Paper Info
Title
A Tractable Model of the LTE Access Reservation Procedure for Machine-Type Communications
Abstract
A canonical scenario in Machine-Type Communications (MTC) is the one featuring a large number of devices, each of them with sporadic traffic. Hence, the number of served devices in a single LTE cell is not determined by the available aggregate rate, but rather by the limitations of the LTE access reservation protocol. Specifically, the limited number of contention preambles and the limited amount of uplink grants per random access response are crucial to consider when dimensioning LTE networks for MTC. We propose a low-complexity model of LTE's access reservation protocol that encompasses these two limitations and allows us to evaluate the outage probability at click-speed. The model is based chiefly on closed-form expressions, except for the part with the feedback impact of retransmissions, which is determined by solving a fixed point equation. Our model overcomes the incompleteness of the existing models that are focusing solely on the preamble collisions. A comparison with the simulated LTE access reservation procedure that follows the 3GPP specifications, confirms that our model provides an accurate estimation of the system outage event and the number of supported MTC devices.
Year
DOI
Venue
2015
10.1109/GLOCOM.2015.7417529
IEEE Global Communications Conference
Field
DocType
Volume
Reservation,Preamble,Expression (mathematics),Computer science,Computer network,Outage probability,Fixed point equation,Dimensioning,Random access,Telecommunications link
Journal
abs/1505.01713
ISSN
Citations 
PageRank 
2334-0983
5
0.59
References 
Authors
6
5
Name
Order
Citations
PageRank
Jimmy Jessen Nielsen115616.82
Dong-Min Kim213015.54
Germán Corrales Madueño3817.53
Nuno K. Pratas420413.12
Popovski Petar54262316.91