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arXiv 2302.11539cs.NI
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基于位置的机器学习传播损耗模型:在 ns-3 中实现无线网络快速数字孪生

Position-Based Machine Learning Propagation Loss Model Enabling Fast Digital Twins of Wireless Networks in ns-3

Eduardo Nuno Almeida, Helder Fontes, Rui Campos, Manuel Ricardo

AI总结:

本文提出基于位置的机器学习传播损耗模型 P-MLPL,利用实验网络轨迹在 ns-3 中构建快速精确的无线网络数字孪生,将传播损耗预测中位误差降至 2.5 dB,显著优于现有模型。

摘要:

数字孪生作为一种混合方法正在兴起,它结合了模拟器的优势与实验测试平台的真实性。通过准确且可重复的设置来复现物理环境的动态条件,无线网络的数字孪生可用于评估下一代网络的性能。在本文中,我们提出了基于位置的机器学习传播损耗模型(P-MLPL),能够在 ns-3 中创建快速且更精确的无线网络数字孪生。基于在实验测试平台中收集的网络轨迹,P-MLPL 模型在考虑节点绝对位置和流量方向的情况下,估计发射器与接收器之间交换的数据包所遭受的传播损耗。P-MLPL 模型通过一个测试套件进行了验证。结果表明,P-MLPL 模型能够以 2.5 dB 的中位误差预测传播损耗,这相当于 ns-3 中现有模型误差的 0.5 倍。此外,与测试平台中测量的真实值相比,使用 P-MLPL 模型的 ns-3 仿真在估计吞吐量时的误差最高为 2.5 Mbit/s。

英文摘要:

Digital twins have been emerging as a hybrid approach that combines the benefits of simulators with the realism of experimental testbeds. The accurate and repeatable set-ups replicating the dynamic conditions of physical environments, enable digital twins of wireless networks to be used to evaluate the performance of next-generation networks. In this paper, we propose the Position-based Machine Learning Propagation Loss Model (P-MLPL), enabling the creation of fast and more precise digital twins of wireless networks in ns-3. Based on network traces collected in an experimental testbed, the P-MLPL model estimates the propagation loss suffered by packets exchanged between a transmitter and a receiver, considering the absolute node's positions and the traffic direction. The P-MLPL model is validated with a test suite. The results show that the P-MLPL model can predict the propagation loss with a median error of 2.5 dB, which corresponds to 0.5x the error of existing models in ns-3. Moreover, ns-3 simulations with the P-MLPL model estimated the throughput with an error up to 2.5 Mbit/s, when compared to the real values measured in the testbed.

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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