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arXiv 1902.05181cs.ITmath.IT
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无线Virtual Reality (VR)中数据相关性感知的资源管理:一种回声状态迁移学习方法

Data Correlation-Aware Resource Management in Wireless Virtual Reality (VR): An Echo State Transfer Learning Approach

Mingzhe Chen, Walid Saad, Changchuan Yin, Mérouane Debbah

摘要:

在本文中,无线虚拟现实(VR)资源管理的问题进行了研究的无线VR网络中,VR内容发送的云蜂窝小型基站(SBS)。SBS将通过上行链路从VR用户收集跟踪数据,以便生成VR内容并使用下行链路蜂窝链路将其传输给最终用户。对于这种模型,用户请求或传输的数据可以表现出相关性,因为VR用户可以在不同的位置和方向上参与相同的沉浸式虚拟环境。因此,所提出的资源管理框架可以考虑这种空间数据相关性,以更好地管理上行链路和下行链路业务。这种潜在的空间数据相关性可以被考虑到资源分配问题中,以减少上行链路和下行链路中的业务负载。在下行链路中,云可以根据用户的数据相关性向用户发送360内容或从原始360内容中提取的特定可见内容,以减少回程业务负载。对于上行链路,每个SBS可以与具有相似跟踪信息的用户相关联,以减少跟踪数据的大小。该数据相关性感知资源管理问题被公式化为优化问题,其目标是最大化用户的成功传输概率,该概率被定义为每个用户的内容传输延迟满足瞬时VR延迟目标的概率。针对这一问题,提出了一种基于回声状态网络的迁移学习方法。通过巧妙地转移SBS的效用信息,所提出的基于转移的ESN算法可以快速应对无线网络环境的变化。

英文摘要:

In this paper, the problem of wireless virtual reality (VR) resource management is investigated for a wireless VR network in which VR contents are sent by a cloud to cellular small base stations (SBSs). The SBSs will collect tracking data from the VR users, over the uplink, in order to generate the VR content and transmit it to the end-users using downlink cellular links. For this model, the data requested or transmitted by the users can exhibit correlation, since the VR users may engage in the same immersive virtual environment with different locations and orientations. As such, the proposed resource management framework can factor in such spatial data correlation, to better manage uplink and downlink traffic. This potential spatial data correlation can be factored into the resource allocation problem to reduce the traffic load in both uplink and downlink. In the downlink, the cloud can transmit 360 contents or specific visible contents that are extracted from the original 360 contents to the users according to the users' data correlation to reduce the backhaul traffic load. For uplink, each SBS can associate with the users that have similar tracking information so as to reduce the tracking data size. This data correlation-aware resource management problem is formulated as an optimization problem whose goal is to maximize the users' successful transmission probability, defined as the probability that the content transmission delay of each user satisfies an instantaneous VR delay target. To solve this problem, an echo state networks (ESNs) based transfer learning is introduced. By smartly transferring information on the SBS's utility, the proposed transfer-based ESN algorithm can quickly cope with changes in the wireless networking environment.

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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