With this, we will eliminate "out of the service area" or introduce ultra-compact mobile phone base stations KDDI can set up at home

Even in urban areas where the population is densely populated and the base stations should be well maintained, there are places such as underground malls and high rise apartments, and when the number of users covered by one base station is too large, Although it may become "out of service" or difficult to communicate, it became clear that KDDI will introduce a very compact base station that can be installed at home.

Details are as below.
Mobile phone introduces ultra-small base station at home KDDI Mobile - latest news: IT-PLUS

According to the Nihon Keizai Shimbun news report, KDDI is planning to install an ultra-compact base station called "femtocell" for families where radio waves are difficult to connect. The trial service will be started in a part of the Kanto region in the middle of March, and it will expand to the whole country after the summer.

"Femtocell" is a device that connects to broadband lines such as fiber optic lines of each house and skips radio waves for mobile phones, and by introducing, femtocells which are likely to cause instability of communication due to interference of radio waves of multiple base stations It is supposed to eliminate "out of the service area" such as high-rise floor of high-rise building and densely built urban area where radio waves are difficult to reach.

The femtocell introduced by KDDI is made by Hitachi, and it seems that it will become possible to make a stable call within a radius of about 10 meters.

By the way, NTT DoCoMo has been using femtocell from 18th November 2009 "My area"It is a form that precedes KDDI.

This is an image of "My Area"


Although "My Area" uses the user's communication line and it is necessary to pay a femtocell usage fee, it is a service that does not discount packet charges and voice calling fee, but it is a service that KDDI Unlike NTT DoCoMo, I would like you to introduce measures that have taken one more step.