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In current days Body Sensor Network (BSN) technology has gained significant interest from researchers both in academic circles and industry. Through the development of innovative wearable/implantable biosensors, the applications for BSNs plays important role in today's health care, fitness, life-style monitoring, military application, sport and security. A body sensor network is a network of small sensor devices known as biosensors that can sense health parameters of an individual, which allows 24/7 monitoring and provide biofeedback services. Context awareness in body sensor network plays significant role to make body sensor network more intelligent and provide relevant and significant information to user to achieve long term pervasive health care monitoring. Capturing raw sensory data from body sensors, processing data and sending it to computer networks is a rising issue. In this survey we have identified …