Accelerating Ray Tracing-Based Wireless Channels Generation for Real-Time Network Digital Twins

IF 6.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Cláudio Modesto;Lucas Mozart;Pedro Batista;André Cavalcante;Aldebaro Klautau
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引用次数: 0

Abstract

Ray tracing (RT) simulation is a widely used approach to enable modeling wireless channels in applications such as network digital twins. However, the computational cost to execute ray tracing (RT) is proportional to factors such as the level of detail used in the adopted 3D scenario. This work proposes RT pre-processing algorithms that aim at simplifying the 3D scene without distorting the channel, by reducing the scenario area and/or simplifying object shapes in the scenario. It also proposes a post-processing method that augments a set of RT results to achieve an improved time resolution. These methods enable using RT in applications that use a detailed and photorealistic 3D scenario while generating consistent wireless channels over time. Our simulation results with different urban scenarios scales, in terms of area and object details, demonstrate that it is possible to reduce the simulation time by more than 50% without compromising the accuracy of the multipath RT parameters, such as angles of arrival and departure, delay, phase, and path gain.
加速基于光线跟踪的实时网络数字孪生无线信道生成
在网络数字孪生等应用中,射线追踪(RT)仿真是一种广泛使用的无线信道建模方法。然而,执行光线追踪(RT)的计算成本与所采用的3D场景中使用的细节水平等因素成正比。这项工作提出了RT预处理算法,旨在通过减少场景面积和/或简化场景中的物体形状,在不扭曲通道的情况下简化3D场景。提出了一种增强RT结果集的后处理方法,以提高时间分辨率。这些方法可以在使用详细和逼真的3D场景的应用程序中使用RT,同时随着时间的推移生成一致的无线信道。我们在不同城市场景尺度下的模拟结果表明,在不影响多路径RT参数(如到达和离开的角度、延迟、相位和路径增益)的准确性的情况下,将模拟时间减少50%以上是可能的。
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来源期刊
CiteScore
13.70
自引率
3.80%
发文量
94
审稿时长
10 weeks
期刊介绍: The IEEE Open Journal of the Communications Society (OJ-COMS) is an open access, all-electronic journal that publishes original high-quality manuscripts on advances in the state of the art of telecommunications systems and networks. The papers in IEEE OJ-COMS are included in Scopus. Submissions reporting new theoretical findings (including novel methods, concepts, and studies) and practical contributions (including experiments and development of prototypes) are welcome. Additionally, survey and tutorial articles are considered. The IEEE OJCOMS received its debut impact factor of 7.9 according to the Journal Citation Reports (JCR) 2023. The IEEE Open Journal of the Communications Society covers science, technology, applications and standards for information organization, collection and transfer using electronic, optical and wireless channels and networks. Some specific areas covered include: Systems and network architecture, control and management Protocols, software, and middleware Quality of service, reliability, and security Modulation, detection, coding, and signaling Switching and routing Mobile and portable communications Terminals and other end-user devices Networks for content distribution and distributed computing Communications-based distributed resources control.
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