Orquestração de Serviços em Redes 5G

• Autor(a) principal: Amaral, Tiago Fonseca
• Data de Publicação: 2020
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.22/17658
• topic: 5G; Network Slicing; NFV; ONAP; Orchestration; Orquestração

The fifth-generation of mobile communications (5G) introduces significant changes in the deployment of networking infrastructure, based on fundamental pillars like Network Slicing, Multi-Access Edge Computing (MEC), Network Functions Virtualization (NFV) and Software-Defined Networking (SDN). This radical transformation in its architecture brings several challenges and puts under pressure the telecommunications operators to keep competitive Quality of Service (QoS) levels and enhance the way network services are designed, deployed and managed. The ability to orchestrate and manage the network assumes a crucial role in maximizing the advantages related to the use of these technologies and architectures. In this sense, operators need to use open-source developments, avoiding technology and vendor lock-in, reducing operating costs and time-to-market for new products. Several open-source network orchestration solutions have appeared with the aim of proposing a complete orchestration framework. In this context, the Open Network Automation Platform (ONAP) emerged as a very valuable open-source platform, both as a standards-aligned and standards-influencing solution capable of enabling end-to-end management and orchestration of services and resources through a multi-domain infrastructure. This Dissertation aims to integrate services developed for 5G networks, by enabling essential lifecycle management operations (e.g., instantiation, termination, etc.) using a reference open-source orchestration platform. In order to validate the considered orchestration platform, a virtual Content Delivery Network (vCDN) service was integrated. To depict the platform closed-loop control capabilities, a scenario of congestion was proposed and handled through the scale-out operation of the vCDN service. The quality of the designed workflow was improved in two specific operations of the vCDN service lifecycle management.