NTT DOCOMO has developed an indoor multi-band base station and antenna that are newly compatible with the 1.5 and 1.7 GHz frequency bands for LTE-Advanced in addition to the conventionally supported 2 GHz band. Maximum downlink is rated at 150 Mbps currently and up to 225 Mbps when DOCOMO launches its LTE-Advanced service. Installations of the new base station and antenna are beginning immediately in parts of Tokyo, Kanagawa, Aichi, Osaka, Kyoto and Hyogo prefectures.
DOCOMO said its new multi-band base station fits into limited spaces in indoor locations and the new multi-band antenna, which is about the same size as the current single-band antenna, can replace existing antennas using the same space.
https://www.nttdocomo.co.jp/english/info/media_center/pr/2013/1121_00.html
