Nowadays, the emergence of 5G mobile network will bring great benefits to users, but it also brings great challenges to the technology industry, and even becomes the most profound secret in the field of technology.
Will Strauss, president of market research firm Forward Concepts, told the media last week that "in a way, 5G is like a blind person."
As the Global Mobile Communications Conference (MWC) is about to kick off this week, some media have also raised some of the top 10 issues related to 5G to some industry analysts and observers. Among these observers, the media is mainly associated with David Hutton, Technical Director of the GSM Association, and James Kimire, Director of Radio Frequency Communications and Software Defined Radio Communications (SDR), National Instruments Ltd. (NI). James Kimery) exchanged relevant matters.
Horton said that the GSM Association is an association of mobile operators and related companies committed to supporting communication standards. The mission of the GSMA is to guide the industry to focus on "use" and to develop new standards that benefit both the average user and the enterprise. Horton explained that "the development of 5G should not be driven only by technological advancement."
National Instruments is a software company that automates test equipment and real-world instruments. In the field of cellular wireless communication technology, National Instruments is a relatively new company. The company has little to do with the development of 4G or previous generation standards. However, according to Kimi, the situation has changed completely since 2010.
The development of 5G technology and the complexity associated with its prototypes make National Instruments' software-defined radio platform an indispensable tool for academic researchers and telecom equipment manufacturers involved in 5G technology innovation.
National Instruments is now placing itself in a unique position in the 5G space and has become an observer of several trials and multiple standards development meetings. The company is also able to take the lead in observing the current progress of 5G from a neutral position.
The following are the top 10 issues related to 5G technology.
Top 10 issues related to 5G technology
1. What can the emerging 5G standard provide?
In Kimi's view, this potential standard can be divided into three parts – broadband data for smart devices, ultra-reliable/ultra-fast/low-latency communication for automation, and machine types for a large number of networked devices. Communication.
Jim McGregor, founder and principal analyst of market research organization, also said, "Some important key terms for 5G can enhance carrier aggregation and further promote carrier and Wi-Fi, unlicensed spectrum and objects. Integration of networking solutions."
2. Can 5G be compatible with 4G?
Kimily said, "It will not be compatible. The technology currently discussed has been separated from 1G, 2G and 3G." However, Horton gave a very different answer. Horton said, "Because 5G is not a technology, it is more like a standard 'ecosystem', so we think 5G will retain some backward compatibility with 4G."
Kimi's theory is based primarily on the 3GPP (Third Generation Partnership Project) agreement reached at the 5G conference in Phoenix, Arizona, last fall. At the same time, the group also agreed to ensure that: radio frequencies less than or greater than 6 GHz; backward compatible radio access technology (RAT) - LTE evolution technology; non-backward compatible RAT - 5G new RAT technology.
In this regard, Strauss concluded, "For me, one obvious thing is that with more higher frequency joins, multi-frequency (carrier aggregation) integration, and antenna counts with more from the base station Variable Control System (MIMO) and directional broadcast frequency growth, 5G will be based on LTE, and LTE as a basic control theory."
3. The industry has seen a large number of announcements of 5G trials. However, people have not seen the 5G standard, so what will happen to such a test?
It turns out that many of the tests are “pre-commercial tests†that focus on technical feasibility and reliability. The industry is paying more and more attention to the millimeter-wave spectrum below 6 GHz used by 5G. Kimily said, "This is a huge leap for anyone in the cellular radio industry. So far, the mobile industry uses only spectrum below 6 GHz."
However, possible millimeter-wave cellular systems are also facing their own challenges, such as what are the corresponding provisions for solving channel impairments, and what are the requirements for solving the problem of high-band propagation characteristics.
According to Kimi, many operators and network equipment manufacturers are testing the performance of their own proposed systems, and are still collecting results.
Top 10 issues related to 5G technology
4. At present, all the eyes of the industry are closely watching the test results of millimeter waves using different frequency bands above 6 GHz. Which carrier or equipment team is testing which kind of test system based on which frequency?
According to Kimi, it is unfortunate that most operators and equipment manufacturers strictly keep the content and results of their experiments confidential. Horton also agreed with Kimi's point of view and said, "It is true that they are too selfish."
However, Kimi Rui also said that one company is exceptional, that is NTT Docomo. Last November, NTT Docomo showed some details about the 5G trial.
In October last year, NTT Docomo and Nokia Networks conducted a 5G test using a very high frequency 70 GHz millimeter wavelength signal. NTT Docomo announced in its report that it has achieved "ultra-high-speed data transfer" at speeds in excess of 2 Gbps.
NTT Docomo's other 5G trials also include, in November last year, the company partnered with South Korea's Samsung to use 28GHz high-frequency signals combined with beamforming communication technology with a large number of antenna elements and beam tracking.
5. When will the tester share the test results?
Kimi Rui said, "The 5G Technical Working Committee plans to hold a meeting in Gothenburg, Sweden from March 7th to 10th. We expect operators and equipment manufacturers to share their data - their prototype test results."
6, 5G standardized timetable
The 5G research work is scheduled to be completed by 2017 (probably completed in March 2017). The current industry goal is to develop the first phase of the 5G Rev. 1.0 standard by September 2018. The second phase of the standard is expected to be completed by December 2019.
7. Is there a positive compatibility between the 5G of the first phase and the second phase?
Kimily said that the research team has agreed that the industry will maintain positive compatibility between the first phase of 5G in 2018 and the future of innovative 5G.
Top 10 issues related to 5G technology
8. In many ways, 5G has a very important meaning for many people. So, will 5G show a diversified development direction?
Horton admits that the GSM Association has identified 70 different uses for the emerging 5G standard, including everything from smart meters and tactile Internet to virtual reality.
The technical requirements for improved mobile broadband communications may not be the same as those required for critical, non-delayed communications or large-scale IoT devices. This is why the priority effect is increasingly critical, so that the focus can be on the R&D aspects of the first phase of 5G work.
9. What is the most important focus of the first phase of 5G work?
Kimi Rui said, "The most urgent concern for operators is still the rapid growth of mobile data. The increase in data volume may drive the adjustment of the schedule."
Although a large number of other technologies need to be considered, such as large-scale MIMO, beamforming, new wave forms, and new modulation schemes. Kimi Rui believes that the millimeter wave will be the frontier and core topic in the discussion of the first phase of the 5G standard conference.
Horton has a slightly different perspective. He believes that millimeter waves are still "theory" to a certain extent. Horton said that although some usages will benefit from similar higher frequencies, we still need to see different technologies appear together, so that 5G can meet the wide range of needs of different industries.
10. What are the key factors for the success of the first phase of 5G standardization?
Kimily stressed that while focusing on millimeter-wave technology, the working group also needs to focus on selecting a frequency. Whether it's 28GHz, 39GHz or 70GHz, just pick one.
Kimi Rui also said, "We can focus on one frequency first, so it will be easier to expand to other frequencies in the future."
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