Avaliando aspectos de tolerância a falhas em protocolos de roteamento para redes de sensores sem fio

  • Daniel F. Macedo UFMG
  • Luiz H. A. Correia UFMG / UFLA
  • Aldri L. dos Santos UFMG / UFC
  • Antonio A. F. Loureiro UFMG
  • José Marcos S. Nogueira UFMG

Resumo


Tolerância a falhas é um requisito essencial para o projeto de protocolos e aplicações para Redes de sensores sem fio (RSSF), pois falhas de hardware e comunicação são frequentes. Neste trabalho estudamos o comportamento de protocolos de roteamento para redes de disseminação contínua de dados perante a ocorrência de falhas. Apresentamos os principais agentes causadores de falhas silenciosas, incluindo ataques de segurança. Classificamos estas falhas quanto a extensão e persistência, e utilizamos esta classificação para avaliar, via simulação, protocolos de roteamento para redes de disseminação contínua de dados. Verificamos que falhas em grandes regiões da rede são o tipo mais prejudicial, e mostramos como protocolos de roteamento podem economizar energia desligando temporariamente nós isolados da rede.

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Publicado
09/05/2005
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MACEDO, Daniel F.; CORREIA, Luiz H. A.; SANTOS, Aldri L. dos; LOUREIRO, Antonio A. F.; NOGUEIRA, José Marcos S.. Avaliando aspectos de tolerância a falhas em protocolos de roteamento para redes de sensores sem fio. In: WORKSHOP DE TESTES E TOLERÂNCIA A FALHAS (WTF), 6. , 2005, Fortaleza/CE. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2005 . p. 13-24. ISSN 2595-2684. DOI: https://doi.org/10.5753/wtf.2005.23364.