Testing the performance and feasibility of Bluetooth communications in pervasive systems

Smart and mobile environments require seamless connections. However, due to the frequent process of ''discovery'' and disconnection of mobile devices while data interchange is happening, wireless connections are often interrupted. To minimize this drawback, a protocol that enables an easy and fast synchronization is crucial. Bearing this in mind, Bluetooth technology appears to be a suitable solution to carry on such connections due to the discovery and pairing capabilities it provides. Nonetheless, the time and energy spent when several devices are being discovered and used at the same time still needs to be managed properly. It is essential that this process of discovery takes as little time and energy as possible. In addition to this, it is believed that the performance of the communications is not constant when the transmission speeds and throughput increase, but this has not been proved formally. Therefore, the purpose of this project is twofold: Firstly, to design and build a framework-system capable of performing controlled Bluetooth device discovery, pairing and communications. Secondly, to analyze and test the scalability and performance of the \emph{classic} Bluetooth standard under different scenarios and with various sensors and devices using the framework developed. To achieve the first goal, a generic Bluetooth platform will be used to control the test conditions and to form a ubiquitous wireless system connected to an Android Smartphone. For the latter goal, various stress-tests will be carried on to measure the consumption rate of battery life as well as the quality of the communications between the devices involved.

La encuesta sobre Equipamiento y Uso de Tecnologías de la Información y Comunicación en los hogares

El objetivo de este trabajo es informar acerca de La encuesta sobre Equipamiento y Uso de Tecnologías de la Información y Comunicación (TIC) en los hogares que realiza el INE todos los años, reflejar el cambio que se está dando en el uso de las nuevas tecnologías e intentar explicar la influencia de algunas variables en los hogares a la hora de comprar en Internet. Para ello, se analizan los resultados de la encuesta en el año 2014 en líneas generales y la metodología llevada a cabo en esta, para posteriormente realizar un análisis más exhaustivo de determinadas variables y estimar un modelo Logit que pretende explicar la influencia de esas variables en la compra por Internet de los hogares. Se ha observado que el uso que la población hace de las nuevas tecnologías está cambiando de manera significativa y se ha comprobado que ciertas variables influyen en la decisión de los hogares de comprar por Internet.