Deployment strategies of LTE of DOCOMO and challenges for future mobile

In the mobile NW, rapid growth of data traffic observed in not only China and Japan, but also in world widely. Increasing of smart-phones and attraction of video-contents are current origin of the data traffic growth. In near future, tethering and M2M communications are also going to make the traffic increase. Requirement to our mobile NW to be with larger capacity is very strong and urgent.