【摘要】 蓝牙传感器组成的医疗体域网的应用越来越广泛,而网络中的节点功耗决定着其生命周期的长短。根据实验结果,提出了一种自适应功率控制算法。根据节点接收信号强度指示的信号特性,建立接收信号强度指示与数据包投递率的关系作为效率模型,设计一种算法,可以根据接收信号强度指示,动态地控制节点射频发射功率,从而在保证数据包投递率的前提下,有效降低其功耗。实验结果表明:该算法可以使蓝牙传感器的功耗最多降低25%。更多还原

【Abstract】 Application of Bluetooth sensor-based medical body area network is wider and wider,the whole network lifetime depends on power consumption of sensor nodes.An adaptive power control algorithm is proposed according to experimental result.According to characteristics of node received signal strength indication(RSSI),construct relationship between RSSI and packet delivery ratio(PDR),which is used as efficiency model.The proposed algorithm is able to adaptively control transmitting power based on RSSI and reduce power consumption,on the premise of PDR.The experimental results show that the algorithm can reduce at most 25 % power consumption of Bluetooth sensor.更多还原