IEEE 802.15.6 standard uses different frequency bands for data transmission including: The Narrowband (NB) which includes the 400, 800, 900 MHz and the 2.3 and 2.4 GHz bands; the Ultra Wideband (UWB),which uses the 3.111.2 GHz; and the Human Body Communication (HBC) which uses the frequencies within the range of 1050 MHz.