Indirect spatio-temporal communication for SMWSN-based collaborative data-foraging in dynamic environments
Fabiola Marcos-Solis · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · 2018
In a Sparse Mobile Wireless Sensor Network (SMWSN) the mobile sensors, called Mobile Data Collectors (MDCs), are spread over a large area to retrieve environmental data. Due to the dynamic movement of the MDCs, they should not be restricted to share the same area at the same time. It is sometimes impossible to say that one of two samples occurred first, especially if the samples were obtained by different MDCs due to the lack of perfectly synchronized clocks. In this kind of conditions, to exchange information in a direct manner is not possible without an enduring transmission link. However, for some applications, it is required for the MDCs to collaborate and exchange information about constantly changing features. To achieve a profitable collaboration among MDCs, an essential task is to determine the context of the retrieved data; which requires relating the spatial and temporal domains in a feasible way. We propose an indirect spatio-temporal communication among a group of MDCs oriented to retrieve data applying a collaborative approach for dynamic environments. This approach is inspired from stigmergy to accomplish an indirect communication among MDCs to Exchange information. The indirect spatio-temporal communication is performed through spatial-temporal relations based on causal and fuzzy causal dependencies