Wireless Sensor Network using many wireless
communication protocols, such as Bluetooth [1], ZigBee,
UWB (ultra wideband), and wifi[2]. Each protocol has its own
characteristics. UWB is designed for low-power, short-range
and high speed data rate. Operational range for UWB can
reach 10 meters based on the IEEE 802.15.3 standard[3]. Wifi
is based on the IEEE 802.11 specification. The data rate can
reach 11 Mbps with distances up to 100 meters, but it needs a
great power[4]. ZigBee is a technology with low data rate, low
cost, and use small power. ZigBee is IEEE 802.15.4 standard.
ZigBee data rates can reach 250kbps and the distance range is
10m - 70m.[5]