Softbank Mobile, to demonstrate experiments on "cooperative multiple base station transmission method" leading to ultra high speed "4th generation mobile phone"

Although the international organization "ITU (International Telecommunication Union)" aiming at establishing standardization and regulation among countries is mobile communication, it is superior to existing general optical fiber lines such as B FLET'S (about 100 Mbps) Realize high-speed communicationWe have officially selected "WiMAX 2" and "LTE-Advanced" as the communication method of "4 th generation mobile phone (4 G)"Announced that SOFTBANK MOBILE will conduct demonstration experiments on "cooperative multiple base station transmission method" leading to 4G today.

Details are as below.
Acquisition of preliminary license for multiple base station coordinated transmission system and demonstration experiment | SOFTBANK MOBILE Corp.

According to the press release of SOFTBANK MOBILE, the company will prepare a preliminary license for the experimental testing station concerning the wireless communication system of "multi-base station cooperative transmission method" in which adjacent base stations cooperatively control and transmit with the mobile station on December 2 I heard he got it.

"Multiple base station coordinated transmission technology" improves the transmission speed at the boundary of the coverage area between base stations susceptible to interference by cooperating with neighboring base stations to transmit and receive data to and from mobile stations (communication terminals) Technology to realize "LTE-Advanced" which is the next generation standard of the 3.9-th generation mobile phone "LTE", in "3GPP" which examines / creates specifications of 3G mobile phone system It is said that studies are under way now.

This is the system configuration of cooperative transmission experiment of multiple base stations. Experiments on how much the transmission speed improves at the boundary between experimental test stations A and B corresponding to the base station and synchronization accuracy evaluation for simultaneous transmission of data between base stations are performed.


As part of "Research and Development of Cooperative Control Techniques for Multiple Base Stations in an Environment Containing Cells of Different Sizes" adopted in "R & D for Expansion of Radio Resource" Project of the Ministry of Internal Affairs and Communications, SOFTBANK MOBILE conducts it with the National University University University, University of Electro-Communications, which is a cooperative researcher, and as soon as receiving this license, it will start a field demonstration test in Tokyo.

Although it is "WiMAX 2" selected as 4G as "LTE-Advanced", UQ Communications aims to start service in 2012, and in October this yearIt was the world's first demo demonstrating up to 330 Mbps downlink, It seems that the era when it will be possible to use high-speed communication similar to optical fiber even at the destination is coming before it is not so far.