Progress and Challenges of Test
Technologies for 5G
Zhengbo Jiang, Wei Hong, Nianzu Zhang and Chao Yu
Southeast University, Nanjing, China
Shanghai Transcom Instrument Technologies Co. Ltd., Shanghai, China
The 5G test system must closely integrate pre-research results with practice at all stages,
providing researchers and developers with flexible, efficient and reliable test platforms and test
data to accelerate the commercialization of 5G products. In this article, we introduce the testing
requirements and challenges running through different processes in the 5G industry. Combined
with various test scenarios, the test industry’s current R&D status is summarized, technical
challenges faced by instrument researchers and developers are highlighted and the potential
development of 5G test is forecast.
The information and communi- cations industry is facing great change due to the rapid develop- ment of applications, leading to an
explosive growth in data traffic. Traditional
transmission technologies and architectures
for wireless communications are challenged
by a variety of smart devices and different
connectivity requirements.1-2 The fifth generation mobile communications system (5G)
imposes diverse scenarios and extreme performance requirements. Its main operational
scenarios include seamless wide area coverage, high capacity hotspots, low power massive connections and low latency with high-reliability.
The 5G technology roadmap contains
two parts: a new air interface and a 4G evolution air interface.
5 In the 5G air interface
technical framework, the key technology
areas include massive MIMO, ultra-dense
network (UDN), new multiple access and
full spectrum access. As one of the most
important enabling technologies for seamless wide area coverage, massive MIMO efficiently utilizes spatial dimension resources
to dramatically increase system spectral efficiency and enhance the user experience.
UDN significantly reduces cell interference
through inter-microcell collaboration and
expands network capacity in local hot spots.
Novel multiple access technologies increase
equipment connectivity and reduce signaling overhead, as well as user equipment
(UE) power consumption through grant-free
mechanisms. Full spectrum access, which
supports a hybrid network integrating low
and high frequency bands, can simultaneously meet the requirements of high data
rates and large capacity.
Since 2013, the U.S., European Union,
Japan, South Korea and other countries or
regions have launched 5G R&D programs.
Since 2014, the Chinese government has
supported domestic 5G technology research via the National 863 plan, as well
as major science and technology projects.
These national or regional initiatives strive
to establish favorable positions in future 5G
technology and business competitions.
establish standards, 3GPP launched 5G research projects in early 2016 and plans to
complete the first version of the 5G standard (3GPP Release 15) in 2018. The IMT-
2020 group, which consolidates the efforts
of industry-university research, was estab-
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