Evaluating Dedicated Slices of Different Configurations in 5G Core

Abstract

Network slicing is one of the most important concepts in 5G networks. It is enabled by the Network Function Virtualization (NFV) technology to allow a set of Virtual Network Functions (VNFs) to be interconnected to form a Network Service (NS). When network slices are created in 5G, some are shared among different 5G services while the others are dedicated to specific 5G services. The latter are called dedicated slices. Dedicated slices can be constructed with different configurations. In this research, dedicated slices of different configurations in 5G Core were evaluated in order to discover which one would perform better than the others. The performance of three systems would be compared: 1) Free5GC Stage 2 with each dedicated slice consisting of only UPF; 2) Free5GC Stage 3 with each dedicated slice consisting of only UPF; 3) Free5GC Stage 3 with each dedicated slice consisting of both SMF and UPF in terms of their registration time, response time, throughput, resource cost, and CPU utilization. It is shown that not one of the above systems will always be the best choice; based on the requirements, a specific system may be the best under a specific situation.

On the Impact of Flooding Attacks on 5G Slicing with Different VNF Sharing Configurations

“…The study carried out by Chai et al [6] implements a 5G testbed using open-source tools such as OpenStack [7], Tacker [8], and Free5GC [9]. The authors further evaluate the performance of three different deployment scenarios with multiple dedicated slices.…”

Modelos para Fatiamento de Redes 5G

“…O Free5GC implementa o núcleo da rede 5G, incluindo todos os elementos de rede (Network Elements -NE), e oferece suporte ao fatiamento de redes [5], [7], [16], conforme ilustrado na Figura 2. Por sua vez, o UERANSIM é um simulador de Rede de Acesso por Rádio (Radio Access Network -RAN) recomendado pelo Free5GC para criar uma simulação de rede 5G completa por software.…”

“…Como resultado, concluímos que nossas propostas de NST fornecem um referencial técnico-teórico para a criação de NSTs para redes 5G, podendo nortear futuras pesquisas sobre novos modelos para novos cenários de uso do serviço. Dentre os trabalhos futuros, destacam-se a melhoria da simulação eMBB e a simulação dos cenários mMTC e URLLC [5], [17]. Para o cenário eMBB, é necessário aumentar a quantidade de UEs.…”

“…Em outras palavras, a proposição e aplicação prática de NSTs, assim como a simulação direta de redes 5G fim-a-fim usando NSTs especificadas, são pouco comuns na literatura. Além disso, a configuração da fatia simulada neste estudo foi influenciada pelo trabalho de [5].…”

On the Rollout of Network Slicing in Carrier Networks: A Technology Radar

“…This isolation vs scalability trade-off has demonstrated that the most optimal solution is to provision 5GC slices with dedicated instances of UPF and SMF. This flavor, which corresponds to 5GC slice type B1 ( Figure 11 C), will satisfy the service requirements of most industry customers [ 47 , 48 ]. However, there also exist specific customers whose business requirements may make them ask operators for more tailored 5GC slices, such as type B2 slices ( Figure 11 D) and type B3 slices ( Figure 11 E).…”