Accessing wireless sensor networks via dynamically reconfigurable interaction models

• Autor(a) principal: Gomes, Maria Cecília Farias Lorga
• Data de Publicação: 2012
• Outros Autores: Paulino, Hervé Miguel Cordeiro, Baptista, Adérito, Araújo, Filipe
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
• Texto Completo: http://hdl.handle.net/10362/93837
• topic: Dynamic Interaction Models; Web enabled Wireless Sensor Networks; Design Patterns; Interaction; Patterns; Sensor networks; Wireless Sensor Networks

The Wireless Sensor Networks (WSNs) technology is already perceived as fundamental for science across many domains, since it provides a low cost solution for environment monitoring. WSNs representation via the service concept and its inclusion in Web environments, e.g. through Web services, supports particularly their open/standard access and integration. Although such Web enabled WSNs simplify data access, network parameterization and aggregation, the existing interaction models and run-time adaptation mechanisms available to clients are still scarce. Nevertheless, applications increasingly demand richer and more flexible accesses besides the traditional client/server. For instance, applications may require a streaming model in order to avoid sequential data requests, or the asynchronous notification of subscribed data through the publish/subscriber. Moreover, the possibility to automatically switch between such models at runtime allows applications to define flexible context-based data acquisition. To this extent, this paper discusses the relevance of the session and pattern abstractions on the design of a middleware prototype providing richer and dynamically reconfigurable interaction models to Web enabled WSNs.