5G Infrastructure Network Slicing: E2E Mean Delay Model and Effectiveness Assessment to Reduce Downtimes in Industry 4.0
Metadatos
Mostrar el registro completo del ítemAutor
Chinchilla Romero, Lorena; Prados Garzón, Jonathan; Ameigeiras Gutiérrez, Pablo José; Muñoz Luengo, Pablo; López Soler, Juan ManuelEditorial
MDPI
Materia
Infrastructure slicing Network slicing Private networks 5G Delay Response time Isolation
Fecha
2021-12-29Referencia bibliográfica
Chinchilla-Romero, L... [et al.]. 5G Infrastructure Network Slicing: E2E Mean Delay Model and Effectiveness Assessment to Reduce Downtimes in Industry 4.0. Sensors 2022, 22, 229. [https://doi.org/10.3390/s22010229]
Patrocinador
H2020 project 5G-CLARITY 871428; Spanish Government PID2019-108713RB-C53; TRUE-5GResumen
Fifth Generation (5G) is expected to meet stringent performance network requisites of
the Industry 4.0. Moreover, its built-in network slicing capabilities allow for the support of the
traffic heterogeneity in Industry 4.0 over the same physical network infrastructure. However, 5G
network slicing capabilities might not be enough in terms of degree of isolation for many private
5G networks use cases, such as multi-tenancy in Industry 4.0. In this vein, infrastructure network
slicing, which refers to the use of dedicated and well isolated resources for each network slice at every
network domain, fits the necessities of those use cases. In this article, we evaluate the effectiveness of
infrastructure slicing to provide isolation among production lines (PLs) in an industrial private 5G
network. To that end, we develop a queuing theory-based model to estimate the end-to-end (E2E)
mean packet delay of the infrastructure slices. Then, we use this model to compare the E2E mean
delay for two configurations, i.e., dedicated infrastructure slices with segregated resources for each
PL against the use of a single shared infrastructure slice to serve the performance-sensitive traffic
from PLs. Also we evaluate the use of Time-Sensitive Networking (TSN) against bare Ethernet to
provide layer 2 connectivity among the 5G system components. We use a complete and realistic
setup based on experimental and simulation data of the scenario considered. Our results support the
effectiveness of infrastructure slicing to provide isolation in performance among the different slices.
Then, using dedicated slices with segregated resources for each PL might reduce the number of the
production downtimes and associated costs as the malfunctioning of a PL will not affect the network
performance perceived by the performance-sensitive traffic from other PLs. Last, our results show
that, besides the improvement in performance, TSN technology truly provides full isolation in the
transport network compared to standard Ethernet thanks to traffic prioritization, traffic regulation,
and bandwidth reservation capabilities.