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Home-based Health Services: System ArchitectureNote: This page is part of the Home-based Health Services article in the September 23, 2003 issue of our report. System DescriptionThe service is based on the OSGi-compliant architecture developed within the Hogar.es project. This architecture provides platform independence, interoperability with other services, modularity/scalability, ease of administration and remote administration.
OSGi Architectures are based on three elements: Service Provider, end user and services aggregator. These are illustrated and explained below.
All users in the trial have an ADSL connection, which is appropriate because it is “always on” and is suitable for videoconferencing. All measurements done at the patient's home (usually with the help of a caregiver) are sent automatically to the hospital and integrated immediately with the existing patient data, so the entire medical staff have the data available for queries. The system has been designed to handle one of the key concerns, which is security. At the user level, all users must be authenticated to access any application. On the system level, a security infrastructure prevents unauthorized external access. Moreover, the information extracted from the hospital or sent from the patient’s home to the hospital travels encrypted. The same security is implemented at the patient's home through the residential gateway. Equipment at the Patient's Home
At the patient's home, the installed infrastructure includes:
OSGI compliant software packages are installed in the gateway. This software is in charge of sending and receiving data, controlling all devices in the house, and communicating with the external elements of the architecture such as the aggregator (Telefónica) or the hospital. |
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