Recent technological advances in low-power integrated circuits, wireless short-range communication, and physiological sensing allow miniature, lightweight, ultra- low-power intelligent monitoring devices [1]. A number of these devices can be integrated into wireless body area network (WBAN) – a new enabling technology for health monitoring. WBAN is expected to become a basic infrastructure element for electronic health services. By integrating patient-attached sensors and mobile actor units, distributed information, and data processing systems, the range of medical workflow can be extended to include applications like wireless multi-parameter patient monitoring and therapy support. WBAN promises inexpensive and unsupervised medical monitoring during normal daily activities for prolonged periods. The basic concept of WBAN is that a set of mobile phones/ personal digital assistant (PDA) would enable transfer of vital parameters between the patient’s location and their doctors through wireless or Internet. However, WBAN consolidates the data stream of all sensors nodes attached to the body and transmits the data to PDAs [2].