Japan, May 25 -- NTT DOCOMO, INC. ("DOCOMO") and NEC Corporation ("NEC"), in collaboration with NTT, Inc. ("NTT"), have developed a technology (the "Technology") that enables multiple vehicles traveling at high speed to simultaneously maintain stable communications using high-capacity millimeter-wave (mmWave) communications in the 40 GHz band, which is expected to be leveraged in the 6G era. The Technology combines distributed MIMO, in which multiple antennas are distributed and deployed from a base station, with a technique that pre-compensates the transmit frequency and transmit timing of signals.In a demonstration trial conducted in March 2026 at a full-scale tunnel test facility installed at Japan's National Institute for Land and Infra...