Anytime and anywhere monitoring for the elderly

In this paper we propose a system architecture for telemonitoring system. The proposed architecture is not limited to only indoor environment. By employing a mobile phone that implements a personal server, the system also supports the monitoring of old people while away from home. In addition to the system architecture, we also propose the middleware architecture for the personal server and the cross-layer protocol stack architecture for the sensor node. The middleware and the cross-layer stack improve the flexibility and expansibility of the system.