Performance Evaluations of C-Band 5G NR FR1 (Sub-6 GHz) Uplink MIMO on Urban Train
Performance Evaluations of C-Band 5G NR FR1 (Sub-6 GHz) Uplink MIMO on Urban Train
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城市列车上 C 频段 5G NR FR1（低于 6 GHz）上行链路 MIMO 的性能评估
DOI：
10.1109/wcnc55385.2023.10118777
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
J. Katto
中科院分区：
文献类型：
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作者：
Kasidis Arunruangsirilert;Pasapong Wongprasert;J. Katto
由于社交媒体平台、UHD 4K/8 K视频和VR/AR内容的快速发展所驱动的对移动的网络上的巨大上行链路吞吐量的近期需求，上行链路MIMO（UL-MIMO）现在已经部署在商用5G网络上，其中消费者具有合理的支持用户设备（UE）可用性。通过使用多达2个Tx天线端口，支持UL-MIMO的UE有望在理想条件下实现高达两倍的上行链路吞吐量，同时在具有挑战性的条件下提供比具有1 Tx的UE更好的上行链路性能。在日本，运营商之一SoftBank早在2021年10月就推出了用于固定无线接入（FWA）应用的5G独立（SA）服务。移动的服务于2022年5月开始，其在C频带或频带n77（3.7 GHz）上为所支持的UE提供UL-MIMO。本文将在火车上比较UL-MIMO功能UE与传统UL-1 Tx UE的上行链路性能，这是日本人最流行的交通方式。结果表明，支持UL-MIMO的UE在移动列车上的吞吐量平均提高了19.8%，在更有利的信号条件下提高了33.5%。还观察到下行链路5G NR SS-RSRP和上行链路吞吐量之间的适度关系。
Due to the recent demand for huge Uplink through-put on Mobile networks driven by the rapid development of social media platforms, UHD 4K/8K video, and VR/AR contents, Uplink MIMO (UL-MIMO) has now been deployed on commercial 5G networks with reasonable availability of supported User Equipment (UE) for consumers. By utilizing up to 2 Tx antenna ports, UL-MIMO-capable UE promised to achieve up to two times the uplink throughput in ideal conditions, while providing improved uplink performance over UE with 1Tx in challenging conditions.In Japan, SoftBank, one of the carriers, introduced 5G Standalone (SA) services for the Fixed Wireless Access (FWA) application back in October 2021. Mobile services were commenced in May 2022, which provide UL-MIMO for supported UE on C-Band or Band n77 (3.7 GHz). In this paper, the uplink performance of UL-MIMO-capable UE will be compared against the conventional UL-1Tx UE on trains, which is the most popular method of transportation for the Japanese. The results show that UL-MIMO-capable UE delivers an average of 19.8% better throughput on moving trains with up to 33.5% in the more favorable signal conditions. A moderate relationship between downlink 5G NR SS-RSRP and uplink throughput also has been observed.
通过商用 5G NSA/SA 网络进行 MPEG-DASH 超高清视频低延迟直播的性能评估
DOI：
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发表时间：
2022
期刊：
影响因子：
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作者：
K. Arunruangsirilert;B. Wei;H. Song;and J. Katto
通讯作者：
and J. Katto