@misc{10481/68197,
year = {2019},
month = {10},
url = {http://hdl.handle.net/10481/68197},
abstract = {To implement the next Generation NodeBs (gNBs)
that are present in every Radio Access Network (RAN) slice
subnet, Network Function Virtualization (NFV) enables the
deployment of some of the gNB components as Virtual Networks
Functions (VNFs). Deploying individual VNF instances for these
components could guarantee the customization of each RAN slice
subnet. However, due to the multiplicity of VNFs, the required
amount of virtual resources will be greater compared to the case
where a single VNF instance carries the aggregated traffic of all
the RAN slice subnets. Sharing gNB components between RAN
slice subnets could optimize the trade-off between customization,
isolation and resource utilization. In this article, we shed light
on the key aspects in the Third Generation Partnership Project
(3GPP)/NFV standards for sharing gNB components. First, we
identify four possible scenarios for sharing gNB components.
Then, we analyze the impact of sharing on the customization
level of each RAN slice subnet. Later, we determine the main
factors that enable isolation between RAN slice subnets. Finally,
we propose a 3GPP/NFV-based description model to define the
lifecycle management of shared gNB components},
organization = {This work is partially supported by the Spanish Ministry
of Economy and Competitiveness and the European Regional Development
Fund (Project TEC2016-76795-C6-4-R)},
organization = {Spanish Ministry of Education,
Culture and Sport (FPU Grant 17/01844)},
organization = {Andalusian Knowledge
Agency (project ATIC-241-UGR18).},
publisher = {IEEE},
keywords = {3GPP},
keywords = {NFV},
keywords = {RAN slicing},
keywords = {haring gNB components},
keywords = {description model},
title = {Sharing gNB components in RAN slicing: A perspective from 3GPP/NFV standards},
doi = {10.1109/CSCN.2019.8931318},
author = {Adamuz Hinojosa, Óscar Ramón and Muñoz Luengo, Pablo and Ameigeiras Gutiérrez, Pablo José and López Soler, Juan Manuel},
}