: ) Threats and Vulnerabilitiesmentioning

confidence: 99%

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Verticals in 5G MEC-Use Cases and Security Challenges

et al. 2021

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5G is the fifth-generation cellular network satisfying the requirements IMT-2020 (International Mobile Telecommunications-2020) of the International Telecommunication Union. Mobile network operators started using it worldwide in 2019. Generally, 5G achieves exceptionally high values of performance parameters of access and transmission. The application of edge servers facilitated the implementation of such requirements of 5G, which resulted in 5G MEC (Multi-access Edge Computing) technology. Moreover, to optimize services for specific business applications, the concept of 5G vertical industries has been proposed. In this paper, we study how the application of the MEC technology affects the functioning of 5G MEC-based services. We consider twelve representative vertical industries of 5G MEC by presenting their essential characteristics, threats, vulnerabilities, and known attacks. Next, we analyze their functional properties, give efficiency patterns and identify the effect of applying the MEC technology in 5G on the resultant network's quality parameters to identify the expected security requirements. Finally, we identify the impact of classified threats on the 5G empowered vertical industries and identify the most sensitive cases to focus on their protection against network attacks in the first place.

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Section: ) Characteristicsmentioning

confidence: 99%

Section: ) Threats and Vulnerabilitiesmentioning

confidence: 99%

Verticals in 5G MEC-Use Cases and Security Challenges

et al. 2021

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“…Extensive literature has been carried out on the various aspects of NFV such as architectural designs [191], [192], resource allocation [193], [194], energy efficiency [195], performance improvement [196] and security [197], [198]. More details can be found in [191], [199], [200].…”

Section: A Network Function Virtualization (Nfv)mentioning

confidence: 99%

A Survey of Coded Distributed Computing

Ng¹,

Lim²,

Luong³

et al. 2020

Preprint

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Distributed computing has become a common approach for large-scale computation of tasks due to benefits such as high reliability, scalability, computation speed, and costeffectiveness. However, distributed computing faces critical issues related to communication load and straggler effects. In particular, computing nodes need to exchange intermediate results with each other in order to calculate the final result, and this significantly increases communication overheads. Furthermore, a distributed computing network may include straggling nodes that run intermittently slower. This results in a longer overall time needed to execute the computation tasks, thereby limiting the performance of distributed computing. To address these issues, coded distributed computing (CDC), i.e., a combination of coding theoretic techniques and distributed computing, has been recently proposed as a promising solution. Coding theoretic techniques have proved effective in WiFi and cellular systems to deal with channel noise. Therefore, CDC may significantly reduce communication load, alleviate the effects of stragglers, provide fault-tolerance, privacy and security. In this survey, we first introduce the fundamentals of CDC, followed by basic CDC schemes. Then, we review and analyze a number of CDC approaches proposed to reduce the communication costs, mitigate the straggler effects, and guarantee privacy and security. Furthermore, we present and discuss applications of CDC in modern computer networks. Finally, we highlight important challenges and promising research directions related to CDC.

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“…Furthermore, NFV and SDN are mutually beneficial to each other. For example, SDN can accelerate NFV deployment by offering a flexible and automated approach to chaining functions, configuring network connectivity and bandwidth, and automating the security and policy control [19][20][21]. Additionally, it can be used to support SFC to reduce both the management complexity and the operational cost.…”

Section: Introductionmentioning

confidence: 99%

Efficient Placement of Service Function Chains in Cloud Computing Environments

2021

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The widespread adoption of network function virtualization (NFV) leads to providing network services through a chain of virtual network functions (VNFs). This architecture is called service function chain (SFC), which can be hosted on top of commodity servers and switches located at the cloud. Meanwhile, software-defined networking (SDN) can be utilized to manage VNFs to handle traffic flows through SFC. One of the most critical issues that needs to be addressed in NFV is VNF placement that optimizes physical link bandwidth consumption. Moreover, deploying SFCs enables service providers to consider different goals, such as minimizing the overall cost and service response time. In this paper, a novel approach for the VNF placement problem for SFCs, called virtual network functions and their replica placement (VNFRP), is introduced. It tries to achieve load balancing over the core links while considering multiple resource constraints. Hence, the VNF placement problem is first formulated as an integer linear programming (ILP) optimization problem, aiming to minimize link bandwidth consumption, energy consumption, and SFC placement cost. Then, a heuristic algorithm is proposed to find a near-optimal solution for this optimization problem. Simulation studies are conducted to evaluate the performance of the proposed approach. The simulation results show that VNFRP can significantly improve load balancing by 80% when the number of replicas is increased. Additionally, VNFRP provides more than a 54% reduction in network energy consumption. Furthermore, it can efficiently reduce the SFC placement cost by more than 67%. Moreover, with the advantages of a fast response time and rapid convergence, VNFRP can be considered as a scalable solution for large networking environments.

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A Survey on Network Functions Virtualization for Telecom Paradigm

Cited by 9 publications

References 7 publications

Verticals in 5G MEC-Use Cases and Security Challenges

Verticals in 5G MEC-Use Cases and Security Challenges

A Survey of Coded Distributed Computing

Efficient Placement of Service Function Chains in Cloud Computing Environments

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