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The Wireless Body Area Network (WBAN), which comprises of a set of tiny, invasive/non-invasive, light-weight, high-energy-efficient biosensors that monitor human health for early diagnosis and therapy, has lately received a lot of interest from researchers. As present and rising tendencies in communications included with the tendencies in microelectronics and embedded system technologies the existing tech- niques of IEEE 802.15.4 and IEEE 802.15.6 standards are explored in WBANs. As a consequence, discussed the challenges of MAC layer in WBAN. Secondly, different multiple access techniques along with TDMA, CSMA/CA, Slotted Aloha and Hybrid are explored in terms of design goals. In literature, a number of Medium Access Control (MAC) protocols for WBANs have been suggested for addressing the partic- ular challenges associated with reliability, delay, collision and energy within the new …