This paper overviews the 3GPP 5G NR-NTN standard, detailing the evolution from Rel. 18 to 19 and innovations for Rel. 20. Using realistic ns-3 simulations validated against 3GPP calibration data, we evaluate various satellite network configurations. The results highlight the potential of NTNs to extend wireless connectivity to remote areas, serve requests during emergency, and alleviate terrestrial network congestion.

翻译：本文综述了3GPP 5G NR-NTN标准，详细阐述了从Rel. 18到Rel. 19的技术演进以及面向Rel. 20的创新方案。通过采用经3GPP校准数据验证的真实ns-3仿真平台，我们对多种卫星网络配置进行了系统性评估。研究结果凸显了非地面网络在以下方面的潜力：将无线连接扩展至偏远地区、满足应急通信需求，以及缓解地面网络拥塞压力。