What's 5G? Let us explain about the overview of local 5G

For 5G millimeter waves, it is suitable to install a base station (small cell) on the ceiling and use it indoors. With 5G, a private network service called local 5G is also possible, and a license has already been issued. With local 5G, users can set up base stations and deploy 5G networks only on their own premises. Since the equipment and bandwidth can be monopolized, high quality and large capacity communication is possible. If local 5G becomes widespread, we can expect to expand the area where millimeter waves are deployed. On the other hand, at present, the equipment cost is huge and it seems that it will be limited to some large companies or limited users such as government agencies and local governments. I calculated the investment amount for deploying local 5G with the current technology and parts.
Haneda Airport * 1: 2.14 billion yen to 6.56 billion yen (approx. 19.5 million to 59.6 million US dollars)
Narita Airport * 1: 2.35 billion yen to 7.07 billion yen (approx. 21.4 million to 64.3 million US dollars)
Tokyo Station * 2: 580 million yen to 1.74 billion yen (approx. 5.3 million to 15.8 million US dollars)
Shinjuku Station * 2: 380 million yen to 1.15 billion yen (approx. 3.5 million to 10.5 million US dollars)
Ueno Station * 2: 400 million yen to 1.22 billion yen (approx. 3.6 million to 11.1 million US dollars)
Ikebukuro Station * 2: 330 million yen to 980 million yen (approx. 3.0 million to 8.9 million US dollars)
Shibuya Station * 2: 180 million yen to 530 million yen (approx. 1.6 million to 4.8 million US dollars)
Shinagawa Station * 2: 160 million yen to 480 million yen (approx. 1.5 million to 4.4 million US dollars)
Shinbashi Station * 2: 150 million to 450 million yen (approx. 1.4 million to 4.1 million US dollars)
*1: For airports, it is calculated as covering from the departure / arrival lobby to the terminal and boarding bridge, and not for in-flight and tarmac
Also, commercial facilities (restaurants, souvenir shops, etc.) in the airport and parking lots attached to the airport are not covered.
*2: For stations, JR and private railway lines, subway stations from passages to platforms are covered, and the inside of vehicles is not covered.
Also, commercial facilities (restaurants, souvenir shops, etc.) inside the station are not covered.
*3: US$ = 110 yen

There is a wide range of investment amount forecasts because base station manufacturers are divided into domestic and overseas, and price reductions at the beginning and end of the introduction are taken into consideration. The range is large, but even if you look at the minimum amount, it does not fit in the amount to invest. It is clear that local 5G will not spread unless equipment costs are reduced and required investment is reduced. For the spread of local 5G, I think it is necessary to have a base station with a small output that allows parts to be shared with terminals (smartphones) and a cover area of about 5 meters square.