Abstract: Energy consumption of data transmission is a significant part of energy consumption in mobile networks.Ener-gy efficient transmission is an important topic to optimize energy consumption in mobile networks.The average energy consumption minimization problem based on data arrival rate was studied,when data has delay demand.The minimization problem was constructed using time-varying characteristics of wireless channel quality and it was turned into an optimal stopping problem.The existence of optimal stopping rule was proved.Finally,the optimal myopic stopping rule was solved to obtain optimal transmission rate threshold at each detection time.Thus the energy consumption optimization strategy for data transmission based on data arrival rate was realized.Simulations compared this strategy with othersin the index of average energy consumption,average delivery ratio and average scheduling period.The results show that our strategy has less average energy consumption and higher average delivery ratio,gaining better optimization effect.

Key words: Mobile networks,Arrival rate,Data transmission,Energy consumption optimization,Optimal stopping,Optimal rate