ABSTRACT
Technology has advanced significantly in the previous decade, and hence, there is a pressing need to change from conventional health system to preventive medicine and health management to improve individual/patient quality of life while lowering healthcare costs. The presence of individual/patient is needed in the current system for successful evaluation, health management, and preventive medicine. Since some symptoms may not manifest themselves in diagnosis, continuous and periodic monitoring over a long time is required to gain a deeper understanding of individuals/patients. As a result, there is an emerging demand for monitoring healthcare system (wearable) that can be accessed at any time and from any location. Embedded systems, information and communication technologies (ICTs), micro-electro- mechanical technologies, and nanotechnology have advanced to the point where individual/patient can now benefit from wearable-based sensors to screen/monitor parameters of health in real time, thanks to breakthroughs in advanced wireless communication technology. Bluetooth, ANT++, ZigBee, near-field communications, and IEEE 802.11 are some of the recent advances in wireless communication systems that are enhanced and got adapted to portable devices such as healthcare equipment and smart gadgets. 272 In addition, major advancements in micro-electromechanical technologies, wireless communication system associated with wearable sensors, and future scope of the wearable sensors and sensor networks in the field of E-Health are discussed, allowing for the development of small, lightweight wearable sensors.
