Abstract
Modern world advances in sensors miniaturization and wireless networking which enables exploiting wireless sensor networking to monitor and control the environment. Human health monitoring is promising applications of sensor networks in a healthcare environment. Sensor system was worn by the human that creates wireless body area network to monitor and provide synchronized response to the patients for medical contextual information received by sensors. Though, challenging tasks are encountered by researchers to address habitually conflicting necessities for size, time to operate, correctness of data, reliability and time to store that data and provide responses accordingly.
This paper encompasses the structural design of hardware as well as software in a wireless sensor network system for monitoring health issues. The paper outlines few healthcare services, innovations latest trends those monitor patients in the health care systems and propose some of the other future trends where they might be helpful for future research to be used in handheld.