Energy Consumption Optimization Based on TransmissionDistance in Wireless Body Area Network

Wireless body area networks comprise of sensor nodes attached on or implantedinside the human body and promise large improvements in patients healthmonitoring.Energy conservation in wireless sensor network (WSN) has always been the mostcrucial issue and with the rapid development of wireless sensor networktechnology ,the characteristic of energy limit in wsn has become the utmost concernamong people nowadays.According to how to use the limited energy effiectively ,and energy protocols havebeen evaluated based on certain performance metrics.A system level energy consumption model with transmission distance andtransmission rate for on body wireless communication link is addressed and athreshold distance dth is addressed and changes with the distance, in twomodes(d>dth,d