arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2107.00340eess.SYcs.SY
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AoI在支持能量收集和频谱共享的6G网络中实现最小化

AoI Minimization in Energy Harvesting and Spectrum Sharing Enabled 6G Networks

Amir Hossein Zarif, Paeiz Azmi, Nader Mokari, Mohammad Reza Javan, Eduard Jorswieck

摘要:

频谱共享是解决频谱不足的一种方法。本文研究了一种新的基于人工智能的频谱共享和能量收集系统,在该系统中,信息的新鲜性(AoI)得到了保证。该系统包括具有对频谱的访问权限的主用户和次用户。次用户是意图机会性地使用主用户频谱的能量收集传感器。该问题被表述为部分可观测马尔可夫决策过程(POMDPs),并使用两种方法来解决:深度Q网络(DQN)和决斗双深度Q网络(D3QN),以实现最优策略。其目的是在每个时隙的基础上,在覆盖和重叠模式,以最小化的次用户的平均AoI的情况下,自适应地选择最佳的行动。最后通过仿真实验验证了该方案与叠加模式相比的有效性。根据结果,在建议的系统中的平均AoI小于现有的模型,包括只有重叠模式。平均用户访问从覆盖模式下的30%提高到DQN中的45%和D3QN中的48%。

英文摘要:

Spectrum sharing is a method to solve the problem of frequency spectrum deficiency. This paper studies a novel AI based spectrum sharing and energy harvesting system in which the freshness of information (AoI) is guaranteed. The system includes a primary user with access rights to the spectrum and a secondary user. The secondary user is an energy harvesting sensor that intends to use the primary user spectrum opportunistically. The problem is formulated as partially observable Markov decision processes (POMDPs) and solved using two methods: a deep Q-network (DQN) and dueling double deep Q-Network (D3QN) to achieve the optimal policy. The purpose is to choose the best action adaptively in every time slot based on its situation in both overlay and underlay modes to minimize the average AoI of the secondary user. Finally, simulation experiments are performed to evaluate the effectiveness of the proposed scheme compared to the overlay mode. According to the results, the average AoI in the proposed system is less than that of the existing models, including only overlay mode. The average user access improved from 30% in the overlay mode to 45% in the DQN and 48% in the D3QN.

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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