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首页华为与NTT DOCOMO完成首个大规模5G 4.5GHz频段试验
华为与NTT DOCOMO完成首个大规模5G 4.5GHz频段试验
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更新于2024-09-04
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5G Worldwide Developments的这篇论文揭示了华为与NTT DOCOMO合作进行的一项开创性的5G大规模实地试验。这项试验在4.5 GHz频段采用新的数理结构,并符合3GPP 5G新无线(NR)的当前协议。试验地点位于日本横滨的真实城市应用场景中,目标是展示5G技术的潜力。 在试验中,他们实现了显著的成绩:总用户吞吐量达到11.29 Gb/s,这展示了5G网络在高数据传输速度方面的突破。此外,单向用户平面延迟低至0.5毫秒,这反映了5G在减少时延方面的优秀性能,对于实时通信和低延迟应用至关重要,如自动驾驶、远程医疗等。 试验的核心在于利用了多用户(MU)多输入多输出(MIMO)技术,这是一种同时支持多个设备连接的技术,极大地提高了频谱效率。通过精密的预编码算法,华为和NTT DOCOMO优化了信号处理,以最大化性能并减少用户间干扰,从而实现了每个小区最大79.82 b/s/Hz的MU-MIMO传输能力。 这一试验的成功不仅标志着5G技术在全球范围内的进步,也为未来大规模部署奠定了坚实的基础。它展示了5G如何在实际环境中实现高速率和低延迟,这对于5G网络的商用部署和全球标准制定具有重要意义。值得注意的是,该试验还得到了地方官员的支持,进一步表明了5G技术在全球城市化进程中的重要角色。 这篇报告揭示了华为和NTT DOCOMO在5G技术开发上的领先地位,以及他们如何通过创新的系统设计和先进技术来推动全球5G网络的发展。这对于了解5G技术的最新进展,评估其商业潜力以及推动相关行业标准的制定具有不可忽视的价值。
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1556-6072/17©2017IEEE IEEE VEHICULAR TECHNOLOGY MAGAZINE | MARCH 2017
Javier Gozalvez
M
obile
radio
5G Trials and Proof of Concepts
H
uawei and NTT DOCOMO an-
nounced what they claim is the
world’s first fifth-generation (5G),
large-scale field trial in the 4.5-GHz
band using new numerology and
frame structure complying with the
Third Generation Partnership Project
(3GPP) 5G New Radio (NR) current
agreements. In the trial, 11.29Gb/s
total user throughput and less than
0.5 ms one-way user plane latency
were achieved in the macrocell cov-
erage of a real urban application
scenario in Yokohama, Japan. The mac-
rocell was made up of one base sta-
tion that worked in the 4.5-GHz band
with 200-MHz bandwidth, 64 trans-
ceivers, and 23 pieces of user equip-
ment (UE) of both static and mobile
types. The trial combined multiuser
(MU), multiple-input, multiple-output
(MIMO) technology for simultaneous
multiple access and a precoding al-
gorithm that optimizes signals for
maximized performance and also
limits interuser interference. It
achieved a MU-MIMO transmission
of a maximum 79.82 b/s/Hz/cell.
From May or later in 2017, NTT
DOCOMO will commence delivery
of trial environments for 5G mobile
communications in Japan, working
in conjunction with various partners
in industries such as automobiles,
railways, and broadcasting. The
initial 5G trial sites will be offered
mainly in two districts of Tokyo, the
Odaiba waterfront and Tokyo Skytree
Town. NTT DOCOMO plans to uti-
lize the 28-GHz frequency bandand
to expand later by utilizing the addi-
tional 4.5-GHz candidate band.
Vodafone and Huawei have com-
pleted a 5G millimeter-wave (mm
wave) field test in Newbury, United
Kingdom. The test covers single-user,
with a strong reflection path to reach
a 20-Gb/s UE peak rate and MU-MIMO
for long-range UE to reach a 10-Gb/s
peak rate. The companies state that
it is the world’s first 5G outdoor field
test at E-Band reaching a 20-Gb/s
peak rate for a single-user device
with high spectrum efficiency. E-Band
is mm wave and can be used as a
complementary spectrum band to the
lower band to deliver an ultrahigh
mobile broadband user experience.
The two companies also announced
that they successfully tested 5G mo-
bile connectivity using high- and low-
frequency bands. The companies
have demonstrated 1.5-km cell cover-
age in the lower C-Band and a 5-Gb/s
peak throughput for a single user in
the high band. According to the compa-
nies, it is the world’s first 5G large-scale
mobility field test of macro coverage in
dense urban city scenarios.
Ericsson, SK Telecom, and Deutsche
Telekom announced that they will
deploy what they claim is the world’s
first transcontinental 5G trial network.
The three companies will deploy a
trial network in South Korea and
Germany that uses key 5G technolo-
gies such as network functions vir-
tualization (NFV), software-defined
infrastructure, distributed cloud, and
5G Worldwide Developments
Digital Object Identifier 10.1109/MVT.2016.2641138
Date of publication: 22 February 2017
Note
This will be my last “Mobile Radio” column after more than 16 years of ser-
vice as the mobile radio senior editor of IEEE Vehicular Technology Society
News first and then IEEE Vehicular Technology Magazine. It has been a plea-
sure to serve the community in this role and contribute to the success of
this publication (now a first quartile Journal Citations Report publication). I
would like to thank all editors-in-chief (in particular James Irvine, who gave
me the chance to join the editorial team), associate editors, and IEEE staff
with whom I had the chance to work and receive their support. I hope that
you found useful the columns that tried to summarize the development of
the mobile industry for the last 16 years. It has been a pleasure for me to
produce them, and I wish you all success in your endeavours. Hasta pronto!
Authorized licensed use limited to: HUNAN UNIVERSITY. Downloaded on February 12,2020 at 14:34:27 UTC from IEEE Xplore. Restrictions apply.
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