Wireless Body Area Sensor Networks (WBASN) is an forthcoming technology which utilizes wireless sensor nodes to implement real-time wearable health monitoring of patients. These sensor nodes can be worn externally or implanted inside the body to monitor multiple bio-parameters (such as blood oxygen saturation, blood pressure and heart activity) of multiple patients at a central location in the hospital. It is a radio frequency based wireless networking technology. Here patients' health status can be monitored anytime and anywhere without restricting his/her mobility. Thus patient can live his/her normal daily life activities. This paper presents architecture of a wireless health monitoring system. The system consists of multiple sensor nodes which observe various body vital parameters and heart activities. Primary motivation of Body Area Network is to provide steady, timely, comfortable and proper monitoring of physical and biomedical parameters of patient continuously.

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Wireless Body Area Networks Quality Of Service Wireless Sensor Network