A network operator-biased approach for multi-service network function placement in a 5G network slicing architecture

The traditional network is configured based on the prescribed network requirements. Sometimes the resources of the network are underutilized and at sometimes there may resource starvation because of the static configuration of the network. As against traditional network, which is operated either as dedicated network or as an overlay network, network services can be operated over a shared network infrastructure. Thus maximum resource utilization under minimal infrastructure cost can be achieved. The on-demand network requirement can be configured dynamically using network slice. The backbone of the rapidly evolving 5G technology is network slice and service networks can be benefited from it. Different network function for multiple tenants can be enabled customized using network slice with each slice operating independently. Network slice can be offered as a service to meet various requirements from the network slice tenant with different granularities. The Software Defined Networking and Network Function Virtualization are the enabling technologies for network slice. This paper discusses various network slicing use case requirements. And also OpenFlow based software defined network environment is simulated to validate the discussions. Experimental results show that the efficiency of the service network is maximized with improved reliability of service

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Network slicing: a next generation 5G perspective

EURASIP Journal on Wireless Communications and Networking ◽

10.1186/s13638-021-01983-7 ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Prashant Subedi ◽

Abeer Alsadoon ◽

P. W. C. Prasad ◽

Sabih Rehman ◽

Nabil Giweli ◽

...

Keyword(s):

Network Architecture ◽

High Speed ◽

System Capacity ◽

Fourth Generation ◽

Virtual Networks ◽

Multiple Use ◽

Network Slicing ◽

Network Function ◽

5G Network ◽

Generation Network

AbstractFifth-generation (5G) wireless networks are projected to bring a major transformation to the current fourth-generation network to support the billions of devices that will be connected to the Internet. 5G networks will enable new and powerful capabilities to support high-speed data rates, better connectivity and system capacity that are critical in designing applications in virtual reality, augmented reality and mobile online gaming. The infrastructure of a network that can support stringent application requirements needs to be highly dynamic and flexible. Network slicing can provide these dynamic and flexible characteristics to a network architecture. Implementing network slicing in 5G requires domain modification of the preexisting network architecture. A network slicing architecture is proposed for an existing 5G network with the aim of enhancing network dynamics and flexibility to support modern network applications. To enable network slicing in a 5G network, we established the virtualisation of the underlying physical 5G infrastructure by utilising technological advancements, such as software-defined networking and network function virtualisation. These virtual networks can fulfil the requirement of multiple use cases as required by creating slices of these virtual networks. Thus, abstracting from the physical resources to create virtual networks and then applying network slicing on these virtual networks enable the 5G network to address the increased demands for high-speed communication.

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Dynamic 5G Network Slicing

International Journal of Advanced Trends in Computer Science and Engineering ◽

10.30534/ijatcse/2021/741022021 ◽

2021 ◽

Vol 10 (2) ◽

pp. 1006-1010

Keyword(s):

Online Algorithm ◽

Network Virtualization ◽

Virtual Network ◽

Prediction Algorithm ◽

Network Slicing ◽

Traffic Demand ◽

Network Function ◽

5G Network ◽

Different Types ◽

Virtual Network Function

5G network slicing is the use of network virtualization to divide single network connections into multiple distinct virtual connections that provide different amounts of resources to different types of traffic. A 5G NS (Network Slicing) instance is composed of a set of virtual network function (VNF) instances to form the end-to-end (E2E) virtual network for the slice to operate independently. The deployment of a NS is a typical virtual network embedding (VNE) problem. The proposed algorithm consists of three parts. First, we devise a Holt-Winters (HW) prediction algorithm to determine traffic demand for network slices. This method is intended to avoid frequent changes in network topology. Second, we propose a virtual network function (VNF) adaptive scaling strategy to reasonably determine the number of VNFs and resources required for network slices to avoid resource wastage. Finally, we develop a proactive online algorithm to deploy network slices.

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On Blockchain-Based Cross-Service Communication and Resource Orchestration on Edge Clouds

Informatics ◽

10.3390/informatics8010013 ◽

2021 ◽

Vol 8 (1) ◽

pp. 13

Author(s):

Konstantinos Papadakis-Vlachopapadopoulos ◽

Ioannis Dimolitsas ◽

Dimitrios Dechouniotis ◽

Eirini Eleni Tsiropoulou ◽

Ioanna Roussaki ◽

...

Keyword(s):

Network Function Virtualization ◽

Network Resources ◽

Service Orchestration ◽

Network Slicing ◽

Network Function ◽

Resource Orchestration ◽

Full Capacity ◽

Cloud Datacenter ◽

Set Up ◽

The Internet Of Things

With the advent of 5G verticals and the Internet of Things paradigm, Edge Computing has emerged as the most dominant service delivery architecture, placing augmented computing resources in the proximity of end users. The resource orchestration of edge clouds relies on the concept of network slicing, which provides logically isolated computing and network resources. However, though there is significant progress on the automation of the resource orchestration within a single cloud or edge cloud datacenter, the orchestration of multi-domain infrastructure or multi-administrative domain is still an open challenge. Towards exploiting the network service marketplace at its full capacity, while being aligned with ETSI Network Function Virtualization architecture, this article proposes a novel Blockchain-based service orchestrator that leverages the automation capabilities of smart contracts to establish cross-service communication between network slices of different tenants. In particular, we introduce a multi-tier architecture of a Blockchain-based network marketplace, and design the lifecycle of the cross-service orchestration. For the evaluation of the proposed approach, we set up cross-service communication in an edge cloud and we demonstrate that the orchestration overhead is less than other cross-service solutions.

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