A4 Conference proceedings

Increasing the Throughput of an Unlicensed Wireless Network through Retransmissions


Publication Details
Authors: Ramezanipour Iran, Nardelli Pedro H. J., Alves Hirley, Pouttu Ari
Publication year: 2018
Language: English
Related Journal or Series Information: IEEE Vehicular Technology Conference
Title of parent publication: 2018 IEEE 87th Vehicular Technology Conference (VTC Spring)
ISBN: 978-1-5386-6356-1
eISBN: 978-1-5386-6355-4
ISSN: 1550-2252
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

Abstract

This paper analyzes the throughput of an unlicensed wireless network
where messages decoded in outage may be retransmitted. We assume that
some wireless devices such as sensors are the unlicensed users, which
communicate in the licensed uplink channel. In this case, the licensed
users that interfere with the unlicensed transmissions devices are
mobile devices whose spatial distribution are assumed to follow a
Poisson point process with respect to a reference unlicensed link. We
investigate how the number of allowed retransmissions and the spectrum
efficiency jointly affect the throughput in [bits/s/Hz] of a reference
unlicensed link for different licensed network densities, constrained by
a given required error rate. The optimal throughput is derived for this
case as a function of the network density. We also prove that the
optimal constrained throughput can always reach the unconstrained
optimal value. Our numerical results corroborate those of the analytical
findings, also illustrating how the number of allowed retransmissions
that leads to the optimal throughput changes with the error rate
requirements.


Last updated on 2019-13-03 at 12:00