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Ítem Arquitectura para la interconectividad de la tecnología Bluetooth con redes IP cableadas para transporte de voz(Universidad Icesi, 2008-07-24) Guzmán F., Juan P.; Hurtado G., Javier A.; Caicedo, Oscar Mauricio; Reinoso R., Daryan F.; Martínez, Francisco OrlandoEn el presente documento se estudian los criterios y requerimientos tecnológicos necesarios para la construcción de una arquitectura que permita la interconectividad de Bluetooth con redes Ethernet como base para la prestación de servicios de VoIP; adicionalmente se detallan los resultados obtenidos a partir de un proceso de validación de la arquitectura con base en la simulación de una serie de scenarios y un análisis de desempeño de un prototipo funcional para la prestación de dichos servicios.Ítem Propuesta de arquitectura para facturación y pago por proximidad de servicios ubicuos en el contexto colombiano(2008-07-24) Solarte, Zeida; Imbús Guzmán, Javier; Caicedo, Oscar Mauricio; Ausecha Penagos, MiltonUbiquitous services pretend to interact proactively with the user, proposing solutions to some problems. Those services must to be billed in a secure and efficient form in order to guarantee confidence between customer new services that fulfill the customer’s expectation. For this reason, ubiquitous computing is a new research area that looks for the provision of services in a transparent way for the user in mobile environments. However, ubiquitous services have the problem of a non-existent protocol that fulfills all the mobility, identity and context requirements of such services. This paper describes the development of ubiquitous services pilot that pretends to fulfill such requirements.Ítem Plataforma de acceso universal a mensajería instantánea móvil(Universidad Icesi, 2007-03-08T21:45:37Z) Hurtado, Julián Andrés; Caicedo, D. A.; Figueroa, E.; Martínez, Francisco Orlando; Caicedo, Oscar MauricioOne of the most succesful services is Instant Messaging (IM), due to the versatility and simplicity offered to users. Because of the success of mobile telephony, new horizons have been developed for IM. However, the diversity existing in protocols and transport technologies have lead the technology to a low interoperability environment. This papers describes a platform called PAUMIM , because its spelling in Spanish, proposed by our research group, that allows the communication between different providers of IM services using mobile devices.Ítem Descubrimiento e interacción de servicios móviles ubicuos utilizando Bluetooth y WiFi(Universidad Icesi, 2008-07-23) Fajardo, Ricardo Andrés; Martínez, Francisco Orlando; Mesa Durango, Javier; Caicedo, Oscar Mauricio; Miramá, Víctor Fabián,Wireless Communications, especially cellular systems have an important role in actual communication systems. Mobility is an intrinsic characteristic for people that motivate the creation of and commerce. This architecture pretends to adapt some existent technologies for electronic billing and payment to the Colombian context.