Unified Cooperative Location System
نویسندگان
چکیده
In recent years, several techniques based on location have been developed, allowing for services based on location with different degrees of precision. The possibility of using different techniques varies between devices and regions in space, according to the available hardware on the equipment and the infra-structure. This article presents the Unified Cooperative Location System, which allows the use of every available technology to a mobile device, providing a higher availability of location services. Additionally, the system implements an information exchange mechanism, allowing devices to gather location information from nearby users, like GPS or Wi-Fi, which would otherwise be unavailable for some. The possibility of exchanging GSM information provides a viable solution for the gathering of multiple GSM signals by one device, thus significantly increasing location accuracy with this technology. Abstract. Nos últimos anos desenvolveram-se várias técnicas de localização que permitem fornecer serviços baseados na localização com diferente precisão. A possibilidade de utilizar as diferentes técnicas varia entre dispositivos e região do espaço, consoante o hardware dispońıvel nos equipamentos e na infra-estrutura. Neste artigo apresenta-se o Unified Cooperative Location System, um sistema que permite utilizar todas as tecnologias dum dispositivo móvel para fornecer uma maior disponibilidade do serviço de localização. O sistema implementa ainda um mecanismo de troca de informação, que permite que dispositivos próximos partilhem entre si informação importante para o processo de localização que poderia não estar disponivel aos mesmos, tais como medidas Wi-Fi Nos últimos anos desenvolveram-se várias técnicas de localização que permitem fornecer serviços baseados na localização com diferente precisão. A possibilidade de utilizar as diferentes técnicas varia entre dispositivos e região do espaço, consoante o hardware dispońıvel nos equipamentos e na infra-estrutura. Neste artigo apresenta-se o Unified Cooperative Location System, um sistema que permite utilizar todas as tecnologias dum dispositivo móvel para fornecer uma maior disponibilidade do serviço de localização. O sistema implementa ainda um mecanismo de troca de informação, que permite que dispositivos próximos partilhem entre si informação importante para o processo de localização que poderia não estar disponivel aos mesmos, tais como medidas Wi-Fi e GPS. A troca de informação GSM permite uma solução viável para a obtenção de múltiplos sinais GSM por um dispositivo, permitindo assim aumentar significativamente a precisão de localização usando esta
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