June 2 news, when 4G development is normal or even a bit cliche, 5G is no longer strange, has long been on the right track step by step, the communication circle is not lively. 

At present, the key spectrum issues about 5G are gradually clear and definite, the route schedule is also gradually emerging, and even domestic operators have begun to promote the 5G route step by step. 

5G spectrum planning is becoming clear, there is still a lot of room to fight for. 

At present, the frequency bands being studied by the IMT-2020 (5G) propulsion group include 3.3mur3.4, 4.4mur4.5 and 4.8mur4.99, of which 3.3mur3.6 has been designated as the test band of 5G. 

Cao Shumin, chairman of the IMT-2020 (5G) promotion group, revealed that in the high frequency band, there are several different alternative frequency bands, including 28, 25, 30, and 40GHz bands. 

"We are conducting in-depth research to determine which frequency band can be used for 5G. 

The support of IMT can help us to determine the relevant frequency band and use the frequency band above 6GHz for 5G ". 

Wang Xiaoyun, vice chairman of the China IMT-2020 (5G) Promotion Group, said: "the spectrum below 6GHz can be used in some seamless, extensive coverage areas, or in large-scale connections." 

The C-band can be used as the core band below 6GHz. 

The research on high frequency above 6GHz is also very important, because bandwidth can be used to provide some high-capacity services. " 

Of course, if the whole world has a common frequency band, it will be better to roam each other. 

In the 5G R & D experiment in China, it is determined to use low frequency (5GHz spectrum) to test the frequency spectrum. 

"5G authentication should support independent new wireless access technologies, especially on the low-frequency side," Cao Shumin pointed out. "it is very important that the low-frequency band is our initial experimental band. 

Of course, the high frequency band above 6GHz is also a very important link in the development of 5G. 

Werner Mohr, chairman of 5GPPP, revealed that Europe's choice is also below 6GHz. 

Dr. Kohei Satoh, secretary general of 5GMF, said that some of his members were interested in enhanced mobile broadband and felt that there should be more bandwidth, "so the spectrum above 6GHz is very important for 5G systems." 

TTakehiro Nakamura, vice president of NTT DoCoMo and head of the 5G propulsion room, believes that the availability of the spectrum can be divided into three selected bands that are worth studying in different regions and countries. 

The first is 3.4-3.8GHz, "which is available in most regions, which can be a good potential backup band for global coordination." 

The second is 3.8-4.2GHz, which is available in Japan and not available elsewhere. China also has flexibility in this regard. 

Some of this frequency band may be used, and perhaps China and Japan will coordinate in this regard. 

China's market is very large, from the point of view of operators, this is a large coverage, Japan hopes to cooperate with China. 

The third is the 4.4-4.99GHz band, which can also be considered in Japan, Europe and the United States, where the band is above 5G. South Korea and the United States also hope to use this band, and it is also possible that Japan can have a corresponding band in 2020. 

"the unified band can be used, and the 28GHz spectrum can be used, which is an alternative band. 

NTT DoCoMo has applied to the Japanese government and stakeholders will be involved. " 

Determination of commercial route schedule. 

China launched an experiment on technology research and development in January, and the 5G network will be the first to land in Zhangjiakou, Beijing, to serve the 2022 Winter Olympic Games. 

With regard to the research and development test of 5G technology, according to Cao Shumin, "the relevant experiments were launched in January this year, with the goal of testing 5G technology and improving the mechanism and technology solutions of 5G technology to support the global unified 5G standard." 

It is understood that the experiment consists of two stages. The first stage is the technology research and development experiment, which will run from 2016 to the end of 2018. 

The second stage is the product research and development pilot stage, in which larger-scale trials will be carried out to prepare for the commercial launch of 5G in 2020. 

South Korea's commercial pace is slightly ahead of schedule, entering the second phase of 5G research testing services from 2014 to 2016, and developing VR, AR and systems. 

And plans to launch 5G testing service for the Pyeongchang Winter Olympic Games in 2018. 

Japan, on the other hand, appears to be more radical. Takehiro Nakamura, vice president of NTT DoCoMo and head of the 5G Propulsion Room, said: "Japan will achieve 5G technology in 2020, that is, the strengthening of 5G technology in the next 2020 years." 

As the saying goes, if 5G comes, will 5G + be far away? 

But the commercial premise is that 5G should have a unified standard to avoid the fragmentation of 5G standard. 

The 5G sounds of the three major domestic operators are different. 

At present, China Mobile is slightly faster in the attitude and pace of 5G among the three major domestic operators. 

While carrying out the massive construction of 4G scale, we have not slackened the progress of 5G. We are ready to deploy 5G in three stages. At present, we have reached the second stage and are expected to be commercially available in 2020. 

It is reported that at present, China Mobile has basically completed the testing of the first phase of key technologies, mainly based on the evolution of LTE, plus some new technology components. 

The second phase of system concept testing is now under way with mobile partners, which focuses on NR and works from 3.5G with a bandwidth of at least 100m. 

China Mobile is expected to enter its third phase from 2018, based on the R15 standard. 

After the completion of this standard and before the launch of the R16 version, China Mobile will complete the largest pre-commercial test. 

When the third phase is completed, 2020 will be able to launch commercial services. 

And not only in RAN wireless, but also in the core network, China Mobile also