Location-Dependent Augmented Reality Services in Wireless Edge-Enabled Metaverse Systems
Location-Dependent Augmented Reality Services in Wireless Edge-Enabled Metaverse Systems
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DOI：
10.1109/ojcoms.2023.3234254
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发表时间：
2023
影响因子：
7.9
通讯作者：
Hongliang Zhang;S. Mao;D. Niyato;Zhu Han
中科院分区：
文献类型：
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作者：
Hongliang Zhang;S. Mao;D. Niyato;Zhu Han
Metverse被设想为将虚拟世界与物理世界联系起来的下一代范式，利用增强现实(AR)和虚拟现实(VR)技术为人类在虚拟环境中的活动提供身临其境的体验。无线多址边缘计算(MEC)的最新发展加速了这一愿景的实现。在这篇文章中，我们考虑了MEC使能的Metverse系统中的位置相关AR服务。在这样的系统中，每个用户首先执行同时定位和通信以估计其位置并向MEC服务器请求AR内容。由于计算和通信资源有限，MEC服务器自适应地调整AR内容的分辨率。然而，在这样的系统中出现了两个挑战。首先，定位误差会降低用户的体验质量；其次，通信和计算的耦合使资源管理变得复杂。为了解决这些问题，我们首先考虑定位误差对QOE进行建模，然后提出一种最小QOE最大化方案，通过联合优化用户端的波形、基站的发射功率和传输视频的分辨率来实现用户间的公平性。仿真结果与基准方案相比，验证了该方案的有效性。
Metaverse is envisioned as the next-generation paradigm that links a virtual world to the physical world, providing immersive experience for human activities in the hypothetical environment with augmented reality (AR) and virtual reality (VR) technology. Recent development of wireless multiaccess edge computing (MEC) has accelerated the realization of this vision. In this paper, we consider location-dependent AR services in MEC-enabled Metaverse systems. In such a system, each user performs simultaneous localization and communication first to estimate its position and request AR contents from the MEC server. Due to limited computation and communication resources, the MEC server adaptively adjusts the resolution of AR contents. However, two challenges arise in such a system. First, the localization error will degrade the user’s quality-of-experience (QoE); and second, the coupling of communication and computation complicates the resource management. To address these issues, we first model the QoE taking the localization errors into consideration, and then propose a minimum QoE maximization scheme to achieve fairness among users by jointly optimizing the waveform at users, the transmit power at the base station (BS), and the resolution of transmitted videos. Simulation results verify the effectiveness of the proposed scheme in comparison with benchmark schemes.