无线接入网QoS保证的动态载频开启节能控制  

Dynamic frequency carriers on/off for energy-saving control with QoS guarantee in wireless access networks

作　　者：江琦[1] 唐昊[1] 奚宏生[2] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009 [2]中国科学技术大学自动化系,安徽合肥230027

出　　处：《中国科学技术大学学报》2012年第5期378-382,共5页JUSTC

基　　金：国家自然科学基金(61074033);教育部博士学科点专项基金(20093402110019);安徽省自然科学基金(11040606M142)资助

摘　　要：针对复杂应用环境中无线接入网负载高波动的特点,提出一种多路载频动态开启的系统级功耗控制策略,在满足多类业务QoS的同时,降低系统基站的能耗.构建基于连续时间Markov控制过程的系统分析模型,将动态载频开启节能控制转化为一个带约束的优化问题.结合性能势估计与随机逼近,提出一种基于策略迭代的在线自适应策略优化算法.仿真实验结果验证了方法的有效性.A system-level dynamic power management（DPM） strategy is presented to conserve energy of base stations in wireless access networks.It dynamically changes the operation state of multiple frequency carriers with the fluctuation of workloads to guarantee the QoS with minimum power consumption.First,an event-driven continuous-time Markov control processes model is introduced to formulate the DPM problem as a constrained optimization problem.Then,a policy iteration based reinforcement learning algorithm that combines potentials estimation and stochastic approximation is proposed for optimizing the DPM policy online.Simulation results demonstrate the effectiveness of the presented approach.

关 键 词：动态功耗控制 QOS保证 无线接入网 策略优化 动态载频开启 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]