O uso de controlabilidade estrutural na avaliação de disseminação de dados em redes veiculares

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: Costa, Filipe Emanuel Silva
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 Alagoas
Brasil
Programa de Pós-Graduação em Modelagem Computacional de Conhecimento
UFAL
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://www.repositorio.ufal.br/handle/riufal/5514
Resumo: Vehicle Ad Hoc Networks (VANETs) establish a new paradigm in mobile computing, which is to enable wireless communication between vehicles. This work mapped the topology of VANETs in a Complex Network to identify nodes influencing the network. For this, a structural controllability metric was used in order to evaluate the complexity of network control at time intervals. Structural controllability is a metric used in the context of Complex Networks, its purpose is to identify important vertices for the control of a network. In order to carry out the evaluation, five real scenarios were used, four scenarios using communication between vehicles only (V2V) and a scenario using vehicle communication for infrastructures (V2I). The analysis of the controllability in the vehicular networks was executed in a segmented way, allowing to evaluate each moment of the particular time line. Together, a controllability analysis was performed considering different radii of communication between vehicles, aiming to understand the influence of the topology in the control of the networks. The analysis was also performed considering an aggregate graph for each scenario. The results revealed how the control behavior of each scenario occurred, considering the temporal evolution of the network. In addition, it was possible to understand that there are times when the network has a better control providing na appropriate moment for dissemination of information. In view of this, it was found that to obtain total control of the networks analyzed here, it is necessary to reach about 70% of the total nodes of the network.