MAC Protocol for UWB Wireless Body Area Network
Wireless Body Area Network (WBAN) is a networking concept that has evolved with the idea of monitoring vital physiological signals from low-power and miniaturized in-body or on-body sensors. Since WBAN sensor nodes are battery powered, they should be low power devices. The sensor tier communication of a WBAN involves the co-existence of WBAN hardware and Medium Access Control (MAC) protocol that enable the efficient communication of sensor data. The main focus of this paper is to investigate key aspects of MAC protocol used in WBAN systems focusing on Ultra Wideband (UWB) as the wireless technology, payingi attention to its ability to cater to the need of high data rate while operating at a low power. MAC protocol mentioned in this paper have considered manipulation of the physical layer properties of the UWB systems such as number of pulses per data bit (PPB), which can be incorporated with the MAC algorithm in order to make the system more dynamic in terms of Bit Error Rate (BER), data rate, and Quality-of-Service (QoS).
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