FWB: Algoritmo para coleta de dados em redes com canais com maior largura de banda

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: Rodrigo Costa Tavares
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Minas Gerais
UFMG
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/1843/SLSC-BBZEXZ
Resumo: Many Wireless Sensor Networks (WSNs) applications demand to collect large volumes of data in a coordinated approach. To do this, a many-to-one pattern (convergecast) communication in tree-based WSN is used, but traffic near the sink node commonly becomes the network bottleneck. Thus, we propose an extension to the 802.15.4 standard to provide wider bandwidth channels. We explore how fast the information can be collected in a WSN organized as a tree, with the radios operating with these wider bandwidth channels. As consequence, we proposed and implemented Funneling Wider Bandwidth (FWB), an algorithm that minimizes schedule length in networks with radios capable of operate with the proposed extension. We proved that the algorithm is optimal in calculating a minimum number of time slots. In this way, we obtain a higher average throughput and a lesser number of time slots. Results from simulations and experiments on a real testbed confirm these gains. The proposed approach could be adapted and used with other important related standards such as WirelessHART, ISA 100.11a and IEEE 802.15.4e TSCH. Experiment results showed that with this wider bandwidth emulated in a given topology, the packets received per second by the sink node was increased by 122.8% in comparison with just one bandwidth.