Wireless Body Area Network(WBAN) is an emerging trend in ubiquitous society and very prolific for Human being, which consists of low power wireless biosensors, seamlessly placed on or implanted in human body in order to provide an adaptable and smart healthcare system. Positioning of a WBAN user in his/her critical condition is an important issue in WBAN. For this purpose we have canvassed different positioning system, checked advantage and disfavor of those system keeping eyes on the

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... t of WBAN.A patient equipped with WBAN sensors can stuck into any critical condition anywhere so it is important to monitor them continuously. There are different technologies for localization, but their stickiness with certain application does not make them unanimous. In WBAN we need a technology which can serve two way communication as well as positioning of the user. Since GSM technology is dispersed through worldwide with huge infrastructure so this work tries to elaborate that how GSM is better option than others.