scholarly journals Autonomic Network Management and Cross-Layer Optimization in Software Defined Radio Environments

2019 ◽  
Vol 11 (2) ◽  
pp. 37 ◽  
Author(s):  
Adamantia Stamou ◽  
Grigorios Kakkavas ◽  
Konstantinos Tsitseklis ◽  
Vasileios Karyotis ◽  
Symeon Papavassiliou
Keyword(s):  
Network Management ◽  
Software Defined Radio ◽  
Network Function Virtualization ◽  
Cross Layer ◽  
Allocation Mechanism ◽  
Network Function ◽  
Cross Layer Optimization ◽  
Significant Research ◽  
Improved Performance ◽  
Eu Project

The demand for Autonomic Network Management (ANM) and optimization is as intense as ever, even though significant research has been devoted towards this direction. This paper addresses such need in Software Defined (SDR) based Cognitive Radio Networks (CRNs). We propose a new framework for ANM and network reconfiguration combining Software Defined Networks (SDN) with SDR via Network Function Virtualization (NFV) enabled Virtual Utility Functions (VUFs). This is the first approach combining ANM with SDR and SDN via NFV, demonstrating how these state-of-the-art technologies can be effectively combined to achieve reconfiguration flexibility, improved performance and efficient use of available resources. In order to show the feasibility of the proposed framework, we implemented its main functionalities in a cross-layer resource allocation mechanism for CRNs over real SDR testbeds provided by the Orchestration and Reconfiguration Control Architecture (ORCA) EU project. We demonstrate the efficacy of our framework, and based on the obtained results, we identify aspects that can be further investigated for improving the applicability and increasing performance of our broader framework.

scholarly journals A Multi-Provider End-to-End Dynamic Orchestration Architecture Approach for 5G and Future Communication Systems

2021 ◽  
Vol 11 (24) ◽  
pp. 11914
Author(s):  
José Olimpio Rodrigues Batista ◽  
Douglas Chagas da Silva ◽  
Moacyr Martucci ◽  
Regina Melo Silveira ◽  
Carlos Eduardo Cugnasca
Keyword(s):  
Mobile Networks ◽  
Software Defined Radio ◽  
Communication Systems ◽  
Quality Parameters ◽  
Network Function Virtualization ◽  
Economic Activities ◽  
Network Function ◽  
End To End ◽  
Horizontal Handover

Network segregation is the solution adopted in the IMT-2020 standardization of the International Telecommunications Union (ITU), better known as 5G networks (Fifth Generation Mobile Networks), under development to meet the requirements of performance, reliability, energy, and economic efficiency required by applications in the various verticals of current and near-future economic activities. The philosophy adopted for the IMT-2020 standardization relies on the use of Software-Defined Networking (SDN), Network Function Virtualization (NFV), and Software-Defined Radio (SDR), i.e., the softwarization of the network. Softwarization allows network segregation through its slicing, which is discussed herein this work. Network slicing is performed by a novel Orchestrator, as provided in IMT-2020, which maintains the end-to-end network slices independent of each other and performs horizontal handover when the possibility of a loss of Quality of Service (QoS) is predictively detected by monitoring quality parameters during operation. Therefore, the Orchestrator is dynamic, operates in uptime, and allows horizontal handover. Hence, it chooses the most appropriate telecommunication infrastructure provider and network operator to guarantee QoS and Quality of Experience (QoE) to end-users in each network segment. These features make this work modern and keep it aligned with the actions being carried out by ITU. Based on this objective, as the main result of this paper, we propose an effective architecture for implementing the Orchestrator, not only to contribute to the state of the art for 5G and beyond communication systems but also to generate economic, technological, and social impacts.

scholarly journals Software Defined Networking (SDN) and Network Function Virtualization (NFV)

2020 ◽  
Vol 12 (1) ◽  
pp. 7 ◽  
Author(s):  
Symeon Papavassiliou
Keyword(s):  
Practical Importance ◽  
Software Defined Networking ◽  
Network Function Virtualization ◽  
Original Research ◽  
Network Architectures ◽  
Network Function ◽  
Black Boxes ◽  
5G Network ◽  
Significant Research

The role of Software Defined Networking (SDN) and Network Function Virtualization (NFV) have been instrumental in realizing the transition and vision “from black boxes to a white box towards facilitating 5G network architectures”. Though significant research results and several deployments have occurred and realized over the last few years focusing on the NFV and SDN technologies, several issues—both of theoretical and practical importance—remain still open. Accordingly, the papers of this special issue are significant contributions samples within the general ecosystem highlighted above, ranging from SDN and NFV architectures and implementations, to SDN-NFV integration and orchestration approaches, while considering issues associated with optimization, network management and security aspects. In particular, a total of nine excellent articles (one review and eight original research articles) have been accepted, following a rigorous review process, and addressing many of the aforementioned challenges and beyond.

CROSS LAYER OPTIMIZATION WITH QOS FOR HETEROGENOUS AD-HOC NETWORK

2019 ◽  
Vol 7 (4) ◽  
pp. 1 ◽  
Author(s):  
SETHI ANITA ◽  
VIJAY SANDIP ◽  
KUMAR RAKESH ◽  
◽  
◽  
...  
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Cross Layer ◽  
Cross Layer Optimization

QoE-VS: A Cross-Layer QoE-Aware Video Streaming Platform Using Software-Defined Radio

2020 ◽  
Author(s):  
Mohammad Nazmus Sadat ◽  
Erwin Vargas-Alfonso ◽  
Rui Dai ◽  
Ziqian Huang ◽  
Yiling Fu ◽  
...  
Keyword(s):  
Video Streaming ◽  
Software Defined Radio ◽  
Cross Layer

scholarly journals Using Aerial and Vehicular NFV Infrastructures to Agilely Create Vertical Services

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1342
Author(s):  
Borja Nogales ◽  
Miguel Silva ◽  
Ivan Vidal ◽  
Miguel Luís ◽  
Francisco Valera ◽  
...  
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Cost Effective ◽  
Network Services ◽  
Network Function Virtualization ◽  
Mobile Environments ◽  
Network Resources ◽  
The Public ◽  
Network Function ◽  
And Performance

5G communications have become an enabler for the creation of new and more complex networking scenarios, bringing together different vertical ecosystems. Such behavior has been fostered by the network function virtualization (NFV) concept, where the orchestration and virtualization capabilities allow the possibility of dynamically supplying network resources according to its needs. Nevertheless, the integration and performance of heterogeneous network environments, each one supported by a different provider, and with specific characteristics and requirements, in a single NFV framework is not straightforward. In this work we propose an NFV-based framework capable of supporting the flexible, cost-effective deployment of vertical services, through the integration of two distinguished mobile environments and their networks: small sized unmanned aerial vehicles (SUAVs), supporting a flying ad hoc network (FANET) and vehicles, promoting a vehicular ad hoc network (VANET). In this context, a use case involving the public safety vertical will be used as an illustrative example to showcase the potential of this framework. This work also includes the technical implementation details of the framework proposed, allowing to analyse and discuss the delays on the network services deployment process. The results show that the deployment times can be significantly reduced through a distributed VNF configuration function based on the publish–subscribe model.

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

Informatics ◽  
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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