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arXiv 1908.08401cs.LGcs.ITmath.ITstat.ML
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一种用于动态多通道访问的深度演员-评论强化学习框架

A Deep Actor-Critic Reinforcement Learning Framework for Dynamic Multichannel Access

Syracuse University(雪城大学)

Chen Zhong, Ziyang Lu, M. Cenk Gursoy, Senem Velipasalar

摘要:

为了有效利用有限的频谱资源,我们在这项工作中提出了一个基于深度演员批评者强化学习的动态多通道访问框架。我们考虑一个单用户的情况下,多个用户试图同时访问通道的情况。我们采用该框架作为一个单一的代理在单用户的情况下,并将其扩展到一个分散的多代理框架中的多用户的情况下。在这两种情况下,我们都开发了演员-评论家深度强化学习的算法,并通过实验和数值结果评估了所提出的学习策略。在单用户模型中,为了评估所提出的信道访问策略的性能和框架对不确定性的容忍度,我们探索了不同的信道切换模式和不同的切换概率。在多用户的情况下,我们分析了每个用户接入信道的概率与有利的信道条件和碰撞的概率。我们还解决了一个随时间变化的环境,以确定所提出的框架的适应能力。此外,我们提供了所提出的演员-评论家深度强化学习框架,基于Deep-Q网络(DQN)的方法,随机访问和信道动态已知时的最佳策略之间的比较(在平均奖励和时间效率方面)。

英文摘要:

To make efficient use of limited spectral resources, we in this work propose a deep actor-critic reinforcement learning based framework for dynamic multichannel access. We consider both a single-user case and a scenario in which multiple users attempt to access channels simultaneously. We employ the proposed framework as a single agent in the single-user case, and extend it to a decentralized multi-agent framework in the multi-user scenario. In both cases, we develop algorithms for the actor-critic deep reinforcement learning and evaluate the proposed learning policies via experiments and numerical results. In the single-user model, in order to evaluate the performance of the proposed channel access policy and the framework's tolerance against uncertainty, we explore different channel switching patterns and different switching probabilities. In the case of multiple users, we analyze the probabilities of each user accessing channels with favorable channel conditions and the probability of collision. We also address a time-varying environment to identify the adaptive ability of the proposed framework. Additionally, we provide comparisons (in terms of both the average reward and time efficiency) between the proposed actor-critic deep reinforcement learning framework, Deep-Q network (DQN) based approach, random access, and the optimal policy when the channel dynamics are known.

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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