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Protocolos Multicanais para Redes de Sensores sem Fio Industriais

DOI: http://dx.doi.org/10.12721/2237-5112/rtic.v5n2p25-32

http://www.rtic.com.br

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Ruan D. Gomes1, Iguatemi E. Fonseca2 & Marcelo S. Alencar3

 

Resumo: A implantação de Redes de Sensores sem Fio (RSSF) industriais apresenta vantagens em comparação com o uso de redes cabeadas, como a maior flexibilidade e o baixo custo. No entanto, é necessário lidar com problemas típicos de redes sem fio, como interferência e o alto nível de atenuação de pequena e larga escala, devido à existência de muitos objetos móveis e obstáculos no ambiente. Uma forma de contornar as variações na qualidade dos canais em uma RSSF industrial é o uso de protocolos multicanais e estratégias de alocação dinâmica de canal. Isso é justificável pelo fato de os canais serem descorrelacionados em frequência em ambientes que apresentam grande espalhamento de atraso eficaz, como é o caso de diversos ambientes industriais. Por meio do uso de protocolos multicanais, associado à utilização de estratégias de alocação dinâmica de canais, é possível lidar com a variação na qualidade dos canais em diferentes locais da rede e também com as características não estacionárias dos canais em longos períodos de tempo. Neste artigo, algumas características das RSSFs industriais são discutidas e o uso de protocolos multicanais e alocação dinâmica de canais é apresentado como uma possível solução para a melhoria da qualidade de serviço destas redes.

Palavras-chave: Redes de Sensores sem Fio Industriais, Protocolos Multicanais, Alocação Dinâmica de Canal.

 

1 Instituto Federal de Educação, Ciência e Tecnologia da Paraíba, Guarabira, PB, Brasil. Universidade Federal de Campina Grande, Campina Grande, Brasil. Instituto de Estudos Avançados em Comunicações, Campina Grande, Brasil. Email:ruan.gomes@ifpb.edu.br
2 Instituto de Estudos Avançados em Comunicações, Campina Grande, Brasil. Universidade Federal da Paraíba, João Pessoa, Brasil. Email: iguatemi@ci.ufpb.br
3 Universidade Federal de Campina Grande, Campina Grande, Brasil. Instituto de Estudos Avançados em Comunicações, Campina Grande, Brasil. Email: malencar@dee.ufcg.edu.br

 

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