基于Markov决策过程的无线网络传输功率控制策略  

Wireless Network Transmission Power Control Based on Markov Processes

作　　者：郑红燕[1] 冯延蓬[1] 仵博[1,2] 

机构地区：[1]深圳职业技术学院,广东深圳518054 [2]中南大学,长沙410083

出　　处：《计算机测量与控制》2013年第3期703-705,共3页Computer Measurement &Control

基　　金：国家自然科学基金(61074058);广东省自然科学基金(S2011040004769)

摘　　要：针对同频AP在重复覆盖区域存在干扰问题,分析STA移动性和链路状态可观察的特点,引入概率论思想,提出一种基于Markov决策理论的单链路功率控制算法,通过构建单传输链路的状态集、动作集、状态转移函数模型及报酬函数模型,实现AP功率调整策略的动态生成和在线调整;利用OPNET仿真平台,搭建IEEE802.11b无线网络实验环境,实验结果表明该算法有效降低了AP能量消耗,提高了网络吞吐率。Co--channel AP interferes with each other in repeat coverage area According to the mobility of STA and the state transition of AP--STA link, this paper proposes a single--link transmission power control algorithm based on the Markov Decision Processes. The sin- gle AP--STA link MDP model is constructed, which includes state, action, state transition function and reword function. The algorithm im- plements the dynamic creation and on--line tuning of the power adjustment policy. Under the experiment environment in IEEE802.11b, the result demonstrates the algorithm can reduce the AP power consumption efficiently and improve the network throughput.

关 键 词：无线局域网 无线接入点 马尔可夫决策过程 传输功率控制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]