Ad Hoc网络中的动态反馈功率控制方法

Dynamic Feedback Power Control Method in Ad Hoc Network

受移动节点能量的限制,传统Ad Hoc网络使用最大的固定功率传送数据,从而严重影响节点及网络的生存时间。针对该问题,通过观测接收节点信干比的线性变化情况,计算发送节点所需的发送功率,发送节点以此为依据动态地调整传输功率。仿真结果表明,该方法能减少节点的能量损失,延长网络生存时间。

TraditionalAd Hoc networks transmit data with fixed maximum power,this working mode seriously affects the node and the network’s lifetime which is limited by the energy stored in mobile node.To address the issue,this paper proposes to observe the linear change of Signal to Interference Ratio（SIR） of receiving node to calculate the required transmitting power of sending node,so as to dynamically adjust the transmitting power.Simulation results show that this method can effectively reduce the energy loss of nodes and increase the network lifetime.