Banca de QUALIFICAÇÃO: Stephanie Miranda Soares

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : Stephanie Miranda Soares
DATE: 12/12/2022
TIME: 09:00
LOCAL: Virtual
TITLE:

An Analytical Model for the Aggregate Throughput of IEEE 802.11ah Networks under the Restricted Access Window Mechanism

KEY WORDS:

IEEE 802.11ah Networks, Analytical Model, Restricted Access Window Mechanism

PAGES: 55
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
SPECIALTY: Sistemas deTelecomunicações
SUMMARY:

The IEEE 802.11ah is an amendment to the IEEE 802.11 standard to support the growth
of the Internet of Things (IoT). One of its main novelties is the restricted access window
(RAW), which is a channel access feature designed to reduce channel contention by dividing
stations into RAW groups. Each RAW group is further divided into RAW slots, and stations
only attempt channel access during the RAW slot they were assigned to. In this paper, we
propose a discrete-time Markov chain model to evaluate the average aggregate throughput of
IEEE 802.11ah networks using the RAW mechanism under saturated traffic and ideal channel conditions. The proposed analytical model describes the behavior of an active station
within its assigned RAW slot. A key aspect of the model is the consideration of the event of
RAW slot time completion during a station’s backoff operation. We study the average aggregate network throughput for various numbers of RAW slots and stations in the network. The
numerical results derived from our analytical model are compared to computer simulations
based on an IEEE 802.11ah model developed for the ns-3 simulator by other researchers,
and its performance is also compared to two other analytical models proposed in the literature. The presented results indicate that the proposed analytical model reaches the closest
agreement with independently-derived computer simulations.

BANKING MEMBERS:
Externa à Instituição - JULIANA FREITAG BORIN - UNICAMP
Presidente - 1609344 - MARCELO MENEZES DE CARVALHO
Interno - 2376576 - PAULO ROBERTO DE LIRA GONDIM
Externo à Instituição - RENATO MARIZ DE MORAES - UFPE