According to a literature review paper [5], there
are rich research interests on the wireless sensory systems
in the form of wearable mobile devices for monitoring of
human physiological data or vital signs as well as behavioral
data. Hence the key target of this paper is the realization
of a WBAN, a kind of wireless sensor networks (WSNs),
where tiny sensor nodes are deployed on the surface or
implanted inside human body to monitor vital signals for
medical health diagnosis. Star-topology network is a popular
option for WBAN where the central node gathers and records
the sensing information as shown in Figure.1. An individual
body area network can also engage in a global medical
healthcare system, in which data gathered from sensor nodes
is sent through gateway to hospitals or clinics and assists
doctors to monitor and diagnose patient’s health condition.