TDMA based directional MAC for WBAN

In this paper, we present a Medium Access Control Protocol (MAC) for a Wireless Body Area Network (WBAN). Designing of MAC for WBAN has key challenges like power efficiency and flexibility in duty cycle on energy constraint sensor node. To solve it we exploit Time Division Multiple Access (TDMA) and Multi beam Antenna approach simultaneously. Together it provides Spatial Division Multiple Access (SDMA), which has clear advantage over FDMA, CSMA, TDMA etc. In this work Human body is divided in four sector keeping Body Area Network coordinator (BAN C) as its center. All the physiological sensors transmits in omni directional mode with low power, while Body Area Network Coordinator transmit in directional mode.