Rakuten Mobile's 5G service area and reason for the expansion plan, why not reversal?Reasons why I was disappointed with Rakuten Mobile 5G (Junya Ishino)

If you look at the breakdown of Tokyo, you can see that 13 of them are concentrated in specific areas in Setagaya Ward.Those who do not know the land in the Tokyo area may not come to a pin, but these spots will be so -called residential areas.The remaining one is in Itabashi Ward, which is also a residential area.I guess many people are surprised, not high traffic areas that require 5G.

In addition, some of the residential areas in Tokyo have said that the area is maintained by millimeter waves for some reason, and the question of "Why here?"According to Rakuten Mobile President Yoshihisa Yamada, "To be honest, other companies are not all over the country at first.It is true that the 5G area is very narrow.

However, at the time of submitting a 5G opening plan to the Ministry of Internal Affairs and Communications, even SoftBank, which had the lowest basis as of 2024, was a crowded area such as Chiyoda Ward and Chuo Ward in Tokyo at the start of the service in March.It was covered and the number of spots was prepared.Speaking of fifty steps and one hundred steps, Rakuten Mobile originally plans to launch a service in June.The service -in should have been delayed due to the lockdown of overseas labs due to the expansion of the new colon virus infection, but wasn't the number of base stations in the meantime?

According to Mr. Yamada, as of March 2021, the service will be launched in all prefectures, but with this standard, DOCOMO has achieved it in June.You have been delayed for more than half a year for three major carriers.Moreover, KDDI and SoftBank will convert 4G frequencies to 5G from this winter to next year.Following the appearance of compatible devices such as the iPhone, the company has expanded the area at a stretch to hold the 5G Festival (Softbank Ken Ken Miyauchi).

To be honest, I heard this area and the expansion plan, and I was a little disappointed.One industry officials have been cut off the expected value that is too expensive, saying, "What did you expect so much ...?"I wondered if there was some secret.Even if you think more simply, Rakuten Mobile's 4G frequency is only 1.7GHz band 20MHz width, much narrower than other companies.

Therefore, the peak rate is 400Mbps for a device that supports 256QAM and 4x4 MIMO.If it does not support 256QAM, it will be reduced to 150Mbps.Rakuten Mobile is in a hurry to expand the area, but has a dilemma that runs out of bandwidth as the number of users increases.Even if you want to increase the capacity by 4G like other companies and increase the capacity, it is difficult.In order to expand the area and capacity at the same time, it is more reasonable to focus on 5G than the 4G that has already become a past standard.

It makes sense to expand the 5G area when considering competition with competitors.Regarding 4G, while there is a delay for nearly 10 years at the moment, 5G has a starting point in 2020, common to four companies.The assigned bandwidth is less than docomo and KDDI, but there is no overwhelming difference like 4G.For this reason, for example, while using 4G diversion from the beginning, I was hoping that it would overturn the common sense of 4G with 5G.

For example, if you put DSS (Dynamic Spectrum Sharing) in the 1.7GHz band and consolidate it in 5G in the future, I think it would have been a certain threat for three major companies.4G users will eat it, but it is still less than one million contracts, so it should be easier to migrate than other companies.However, when I open the lid, the area is as described above.Although the SUB-6 and the millimeter wave started at the same time, both were spot-like and the outlook for the future was unclear.

He is also cautious about diversion, saying, "Because 4G is only 1.7GHz band, it is necessary to carefully consider the impact on customers, and it is not decided at this stage" (Public Relations Department).Rakuten Mobile, which sold completely virtualization, often appealed that it had a "5G lady" network configuration.If so, from the time of launch, my true intention was that I wanted not only the price plan but also a more surprising area.