arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.07903cs.NIcs.LGstat.ML
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无线网络中基于目标的确定性功率控制策略

Learning Deterministic Policy with Target for Power Control in Wireless Networks

University of Science and Technology of China(中国科学技术大学);Columbia University(哥伦比亚大学);Yahoo Labs(雅虎实验室)

Yujiao Lu, Hancheng Lu, Liangliang Cao, Feng Wu, Daren Zhu

摘要:

小区间干扰协调(ICIC)是提高无线网络中的能量效率的有前途的方式,特别是在密集部署小型基站的情况下。然而,传统的基于优化的ICIC方案遭受严重的性能下降与复杂的干扰模式。为了解决这个问题,我们提出了一个深度强化学习与确定性的政策和目标(DRL-DPT)框架ICIC在无线网络中。DRL-DPT克服了强化学习和深度学习在无线网络中应用的主要障碍,即连续状态空间、连续动作空间和收敛性。首先,深度神经网络(DNN)参与作为演员,以获得确定性的功率控制动作在连续空间。然后,为了保证算法的收敛性,提出了一种在线训练的方法,该方法使用一个专门的奖励函数作为目标规则,并使用策略梯度下降算法来调整DNN的权值。实验结果表明,所提出的DRL-DPT框架一致优于现有的计划在能源效率和吞吐量在不同的无线干扰情况下。更具体地说,它提高了高达15%的能源效率和更快的收敛速度。

英文摘要:

Inter-Cell Interference Coordination (ICIC) is a promising way to improve energy efficiency in wireless networks, especially where small base stations are densely deployed. However, traditional optimization based ICIC schemes suffer from severe performance degradation with complex interference pattern. To address this issue, we propose a Deep Reinforcement Learning with Deterministic Policy and Target (DRL-DPT) framework for ICIC in wireless networks. DRL-DPT overcomes the main obstacles in applying reinforcement learning and deep learning in wireless networks, i.e. continuous state space, continuous action space and convergence. Firstly, a Deep Neural Network (DNN) is involved as the actor to obtain deterministic power control actions in continuous space. Then, to guarantee the convergence, an online training process is presented, which makes use of a dedicated reward function as the target rule and a policy gradient descent algorithm to adjust DNN weights. Experimental results show that the proposed DRL-DPT framework consistently outperforms existing schemes in terms of energy efficiency and throughput under different wireless interference scenarios. More specifically, it improves up to 15% of energy efficiency with faster convergence rate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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