@misc{10481/68199,
year = {2021},
month = {6},
url = {http://hdl.handle.net/10481/68199},
abstract = {When a network operator designs strategies for planning and
operating Guaranteed Bit Rate (GBR) slices, there are inherent issues
such as the under(over)-provisioning of radio resources. To avoid them,
modeling the User Equipment (UE) blocking probability in each cell is
key. This task is challenging due to the total required bandwidth
depends on the channel quality of each UE and the spatio-temporal
variations in the number of UE sessions. Under this context, we propose
an analytical model to evaluate the UE blocking probability in an
Orthogonal Frequency Division Multiple Access (OFDMA) cell. The main
novelty of our model is the adoption of a multi-dimensional Erlang-B
system which meets the reversibility property. This means our model is
insensitive to the holding time distribution for the UE session. In
addition, this property reduces the computational complexity of our
model due to the solution for the state transition probabilities has
product form. The provided results show that our model exhibits an
estimation error for the UE blocking probability below 3.5%.},
organization = {This work is partially supported by the H2020 research and
innovation project 5G-CLARITY (Grant No. 871428)},
organization = {Spanish Ministry
of Economy and Competitiveness, the European Regional Development Fund
(Project PID2019-108713RB-C53)},
organization = {Spanish Ministry of Education,
Culture and Sport (FPU Grant 17/01844)},
publisher = {IEEE},
keywords = {Blocking probability},
keywords = {OFDMA,},
keywords = {GBR},
keywords = {Erlang-B},
title = {Analytical Model for the UE Blocking Probability in an OFDMA Cell providing GBR Slices},
author = {Adamuz Hinojosa, Óscar Ramón and Ameigeiras Gutiérrez, Pablo José and Muñoz Luengo, Pablo and López Soler, Juan Manuel},
}