One of the most promising applications of sensor networks is mobile health monitoring. The key concept of New Generation Networks (NGN) is IP Multimedia Subsystem (IMS). The possibility of using mobile devices as gateways between sensor networks and IMS has led to the development of integrated solutions such as the one proposed in this paper. Event-based SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE) architecture is considered as the best solution for IMS based mobile health monitoring. This paper also describes usage of the Session Initiation Protocol (SIP) protocol to communicate with the IMS core, whereas data are transmitted within the body of SIP messages. Thus there is no need for additional transport protocol. Presence Information Data Format (PIDF) is used as data format and data privacy is controlled by XML Configuration Access Protocol (XCAP), which also provides the ability to manage groups of patients.
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