With the fast and unstoppable development of technology, the amount of available technological devices and the data they produce is overwhelming. In analyzing the context of a smart home, a diverse group of intelligent devices generating constant reports of its environment information is needed for the proper control of the house. Due to this demand, many possible solutions have been developed in the literature to assess the need for processing power and storage capacity. This work proposes HOsT (home-context-aware fog-computing solution)—a solution that addresses the problems of data heterogeneity and the interoperability of smart objects in the context of a smart home. HOsT was modeled to compose a set of intelligent objects to form a computational infrastructure in fog. A publish/subscribe communication module was implemented to abstract the details of communication between objects to disseminate heterogeneous information. A performance evaluation was carried out to validate HOsT. The results show evidence of efficiency in the communication infrastructure; and in the impact of HOsT compared with a cloud infrastructure. Furthermore, HOsT provides scalability about the number of devices acting simultaneously and demonstrates its ability to work with different devices.

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Este trabalho propõe o HOST – uma solução que trata dos problemas da heterogeneidade de dados e da interoperabilidade de objetos inteligentes no contexto de uma casa inteligente. O HOST foi modelado com o intuito de compor um conjunto de objetos inteligentes para formar uma infraestrutura computacional em névoa. Para disseminar as informações heterogêneas, implementou-se um módulo de comunicação Publish/Subscribe que permite abstrair os detalhes de comunicação entre os objetos. Os resultados da avaliação de desempenho mostram evidências de eficiências nos recursos computacionais dos dispositivos, bem como na infraestrutura de comunicação do HOST.