Body area network (BAN), wireless body area network (WBAN) or body sensor network (BSN) are terms used to describe the application of wearable computing devices.[1][2][3] This will enable wireless communication between several miniaturized body sensor units (BSU) and a single body central unit (BCU) worn at the human body.[4][5] The development of WBAN technology started around 1995 by considering wireless personal area network (WPAN) technologies for communications on, near and around the human body. Later around 2001, this application of WPAN has been named as body area network (BAN) to represent the communications on, in and near the body only.[6][7] A WBAN system can use WPAN wireless technologies as gateways to reach longer ranges.
http://en.wikipedia.org/wiki/Body_area_network
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