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的演进历程以及面向Rel. 20的创新技术。通过采用经3GPP校准数据验证的真实ns-3仿真，我们评估了多种卫星网络配置方案。研究结果表明，非地面网络在以下方面具有显著潜力：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。