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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2014.tde-13082015-103408
Document
Author
Full name
Renan Cerqueira Afonso Alves
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2014
Supervisor
Committee
Margi, Cíntia Borges (President)
Batista, Daniel Macedo
Ruggiero, Wilson Vicente
Title in Portuguese
Redes de sensores sem fio: análise de desempenho da camada de enlace.
Keywords in Portuguese
Análise de desempenho
Camada de enlace
Rede de Petri
Redes de sensores sem fio
Abstract in Portuguese
As camadas de enlace empregadas em redes sem fio de baixo custo e desempenho limitado, como as redes de sensores sem fio, são implementadas segundo o padrão IEEE 802.15.4. Prever o desempenho deste padrão é importante para analisar a viabilidade e o desempenho esperado de projetos envolvendo esse tipo de rede. Constatou-se que trabalhos anteriores com esse objetivo são incompletos no tocante às métricas aferidas e tem foco no cálculo de probabilidades, o que não faz parte da especificação do padrão. Assim, o objetivo deste trabalho foi projetar e implementar um modelo comportamental do padrão IEEE 802.15.4, cujos parâmetros possam ser facilmente alterados e que seja capaz de aferir as principais métricas de uma rede: vazão, taxa de entrega, atraso e gasto de energia. Os objetivos foram cumpridos com a validação do modelo perante simulação com o NS2. Além disso, o modelo foi utilizado para estudar a variação dos parâmetros aMaxFrameRetries, macMaxCSMABackos, initialCW e aUnitBackoPeriod do padrão IEEE 802.15.4, para estudar cenários em que os nós possuem tráfego assimétrico e cenários com diferentes relações de tamanho e taxa de chegada de pacotes, mantendo a taxa de bits constante.
Title in English
Wireless sensor networks: MAC layer performance analysis.
Keywords in English
MAC layer
Performance analysis
Petri net
Wireless sensor networks
Abstract in English
Low cost and performance constrained wireless networks, such as wireless sensor networks, employ IEEE 802.15.4 standard as its MAC layer. Foreseeing this standard's performance is essential to analyze the feasibility and expected metrics results of these networks projects. It was observed that previous works with that aim are both incomplete regarding metrics of interest and focus on probability calculation, which is not part of the standard specication. Thus, the objective of this work is to project and implement a behavioral IEEE 802.15.4 standard model, which parameters may be easily set and that covers the main metrics of interest: throughput, delivery rate, delay and energy. The objectives were achieved, with model validation against NS2 simulations. Furthermore, the model was employed to analyze the performance variation caused by the parameters aMaxFrameRetries, macMaxCSMABackos, initialCW and aUnitBackoPeriod from the IEEE 802.15.4 standard and also scenarios with asymmetric trac conditions and packet size and arrival rate variations, maintaining a constant bitrate.
 
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Publishing Date
2015-08-13
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • ALVES, RENAN C.A., and MARGI, CÍNTIA B. A timed petri net model for frame transmission on IEEE 802.15.4 beacon-enabled mode [doi:10.1145/2507248.2507254]. In the 10th ACM symposium, Barcelona. Proceedings of the 10th ACM symposium on Performance evaluation of wireless ad hoc, sensor, & ubiquitous networks - PE-WASUN '13.New York : ACM Press, 2013.
All rights of the thesis/dissertation are from the authors
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