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arXiv 2207.00532cs.NIeess.SP
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QoE-Centric多用户mmWave调度:一种波束对准和缓冲区预测方法

QoE-Centric Multi-User mmWave Scheduling: A Beam Alignment and Buffer Predictive Approach

Babak Badnava, Sravan Reddy Chintareddy, Morteza Hashemi

摘要:

在本文中,我们考虑在毫米波(mmWave)视频流媒体网络,其中包括一个流媒体服务器和多个用户,每个请求具有不同分辨率的视频流的多用户调度问题。主要目标是优化所有用户的长期平均体验质量(QoE)。我们通过考虑毫米波网络的物理层特性来解决这个问题,包括由于双波束而导致的波束对准开销。为了开发一个有效的调度策略,我们利用上下文多臂强盗(MAB)模型,提出了一个波束对准开销和缓冲区预测流媒体解决方案,称为B2 P-Stream。所提出的B2 P-Stream算法最佳地平衡了开销和用户的缓冲器水平之间的权衡,并且通过减少用于更高分辨率的用户的波束对准开销来提高QoE。我们还提供了一个理论保证,我们提出的方法,并证明它保证了一个次线性遗憾界。最后,我们通过广泛的模拟研究我们提出的框架。我们提供了一个详细的比较B2 P流对均匀随机和循环(RR)的政策,并表明它优于他们两个在提供更好的QoE和公平性。我们还分析了B2 P-Stream算法在不同网络配置下的可扩展性和鲁棒性。

英文摘要:

In this paper, we consider the multi-user scheduling problem in millimeter wave (mmWave) video streaming networks, which comprise a streaming server and several users, each requesting a video stream with a different resolution. The main objective is to optimize the long-term average quality of experience (QoE) for all users. We tackle this problem by considering the physical layer characteristics of the mmWave network, including the beam alignment overhead due to pencil-beams. To develop an efficient scheduling policy, we leverage the contextual multi-armed bandit (MAB) models to propose a beam alignment overhead and buffer predictive streaming solution, dubbed B2P-Stream. The proposed B2P-Stream algorithm optimally balances the trade-off between the overhead and users' buffer levels and improves the QoE by reducing the beam alignment overhead for users of higher resolutions. We also provide a theoretical guarantee for our proposed method and prove that it guarantees a sub-linear regret bound. Finally, we examine our proposed framework through extensive simulations. We provide a detailed comparison of the B2P-Stream against uniformly random and Round-robin (RR) policies and show that it outperforms both of them in providing a better QoE and fairness. We also analyze the scalability and robustness of the B2P-Stream algorithm with different network configurations.

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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