The testing will involve the usefulness of running 5G speeds on high frequency bands above 6GHz. 5G involves data-transmission at a high-speed of 10Gbps, which is 1000 times the capacity of current 4G LTE. The test will determine how well this frequency will support 10Gbps, even if a large number of devices are trying to connect to the network at the same time, in a small area. Docomo will begin testing 5G this year, inside at its R&D Center in Yokosuka, Kanagawa Prefecture. Outdoor trials will begin next year.