论文标题
使用LEO卫星的5G新无线无线网络的吞吐量和容量评估
Throughput and Capacity Evaluation of 5G New Radio Non-Terrestrial Networks with LEO Satellites
论文作者
论文摘要
第三代伙伴关系项目（3GPP）创造的术语是一个非事物网络（NTN），它是指利用空降或太空传播有效载荷进行通信的网络。 NTN的使用有可能促进与服务不足的地区提供连通性。这激发了3GPP的工作，以发展第五代（5G）无线访问技术，即新广播（NR），以支持NTN。 NTN与低地球轨道（LEO）卫星承诺的宽带机会吸引了很多关注，但是使用5G NR的LEO NTN的性能尚未得到很好的研究。在本文中，我们通过分析和评估LEO NTN的吞吐量和容量性能来解决这一差距。评估结果表明，S频带中的LEO卫星的下行链路容量为30 MHz带宽服务手持式终端约为600 Mbps，而KA带中LEO卫星的下行链路容量为400 MHz带宽，供应非常小的光圈端子（VSAT）约为7gbps。对于与亚马逊提出的Kuiper项目相似的LEO NTN，我们发现，由于LEO NTN中的大细胞大小，面积容量密度是中等的：1-10 kbps/km $^2 $ s s band band downink和14-120 kbps/km $^2 $在KA Band band band band downlink上，根据Latintel的限制。
A non-terrestrial network (NTN), a term coined by the 3rd Generation Partnership Project (3GPP), refers to a network utilizing airborne or spaceborne payload for communication. The use of NTN has the potential of facilitating providing connectivity to underserved areas. This has motivated the work in 3GPP on evolving the fifth generation (5G) wireless access technology, known as new radio (NR), to support NTN. The broadband opportunities promised by NTN with low Earth orbit (LEO) satellites have attracted much attention, but the performance of LEO NTN using 5G NR has not been well studied. In this paper, we address this gap by analyzing and evaluating the throughput and capacity performance of LEO NTN. The evaluation results show that the downlink capacity of a LEO satellite in S band with 30 MHz bandwidth serving handheld terminal is about 600 Mbps and the downlink capacity of a LEO satellite in Ka band with 400 MHz bandwidth serving very small aperture terminal (VSAT) is about 7 Gbps. For a LEO NTN similar to the Kuiper project proposed by Amazon, we find that, due to the large cell sizes in the LEO NTN, the area capacity density is moderate: 1-10 kbps/km$^2$ in the S band downlink and 14-120 kbps/km$^2$ in the Ka band downlink depending on latitude.
