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WBAN is a modern body monitoring network of wireless technology in which patients that seeks to anticipate and diagnosis of diseases and to check the body’s reaction to medications. The day-to-day behaviors of a individual influence the signal transmission of sensor nodes, such as walking, standing and running. Current wake-sleep-up scheduling facility of service conventional networks with static sensors may therefore be unreliable in the WBAN, since they don’t know channel variations in body sensors. Sensors can be woken up to give during transmission conditions of bad channels, contributing to communication errors and energy consumption. To fix that, MAC based polling protocol called improvised channel access scheme is proposed. The impact of different data transmission rates of body sensors during no pathloss variations and with pathloss variations and multiple access schemes such as TDMA and …