Title :
An Improved Model of LTE Random Access Channel
Author :
Osipov, Evgeny ; Riliskis, Laurynas ; Eldstal-Damlin, Albin ; Burakov, Michael ; Nordberg, Markus ; Min Wang
Author_Institution :
Lulea Univ. of Technol., Lulea, Sweden
Abstract :
In this article, we report on a mathematical model for the throughput and delay of LTE´s Random Access Channel (RACH). The model is an improvement of a cell-level Markov model of Multichannel slotted ALOHA proposed previously in the literature. The improvements concern accounting for a possibility of contention resolution in the case when terminals select same preambles and distinguishing initially-transmitting nodes from retransmitting nodes. The improved model is verified and agrees with measurements obtained from a discrete-time event-based simulator of an LTE cell.
Keywords :
3G mobile communication; Long Term Evolution; Markov processes; access protocols; cellular radio; wireless channels; 3GPP networks; LTE cell; Long Term Evolution; RACH; cell-level Markov model improvement; contention resolution; delay; discrete-time event-based simulator; improved LTE random access channel model; initially-transmitting nodes; mathematical model; multichannel slotted ALOHA; retransmitting nodes; throughput; Adaptation models; Computational modeling; Delays; Long Term Evolution; Mathematical model; Servers; Throughput;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2013 IEEE 77th
Conference_Location :
Dresden
DOI :
10.1109/VTCSpring.2013.6691881
