Japan, Jan. 29 -- SoftBank Corp. ("SoftBank") and Ericsson Japan K.K. ("Ericsson") today announced that they have deployed an AI-powered, externally controlled coverage optimization system for Massive MIMO at multiple large-scale event venues in Japan, including major arenas and dome-type facilities in the Tokyo metropolitan area, which automatically enhances coverage patterns in response to traffic changes. This follows a successful commercial network trial at the Expo 2025 Osaka, Kansai, Japan ("Expo 2025").At large-scale event venues and theme parks, user distribution varies significantly between normal periods and during events, requiring flexible base station control in response to these distributions and changes. In particular, for ev...